{"id":1525,"date":"2023-04-25T14:36:47","date_gmt":"2023-04-25T14:36:47","guid":{"rendered":"https:\/\/waldunsteel.com\/?post_type=portfolio&#038;p=1525"},"modified":"2024-12-23T20:57:18","modified_gmt":"2024-12-23T20:57:18","slug":"aisi-4145-4145h-aco","status":"publish","type":"portfolio","link":"https:\/\/waldunsteel.com\/pt\/products\/aisi-4145-4145h-steel\/","title":{"rendered":"A\u00e7o AISI 4145 \/ 4145H"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-62am4l-f8ac34a3831bd2286d92e6ec2a3599b5\">\n.flex_column.av-62am4l-f8ac34a3831bd2286d92e6ec2a3599b5{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-62am4l-f8ac34a3831bd2286d92e6ec2a3599b5 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-knx9yc0j-bea78983db1f930270b787483d157bb8'  ><div class='avia_textblock' ><h1 style=\"text-align: center;\"><strong>A\u00e7o AISI 4145 \/ 4145H<\/strong><\/h1>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-1527 aligncenter\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/4145-steel.jpg\" alt=\"4145 a\u00e7o\" width=\"750\" height=\"400\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/4145-steel.jpg 750w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/4145-steel-300x160.jpg 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/4145-steel-16x9.jpg 16w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/04\/4145-steel-705x376.jpg 705w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><\/p>\n<p>WALDUN \u00e9 uma das melhores empresas no fornecimento de a\u00e7o AISI 4145 \/ 4145H. Se voc\u00ea est\u00e1 procurando um a\u00e7o AISI 4145 \/ 4145H, voc\u00ea est\u00e1 no lugar certo.<\/p>\n<p>AISI 4145 \u00e9 uma liga de a\u00e7o ao cromo e molibd\u00eanio amplamente utilizada nos setores de petr\u00f3leo e g\u00e1s.<\/p>\n<p>Semelhante ao AISI 4140, mas com um maior conte\u00fado de carbono. 4145 \u00e9 mais popular em di\u00e2metros maiores devido \u00e0 sua maior resist\u00eancia e temperabilidade. AISI 4145 \u00e9 comumente fornecido temperado e revenido com uma dureza entre 30 a 36HRc.<\/p>\n<p>AISI 4145H \u00e9 um a\u00e7o temperado de baixa liga ao cromo - molibd\u00eanio.<\/p>\n<p>O AISI 4145H tem temperabilidade aprimorada e \u00e9 mais comumente usado na condi\u00e7\u00e3o de alta resist\u00eancia com rendimento m\u00ednimo de 110 KSI.<\/p>\n<p>Aceitamos consultas sobre a\u00e7o AISI 4145\/4145H. Entre em contato com nosso escrit\u00f3rio de vendas para mais detalhes.<\/p>\n<hr \/>\n<h2><strong>O que \u00e9 a\u00e7o AISI 4145 \/ 4145H?<\/strong><\/h2>\n<p>AISI 4145 \u00e9 um a\u00e7o de liga de cromo-molibd\u00eanio, projetado especificamente para fornecer propriedades mec\u00e2nicas superiores em ambientes de alto estresse. A designa\u00e7\u00e3o \u201cH\u201d em AISI 4145H indica controles mais r\u00edgidos na composi\u00e7\u00e3o qu\u00edmica e maior temperabilidade, tornando-o adequado para aplica\u00e7\u00f5es cr\u00edticas onde propriedades mec\u00e2nicas consistentes s\u00e3o essenciais.<\/p>\n<hr \/>\n<h2><strong>Composi\u00e7\u00e3o qu\u00edmica<\/strong><\/h2>\n<p>O desempenho do a\u00e7o AISI 4145 \u00e9 amplamente determinado por sua composi\u00e7\u00e3o qu\u00edmica:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Elemento<\/strong><\/th>\n<th><strong>Conte\u00fado (%)<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Carbono (C)<\/td>\n<td>0,43\u20130,48<\/td>\n<\/tr>\n<tr>\n<td>Sil\u00edcio (Si)<\/td>\n<td>0,15\u20130,35<\/td>\n<\/tr>\n<tr>\n<td>Mangan\u00eas (Mn)<\/td>\n<td>0,75\u20131,00<\/td>\n<\/tr>\n<tr>\n<td>Cromo (Cr)<\/td>\n<td>0,80\u20131,10<\/td>\n<\/tr>\n<tr>\n<td>Molibd\u00eanio (Mo)<\/td>\n<td>0,15\u20130,25<\/td>\n<\/tr>\n<tr>\n<td>F\u00f3sforo (P)<\/td>\n<td>\u2264 0,035<\/td>\n<\/tr>\n<tr>\n<td>Enxofre (S)<\/td>\n<td>\u2264 0,040<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>No AISI 4145H, controles mais rigorosos sobre o teor de carbono, cromo e molibd\u00eanio aumentam a temperabilidade e garantem uniformidade entre os lotes de produ\u00e7\u00e3o.<\/p>\n<hr \/>\n<h2><strong>Propriedades mec\u00e2nicas<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145 apresenta excelente resist\u00eancia e tenacidade, que podem ser ainda mais aprimoradas por meio de tratamento t\u00e9rmico:<\/p>\n<table>\n<thead>\n<tr>\n<th><strong>Propriedade<\/strong><\/th>\n<th><strong>Recozido<\/strong><\/th>\n<th><strong>Temperado e revenido<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Resist\u00eancia \u00e0 trac\u00e7\u00e3o<\/td>\n<td>655\u2013850 MPa<\/td>\n<td>930\u20131.200 MPa<\/td>\n<\/tr>\n<tr>\n<td>For\u00e7a de rendimento<\/td>\n<td>415\u2013655 MPa<\/td>\n<td>730\u20131.030 MPa<\/td>\n<\/tr>\n<tr>\n<td>Alongamento na ruptura<\/td>\n<td>18\u201322%<\/td>\n<td>12\u201315%<\/td>\n<\/tr>\n<tr>\n<td>Dureza Brinell (HB)<\/td>\n<td>197\u2013235<\/td>\n<td>250\u2013330<\/td>\n<\/tr>\n<tr>\n<td>Resist\u00eancia ao Impacto (Charpy V)<\/td>\n<td>Alta Resist\u00eancia<\/td>\n<td>Excelente Resist\u00eancia<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Essas propriedades o tornam adequado para aplica\u00e7\u00f5es de alto estresse e propensas \u00e0 fadiga.<\/p>\n<hr \/>\n<h2><strong>Principais caracter\u00edsticas e vantagens<\/strong><\/h2>\n<ol>\n<li><strong>Alta resist\u00eancia e tenacidade:<\/strong>\n<ul>\n<li>Oferece excelente desempenho sob cargas pesadas e em ambientes din\u00e2micos.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Temperabilidade:<\/strong>\n<ul>\n<li>Dureza e resist\u00eancia uniformes podem ser alcan\u00e7adas em grandes se\u00e7\u00f5es transversais, particularmente em AISI 4145H.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Resist\u00eancia ao desgaste:<\/strong>\n<ul>\n<li>O cromo e o molibd\u00eanio melhoram a resist\u00eancia ao desgaste, essencial para ferramentas de perfura\u00e7\u00e3o de petr\u00f3leo e g\u00e1s.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Usinabilidade:<\/strong>\n<ul>\n<li>Apesar de sua dureza, o AISI 4145 permanece usin\u00e1vel, especialmente no estado recozido.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Resist\u00eancia \u00e0 fadiga:<\/strong>\n<ul>\n<li>Adequado para componentes expostos a tens\u00f5es c\u00edclicas.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h2><strong>Aplica\u00e7\u00f5es do A\u00e7o AISI 4145 \/ 4145H<\/strong><\/h2>\n<p>Esta liga \u00e9 amplamente utilizada em ind\u00fastrias que exigem resist\u00eancia e durabilidade superiores:<\/p>\n<ul>\n<li><strong>Ind\u00fastria de petr\u00f3leo e g\u00e1s:<\/strong>\n<ul>\n<li>Colares de perfura\u00e7\u00e3o, ferramentas de fundo de po\u00e7o, subs e estabilizadores.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Aeroespacial e Avia\u00e7\u00e3o:<\/strong>\n<ul>\n<li>Componentes do trem de pouso e outros elementos estruturais cr\u00edticos.<\/li>\n<\/ul>\n<\/li>\n<li><strong>M\u00e1quinas pesadas:<\/strong>\n<ul>\n<li>Eixos, fusos e engrenagens usados em equipamentos de minera\u00e7\u00e3o e constru\u00e7\u00e3o.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Automotivo:<\/strong>\n<ul>\n<li>Componentes sujeitos a alto torque e desgaste.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h2><strong>Processos de tratamento t\u00e9rmico<\/strong><\/h2>\n<p>O tratamento t\u00e9rmico \u00e9 crucial para adaptar as propriedades do AISI 4145 a aplica\u00e7\u00f5es espec\u00edficas.<\/p>\n<ol>\n<li><strong>Anelamento:<\/strong>\n<ul>\n<li>O aquecimento a 850\u2013900 \u00b0C, seguido de resfriamento lento, reduz a dureza e melhora a usinabilidade.<\/li>\n<\/ul>\n<\/li>\n<li><strong>T\u00eampera e revenimento:<\/strong>\n<ul>\n<li>A t\u00eampera em \u00f3leo ou \u00e1gua a 830\u2013880 \u00b0C, seguida de revenimento a 540\u2013680 \u00b0C, atinge um equil\u00edbrio ideal de resist\u00eancia, tenacidade e dureza.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Al\u00edvio do stress:<\/strong>\n<ul>\n<li>Realizado ap\u00f3s usinagem ou soldagem para minimizar tens\u00f5es residuais.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Endurecimento de superf\u00edcie (endurecimento por indu\u00e7\u00e3o ou chama):<\/strong>\n<ul>\n<li>Aumenta a resist\u00eancia ao desgaste da superf\u00edcie, mantendo a tenacidade do n\u00facleo.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h2><strong>T\u00e9cnicas de Processamento<\/strong><\/h2>\n<ol>\n<li><strong>Usinagem:<\/strong>\n<ul>\n<li>Ferramentas de carboneto e velocidades controladas s\u00e3o recomendadas para precis\u00e3o e longevidade da ferramenta.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Soldagem:<\/strong>\n<ul>\n<li>Tratamentos t\u00e9rmicos de pr\u00e9-aquecimento e p\u00f3s-soldagem s\u00e3o necess\u00e1rios para evitar rachaduras e garantir a integridade da solda.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Forjamento:<\/strong>\n<ul>\n<li>Adequado para opera\u00e7\u00f5es de forjamento a 900\u20131.200\u00b0C, seguido de resfriamento lento.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<hr \/>\n<h2><strong>Compara\u00e7\u00f5es com notas semelhantes<\/strong><\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>Grau de a\u00e7o<\/strong><\/th>\n<th><strong>A\u00e7o inoxid\u00e1vel AISI 4145<\/strong><\/th>\n<th><strong>AISI 4140<\/strong><\/th>\n<th><strong>AISI 4340<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Conte\u00fado de carbono<\/td>\n<td>Mais alto (0,43\u20130,48%)<\/td>\n<td>Moderado (0,38\u20130,43%)<\/td>\n<td>Moderado (0,38\u20130,43%)<\/td>\n<\/tr>\n<tr>\n<td>For\u00e7a<\/td>\n<td>Mais alto<\/td>\n<td>Moderado<\/td>\n<td>Alto<\/td>\n<\/tr>\n<tr>\n<td>Dureza<\/td>\n<td>Excelente<\/td>\n<td>Bom<\/td>\n<td>Excelente<\/td>\n<\/tr>\n<tr>\n<td>Formul\u00e1rios<\/td>\n<td>Servi\u00e7o pesado<\/td>\n<td>Engenharia geral<\/td>\n<td>Aeroespacial, petr\u00f3leo e g\u00e1s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>O AISI 4145 \u00e9 preferido para aplica\u00e7\u00f5es mais exigentes devido \u00e0 sua maior resist\u00eancia e tenacidade em compara\u00e7\u00e3o ao AISI 4140.<\/p>\n<hr \/>\n<h2><strong>Certifica\u00e7\u00f5es e Normas<\/strong><\/h2>\n<p>Para garantir qualidade e confiabilidade, garanta a conformidade com estes padr\u00f5es:<\/p>\n<ul>\n<li><strong>ASTM A29\/A29M:<\/strong> Especifica\u00e7\u00e3o para barras de a\u00e7o.<\/li>\n<li><strong>API 7-1:<\/strong> Especifica\u00e7\u00e3o para elementos de haste de perfura\u00e7\u00e3o na ind\u00fastria de petr\u00f3leo e g\u00e1s.<\/li>\n<li><strong>DIN EN 10269:<\/strong> A\u00e7os para fins de press\u00e3o.<\/li>\n<\/ul>\n<hr \/>\n<h2><strong>Sustentabilidade e Reciclagem<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145 \u00e9 totalmente recicl\u00e1vel, contribuindo para pr\u00e1ticas de economia circular. Sua alta durabilidade garante longa vida \u00fatil, reduzindo desperd\u00edcio de material ao longo do tempo.<\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-le0vn7sm-5a412c824a817f7d0e1a56157805e39d'  ><div class='avia_textblock' ><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_1 fusion-builder-column-2 fusion-one-full fusion-column-first fusion-column-last 1_1\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-text\">\n<h2><strong>FAQ sobre AISI 4145 \/ 4145H SteelIs <\/strong><\/h2>\n<h2><strong>A\u00e7o AISI 4145 para colares de perfura\u00e7\u00e3o de petr\u00f3leo?<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145 possui boas propriedades mec\u00e2nicas abrangentes e resist\u00eancia \u00e0 corros\u00e3o ap\u00f3s o tratamento t\u00e9rmico, e \u00e9 o a\u00e7o de baixa liga de m\u00e9dio carbono mais amplamente utilizado na ind\u00fastria internacional de petr\u00f3leo.<\/p>\n<p>Devido \u00e0 sua boa resist\u00eancia e tenacidade e resist\u00eancia \u00e0 corros\u00e3o por H2S, o a\u00e7o AISI 4145 pode ser usado como material de colar de perfura\u00e7\u00e3o no processo de explora\u00e7\u00e3o de petr\u00f3leo e tamb\u00e9m para a produ\u00e7\u00e3o de tubos de perfura\u00e7\u00e3o de petr\u00f3leo. Especialmente por sua excelente resist\u00eancia \u00e0 corros\u00e3o em ambientes de \u00f3leo e g\u00e1s, o a\u00e7o AISI 4145 tamb\u00e9m \u00e9 utilizado na produ\u00e7\u00e3o de oleodutos.<\/p>\n<h2><strong>O a\u00e7o AISI 4145 \u00e9 resistente \u00e0 corros\u00e3o?<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145 \u00e9 utilizado principalmente na produ\u00e7\u00e3o de colares de perfura\u00e7\u00e3o de petr\u00f3leo, podendo tamb\u00e9m ser utilizado na produ\u00e7\u00e3o de inv\u00f3lucros de petr\u00f3leo, que s\u00e3o utilizados em ambientes corrosivos em campos de petr\u00f3leo.<\/p>\n<p>A boa estrutura do a\u00e7o AISI 4145 (sorbita temperada) pode melhorar a resist\u00eancia \u00e0 corros\u00e3o. Al\u00e9m disso, o elemento de liga Cr pode ser dissolvido em F, o que pode melhorar a resist\u00eancia \u00e0 corros\u00e3o, e o elemento Mo tamb\u00e9m ajuda a melhorar a resist\u00eancia \u00e0 corros\u00e3o.<\/p>\n<h2><strong>O a\u00e7o AISI 4145 pode ser soldado?<\/strong><\/h2>\n<p>Calculado a partir da composi\u00e7\u00e3o do AISI 4145, seu CE \u00e9 de cerca de 0,85, e sua soldabilidade \u00e9 muito ruim. Na soldagem do a\u00e7o AISI 4145, o pr\u00e9-aquecimento antes da soldagem e o tratamento t\u00e9rmico p\u00f3s-soldagem s\u00e3o obrigat\u00f3rios. Processo de soldagem rigoroso para AISI 4145 pode garantir a confiabilidade da soldagem.<\/p>\n<h2><strong>O que \u00e9 AISI 4145H?<\/strong><\/h2>\n<p>Ao adicionar \u201cH\u201d, isso significa que o a\u00e7o AISI 4145 \u00e9 necess\u00e1rio para garantir a temperabilidade. Na verdade, n\u00e3o h\u00e1 diferen\u00e7a na composi\u00e7\u00e3o entre o a\u00e7o AISI 4145H e o a\u00e7o AISI 4145.<\/p>\n<h2><strong>O que \u00e9 AISI 4145H MOD?<\/strong><\/h2>\n<p>MOD significa Modificar. Portanto, AISI 4145H MOD \u00e9 uma melhoria com base no a\u00e7o AISI 4145, que pode ser devido a mudan\u00e7as na composi\u00e7\u00e3o ou requisitos de desempenho mais rigorosos.<\/p>\n<p>colar de broca AISI 4145H MOD<\/p>\n<p><img decoding=\"async\" class=\"wp-image-3631 alignleft lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-225x300.jpg\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-200x267.jpg 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-225x300.jpg 225w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-400x533.jpg 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1.jpg 450w\" alt=\"4145H MOD barra oca\" width=\"300\" height=\"400\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-200x267.jpg 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-225x300.jpg 225w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-400x533.jpg 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1.jpg 450w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2021\/12\/4145H-hollow-bar-1-225x300.jpg\" data-sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n<div class=\"fusion-clearfix\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-3 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_1 fusion-builder-column-3 fusion-one-full fusion-column-first fusion-column-last 1_1\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-text\">\n<p><strong>\u00a0<\/strong><\/p>\n<h2><strong>A\u00e7o AISI 4145 Vs A\u00e7o 50CrMo4<\/strong><\/h2>\n<p>Como representante do a\u00e7o de baixa liga da s\u00e9rie Cr-Mo de m\u00e9dio carbono, o AISI 4145 \u00e9 derivado do padr\u00e3o americano ASTM A29, enquanto o 50CrMo4 pertence ao padr\u00e3o europeu EN10083. Em primeiro lugar, vamos dar uma olhada nas diferen\u00e7as de sua composi\u00e7\u00e3o. consulte o tabela abaixo.<\/p>\n<table id=\"tablepress-263\" class=\"tablepress tablepress-id-263\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\">Padr\u00e3o<\/td>\n<td class=\"column-2\">Grau<\/td>\n<td class=\"column-3\">C<\/td>\n<td class=\"column-4\">Si<\/td>\n<td class=\"column-5\">Mn<\/td>\n<td class=\"column-6\">P<\/td>\n<td class=\"column-7\">S<\/td>\n<td class=\"column-8\">Cr<\/td>\n<td class=\"column-9\">Mo<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\">ASTM A29<\/td>\n<td class=\"column-2\">4145<\/td>\n<td class=\"column-3\">0,43-0,48<\/td>\n<td class=\"column-4\">0,15-0,35<\/td>\n<td class=\"column-5\">0,75-1,0<\/td>\n<td class=\"column-6\">\u22640,035<\/td>\n<td class=\"column-7\">\u22640,04<\/td>\n<td class=\"column-8\">0,8-1,1<\/td>\n<td class=\"column-9\">0,15-0,25<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-1\">EN10083<\/td>\n<td class=\"column-2\">50CrMo4<\/td>\n<td class=\"column-3\">\u00a00,46-0,54<\/td>\n<td class=\"column-4\">\u22640,4<\/td>\n<td class=\"column-5\">0,5-0,8<\/td>\n<td class=\"column-6\">\u22640,035<\/td>\n<td class=\"column-7\">\u22640,035<\/td>\n<td class=\"column-8\">0,9-1,2<\/td>\n<td class=\"column-9\">0,15-0,30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Da tabela acima, a principal diferen\u00e7a entre os elementos est\u00e1 em C e Mn, e os outros elementos s\u00e3o geralmente muito pequenos. Devido a essas diferen\u00e7as, o a\u00e7o 50CrMo4 \u00e9 superior ao a\u00e7o AISI 4145 em termos de resist\u00eancia e temperabilidade, mas seu desempenho de soldagem \u00e9 relativamente pobre.<\/p>\n<p>O a\u00e7o AISI 4145 \u00e9 usado principalmente na ind\u00fastria do petr\u00f3leo, como colares de perfura\u00e7\u00e3o, tubos de perfura\u00e7\u00e3o e oleodutos. Enquanto o 50CrMo4 \u00e9 usado para pe\u00e7as forjadas que requerem maior resist\u00eancia ou se\u00e7\u00e3o transversal maior do que o a\u00e7o 42CrMo4, como grandes engrenagens para tra\u00e7\u00e3o de locomotivas, engrenagens de transmiss\u00e3o do supercharger, eixos traseiros, cilindros do motor, juntas de tubos de perfura\u00e7\u00e3o de po\u00e7os de petr\u00f3leo de 1200~2000m de profundidade e ferramentas de pesca, etc.<\/p>\n<\/div>\n<div class=\"fusion-text\">\n<h2 class=\"fusion-responsive-typography-calculated\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>PROCESSO DE PRODU\u00c7\u00c3O DO A\u00c7O AISI 4145H<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145H adota design de composi\u00e7\u00e3o apropriado e tecnologia de produ\u00e7\u00e3o avan\u00e7ada para obter boas propriedades mec\u00e2nicas, de modo que possa atender aos requisitos de desempenho do a\u00e7o 4145H no processo de perfura\u00e7\u00e3o de petr\u00f3leo.<\/p>\n<p>O processo de produ\u00e7\u00e3o do a\u00e7o AISI 4145H:<\/p>\n<p><em>Pr\u00e9-tratamento de a\u00e7o fundido \u2192Conversor\u2192LF\u2192RH\u2192Fundi\u00e7\u00e3o cont\u00ednua-fundi\u00e7\u00e3o cont\u00ednua\u2192Entrega a quente\u2192Aquecimento\u2192Lamina\u00e7\u00e3o a quente\/Forjamento\u2192Preserva\u00e7\u00e3o de calor\u2192Endireitamento\u2192Recozimento\u2192Retifica\u00e7\u00e3o\u2192Inspe\u00e7\u00e3o\u2192Entrega<\/em><\/p>\n<p>A fim de obter um blank de fundi\u00e7\u00e3o uniforme e compacto, no processo de fundi\u00e7\u00e3o do a\u00e7o fundido, ele passa por tratamento de dessulfura\u00e7\u00e3o por pulveriza\u00e7\u00e3o de p\u00f3 \u00e0 base de magn\u00e9sio, agita\u00e7\u00e3o com g\u00e1s inerte, tratamento de desgaseifica\u00e7\u00e3o a v\u00e1cuo e elemento de microliga V\/Ti para tratar as inclus\u00f5es no a\u00e7o .<\/p>\n<p>No processo de fundi\u00e7\u00e3o, deve-se prestar aten\u00e7\u00e3o \u00e0 combina\u00e7\u00e3o de C e Cr, Mn, Mo e outros elementos. Esses meios garantem que os elementos de liga no a\u00e7o sejam uniformes e uma estrutura de ferrita mais uniforme pode ser obtida.<\/p>\n<p>A tecnologia de lamina\u00e7\u00e3o controlada e resfriamento controlado pode ajudar a melhorar as propriedades mec\u00e2nicas do a\u00e7o 4145H, torn\u00e1-lo com boas propriedades mec\u00e2nicas, garantir a uniformidade da dureza e prepar\u00e1-lo para o processamento profundo subsequente.<\/p>\n<div class=\"FFpbKc\">\n<div data-show-delay-ms=\"250\" data-append-to-body=\"false\" data-propagate-tooltip-mouseover-events=\"true\" data-anchor-corner=\"bottom-left\" data-enable-skip-handler=\"false\" data-popup-corner=\"top-left\">\n<div><\/div>\n<\/div>\n<\/div>\n<div class=\"FFpbKc\">\n<div>\n<div data-show-delay-ms=\"250\" data-append-to-body=\"false\" data-propagate-tooltip-mouseover-events=\"true\" data-anchor-corner=\"bottom-left\" data-enable-skip-handler=\"false\" data-popup-corner=\"top-left\">\n<div class=\"VfPpkd-Bz112c-RLmnJb\"><\/div>\n<\/div>\n<\/div>\n<div class=\"r375lc\">\n<div class=\"aJIq1d\" data-language-code=\"auto\" data-language-name=\"\u68c0\u6d4b\u8bed\u8a00\" data-text=\"\" data-crosslingual-hint=\"null\" data-location=\"1\" data-enable-toggle-playback-speed=\"true\">\n<div data-show-delay-ms=\"250\" data-append-to-body=\"true\" data-propagate-tooltip-mouseover-events=\"true\" data-anchor-corner=\"bottom-left\" data-enable-skip-handler=\"false\" data-popup-corner=\"top-left\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 id=\"c3353\" class=\"oBOnKe fusion-responsive-typography-calculated\" data-fontsize=\"18\" data-lineheight=\"27px\"><\/h2>\n<div class=\"dePhmb\">\n<div class=\"eyKpYb\" data-language=\"en\" data-original-language=\"zh-CN\" data-result-index=\"0\">\n<div class=\"J0lOec\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-clearfix\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-4 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_1 fusion-builder-column-4 fusion-one-full fusion-column-first fusion-column-last 1_1\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-text\">\n<h2 class=\"fusion-responsive-typography-calculated\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>TRATAMENTO T\u00c9RMICO DE A\u00c7O AISI 4145<\/strong><\/h2>\n<ul>\n<li><strong>Recozimento do A\u00e7o AISI 4145<\/strong><\/li>\n<\/ul>\n<p>O processo de recozimento do a\u00e7o AISI 4145 \u00e9 o recozimento completo, que pode recristalizar completamente a estrutura do a\u00e7o para eliminar os defeitos na estrutura ap\u00f3s o material ser forjado ou laminado.<\/p>\n<p>De acordo com v\u00e1rios estudos e demonstra\u00e7\u00f5es, a melhor temperatura de recozimento para AISI 4145 \u00e9 820 \u2103, e ser\u00e1 resfriada com o forno ap\u00f3s ser mantida por um tempo apropriado. A estrutura final do a\u00e7o \u00e9 ferrita e perlita, e sua dureza superficial \u00e9 de cerca de 200HBW.<\/p>\n<ul>\n<li><strong>A\u00e7o AISI 4145 T\u00eampera e Revenimento<\/strong><\/li>\n<\/ul>\n<p>O a\u00e7o AISI 4145 pode obter desempenho geral satisfat\u00f3rio por meio de tratamento t\u00e9rmico de t\u00eampera e revenido para atender aos requisitos de equipamentos de petr\u00f3leo.<\/p>\n<p>A temperatura de aquecimento e o tempo de espera s\u00e3o duas partes importantes que afetam a qualidade da t\u00eampera. A estrutura obtida ap\u00f3s a austenitiza\u00e7\u00e3o obtida por aquecimento afetar\u00e1 o desempenho do material ap\u00f3s a t\u00eampera.<\/p>\n<p>Para o a\u00e7o AISI 4145, a temperatura de t\u00eampera adequada est\u00e1 entre 840-860\u00baC, e o tempo de espera depende da espessura do material.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3668 lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram.png\" sizes=\"(max-width: 840px) 100vw, 840px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-200x104.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-300x155.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-400x207.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-600x311.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-768x398.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-800x414.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram.png 840w\" alt=\"Diagrama de t\u00eampera AISI 4145H\" width=\"840\" height=\"435\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-200x104.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-300x155.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-400x207.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-600x311.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-768x398.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram-800x414.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram.png 840w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Quenching-Diagram.png\" data-sizes=\"(max-width: 840px) 100vw, 840px\" \/><\/p>\n<p>Diagrama de t\u00eampera do a\u00e7o AISI 4145H<\/p>\n<p>O processo de revenimento deve ser seguido ap\u00f3s a t\u00eampera imediatamente. Quando o a\u00e7o 4145 \u00e9 usado como a\u00e7o de colar de broca, ele precisa ser revenido a uma temperatura alta de 560-630\u00baC para obter sorbita revenida e, finalmente, obter boas propriedades mec\u00e2nicas abrangentes.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-3670 lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram.png\" sizes=\"(max-width: 839px) 100vw, 839px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-200x103.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-300x155.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-400x207.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-600x310.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-768x397.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-800x414.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram.png 839w\" alt=\"Diagrama de t\u00eampera de a\u00e7o AISI 4145H\" width=\"839\" height=\"434\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-200x103.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-300x155.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-400x207.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-600x310.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-768x397.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram-800x414.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram.png 839w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Steel-Tempering-Diagram.png\" data-sizes=\"(max-width: 839px) 100vw, 839px\" \/><\/p>\n<p>Diagrama de t\u00eampera de a\u00e7o AISI 4145H<\/p>\n<ul>\n<li><strong>Propriedade mec\u00e2nica do a\u00e7o AISI 4145H na condi\u00e7\u00e3o Q&amp;T<\/strong><\/li>\n<\/ul>\n<table id=\"tablepress-264\" class=\"tablepress tablepress-id-264\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\">Padr\u00e3o<\/td>\n<td class=\"column-2\">Di\u00e2metro<br \/>\nmil\u00edmetros<\/td>\n<td class=\"column-3\">Resist\u00eancia \u00e0 trac\u00e7\u00e3o<br \/>\nMpa<\/td>\n<td class=\"column-4\">For\u00e7a de rendimento<br \/>\nMpa<\/td>\n<td class=\"column-5\">Alongamento<br \/>\n%<\/td>\n<td class=\"column-6\">Redu\u00e7\u00e3o<br \/>\n%<\/td>\n<td class=\"column-7\">Impacto Charpy<br \/>\nJ<\/td>\n<td class=\"column-8\">Dureza<br \/>\nHBW<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\" rowspan=\"2\">API ESPEC 7-1<\/td>\n<td class=\"column-2\">79,4-174,6<\/td>\n<td class=\"column-3\">\u2265965<\/td>\n<td class=\"column-4\">\u2265758<\/td>\n<td class=\"column-5\">\u226513<\/td>\n<td class=\"column-6\">\u226545<\/td>\n<td class=\"column-7\">\u226554<\/td>\n<td class=\"column-8\">285-341<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-2\">177,8-279,4<\/td>\n<td class=\"column-3\">\u2265931<\/td>\n<td class=\"column-4\">\u2265689<\/td>\n<td class=\"column-5\">\u226513<\/td>\n<td class=\"column-6\">\u226545<\/td>\n<td class=\"column-7\">\u226554<\/td>\n<td class=\"column-8\">285-341<\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-1\">Dados reais<\/td>\n<td class=\"column-2\">280<\/td>\n<td class=\"column-3\">966<\/td>\n<td class=\"column-4\">866<\/td>\n<td class=\"column-5\">19<\/td>\n<td class=\"column-6\">57<\/td>\n<td class=\"column-7\">70\/74\/74<\/td>\n<td class=\"column-8\">295<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-5 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_1 fusion-builder-column-5 fusion-one-full fusion-column-first fusion-column-last 1_1\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-clearfix\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-6 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_2 fusion-builder-column-6 fusion-one-half fusion-column-first 1_2\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-text\">\n<h2 class=\"\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>GUIA DE COMPRA DO A\u00c7O AISI 4145H\u00a0<\/strong><\/h2>\n<p>Normalmente, quando falamos da ind\u00fastria de petr\u00f3leo e g\u00e1s, a primeira coisa que vem \u00e0 mente s\u00e3o os graus de a\u00e7o representativos da s\u00e9rie Cr-Mo, como AISI 4140, AISI 4130, AISI 4340 e AISI 4145H. Na verdade, todos eles desempenham um papel importante em aplica\u00e7\u00f5es industriais.<\/p>\n<p>O AISI 4145H de que estamos falando aqui, com suas caracter\u00edsticas de desempenho incompar\u00e1veis, substitui completamente o a\u00e7o AISI 4140 usado no passado e agora \u00e9 usado como a\u00e7o especial para colares de perfura\u00e7\u00e3o de petr\u00f3leo.<\/p>\n<p>Em nosso guia, contaremos tudo o que voc\u00ea precisa saber sobre o AISI 4145H como a\u00e7o para colares de perfura\u00e7\u00e3o de \u00f3leo, que acreditamos que o ajudar\u00e1 a encontrar a\u00e7o AISI 4145H de alta qualidade com mais facilidade.<\/p>\n<\/div>\n<div class=\"fusion-clearfix\"><\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_2 fusion-builder-column-7 fusion-one-half fusion-column-last 1_2\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-sep-clear\"><\/div>\n<div class=\"fusion-separator fusion-full-width-sep sep-none\"><\/div>\n<p><span class=\"fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" class=\"img-responsive wp-image-4028 lazyloaded\" title=\"AISI 4145 A\u00e7o redondo forjado com condi\u00e7\u00e3o QT\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition.jpg\" sizes=\"(max-width: 800px) 100vw, 400px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition-200x150.jpg 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition-400x300.jpg 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition.jpg 600w\" alt=\"AISI 4145 A\u00e7o redondo forjado com condi\u00e7\u00e3o QT\" width=\"600\" height=\"450\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition-200x150.jpg 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition-400x300.jpg 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition.jpg 600w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145-Forged-round-steel-with-QT-condition.jpg\" data-sizes=\"(max-width: 800px) 100vw, 400px\" \/><\/span><\/p>\n<div class=\"fusion-clearfix\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-7 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\">\n<div class=\"fusion-builder-row fusion-row\">\n<div class=\"fusion-layout-column fusion_builder_column fusion_builder_column_1_1 fusion-builder-column-8 fusion-one-full fusion-column-first fusion-column-last 1_1\">\n<div class=\"fusion-column-wrapper\" data-bg-url=\"\">\n<div class=\"fusion-text\">\n<h2 class=\"\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>O QUE \u00c9 A DESIGNA\u00c7\u00c3O DE GRAU DE A\u00c7O AISI 4145H?<\/strong><\/h2>\n<p>Quando se trata de tipos de a\u00e7o dos EUA, o American Iron and Steel Institute (AISI) e a Society of Automotive Engineers (SAE) s\u00e3o sempre assunto de conversa. Na verdade, essas duas institui\u00e7\u00f5es est\u00e3o envolvidas na padroniza\u00e7\u00e3o do sistema de codifica\u00e7\u00e3o digital do a\u00e7o e eles projetaram em conjunto um sistema de numera\u00e7\u00e3o simples: Unified Numbering System, conhecido como UNS.<\/p>\n<p>Como forma de identificar os a\u00e7os especificados nos limites da banda de temperabilidade, o sufixo \u201cH\u201d foi acrescentado ao n\u00famero de s\u00e9rie convencional. No Sistema de Numera\u00e7\u00e3o Unificado (UNS), o \u201cH\u201d aparece como um prefixo. Aqui, ao contr\u00e1rio do c\u00f3digo UNS G41450 do a\u00e7o 4145, o c\u00f3digo UNS do a\u00e7o 4145H \u00e9 H41450.<\/p>\n<p>Depois de falar sobre o significado da letra H, o restante dos n\u00fameros fica f\u00e1cil de entender. Da s\u00e9rie de perguntas frequentes anterior, podemos ver facilmente que o 4145H pertence \u00e0 s\u00e9rie 41XX. Consulte a tabela abaixo para obter detalhes.<\/p>\n<table id=\"tablepress-238\" class=\"tablepress tablepress-id-238\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\" rowspan=\"2\">A\u00e7o Molibd\u00eanio<\/td>\n<td class=\"column-2\">40XX<\/td>\n<td class=\"column-3\">Mo 0,20-0,25%<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-2\">44XX<\/td>\n<td class=\"column-3\">Mo 0,40-0,52%<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-1\"><strong>A\u00e7o cromo-molibd\u00eanio<\/strong><\/td>\n<td class=\"column-2\"><strong>41XX<\/strong><\/td>\n<td class=\"column-3\"><strong>Cr 0,50-0,95%, Mo 0,12-0,30%<\/strong><\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-1\" rowspan=\"2\">A\u00e7o de N\u00edquel-Cromo-Molibd\u00eanio<\/td>\n<td class=\"column-2\">43XX<\/td>\n<td class=\"column-3\">Ni 1,82%, Cr 0,50-0,80%, Mo 0,25%<\/td>\n<\/tr>\n<tr class=\"row-5\">\n<td class=\"column-2\">47XX<\/td>\n<td class=\"column-3\">Ni 1,05%, Cr 0,45%, Mo 0,20-0,35%<\/td>\n<\/tr>\n<tr class=\"row-6\">\n<td class=\"column-1\" rowspan=\"2\">A\u00e7o N\u00edquel-Molibd\u00eanio<\/td>\n<td class=\"column-2\">46XX<\/td>\n<td class=\"column-3\">Ni 0,85-1,82%, Mo 0,20-0,25%<\/td>\n<\/tr>\n<tr class=\"row-7\">\n<td class=\"column-2\">48XX<\/td>\n<td class=\"column-3\">Ni 3,50%, Mo 0,25%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Como pode ser visto na tabela acima, 4145H pertence ao a\u00e7o de baixa liga da s\u00e9rie Cr-Mo, e o significado dos dois \u00faltimos d\u00edgitos 45 em 4145H representa um teor m\u00e9dio de carbono de 0,45%.<\/p>\n<\/div>\n<div class=\"fusion-text\">\n<h2 class=\"fusion-responsive-typography-calculated\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>O QUE \u00c9 DRILL COLLAR?<\/strong><\/h2>\n<p>O colar de perfura\u00e7\u00e3o \u00e9 o principal componente do conjunto da ferramenta de perfura\u00e7\u00e3o que \u00e9 instalado entre o tubo de perfura\u00e7\u00e3o e a broca. Durante o processo de perfura\u00e7\u00e3o, o colar de perfura\u00e7\u00e3o n\u00e3o \u00e9 apenas submetido a tens\u00f5es como tens\u00e3o, compress\u00e3o, flex\u00e3o e tor\u00e7\u00e3o, mas tamb\u00e9m tamb\u00e9m ao atrito da parede do po\u00e7o e ao desgaste e corros\u00e3o do \u00f3leo, vapor, lama e outros meios.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4260 size-full lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly.png\" sizes=\"(max-width: 747px) 100vw, 747px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-200x143.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-300x214.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-400x286.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-600x429.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly.png 747w\" alt=\"montagem t\u00edpica da haste de perfura\u00e7\u00e3o\" width=\"747\" height=\"534\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-200x143.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-300x214.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-400x286.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly-600x429.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly.png 747w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/typical-drill-stem-assembly.png\" data-sizes=\"(max-width: 747px) 100vw, 747px\" \/><\/p>\n<p>Conjunto T\u00edpico da Haste de Perfura\u00e7\u00e3o<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-4261 lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY.png\" sizes=\"(max-width: 686px) 100vw, 686px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-200x43.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-300x64.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-400x86.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-600x129.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY.png 686w\" alt=\"\" width=\"686\" height=\"147\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-200x43.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-300x64.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-400x86.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY-600x129.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY.png 686w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/KEY.png\" data-sizes=\"(max-width: 686px) 100vw, 686px\" \/><\/p>\n<h2><strong>Qual \u00e9 a fun\u00e7\u00e3o do colar de perfura\u00e7\u00e3o?<\/strong><\/h2>\n<ul>\n<li>Aplique WOB na broca<\/li>\n<li>Mantenha o tubo de perfura\u00e7\u00e3o em tens\u00e3o e garanta a resist\u00eancia da coluna de perfura\u00e7\u00e3o trabalhando sob compress\u00e3o<\/li>\n<li>Reduza a vibra\u00e7\u00e3o, balan\u00e7o e batida da broca, mantenha a broca funcionando sem problemas<\/li>\n<li>Desvio do po\u00e7o de controle<\/li>\n<\/ul>\n<h2><strong>Quais s\u00e3o os tipos de colares de broca?<\/strong><\/h2>\n<ul>\n<li><strong>colar de broca comum<\/strong><\/li>\n<\/ul>\n<p>Colares de broca comuns, tamb\u00e9m conhecidos como colares de broca cil\u00edndricos ou colares de broca integrais. O colar de broca \u00e9 geralmente feito de liga de a\u00e7o comum, a se\u00e7\u00e3o transversal do corpo do tubo \u00e9 redonda por dentro e por fora, e as roscas de conex\u00e3o s\u00e3o usinadas em ambas as extremidades.<\/p>\n<ul>\n<li><strong>colar de broca espiral<\/strong><\/li>\n<\/ul>\n<p>O colar de broca espiral \u00e9 usinado com tr\u00eas ranhuras espirais direitas na superf\u00edcie cil\u00edndrica externa do colar de broca redondo, e o peso \u00e9 4% menor que o do colar de broca comum do mesmo tamanho.<\/p>\n<p>Na perfura\u00e7\u00e3o direcional, o colar de perfura\u00e7\u00e3o helicoidal reduz a \u00e1rea de contato com a parede do po\u00e7o e pode efetivamente prevenir a ader\u00eancia de press\u00e3o diferencial, por isso tem sido amplamente utilizado.<\/p>\n<ul>\n<li><strong>colar de broca n\u00e3o magn\u00e9tico<\/strong><\/li>\n<\/ul>\n<p>Os colares de perfura\u00e7\u00e3o n\u00e3o magn\u00e9ticos s\u00e3o usados principalmente para monitoramento no processo de perfura\u00e7\u00e3o de petr\u00f3leo, e sua estrutura \u00e9 a mesma dos colares de perfura\u00e7\u00e3o integrais.<\/p>\n<p>O material tem boa permeabilidade magn\u00e9tica baixa e boa usinabilidade. \u00c9 forjado por meio de uma rigorosa an\u00e1lise de composi\u00e7\u00e3o qu\u00edmica, e o material foi testado quanto \u00e0s propriedades mec\u00e2nicas para garantir que a dureza, tenacidade, valor de impacto e resist\u00eancia \u00e0 corros\u00e3o atendam aos padr\u00f5es.<\/p>\n<p><strong>A tend\u00eancia futura dos colares de perfura\u00e7\u00e3o<\/strong><\/p>\n<p>Os recursos de petr\u00f3leo e g\u00e1s que podem ser facilmente explorados no mundo se esgotaram. Os campos de petr\u00f3leo e g\u00e1s rec\u00e9m-descobertos t\u00eam m\u00e1s condi\u00e7\u00f5es de perfura\u00e7\u00e3o e profundidades de perfura\u00e7\u00e3o aumentadas, o que exige requisitos mais elevados para a fabrica\u00e7\u00e3o de colares de perfura\u00e7\u00e3o.<\/p>\n<p>Atualmente, o desenvolvimento de novos a\u00e7os para ferramentas de perfura\u00e7\u00e3o de petr\u00f3leo e o desenvolvimento de a\u00e7os de alta resist\u00eancia e alta tenacidade para colares de perfura\u00e7\u00e3o de petr\u00f3leo t\u00eam atra\u00eddo cada vez mais aten\u00e7\u00e3o. Ao melhorar as propriedades mec\u00e2nicas, melhorar sua resist\u00eancia \u00e0 corros\u00e3o por sulfeto de hidrog\u00eanio tem um significado pr\u00e1tico importante para prolongar a vida \u00fatil dos materiais e reduzir as perdas econ\u00f4micas.<\/p>\n<\/div>\n<div class=\"fusion-text\">\n<h2 class=\"\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>PERGUNTAS R\u00c1PIDAS PARA O COLAR DE BROCA AISI 4145H<\/strong><\/h2>\n<h2><strong>Quais s\u00e3o os requisitos de inclus\u00e3o n\u00e3o met\u00e1lica para colares de perfura\u00e7\u00e3o AISI 4145H?<\/strong><\/h2>\n<p>As inclus\u00f5es n\u00e3o met\u00e1licas n\u00e3o afetam apenas a pureza do a\u00e7o, mas tamb\u00e9m afetam o desempenho do material, reduzindo especialmente a plasticidade e a tenacidade ao impacto do material.<\/p>\n<p>Para colares de broca AISI 4145H, as inclus\u00f5es n\u00e3o met\u00e1licas devem atender aos seguintes requisitos<\/p>\n<table id=\"tablepress-188\" class=\"tablepress tablepress-id-188\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\" colspan=\"8\"><strong>Inclus\u00f5es n\u00e3o met\u00e1licas<\/strong><\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\" colspan=\"2\">UMA<\/td>\n<td class=\"column-3\" colspan=\"2\">B<\/td>\n<td class=\"column-5\" colspan=\"2\">C<\/td>\n<td class=\"column-7\" colspan=\"2\">D<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-1\">Multar<\/td>\n<td class=\"column-2\">grosso<\/td>\n<td class=\"column-3\">Multar<\/td>\n<td class=\"column-4\">grosso<\/td>\n<td class=\"column-5\">Multar<\/td>\n<td class=\"column-6\">grosso<\/td>\n<td class=\"column-7\">Multar<\/td>\n<td class=\"column-8\">grosso<\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-1\">M\u00e1x. 2,0<\/td>\n<td class=\"column-2\">M\u00e1x. 1,5<\/td>\n<td class=\"column-3\">M\u00e1x. 2,0<\/td>\n<td class=\"column-4\">M\u00e1x. 1,5<\/td>\n<td class=\"column-5\">M\u00e1x. 2,0<\/td>\n<td class=\"column-6\">M\u00e1x. 1,5<\/td>\n<td class=\"column-7\">M\u00e1x. 2,0<\/td>\n<td class=\"column-8\">M\u00e1x. 1,5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong>Quais s\u00e3o os requisitos para temperabilidade dos colares de broca AISI 4145H?<\/strong><\/h2>\n<p>O colar de broca AISI 4145H tem altos requisitos de dureza, resist\u00eancia e tenacidade. Podemos entender seu desempenho atrav\u00e9s da curva de temperabilidade. De um modo geral, o a\u00e7o com alta temperabilidade possui altas propriedades mec\u00e2nicas.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4263 lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test.png\" sizes=\"(max-width: 600px) 100vw, 600px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-200x106.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-300x160.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-400x213.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-600x319.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-768x409.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test.png 793w\" alt=\"Teste de extin\u00e7\u00e3o 4145H\" width=\"600\" height=\"319\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-200x106.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-300x160.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-400x213.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-600x319.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test-768x409.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test.png 793w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/4145H-Quenching-test.png\" data-sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Curva de temperabilidade AISI 4145H<\/p>\n<p>Para colares de broca AISI 4145H, a temperabilidade deve atender aos seguintes requisitos<\/p>\n<table id=\"tablepress-339\" class=\"tablepress tablepress-id-339\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\" rowspan=\"2\">Grau<\/td>\n<td class=\"column-2\" colspan=\"3\">Endurecimento final, HRC<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-2\">J1.5<\/td>\n<td class=\"column-3\">J25<\/td>\n<td class=\"column-4\">J50<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-1\">AISI 4145H<\/td>\n<td class=\"column-2\">\u226556<\/td>\n<td class=\"column-3\">\u226550<\/td>\n<td class=\"column-4\">\u226550<\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-1\" colspan=\"4\">Normalizando: 880-900 \u2103, T\u00eampera: 860 \u2103<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong>Quais s\u00e3o os requisitos de estrutura macrosc\u00f3pica para os colares de perfura\u00e7\u00e3o AISI 4145H?<\/strong><\/h2>\n<p>A estrutura macrosc\u00f3pica afeta principalmente a compacidade do material, que por sua vez tem grande influ\u00eancia na processabilidade e nas propriedades mec\u00e2nicas do a\u00e7o. Para os colares de broca AISI 4145H, a estrutura macrosc\u00f3pica deve atender aos seguintes requisitos<\/p>\n<table id=\"tablepress-340\" class=\"tablepress tablepress-id-340\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\">Porosidade Geral (Grau)<\/td>\n<td class=\"column-2\">Porosidade Central (grau)<\/td>\n<td class=\"column-3\">Segrega\u00e7\u00e3o de padr\u00e3o (grau)<\/td>\n<td class=\"column-4\">Segrega\u00e7\u00e3o geral de pontos (grau)<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\">\u22642,0<\/td>\n<td class=\"column-2\">\u22642,0<\/td>\n<td class=\"column-3\">\u22642,0<\/td>\n<td class=\"column-4\">n\u00e3o permitido<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong>Como prevenir manchas brancas no a\u00e7o AISI 4145H?<\/strong><\/h2>\n<p>Como uma liga de a\u00e7o da s\u00e9rie Cr-Mo, AISI 4145H tem forte sensibilidade a manchas brancas. Para evitar a ocorr\u00eancia de manchas brancas, geralmente fazemos um tratamento t\u00e9rmico de desidrogena\u00e7\u00e3o no a\u00e7o AISI 4145H forjado imediatamente. A curva de tratamento t\u00e9rmico \u00e9 a seguinte<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-4274 aligncenter lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram.png\" sizes=\"(max-width: 835px) 100vw, 835px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-200x103.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-300x154.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-400x205.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-600x308.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-768x394.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-800x410.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram.png 835w\" alt=\"Diagrama de Desidrogena\u00e7\u00e3o AISI 4145H\" width=\"835\" height=\"428\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-200x103.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-300x154.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-400x205.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-600x308.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-768x394.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram-800x410.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram.png 835w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/AISI-4145H-Dehydrogenation-Diagram.png\" data-sizes=\"(max-width: 835px) 100vw, 835px\" \/><\/p>\n<h2><strong>Por que usar a\u00e7o AISI 4145H em vez de a\u00e7o AISI 4140 para colares de broca?<\/strong><\/h2>\n<p>O a\u00e7o para colar broca AISI 4145H \u00e9 produzido de acordo com as normas americanas. Por ser um a\u00e7o de m\u00e9dia e baixa liga de carbono, possui algumas semelhan\u00e7as com o a\u00e7o AISI 4140 em termos de propriedades mec\u00e2nicas e corros\u00e3o sob tens\u00e3o.<\/p>\n<p>Antes da d\u00e9cada de 1990, o AISI 4140 era mais usado, mas o 4140 n\u00e3o era satisfat\u00f3rio em termos de propriedades mec\u00e2nicas e resist\u00eancia \u00e0 corros\u00e3o por sulfeto de hidrog\u00eanio.<\/p>\n<p>As boas propriedades mec\u00e2nicas e a resist\u00eancia \u00e0 corros\u00e3o por sulfeto de hidrog\u00eanio do a\u00e7o AISI 4145H t\u00eam um impacto significativo no aumento de sua vida \u00fatil, na redu\u00e7\u00e3o de acidentes em campos petrol\u00edferos e na redu\u00e7\u00e3o de custos.<\/p>\n<\/div>\n<div class=\"fusion-text\">\n<h2 class=\"fusion-responsive-typography-calculated\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>COMO FAZER COLAR DE BROCA AISI 4145H DE ALTA QUALIDADE?<\/strong><\/h2>\n<p>O a\u00e7o AISI 4145H tem boas propriedades mec\u00e2nicas abrangentes e resist\u00eancia \u00e0 corros\u00e3o ap\u00f3s o tratamento t\u00e9rmico, e \u00e9 o a\u00e7o de baixa liga de m\u00e9dio carbono mais amplamente utilizado na ind\u00fastria do petr\u00f3leo. colares de perfura\u00e7\u00e3o e materiais de tubos de perfura\u00e7\u00e3o no processo de produ\u00e7\u00e3o de petr\u00f3leo.<\/p>\n<p>Devido \u00e0 particularidade do material, a qualidade dos colares de broca feitos de a\u00e7o AISI 4145H \u00e9 dif\u00edcil de satisfazer. Portanto, nos deparamos com a quest\u00e3o de como fabricar colares de broca AISI 4145H de alta qualidade, ent\u00e3o teremos uma boa discuss\u00e3o sobre este t\u00f3pico.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-4230 lazyloaded\" src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart.png\" sizes=\"(max-width: 600px) 100vw, 600px\" srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-200x170.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-300x255.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-400x340.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-600x511.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-768x654.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-800x681.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart.png 805w\" alt=\"Fluxograma do processo de fabrica\u00e7\u00e3o do colar de perfura\u00e7\u00e3o\" width=\"600\" height=\"511\" data-srcset=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-200x170.png 200w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-300x255.png 300w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-400x340.png 400w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-600x511.png 600w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-768x654.png 768w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart-800x681.png 800w, https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart.png 805w\" data-src=\"https:\/\/www.round-bars.com\/wp-content\/uploads\/2022\/01\/Drill-Collar-Manufacturing-process-flow-chart.png\" data-sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>A partir da figura acima, podemos ver aproximadamente um fluxograma de produ\u00e7\u00e3o do Drill Collar, falaremos sobre alguns pontos de controle importantes no fluxograma com a\u00e7o AISI 4145H.<\/p>\n<ul>\n<li><strong>Forjamento<\/strong><\/li>\n<\/ul>\n<p>Atrav\u00e9s de um rigoroso processo de forjamento, forjar material 4145H de alta qualidade \u00e9 um pr\u00e9-requisito importante para a fabrica\u00e7\u00e3o de colares de perfura\u00e7\u00e3o de alta qualidade.<\/p>\n<p>Controlando estritamente a temperatura de forjamento, o tempo de forjamento e a deforma\u00e7\u00e3o de forjamento, os dendritos grosseiros originais e os gr\u00e3os colunares nos lingotes s\u00e3o transformados em estruturas recristalizadas equiaxiais com gr\u00e3os mais finos e tamanho uniforme, e tamb\u00e9m faz a segrega\u00e7\u00e3o original, frouxid\u00e3o, poros, inclus\u00e3o de esc\u00f3ria compacto e fechado no lingote de a\u00e7o 4145H.<\/p>\n<p>Para colar de broca AISI 4145H, processe conforme abaixo<\/p>\n<ul>\n<li><strong>Temperatura inicial de forjamento\uff1a<\/strong>1150-1180 \u2103<\/li>\n<li><strong>Temperatura Final de Forjamento\uff1a<\/strong>acima de 850 \u2103<\/li>\n<li><strong>Rela\u00e7\u00e3o de Forjamento\uff1a<\/strong>acima de 6:1<\/li>\n<\/ul>\n<p>Depois de forjada, a estrutura de a\u00e7o 4145H torna-se mais compacta, o que melhora a plasticidade e as propriedades mec\u00e2nicas.<\/p>\n<ul>\n<li><strong>Tratamento t\u00e9rmico<\/strong><\/li>\n<\/ul>\n<p>Como o processo mais cr\u00edtico, o tratamento t\u00e9rmico do material AISI 4145H determina diretamente se ferramentas de colar de perfura\u00e7\u00e3o de alta qualidade podem ser fabricadas. De acordo com os requisitos de\u00a0<span class=\"doc_title fs_c_76\">API SPEC 7-1\uff0cAISI 4145H deve ser temperado (Q) e revenido (T) para atingir os requisitos de desempenho.<\/span><\/p>\n<p>De acordo com nossa rica experi\u00eancia, faremos o tratamento t\u00e9rmico de normaliza\u00e7\u00e3o para AISI 4145H com anteced\u00eancia e, em seguida, faremos perguntas e testes para garantir que o material possa atender perfeitamente aos requisitos. Os requisitos espec\u00edficos s\u00e3o mostrados na tabela abaixo.<\/p>\n<table id=\"tablepress-337\" class=\"tablepress tablepress-id-337\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\">PROCESSO<\/td>\n<td class=\"column-2\">FAIXA DE TEMPERATURA<\/td>\n<td class=\"column-3\">TEMPO \u00c0 TEMPERATURA<\/td>\n<td class=\"column-4\">RESFRIAMENTO<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\">Normalizando<\/td>\n<td class=\"column-2\">860-890 \u2103<\/td>\n<td class=\"column-3\">0,5h\/polegada de espessura do metal<\/td>\n<td class=\"column-4\">Resfrie o ar at\u00e9 a temperatura ambiente<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-1\">T\u00eampera<\/td>\n<td class=\"column-2\">840-860 \u2103<\/td>\n<td class=\"column-3\">0,5h\/polegada de espessura do metal<\/td>\n<td class=\"column-4\">\u00c1gua ou \u00d3leo\/Pol\u00edmero<\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-1\">Temperamento<\/td>\n<td class=\"column-2\">560-630 \u2103<\/td>\n<td class=\"column-3\">0,5h\/polegada de espessura do metal<\/td>\n<td class=\"column-4\">Resfrie o ar at\u00e9 a temperatura ambiente<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<ul>\n<li><strong>Inspe\u00e7\u00e3o UT\/MT<\/strong><\/li>\n<\/ul>\n<p>A inspe\u00e7\u00e3o ultrass\u00f4nica e a inspe\u00e7\u00e3o por part\u00edculas magn\u00e9ticas s\u00e3o formas de teste n\u00e3o destrutivo. Para colares de perfura\u00e7\u00e3o AISI 4145H, o melhor momento para o teste \u00e9 ap\u00f3s o tratamento t\u00e9rmico. O teste ultrass\u00f4nico inspeciona principalmente defeitos internos, enquanto o teste de part\u00edculas magn\u00e9ticas visa defeitos de superf\u00edcie, principalmente a detec\u00e7\u00e3o de rachaduras.<\/p>\n<p>A inspe\u00e7\u00e3o UT e MT \u00e9 um m\u00e9todo importante para garantir a m\u00e1xima seguran\u00e7a e confiabilidade dos materiais AISI 4145H, que podem ser rigorosamente implementados de acordo com a cl\u00e1usula 11 da API SPEC 7-1.<\/p>\n<ul>\n<li><strong>Teste de Amostragem<\/strong><\/li>\n<\/ul>\n<p>O desempenho da amostra de material AISI 4145H representa, em \u00faltima an\u00e1lise, o desempenho do colar de perfura\u00e7\u00e3o do produto final, portanto, a detec\u00e7\u00e3o da amostra tamb\u00e9m \u00e9 uma parte crucial.<\/p>\n<p>Os princ\u00edpios da amostragem AISI 4145H s\u00e3o implementados de acordo com a cl\u00e1usula 8.2.1 da API SPEC 7-1. Ap\u00f3s a amostragem, ela \u00e9 processada em barras de teste, e o processamento subsequente s\u00f3 pode ser continuado ap\u00f3s a qualifica\u00e7\u00e3o dos dados laboratoriais.<\/p>\n<\/div>\n<div class=\"fusion-text\">\n<h2 class=\"\" data-fontsize=\"18\" data-lineheight=\"27px\"><strong>ONDE COMPRAR A\u00c7O AISI 4145H DE ALTA QUALIDADE?<\/strong><\/h2>\n<p>Com qual fabricante voc\u00ea deve trabalhar? Sem d\u00favida, Waldun \u00e9 seu parceiro de confian\u00e7a. Como fabricante de forja AISI 4145H com mais de 10 anos de experi\u00eancia em fabrica\u00e7\u00e3o, ningu\u00e9m est\u00e1 mais familiarizado com ela do que n\u00f3s. Somos capazes de fornecer material AISI 4145H de alta qualidade de acordo com API SPEC7-1.<\/p>\n<h2><strong>O que fornecemos para o a\u00e7o AISI 4145H<\/strong><\/h2>\n<table id=\"tablepress-6\" class=\"tablepress tablepress-id-6\">\n<tbody class=\"row-hover\">\n<tr class=\"row-1\">\n<td class=\"column-1\">Formul\u00e1rio de Fornecimento<\/td>\n<td class=\"column-2\">Tamanho (mm)<\/td>\n<td class=\"column-3\">Processar<\/td>\n<td class=\"column-4\" colspan=\"2\">Toler\u00e2ncia<\/td>\n<\/tr>\n<tr class=\"row-2\">\n<td class=\"column-1\" rowspan=\"5\">Redondo<\/td>\n<td class=\"column-2\">\u03a66-\u03a6100<\/td>\n<td class=\"column-3\">Desenho frio<\/td>\n<td class=\"column-4\">Preto brilhante<\/td>\n<td class=\"column-5\">Melhor H11<\/td>\n<\/tr>\n<tr class=\"row-3\">\n<td class=\"column-2\" rowspan=\"2\">\u03a616-\u03a6350<\/td>\n<td class=\"column-3\" rowspan=\"2\">Laminados a quente<\/td>\n<td class=\"column-4\">Preto<\/td>\n<td class=\"column-5\">-0 \/ + 1mm<\/td>\n<\/tr>\n<tr class=\"row-4\">\n<td class=\"column-4\">Descascado \/ mo\u00eddo<\/td>\n<td class=\"column-5\">Melhor H11<\/td>\n<\/tr>\n<tr class=\"row-5\">\n<td class=\"column-2\" rowspan=\"2\">\u03a690-\u03a61000<\/td>\n<td class=\"column-3\" rowspan=\"2\">Forjado a Quente<\/td>\n<td class=\"column-4\">Preto<\/td>\n<td class=\"column-5\">-0 \/ + 5mm<\/td>\n<\/tr>\n<tr class=\"row-6\">\n<td class=\"column-4\">Rough Turned<\/td>\n<td class=\"column-5\">-0 \/ + 3mm<\/td>\n<\/tr>\n<tr class=\"row-7\">\n<td class=\"column-1\" rowspan=\"2\">Plano \/ Quadrado \/ Bloco<\/td>\n<td class=\"column-2\">Espessura: 120-800<\/td>\n<td class=\"column-3\" rowspan=\"2\">Forjado a Quente<\/td>\n<td class=\"column-4\">Preto<\/td>\n<td class=\"column-5\">-0 \/ + 8 mm<\/td>\n<\/tr>\n<tr class=\"row-8\">\n<td class=\"column-2\">Largura: 120-1500<\/td>\n<td class=\"column-4\">Rough Machined<\/td>\n<td class=\"column-5\">-0 \/ + 3mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Amostra Gr\u00e1tis de A\u00e7o AISI 4145H<\/p>\n<p><em>Tratamento t\u00e9rmico<\/em><\/p>\n<ul>\n<li>Normalizado (+ N)<\/li>\n<li>Recozido(+A)<\/li>\n<li>Temperado e revenido (+QT)<\/li>\n<\/ul>\n<p><em>Usinagem<\/em><\/p>\n<p>Torneamento\/Fresamento\/Perfura\u00e7\u00e3o\/Descama\u00e7\u00e3o\/Polimento<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-cu4z9-70b30b2fe50974341e282238efa251b3\">\n.flex_column.av-cu4z9-70b30b2fe50974341e282238efa251b3{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-cu4z9-70b30b2fe50974341e282238efa251b3 av_one_third  avia-builder-el-3  el_after_av_two_third  avia-builder-el-last  flex_column_div av-zero-column-padding'     ><p><section  class='av_textblock_section av-knx9ufli-85501fecf744e33762b057966e6927ea'  ><div class='avia_textblock' >\n<\/div><\/section><br \/>\n<div  class='avia-builder-widget-area clearfix  avia-builder-el-5  el_after_av_textblock  avia-builder-el-last'><section id=\"portfoliobox-2\" class=\"widget clearfix avia-widget-container newsbox\"><h3 class=\"widgettitle\">Produtos Mais recentes<\/h3><ul class=\"news-wrap image_size_widget\"><li class=\"news-content post-format-standard\"><div class=\"news-link\"><a class='news-thumb' title=\"Leia: A\u00e7o 60CrMoV18-5\" href=\"https:\/\/waldunsteel.com\/pt\/products\/60crmov18-5-steel\/\"><img decoding=\"async\" fetchpriority=\"high\" width=\"36\" height=\"36\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg\" class=\"wp-image-2212 avia-img-lazy-loading-not-2212 attachment-widget size-widget wp-post-image\" alt=\"1.2358\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-36x36.jpg 36w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-300x300.jpg 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-80x80.jpg 80w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-12x12.jpg 12w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-180x180.jpg 180w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358-705x705.jpg 705w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2024\/01\/1.2358.jpg 750w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/><\/a><div class=\"news-headline\"><a class='news-title' title=\"Leia: A\u00e7o 60CrMoV18-5\" href=\"https:\/\/waldunsteel.com\/pt\/products\/60crmov18-5-steel\/\">A\u00e7o 60CrMoV18-5<\/a><span class=\"news-time\">11 de janeiro de 2024 - 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9h30<\/span><\/div><\/div><\/li><\/ul><span class=\"seperator extralight-border\"><\/span><\/section><section id=\"text-3\" class=\"widget clearfix widget_text\"><h3 class=\"widgettitle\">ENTRE EM CONTATO COM A WALDUN STEEL<\/h3>\t\t\t<div class=\"textwidget\"><p><strong>M\u00f3vel: <\/strong><\/p>\n<p>+8618652469606<\/p>\n<p><strong>O email: <\/strong><\/p>\n<p>iguhongtao@gmail.com<\/p>\n<\/div>\n\t\t<span class=\"seperator extralight-border\"><\/span><\/section><section id=\"media_image-2\" class=\"widget clearfix widget_media_image\"><img decoding=\"async\" width=\"300\" height=\"158\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1.png\" class=\"image wp-image-1937  attachment-full size-full\" alt=\"waldun a\u00e7o iso 9001 logo 300x158\" style=\"max-width: 100%; height: auto;\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1.png 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2022\/05\/Waldun-Steel-ISO-9001-Logo-300x158-1-18x9.png 18w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><span class=\"seperator extralight-border\"><\/span><\/section><\/div><\/p><\/div><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":1527,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"portfolio_entries":[30],"class_list":["post-1525","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-alloysteel"],"_links":{"self":[{"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/portfolio\/1525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/comments?post=1525"}],"version-history":[{"count":0,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/portfolio\/1525\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/media\/1527"}],"wp:attachment":[{"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/media?parent=1525"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/tags?post=1525"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/waldunsteel.com\/pt\/wp-json\/wp\/v2\/portfolio_entries?post=1525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}