{"id":5609,"date":"2020-02-13T07:21:43","date_gmt":"2020-02-13T07:21:43","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5609"},"modified":"2025-09-19T05:34:23","modified_gmt":"2025-09-19T05:34:23","slug":"por-que-o-tubo-soldado-de-aco-inoxidavel-enferruja-apos-a-soldagem","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/por-que-o-tubo-soldado-de-aco-inoxidavel-enferruja-apos-a-soldagem\/","title":{"rendered":"Por que o tubo de a\u00e7o inoxid\u00e1vel soldado enferrujar\u00e1 ap\u00f3s a soldagem"},"content":{"rendered":"

Por que o tubo soldado de a\u00e7o inoxid\u00e1vel enferrujar\u00e1 ap\u00f3s a soldagem<\/h2>\n

Todas as caracter\u00edsticas ben\u00e9ficas de Tubos soldados de a\u00e7o inoxid\u00e1vel 304<\/a> ser\u00e3o danificados nos m\u00e9todos de produ\u00e7\u00e3o e processamento, tais como processos mec\u00e2nicos de solda como solda el\u00e9trica, corte a laser, serragem, puncionamento e dobra.<\/p>\n

\"soldagem<\/a>
tubo e flange de a\u00e7o inoxid\u00e1vel soldado<\/figcaption><\/figure>\n

Sob tal tratamento, a pel\u00edcula anti-oxidante na camada superficial do tubo de a\u00e7o inoxid\u00e1vel<\/a> ser\u00e1 danificada at\u00e9 certo ponto, e \u00e9 pouco prov\u00e1vel que mantenha um tratamento de passiva\u00e7\u00e3o espont\u00e2neo e completo. Portanto, neste momento, o tubo de a\u00e7o inoxid\u00e1vel soldado causar\u00e1 corros\u00e3o parcial, mesmo sob padr\u00f5es de corros\u00e3o relativamente fracos.<\/p>\n

Os tubos soldados de a\u00e7o inoxid\u00e1vel ser\u00e3o oxidados a ar mais rapidamente nos lados interno e externo da solda e perto da solda. Em compara\u00e7\u00e3o com aquela antes da solda el\u00e9trica, a camada de \u00f3xido de ar na \u00e1rea descolorada \u00e9 relativamente espessa, e a composi\u00e7\u00e3o \u00e9 alterada (o teor de cromo \u00e9 reduzido), o que promove o enfraquecimento da capacidade de resistir a gravura parcial.<\/p>\n

Para o interior de tubos de a\u00e7o inoxid\u00e1vel soldados sem costura, pode ser usado um m\u00e9todo de sopro de dorso moderado para diminuir a \u00e1rea de oxida\u00e7\u00e3o e descolora\u00e7\u00e3o do ar de acordo com a aplica\u00e7\u00e3o.<\/p>\n

Ap\u00f3s a soldagem el\u00e9trica de tubos soldados de a\u00e7o inoxid\u00e1vel, tratamento p\u00f3s-soldagem<\/a> processos como decapagem, passiva\u00e7\u00e3o e fresagem devem ser realizados para remover as camadas de \u00f3xido de ar (placas coloridas) e reparar novamente a resist\u00eancia \u00e0 corros\u00e3o.<\/p>\n

Outras solu\u00e7\u00f5es incluem: m\u00e9todo qu\u00edmico: passiva\u00e7\u00e3o por decapagem (utilizando pasta decapante ou pulverizador de acordo com a imers\u00e3o), tratamento auxiliar de passiva\u00e7\u00e3o (ap\u00f3s a passiva\u00e7\u00e3o por decapagem) e polimento qu\u00edmico; m\u00e9todo mec\u00e2nico: remo\u00e7\u00e3o por jateamento de areia, entre camadas. As part\u00edculas de vidro ou porcelana s\u00e3o jateadas, aniquiladas, lavadas e polidas.<\/p>\n

Talvez voc\u00ea tamb\u00e9m queira ler:
\nA arte e a ci\u00eancia da soldagem de tubos<\/a>
\nComo distinguir entre tubos recozidos e n\u00e3o recozidos de a\u00e7o inoxid\u00e1vel soldado<\/a><\/p>","protected":false},"featured_media":5610,"template":"","categories":[186],"tags":[],"class_list":["post-5609","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nWhy Stainless Steel Welded Pipe Will Rust After Welding - 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\/por-que-o-tubo-soldado-de-aco-inoxidavel-enferruja-apos-a-soldagem\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Stainless Steel Welded Pipe Will Rust After Welding - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Why stainless steel welded pipe will rust after welding All the beneficial characteristics of 304 stainless steel welded pipes will be damaged in the production and processing methods, such as mechanical welding processes like electric welding, laser cutting, sawing, punching and bending. 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