{"id":6667,"date":"2021-01-22T06:36:22","date_gmt":"2021-01-22T06:36:22","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6667"},"modified":"2022-06-30T08:55:29","modified_gmt":"2022-06-30T08:55:29","slug":"2205-processamento-duplex","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/2205-processamento-duplex\/","title":{"rendered":"2205 Duplex Processing"},"content":{"rendered":"

Processamento Wleding de a\u00e7o inoxid\u00e1vel 2205 Duplex<\/strong><\/h2>\n\n\n\n

O processamento duplex 2205 \u00e9 semelhante ao a\u00e7o inoxid\u00e1vel 316L em muitos aspectos, mas ainda existem algumas diferen\u00e7as importantes.<\/p>\n\n\n\n

O processamento do a\u00e7o inoxid\u00e1vel duplex 2205 \u00e9 semelhante ao 316L em muitos aspectos, mas ainda existem algumas diferen\u00e7as importantes.<\/p>\n\n\n\n

As opera\u00e7\u00f5es de conforma\u00e7\u00e3o a frio devem levar em considera\u00e7\u00e3o a maior resist\u00eancia e as caracter\u00edsticas de endurecimento por trabalho do a\u00e7o inoxid\u00e1vel duplex. O equipamento de conforma\u00e7\u00e3o pode exigir maior capacidade de carga e, durante as opera\u00e7\u00f5es de conforma\u00e7\u00e3o, o a\u00e7o inoxid\u00e1vel 2205 apresentar\u00e1 maior retorno el\u00e1stico do que os tipos de a\u00e7o inoxid\u00e1vel austen\u00edtico padr\u00e3o.<\/p>\n\n\n\n

A maior resist\u00eancia do a\u00e7o inoxid\u00e1vel duplex 2205 torna-o mais dif\u00edcil de usinar do que o 316L.<\/p>\n\n\n\n

A soldagem de a\u00e7o inoxid\u00e1vel 2205 duplex pode usar o m\u00e9todo de soldagem de a\u00e7o inoxid\u00e1vel 316L. No entanto, a entrada de calor e a temperatura da camada intermedi\u00e1ria devem ser estritamente controladas para manter a rela\u00e7\u00e3o austenita-ferrita desejada e evitar a precipita\u00e7\u00e3o de fases intermet\u00e1licas prejudiciais. Uma pequena quantidade de nitrog\u00eanio no g\u00e1s de soldagem ajuda a evitar esses problemas.<\/p>\n\n\n\n

Na avalia\u00e7\u00e3o do processo de soldagem do a\u00e7o inoxid\u00e1vel duplex, o m\u00e9todo comumente utilizado \u00e9 avaliar a rela\u00e7\u00e3o austenita-ferrita por meio de um testador de ferrita ou por meio de inspe\u00e7\u00e3o metalogr\u00e1fica. Em casos t\u00edpicos, o m\u00e9todo de teste ASTM A 923 \u00e9 usado para verificar a presen\u00e7a de fases intermet\u00e1licas perigosas.<\/p>\n\n\n\n

\"Soldagem
Soldagem orbital autom\u00e1tica de tubos e acess\u00f3rios de a\u00e7o inoxid\u00e1vel<\/a> (fonte da foto: ArcMachines)<\/figcaption><\/figure>\n\n\n\n

O metal de adi\u00e7\u00e3o recomendado para a solda \u00e9 ER2209 (UNS S39209, EN 1600). Somente quando a solda pode ser recozida com solu\u00e7\u00e3o s\u00f3lida para restaurar a resist\u00eancia \u00e0 corros\u00e3o ap\u00f3s a soldagem, a soldagem por autofus\u00e3o sem metal de adi\u00e7\u00e3o \u00e9 recomendada. Para o recozimento da solu\u00e7\u00e3o, aque\u00e7a a pe\u00e7a a uma temperatura de pelo menos 1900 \u00b0 F (1040 \u00b0 C) e, em seguida, resfrie-a rapidamente.<\/p>\n\n\n\n

A penetra\u00e7\u00e3o e a fluidez do a\u00e7o inoxid\u00e1vel duplex, como 2205, s\u00e3o piores do que as do a\u00e7o inoxid\u00e1vel 316L, portanto, a velocidade de soldagem \u00e9 mais lenta. Como o a\u00e7o inoxid\u00e1vel duplex 2205 tem penetra\u00e7\u00e3o pobre, \u00e9 necess\u00e1rio modificar a forma da junta. O a\u00e7o inoxid\u00e1vel duplex 2205 requer um \u00e2ngulo de chanfro mais amplo, folga de raiz maior e bordas rombas menores do que o a\u00e7o inoxid\u00e1vel 316L para obter uma solda totalmente penetrada.<\/p>\n\n\n\n

Se o equipamento de soldagem permitir o uso de fio de adi\u00e7\u00e3o, o fio de adi\u00e7\u00e3o 2209 pode ser usado para soldagem orbital de tubos de a\u00e7o inoxid\u00e1vel 2205. Tamb\u00e9m \u00e9 poss\u00edvel usar inser\u00e7\u00f5es consum\u00edveis com componentes devidamente protegidos em vez de fios de enchimento.<\/p>\n\n\n\n

A tabela a seguir resume os materiais de inser\u00e7\u00e3o usados para soldagem 2205 tubos de a\u00e7o inoxid\u00e1vel duplex<\/a>.<\/p>\n\n\n\n\n \n \n \n \n
Materiais de inser\u00e7\u00e3o<\/th>\n Liga e notas<\/th>\n <\/tr>\n
Liga de n\u00edquel cromo molibd\u00eanio<\/td>\n UNS - N06625, N10276, N06022 (PT - 2.4856, 2.4819, 2.4602)<\/td>\n <\/tr>\n
6% Mo <\/td>\n UNS - N08367, S31254, N08926 (PT - NA., 1.4547, 1.4529)<\/td>\n <\/tr>\n
Super duplex<\/td>\n UNS - S32750, S32760 (PT - 1.4410, 1.4501)<\/td>\n <\/tr>\n<\/table>\n\n\n\n

<\/p>","protected":false},"featured_media":6668,"template":"","categories":[186],"tags":[],"class_list":["post-6667","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\n2205 Duplex Processing - Stainless Steel Pipe and Fittings - KAYSUNS<\/title>\n<meta name=\"description\" content=\"The duplex 2205 processing of welding is similar to 316L stainless steel in many aspects, but there are still some important differences.\" \/>\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\/2205-processamento-duplex\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2205 Duplex Processing - Stainless Steel Pipe and Fittings - KAYSUNS\" \/>\n<meta property=\"og:description\" content=\"The duplex 2205 processing of welding is similar to 316L stainless steel in many aspects, but there are still some important differences.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/pt\/blog\/2205-processamento-duplex\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-30T08:55:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2021\/01\/Automatic-orbital-welding-of-stainless-steel-pipes-photo-source-ArcMachines.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"687\" \/>\n\t<meta property=\"og:image:height\" content=\"641\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/2205-duplex-processing\/\",\"url\":\"https:\/\/www.kaysuns.com\/blog\/2205-duplex-processing\/\",\"name\":\"2205 Duplex Processing - 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