{"id":2051,"date":"2023-03-28T13:06:39","date_gmt":"2023-03-28T13:06:39","guid":{"rendered":"https:\/\/waldunsteel.com\/?p=2051"},"modified":"2023-03-28T13:25:29","modified_gmt":"2023-03-28T13:25:29","slug":"how-to-choose-aisi-4140-steel-bar","status":"publish","type":"post","link":"https:\/\/waldunsteel.com\/pt\/como-escolher-aisi-4140-barra-de-aco\/","title":{"rendered":"Como escolher a barra de a\u00e7o AISI 4140?"},"content":{"rendered":"<div  class='flex_column av-54vzs3-413a9ef1e56cd5c4ebb800e0aeffb402 av_two_third  avia-builder-el-0  el_before_av_one_third  avia-builder-el-first  first flex_column_div'     ><section  class='av_textblock_section av-lfs9tlx8-9767a17c821d036ba6f6b2b8509e9a05'  ><div class='avia_textblock' ><h1>Como escolher a barra de a\u00e7o AISI 4140?<\/h1>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-1278\" src=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4140-Alloy-Steel-Round-Bars.jpg\" alt=\"barras redondas de a\u00e7o-liga aisi 4140\" width=\"495\" height=\"399\" srcset=\"https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4140-Alloy-Steel-Round-Bars.jpg 495w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4140-Alloy-Steel-Round-Bars-300x242.jpg 300w, https:\/\/waldunsteel.com\/wp-content\/uploads\/2021\/03\/AISI-4140-Alloy-Steel-Round-Bars-16x12.jpg 16w\" sizes=\"(max-width: 495px) 100vw, 495px\" \/><\/p>\n<p>A escolha da barra de a\u00e7o AISI 4140 envolve a considera\u00e7\u00e3o de v\u00e1rios fatores, incluindo o uso pretendido, as propriedades mec\u00e2nicas necess\u00e1rias e o processo de fabrica\u00e7\u00e3o.<\/p>\n<h2>Aqui est\u00e3o alguns fatores importantes a serem considerados ao selecionar a barra de a\u00e7o AISI 4140:<\/h2>\n<h2>Uso pretendido:<\/h2>\n<p>Determine a aplica\u00e7\u00e3o espec\u00edfica da barra de a\u00e7o. AISI 4140 \u00e9 uma liga de a\u00e7o vers\u00e1til que \u00e9 comumente usada em uma variedade de ind\u00fastrias, como aeroespacial, automotiva, constru\u00e7\u00e3o e petr\u00f3leo e g\u00e1s. O uso pretendido da barra de a\u00e7o determinar\u00e1 as propriedades mec\u00e2nicas e o tamanho necess\u00e1rios.<\/p>\n<h3>Aplica\u00e7\u00f5es para barra de a\u00e7o AISI 4140<\/h3>\n<p>A barra de a\u00e7o AISI 4140 \u00e9 uma barra de a\u00e7o de liga forte e vers\u00e1til com uma alta rela\u00e7\u00e3o resist\u00eancia-peso, tornando-a ideal para uma ampla gama de aplica\u00e7\u00f5es. \u00c9 comumente usado nas ind\u00fastrias automotiva, aeroespacial, de constru\u00e7\u00e3o e agr\u00edcola. Aqui est\u00e3o alguns usos espec\u00edficos da barra de a\u00e7o AISI 4140:<\/p>\n<h3>Componentes automotivos:<\/h3>\n<ul>\n<li>A barra de a\u00e7o AISI 4140 pode ser utilizada para a produ\u00e7\u00e3o de componentes como eixos de comando de v\u00e1lvulas, juntas de dire\u00e7\u00e3o, moentes de eixo, virabrequins e outras pe\u00e7as que exijam maior resist\u00eancia e durabilidade.<\/li>\n<\/ul>\n<h3>Componentes Aeroespaciais:<\/h3>\n<ul>\n<li>A barra de a\u00e7o AISI 4140 \u00e9 frequentemente utilizada em pe\u00e7as de aeronaves devido \u00e0 sua capacidade de suportar temperaturas e press\u00f5es extremas. Dos componentes do trem de pouso aos componentes do motor, o a\u00e7o AISI 4140 est\u00e1 \u00e0 altura da tarefa.<\/li>\n<\/ul>\n<h3>Componentes de constru\u00e7\u00e3o:<\/h3>\n<ul>\n<li>Em projetos de constru\u00e7\u00e3o como pontes ou grandes edif\u00edcios, as barras de a\u00e7o AISI 4140 s\u00e3o frequentemente especificadas devido \u00e0 sua excelente resist\u00eancia estrutural e resist\u00eancia \u00e0 corros\u00e3o.<\/li>\n<\/ul>\n<h3>Pe\u00e7as Agr\u00edcolas:<\/h3>\n<ul>\n<li>Muitas m\u00e1quinas agr\u00edcolas usam pe\u00e7as feitas de barras de a\u00e7o AISI 4140 devido \u00e0 sua resist\u00eancia superior ao desgaste em ambientes hostis. Estes incluem colheitadeiras, semeadoras, tratores e arados.<\/li>\n<\/ul>\n<h2>Propriedades mec\u00e2nicas:<\/h2>\n<p>A barra de a\u00e7o AISI 4140 \u00e9 uma liga de a\u00e7o de alta resist\u00eancia que oferece excelente tenacidade e ductilidade. Suas propriedades mec\u00e2nicas incluem:<\/p>\n<ul>\n<li>Resist\u00eancia \u00e0 tra\u00e7\u00e3o (ksi): 135-155<\/li>\n<li>For\u00e7a de Rendimento (ksi): 95 min<\/li>\n<li>Alongamento (% em 2\u2033): 12 min<\/li>\n<li>Faixa de dureza (Bhn): 288-321 m\u00e1x.<\/li>\n<li>Redu\u00e7\u00e3o de \u00c1rea (%): 50 min<\/li>\n<li>Dureza Brinell (Bhn): 293 m\u00e1x.<\/li>\n<\/ul>\n<p>A barra de a\u00e7o AISI 4140 oferece alta resist\u00eancia, tenacidade e resist\u00eancia ao desgaste. As propriedades mec\u00e2nicas da barra de a\u00e7o depender\u00e3o do tratamento t\u00e9rmico e do processo de fabrica\u00e7\u00e3o. O tratamento t\u00e9rmico mais comum para a barra de a\u00e7o AISI 4140 \u00e9 a t\u00eampera e o revenimento, que envolve o aquecimento da barra de a\u00e7o a uma temperatura elevada, o resfriamento r\u00e1pido em \u00f3leo ou \u00e1gua e o revenimento a uma temperatura mais baixa.<\/p>\n<h2>Tamanho e forma:<\/h2>\n<p>O tamanho e a forma da barra de a\u00e7o depender\u00e3o do uso pretendido e das propriedades mec\u00e2nicas exigidas. A barra de a\u00e7o AISI 4140 est\u00e1 dispon\u00edvel em uma variedade de tamanhos e formas, incluindo barras redondas, quadradas e hexagonais.<\/p>\n<h2>Qualidade e certifica\u00e7\u00e3o:<\/h2>\n<p>Ao selecionar a barra de a\u00e7o AISI 4140, \u00e9 importante garantir que o a\u00e7o atenda aos padr\u00f5es de qualidade e certifica\u00e7\u00f5es exigidos. Procure barras de a\u00e7o certificadas por organiza\u00e7\u00f5es respeit\u00e1veis, como ASTM International ou SAE International.<\/p>\n<h2>Reputa\u00e7\u00e3o do fornecedor:<\/h2>\n<p>Escolha um fornecedor respeit\u00e1vel que possa fornecer barras de a\u00e7o de qualidade confi\u00e1vel e consistente. Procure fornecedores com um bom hist\u00f3rico de fornecimento de barras de a\u00e7o AISI 4140 de alta qualidade.<\/p>\n<p><strong>No geral, a sele\u00e7\u00e3o da barra de a\u00e7o AISI 4140 envolve considerar a aplica\u00e7\u00e3o espec\u00edfica, propriedades mec\u00e2nicas necess\u00e1rias, tamanho e forma, qualidade e certifica\u00e7\u00e3o e reputa\u00e7\u00e3o do fornecedor. Considerando cuidadosamente esses fatores, voc\u00ea pode escolher a barra de a\u00e7o AISI 4140 certa para sua aplica\u00e7\u00e3o.<\/strong><\/p>\n<h2>Aqui est\u00e3o algumas perguntas frequentes (FAQs) sobre a barra de a\u00e7o AISI 4140:<\/h2>\n<h2>O que \u00e9 barra de a\u00e7o AISI 4140?<\/h2>\n<p>O AISI 4140 \u00e9 um a\u00e7o de baixa liga que cont\u00e9m cromo, molibd\u00eanio e mangan\u00eas. \u00c9 comumente usado em aplica\u00e7\u00f5es onde s\u00e3o necess\u00e1rias alta resist\u00eancia, tenacidade e resist\u00eancia ao desgaste e \u00e0 fadiga, como nas ind\u00fastrias automotiva e aeroespacial, perfura\u00e7\u00e3o de petr\u00f3leo e g\u00e1s e fabrica\u00e7\u00e3o de equipamentos pesados.<\/p>\n<h2>Quais s\u00e3o as propriedades da barra de a\u00e7o AISI 4140?<\/h2>\n<p>A barra de a\u00e7o AISI 4140 possui alta resist\u00eancia \u00e0 tra\u00e7\u00e3o, boa ductilidade e excelente tenacidade. Tamb\u00e9m possui alta resist\u00eancia \u00e0 fadiga e boa resist\u00eancia ao desgaste. O a\u00e7o \u00e9 prontamente usin\u00e1vel na condi\u00e7\u00e3o recozida e pode ser tratado termicamente para atingir uma ampla gama de propriedades mec\u00e2nicas.<\/p>\n<h2>Quais s\u00e3o as aplica\u00e7\u00f5es da barra de a\u00e7o AISI 4140?<\/h2>\n<p>A barra de a\u00e7o AISI 4140 \u00e9 utilizada em uma ampla gama de aplica\u00e7\u00f5es, incluindo:<\/p>\n<ul>\n<li>Componentes automotivos e aeroespaciais<\/li>\n<li>Equipamento de perfura\u00e7\u00e3o de petr\u00f3leo e g\u00e1s<\/li>\n<li>Fabrica\u00e7\u00e3o de equipamentos pesados<\/li>\n<li>Maquinaria agr\u00edcola<\/li>\n<li>Equipamento de mineracao<\/li>\n<li>m\u00e1quinas de constru\u00e7\u00e3o<\/li>\n<li>Ferramentas e equipamentos industriais<\/li>\n<\/ul>\n<h2>Quais s\u00e3o os tamanhos comuns da barra de a\u00e7o AISI 4140?<\/h2>\n<p>A barra de a\u00e7o AISI 4140 est\u00e1 dispon\u00edvel em uma variedade de tamanhos, normalmente variando de 12 mm a 100 mm de di\u00e2metro. Tamb\u00e9m pode ser fornecido em diferentes comprimentos e formas, incluindo redondo, quadrado, plano e hexagonal.<\/p>\n<h2>Quais s\u00e3o os diferentes tratamentos t\u00e9rmicos para a barra de a\u00e7o AISI 4140?<\/h2>\n<p>A barra de a\u00e7o AISI 4140 pode ser tratada termicamente para atingir uma gama de propriedades mec\u00e2nicas, dependendo dos requisitos da aplica\u00e7\u00e3o. Alguns dos tratamentos t\u00e9rmicos comuns incluem:<\/p>\n<p>Recozimento: para amaciar o a\u00e7o e melhorar a usinabilidade<br \/>\nNormaliza\u00e7\u00e3o: para melhorar a tenacidade e a ductilidade<br \/>\nT\u00eampera e revenido: para melhorar a resist\u00eancia e dureza<br \/>\nAust\u00eampera: para melhorar a tenacidade e reduzir a distor\u00e7\u00e3o<br \/>\nAl\u00edvio de tens\u00f5es: para reduzir as tens\u00f5es residuais e melhorar a estabilidade dimensional<\/p>\n<h2>Quais as vantagens de usar a barra de a\u00e7o AISI 4140?<\/h2>\n<p>A barra de a\u00e7o AISI 4140 oferece diversos benef\u00edcios, entre eles:<\/p>\n<ul>\n<li>Alta resist\u00eancia e tenacidade<\/li>\n<li>Excelente resist\u00eancia ao desgaste e \u00e0 fadiga<\/li>\n<li>Boa usinabilidade e soldabilidade<\/li>\n<li>Ampla gama de op\u00e7\u00f5es de tratamento t\u00e9rmico<\/li>\n<li>Custo-benef\u00edcio em compara\u00e7\u00e3o com outros a\u00e7os de alta resist\u00eancia<\/li>\n<\/ul>\n<p>Estas s\u00e3o algumas das perguntas frequentes relacionadas \u00e0 barra de a\u00e7o AISI 4140. No entanto, observe que perguntas espec\u00edficas podem variar dependendo da aplica\u00e7\u00e3o e dos requisitos do setor.<\/p>\n<\/div><\/section><\/div><div  class='flex_column av-4p95fn-71ef0673c60eaabc67ccc4ed5ad3f609 av_one_third  avia-builder-el-2  el_after_av_two_third  avia-builder-el-last  flex_column_div'     ><p><section  class='av_textblock_section av-lfs9u2xn-97d74b0435f1c7173aac81ba010a85b6'  ><div class='avia_textblock' >\n<\/div><\/section><br \/>\n<div  class='avia-builder-widget-area clearfix  avia-builder-el-4  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\/produtos-2\/60crmov18-5-steel\/\"><img fetchpriority=\"high\" 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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, 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