{"id":6573,"date":"2020-12-17T07:15:32","date_gmt":"2020-12-17T07:15:32","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=6573"},"modified":"2025-06-19T06:44:21","modified_gmt":"2025-06-19T06:44:21","slug":"onde-o-aco-inoxidavel-duplex-pode-ser-usado","status":"publish","type":"blog","link":"https:\/\/www.kaysuns.com\/pt\/blog\/onde-o-aco-inoxidavel-duplex-pode-ser-usado\/","title":{"rendered":"Onde o a\u00e7o inoxid\u00e1vel duplex pode ser usado?"},"content":{"rendered":"

O que s\u00e3o aplica\u00e7\u00f5es de a\u00e7o inoxid\u00e1vel duplex?<\/strong><\/h2>\n\n\n\n

O a\u00e7o inoxid\u00e1vel duplex \u00e9 um a\u00e7o inoxid\u00e1vel no qual as fases de ferrita e austenita na estrutura da solu\u00e7\u00e3o s\u00f3lida representam, cada uma, cerca de 50%. Ele n\u00e3o s\u00f3 tem boa tenacidade, alta resist\u00eancia e excelente resist\u00eancia \u00e0 corros\u00e3o por cloreto, mas tamb\u00e9m resist\u00eancia \u00e0 corros\u00e3o por pite e corros\u00e3o intergranular<\/a>especialmente a resist\u00eancia \u00e0 corros\u00e3o sob tens\u00e3o em ambiente de cloreto. Muitas pessoas n\u00e3o sabem que as aplica\u00e7\u00f5es do a\u00e7o inoxid\u00e1vel duplex n\u00e3o s\u00e3o menores do que as dos a\u00e7os austen\u00edticos.<\/p>\n\n\n\n

Aplica\u00e7\u00e3o de a\u00e7o inoxid\u00e1vel duplex em engenharia naval - Constru\u00e7\u00e3o costeira e pontes<\/strong><\/h3>\n\n\n\n

Os edif\u00edcios costeiros enfrentam condi\u00e7\u00f5es naturais de alta umidade e alto teor de sal. Para o novo Aeroporto Internacional de Doha, no Catar, pa\u00eds do Golfo P\u00e9rsico, ele tamb\u00e9m ser\u00e1 afetado por fortes raios ultravioleta, altas temperaturas e abras\u00e3o.<\/p>\n\n\n

\n
\"Aeroporto
Aeroporto Internacional de Doha Hamad em telhado duplex de a\u00e7o inoxid\u00e1vel<\/figcaption><\/figure>\n<\/div>\n\n\n

Os materiais de constru\u00e7\u00e3o tradicionais t\u00eam resist\u00eancia insuficiente \u00e0 corros\u00e3o por pite. O partido da constru\u00e7\u00e3o sugeriu inicialmente o uso de ligas de tit\u00e2nio para construir telhados de aeroportos. No entanto, devido \u00e0 dificuldade e ao alto custo de constru\u00e7\u00e3o, eles tiveram que abandonar o uso desse material e, em vez disso, considerar o uso de dur\u00e1veis e com maior custo de ciclo de vida. Vantajoso a\u00e7o inoxid\u00e1vel duplex.<\/p>\n\n\n\n

No final, as pessoas escolheram o a\u00e7o inoxid\u00e1vel duplex econ\u00f4mico ATI 2003. Mais de 1.500 toneladas de chapas de a\u00e7o inoxid\u00e1vel duplex foram tratadas com uma superf\u00edcie fosca para construir o maior telhado de a\u00e7o inoxid\u00e1vel em forma de onda do mundo.<\/p>\n\n\n\n

A ponte Stonecutters em Hong Kong, China, tem uma vida \u00fatil projetada de 120 anos e n\u00e3o requer manuten\u00e7\u00e3o. Esta ponte de via expressa cruzada conectando Hong Kong e Shenzhen usou cerca de 2.000 toneladas de placas de a\u00e7o duplex 2205 para fazer a estrutura da superf\u00edcie externa da parte superior do poste, e cerca de 1.250 toneladas de 2205 e 316 foram usadas como barras de a\u00e7o para rodovias. A ponte Hong Kong-Zhuhai-Macao, a ponte mar\u00edtima mais longa do mundo, que foi conclu\u00edda em outubro do ano passado, utilizou 8.200 toneladas de duplex barras de a\u00e7o inoxid\u00e1vel<\/a>que s\u00e3o utilizados principalmente na plataforma, torre e cais da ponte.<\/p>\n\n\n\n

\n
\"Ponte
o\u00a0Hong Kong<\/em>-Zhuhai<\/em>\u2013Macau\u00a0Ponte<\/em>\u00a0(HZMB)<\/figcaption><\/figure>\n\n\n\n
\"Stonecutters
Stonecutters Bridge<\/figcaption><\/figure>\n<\/figure>\n\n\n\n

Gra\u00e7as \u00e0 boa tenacidade do a\u00e7o inoxid\u00e1vel duplex, o econ\u00f4mico UNS 32304 foi usado para construir edif\u00edcios resistentes ao vento e ao fogo em plataformas offshore.<\/p>\n\n\n\n

\n\n\n\n

Extra\u00e7\u00e3o de \u00f3leo e g\u00e1s<\/strong><\/h3>\n\n\n\n

Na produ\u00e7\u00e3o de petr\u00f3leo e g\u00e1s, o a\u00e7o inoxid\u00e1vel duplex \u00e9 usado principalmente em dutos de produ\u00e7\u00e3o de fundo de po\u00e7o, dispositivos de inje\u00e7\u00e3o para po\u00e7os de g\u00e1s de campo de petr\u00f3leo, separadores centr\u00edfugos offshore, sistemas submarinos de oleoduto e g\u00e1s, trocadores de calor e sistemas operacionais de superf\u00edcie, etc. \u00c9 especialmente adequado para aplica\u00e7\u00f5es contendo Cl, CO2, H2S em ambiente \u00e1cido sem inibidor de corros\u00e3o.<\/p>\n\n\n\n

2.500 toneladas de a\u00e7o inoxid\u00e1vel duplex UR45N foram usadas no projeto Statoil noruegu\u00eas para reduzir o peso do equipamento; O a\u00e7o inoxid\u00e1vel super duplex UR52N foi usado no projeto de campo de petr\u00f3leo do Mar do Norte, no Reino Unido, para a fabrica\u00e7\u00e3o de coletores e dutos de petr\u00f3leo e g\u00e1s; po\u00e7os de petr\u00f3leo e g\u00e1s no Alasca, Golfo do M\u00e9xico e outros lugares nos Estados Unidos O a\u00e7o inoxid\u00e1vel super duplex SAF2507 \u00e9 usado na produ\u00e7\u00e3o, em instala\u00e7\u00f5es de plataforma de produ\u00e7\u00e3o de petr\u00f3leo offshore e em oleodutos e gasodutos.<\/p>\n\n\n

\n
\"Plataforma
Noruega Plataforma offshore da Statoil<\/figcaption><\/figure>\n<\/div>\n\n\n

Al\u00e9m disso, gra\u00e7as \u00e0 adi\u00e7\u00e3o de cobre para melhorar ainda mais a resist\u00eancia e a resist\u00eancia \u00e0 corros\u00e3o, o a\u00e7o inoxid\u00e1vel duplex Ferralium225-SD50 tem sido usado para fabricar equipamentos submarinos de 7000 m de profundidade e cont\u00eaineres de cabos, bem como localizadores submarinos e ac\u00fastica control\u00e1vel em alto mar. Solte o compartimento de press\u00e3o e as pe\u00e7as de suporte de carga do transponder.<\/p>\n\n\n\n

\n\n\n\n

Dessaliniza\u00e7\u00e3o<\/strong><\/h3>\n\n\n\n

Devido \u00e0 alta concentra\u00e7\u00e3o de \u00edons cloreto da \u00e1gua do mar, o equipamento e as tubula\u00e7\u00f5es do sistema de dessaliniza\u00e7\u00e3o da \u00e1gua do mar enfrentar\u00e3o corros\u00e3o severa. O a\u00e7o inoxid\u00e1vel austen\u00edtico tradicional costuma sofrer danos de corros\u00e3o local, como corros\u00e3o por pite, corros\u00e3o em fendas e corros\u00e3o sob tens\u00e3o.<\/p>\n\n\n\n

O a\u00e7o inoxid\u00e1vel duplex tem um bom desempenho nos tipos de corros\u00e3o mencionados acima e se torna um dos principais materiais. Entre eles, o tubo condensador do evaporador no m\u00e9todo de dessaliniza\u00e7\u00e3o flash de \u00e1gua do mar em v\u00e1rios est\u00e1gios usa principalmente tubo de a\u00e7o inoxid\u00e1vel super duplex 2507 em vez de tit\u00e2nio ou liga de cobre-n\u00edquel. O escudo da c\u00e2mara de flash pode usar Tubos de a\u00e7o inoxid\u00e1vel 2205 duplex<\/a> por fabricantes de acess\u00f3rios para tubos de a\u00e7o inoxid\u00e1vel<\/a>. Este \u00faltimo foi adotado pela usina de dessaliniza\u00e7\u00e3o da L\u00edbia. A tubula\u00e7\u00e3o de alta press\u00e3o do m\u00e9todo de osmose reversa e a bomba de alta press\u00e3o do ambiente de alto cloreto usam a\u00e7o 2507, que \u00e9 compar\u00e1vel ao a\u00e7o inoxid\u00e1vel superausten\u00edtico contendo 6Mo, e foi usado na nova planta de Ashkelon em Israel .<\/p>\n\n\n\n

O projeto de dessaliniza\u00e7\u00e3o Caofeidian da China utiliza 300 toneladas de chapas de a\u00e7o 2205 para fabricar equipamentos de evapora\u00e7\u00e3o flash multi-est\u00e1gio.<\/p>\n\n\n

\n
\"Caofeidian-Desalination-Project-China\"
Projeto de dessaliniza\u00e7\u00e3o de Caofeidian, China<\/figcaption><\/figure>\n<\/div>","protected":false},"featured_media":6579,"template":"","categories":[186],"tags":[],"class_list":["post-6573","blog","type-blog","status-publish","has-post-thumbnail","hentry","category-stainless-steel-knowledge"],"yoast_head":"\nWhat are duplex stainless steel applications? - SS Pipe and Fittings<\/title>\n<meta name=\"description\" content=\"Many people do not know that the duplex stainless steel applications in daily life is not less than that of austenitic steel\" \/>\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\/onde-o-aco-inoxidavel-duplex-pode-ser-usado\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are duplex stainless steel applications? - SS Pipe and Fittings\" \/>\n<meta property=\"og:description\" content=\"Many people do not know that the duplex stainless steel applications in daily life is not less than that of austenitic steel\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/pt\/blog\/onde-o-aco-inoxidavel-duplex-pode-ser-usado\/\" \/>\n<meta property=\"og:site_name\" content=\"Stainless Steel Pipe and Fittings | KAYSUNS\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-19T06:44:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kaysuns.com\/wp-content\/uploads\/2020\/12\/Caofeidian-Desalination-Project-China.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"587\" \/>\n\t<meta property=\"og:image:height\" content=\"407\" \/>\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=\"5 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.kaysuns.com\/blog\/where-can-duplex-stainless-steel-be-used\/\",\"url\":\"https:\/\/www.kaysuns.com\/blog\/where-can-duplex-stainless-steel-be-used\/\",\"name\":\"What are duplex stainless steel applications? 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