{"id":5642,"date":"2020-02-25T05:24:37","date_gmt":"2020-02-25T05:24:37","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5642"},"modified":"2025-12-30T01:31:27","modified_gmt":"2025-12-30T01:31:27","slug":"o-que-e-recozimento-de-solucao-de-aco-inoxidavel-3","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/o-que-e-recozimento-de-solucao-de-aco-inoxidavel-3\/","title":{"rendered":"O que \u00e9 o recozimento por solu\u00e7\u00e3o de a\u00e7o inoxid\u00e1vel?"},"content":{"rendered":"

Os a\u00e7os inoxid\u00e1veis austen\u00edticos s\u00e3o amolecido por recozimento em solu\u00e7\u00e3o<\/a> . Em geral, tubos e acess\u00f3rios de a\u00e7o inoxid\u00e1vel<\/a> s\u00e3o aquecidos a 950 a 1150 graus Celsius e mantidos por um per\u00edodo de tempo.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

O objetivo disso \u00e9 fazer com que os carbonetos e v\u00e1rios elementos de liga sejam dissolvidos de maneira suficientemente uniforme na austenita. Depois disso, o tubo de a\u00e7o \u00e9 rapidamente temperado e resfriado, e o carbono e outros elementos de liga demoram muito para precipitar, e uma estrutura de austenita pura \u00e9 obtida, o que \u00e9 chamado de recozimento por solu\u00e7\u00e3o.<\/p>\n\n\n\n

Aqui est\u00e3o 3 efeitos do recozimento de solu\u00e7\u00f5es:<\/p>\n\n\n\n

1. Torne a estrutura e a composi\u00e7\u00e3o do tubo de a\u00e7o uniforme, o que \u00e9 especialmente importante para as mat\u00e9rias-primas, porque a temperatura de lamina\u00e7\u00e3o e a taxa de resfriamento de cada se\u00e7\u00e3o do fio laminado a quente s\u00e3o diferentes, resultando em microestrutura inconsistente.<\/p>\n\n\n\n

Em altas temperaturas, a atividade at\u00f4mica se intensifica, a fase \u03c3 se dissolve e a composi\u00e7\u00e3o qu\u00edmica tende a ser uniforme. Ap\u00f3s o resfriamento, uma estrutura monof\u00e1sica uniforme \u00e9 obtida.<\/p>\n\n\n\n

2. Elimine o endurecimento por trabalho para facilitar o processamento cont\u00ednuo a frio.<\/p>\n\n\n\n

Atrav\u00e9s do tratamento em solu\u00e7\u00e3o, a rede torcida \u00e9 restaurada, os gr\u00e3os alongados e quebrados s\u00e3o recristalizados, a tens\u00e3o interna \u00e9 eliminada, a resist\u00eancia \u00e0 tra\u00e7\u00e3o do tubo de a\u00e7o \u00e9 reduzida e o alongamento \u00e9 aumentado.<\/p>\n\n\n\n

3. Restaure a resist\u00eancia \u00e0 corros\u00e3o inerente do a\u00e7o inoxid\u00e1vel.<\/p>\n\n\n\n

Devido ao trabalho a frio, a precipita\u00e7\u00e3o do carboneto e os defeitos da rede reduzem a resist\u00eancia \u00e0 corros\u00e3o do a\u00e7o inoxid\u00e1vel. Ap\u00f3s o tratamento da solu\u00e7\u00e3o, a resist\u00eancia \u00e0 corros\u00e3o do tubo de a\u00e7o foi restaurada ao melhor estado.<\/p>\n\n\n\n

Para tubos de a\u00e7o inoxid\u00e1vel<\/a> e acess\u00f3rios, os tr\u00eas elementos de recozimento de solu\u00e7\u00e3o s\u00e3o temperatura, tempo de reten\u00e7\u00e3o e taxa de resfriamento. A temperatura da solu\u00e7\u00e3o \u00e9 determinada principalmente pela composi\u00e7\u00e3o qu\u00edmica.<\/p>\n\n\n\n

De modo geral, para aqueles graus com elementos de alta liga e alto teor, a temperatura da solu\u00e7\u00e3o deve ser aumentada de acordo. Especialmente para a\u00e7os com alto teor de mangan\u00eas, molibd\u00eanio, n\u00edquel e sil\u00edcio, os efeitos de amolecimento s\u00f3 podem ser alcan\u00e7ados se a temperatura da solu\u00e7\u00e3o for aumentada e suficientemente dissolvida.<\/p>\n\n\n\n

No entanto, em a\u00e7os estabilizados, como 1Cr18Ni9Ti, os carbonetos dos elementos estabilizadores s\u00e3o suficientemente dissolvidos na austenita quando a temperatura da solu\u00e7\u00e3o \u00e9 alta e, no resfriamento subsequente, eles precipitar\u00e3o nos limites de gr\u00e3o como Cr23C6, causando corros\u00e3o intergranular. Para evitar que os carbonetos (TiC e Nbc) do elemento de estabiliza\u00e7\u00e3o se decomponham e n\u00e3o se dissolvam, geralmente se utiliza o limite inferior de temperatura da solu\u00e7\u00e3o.<\/p>","protected":false},"featured_media":5643,"template":"","categories":[186],"tags":[],"class_list":["post-5642","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nWhat Is Stainless Steel Solution Annealing? - Stainless Steel Pipe and Fittings | KAYSUNS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kaysuns.com\/pt\/blog\/o-que-e-recozimento-de-solucao-de-aco-inoxidavel-3\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is Stainless Steel Solution Annealing? - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Austenitic stainless steels are softened by solution annealing . 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