{"id":5636,"date":"2020-02-21T04:18:29","date_gmt":"2020-02-21T04:18:29","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=5636"},"modified":"2026-03-25T03:44:42","modified_gmt":"2026-03-25T03:44:42","slug":"processos-e-etapas-de-decapagem-e-passivacao-de-tubos-sem-costura-de-aco-inoxidavel","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/processos-e-etapas-de-decapagem-e-passivacao-de-tubos-sem-costura-de-aco-inoxidavel\/","title":{"rendered":"Processos e etapas de decapagem e passiva\u00e7\u00e3o de tubos sem costura de a\u00e7o inoxid\u00e1vel"},"content":{"rendered":"

Processos e etapas de decapagem e passiva\u00e7\u00e3o de tubo sem costura de a\u00e7o inoxid\u00e1vel<\/h2>\n

Todos sabem que a f\u00e1brica de tubos de a\u00e7o sem costura deve ser decapada e passivada ap\u00f3s a produ\u00e7\u00e3o para se tornar um tubo de a\u00e7o inoxid\u00e1vel sem costura<\/a>.<\/p>\n

O que voc\u00ea sabe sobre o processo e as etapas de decapagem e passiva\u00e7\u00e3o<\/a> de tubos de a\u00e7o inoxid\u00e1vel sem costura? Vamos l\u00e1.<\/p>\n

\"tubos<\/a>
tubos de a\u00e7o inoxid\u00e1vel sem costura<\/figcaption><\/figure>\n

1, prepara\u00e7\u00f5es<\/strong><\/p>\n

2, desengorduramento qu\u00edmico:<\/strong><\/p>\n

(1) O desengorduramento qu\u00edmico adota o m\u00e9todo de imers\u00e3o no tanque. O tanque de desengorduramento \u00e9 feito de chapa de a\u00e7o, e a parede interna \u00e9 revestida com PVC ou polietileno.<\/p>\n

(2) Use \u00e1cido n\u00edtrico 12 ~ 15% (por volume) para interromper o tratamento de desengorduramento qu\u00edmico. A temperatura \u00e9 de 40 \u00b0 C ~ 60 \u00b0 C e o tempo \u00e9 de 2 ~ 4 horas.<\/p>\n

(3) Quando o tubo sem costura de a\u00e7o inoxid\u00e1vel estiver mergulhado no tanque, preste aten\u00e7\u00e3o ao local para evitar que o ar fique preso no tubo.<\/p>\n

(4) Durante o processo de imers\u00e3o, o tubo sem costura de a\u00e7o inoxid\u00e1vel deve ser movido para cima e para baixo, de cabe\u00e7a para baixo ou de cabe\u00e7a para baixo, de modo que a solu\u00e7\u00e3o da cavidade interna seja alterada de tempos em tempos para melhorar o efeito. Retire o tubo de a\u00e7o inoxid\u00e1vel sem costura se necess\u00e1rio, enx\u00e1gue com \u00e1gua e pare de molhar.<\/p>\n

(5) Desengraxamento qu\u00edmico at\u00e9 que a superf\u00edcie do tubo sem costura de a\u00e7o inoxid\u00e1vel esteja completamente \u00famida.<\/p>\n

3, Enx\u00e1gue com \u00e1gua quente:<\/strong><\/p>\n

(1) O tubo sem costura de a\u00e7o inoxid\u00e1vel ap\u00f3s o desengorduramento \u00e9 retirado do tanque de desengorduramento e imerso em um tanque de \u00e1gua quente a cerca de 40 \u00b0 C a 60 \u00b0 C para enx\u00e1gue por 5-20 minutos.<\/p>\n

(2) O tanque de \u00e1gua quente \u00e9 feito de chapa de a\u00e7o e a parede interna \u00e9 revestida com PVC ou polietileno.<\/p>\n

(3) O conte\u00fado de \u00edons cloreto na \u00e1gua \u00e9 inferior a 25 ppm.<\/p>\n

4, Enx\u00e1g\u00fce com \u00e1gua fria:<\/strong><\/p>\n

(1), o tubo sem costura de a\u00e7o inoxid\u00e1vel que foi enxaguado com \u00e1gua \u00e9 interrompido com \u00e1gua sob press\u00e3o (press\u00e3o P\u22650,1 MPa).<\/p>\n

(2) O conte\u00fado de \u00edons cloreto na \u00e1gua \u00e9 inferior a 25 ppm.<\/p>\n

5, Passiva\u00e7\u00e3o:<\/strong><\/p>\n

(1) A passiva\u00e7\u00e3o adota o m\u00e9todo de bolha do tanque no tanque. A f\u00f3rmula da solu\u00e7\u00e3o de passiva\u00e7\u00e3o e o tempo de imers\u00e3o podem ser selecionados de acordo com a Tabela 2.3.<\/p>\n

(2) Fabrica\u00e7\u00e3o de placa de a\u00e7o para tanque de passiva\u00e7\u00e3o, a parede interna \u00e9 coberta com pl\u00e1stico \u00e0 prova de \u00e1cido.<\/p>\n

(3) Ao imergir no tanque, preste aten\u00e7\u00e3o ao local para evitar que o ar fique armazenado no tubo soldado de a\u00e7o inoxid\u00e1vel.<\/p>\n

(4) Durante o processo de imers\u00e3o, o tubo sem costura de a\u00e7o inoxid\u00e1vel deve ser movido para cima e para baixo, de cabe\u00e7a para baixo ou de cabe\u00e7a para baixo, de modo que a solu\u00e7\u00e3o da cavidade interna seja alterada de tempos em tempos para melhorar o efeito. Retire o tubo de a\u00e7o inoxid\u00e1vel sem costura se necess\u00e1rio, enx\u00e1gue com \u00e1gua e pare de molhar.<\/p>\n

6. Secagem:<\/strong><\/p>\n

Os tubos sem costura de a\u00e7o inoxid\u00e1vel passivados devem ser secos com ar comprimido limpo ou nitrog\u00eanio, e deve haver tempo suficiente (pelo menos 2 horas) para que os tubos sem costura de a\u00e7o inoxid\u00e1vel passem naturalmente ao ar.<\/p>\n

7. Inspe\u00e7\u00e3o:<\/strong><\/p>\n

Ap\u00f3s a passiva\u00e7\u00e3o do tubo sem costura de a\u00e7o inoxid\u00e1vel, o autoteste e a inspe\u00e7\u00e3o m\u00fatua devem ser interrompidos e, em seguida, submetidos ao inspetor de qualidade para interromper a aceita\u00e7\u00e3o mediante solicita\u00e7\u00e3o.<\/p>\n

8. Manuten\u00e7\u00e3o:<\/strong><\/p>\n

(1) Se o tubo sem costura de a\u00e7o inoxid\u00e1vel cuja apar\u00eancia precisa ser interrompida for interrompido, ele ser\u00e1 interrompido de acordo com a solicita\u00e7\u00e3o de pintura.<\/p>\n

(2) Tubos sem costura de a\u00e7o inoxid\u00e1vel ap\u00f3s a inspe\u00e7\u00e3o. Os fabricantes de tubos de a\u00e7o inoxid\u00e1vel sem costura devem vedar com tamp\u00f5es de pl\u00e1stico, parar a colagem e manuten\u00e7\u00e3o com um pano de tr\u00eas provas e parar a marca\u00e7\u00e3o.<\/p>\n

\n

O outro artigo de decapagem e passiva\u00e7\u00e3o de tubos de a\u00e7o sem costura:\u00a0Existem geralmente tr\u00eas tipos de decapagem e passiva\u00e7\u00e3o de tubos de a\u00e7o inoxid\u00e1vel<\/a><\/p>","protected":false},"featured_media":5323,"template":"","categories":[186],"tags":[],"class_list":["post-5636","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nProcesses And Steps Of Pickling And Passivation Of Stainless Steel Seamless Pipe - 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\/processos-e-etapas-de-decapagem-e-passivacao-de-tubos-sem-costura-de-aco-inoxidavel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Processes And Steps Of Pickling And Passivation Of Stainless Steel Seamless Pipe - Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"Processes and steps of pickling and passivation of stainless steel seamless pipe Everyone knows that the seamless steel pipe factory must be pickled and passivated after production in order to become a seamless stainless steel pipe. 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