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{"id":1991,"date":"2023-02-12T05:19:13","date_gmt":"2023-02-12T05:19:13","guid":{"rendered":"https:\/\/waldunsteel.com\/?p=1991"},"modified":"2023-02-12T05:23:09","modified_gmt":"2023-02-12T05:23:09","slug":"cold-drawn-steel","status":"publish","type":"post","link":"https:\/\/waldunsteel.com\/pt\/aco-estirado-a-frio\/","title":{"rendered":"A\u00e7o Trefilado a Frio"},"content":{"rendered":"

O que \u00e9 a\u00e7o trefilado a frio?<\/h1>\n
\n

PRINC\u00cdPIO DE DESENHO A FRIO<\/strong><\/h2>\n

O desenho a frio \u00e9 uma tecnologia de processamento de materiais. Para materiais met\u00e1licos, a trefila\u00e7\u00e3o a frio refere-se \u00e0 trefila\u00e7\u00e3o \u00e0 temperatura ambiente para obter uma certa forma e certas propriedades mec\u00e2nicas.<\/p>\n

A trefila\u00e7\u00e3o a frio geralmente \u00e9 um processo de trefila\u00e7\u00e3o for\u00e7ada do material atrav\u00e9s do orif\u00edcio da matriz de trefila\u00e7\u00e3o de fio de liga dura, que \u00e9 mais forte que a trefila\u00e7\u00e3o pura. O material trefilado a frio n\u00e3o \u00e9 apenas esticado longitudinalmente, mas tamb\u00e9m submetido \u00e0 extrus\u00e3o lateral ao mesmo tempo. Ap\u00f3s uma ou mais vezes de trefila\u00e7\u00e3o a frio, a treli\u00e7a interna desliza, a resist\u00eancia \u00e0 tra\u00e7\u00e3o pode ser aumentada em 50% a 90%, e a dureza \u00e9 aumentada, mas a plasticidade \u00e9 significativamente reduzida.<\/p>\n

\"Diagrama<\/p>\n<\/div>\n

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QUAL \u00c9 A PRECIS\u00c3O DIMENSIONAL DO A\u00c7O CIRCULADO ESTIRADO A FRIO?<\/strong><\/h2>\n