{"id":4811,"date":"2024-10-10T14:04:38","date_gmt":"2024-10-10T06:04:38","guid":{"rendered":"https:\/\/uniasen.com\/?p=4811"},"modified":"2024-10-10T14:04:38","modified_gmt":"2024-10-10T06:04:38","slug":"seamless-steel-pipe-manufacturing-process","status":"publish","type":"post","link":"https:\/\/uniasen.com\/pt\/blog\/processo-de-fabricacao-de-tubos-de-aco-sem-costura\/","title":{"rendered":"Processo de fabrica\u00e7\u00e3o de tubos de a\u00e7o sem costura"},"content":{"rendered":"

\"Fabrica\u00e7\u00e3o<\/h2>\n

Introdu\u00e7\u00e3o<\/span><\/h2>\n

Os tubos de a\u00e7o s\u00e3o uma necessidade em quase todos os setores. Eles s\u00e3o essenciais para acelerar o trabalho industrial e tornar os processos mais eficientes.<\/span><\/p>\n

Entre os v\u00e1rios tubos de a\u00e7o, os tubos sem costura s\u00e3o um dos mais procurados. Devido \u00e0s suas propriedades mec\u00e2nicas, eles oferecem maior durabilidade do que os tubos soldados. Como s\u00e3o provenientes de um tarugo de metal s\u00f3lido, s\u00e3o mais resistentes ao estresse e \u00e0 quebra. Geralmente s\u00e3o necess\u00e1rios em aplica\u00e7\u00f5es de alta precis\u00e3o e alta press\u00e3o.<\/span><\/p>\n

Continue lendo este blog para saber mais sobre tubos sem costura e como eles s\u00e3o fabricados.<\/p>\n

<\/h2>\n

O que \u00e9 um tubo sem costura?<\/span><\/h2>\n

Os tubos sem costura s\u00e3o uma variante de tubo de a\u00e7o fabricado sem nenhuma junta soldada, da\u00ed o seu nome. A aus\u00eancia de juntas reduz os riscos de quebra sob press\u00e3o e estresse intensos. Ao contr\u00e1rio dos tubos soldados, eles oferecem superf\u00edcies mais lisas e di\u00e2metros uniformes.<\/span><\/p>\n

Essas propriedades permitem que eles tenham durabilidade superior e resist\u00eancia \u00e0 corros\u00e3o. Todas essas caracter\u00edsticas not\u00e1veis os tornam ideais para o setor de petr\u00f3leo e g\u00e1s e para a constru\u00e7\u00e3o.<\/span><\/p>\n

<\/h2>\n

Hist\u00f3rico de desenvolvimento de tubos sem costura<\/h2>\n

A hist\u00f3ria dos tubos sem costura pode ser rastreada at\u00e9 o final do s\u00e9culo XIX. Com o avan\u00e7o da industrializa\u00e7\u00e3o, v\u00e1rios processos de fabrica\u00e7\u00e3o foram desenvolvidos gradualmente. Em 1885, os irm\u00e3os Mannesmann inventaram uma m\u00e1quina. Ela fazia furos em rolos. Isso permitiu que o a\u00e7o fosse transformado em tubos sem solda. Essa inven\u00e7\u00e3o levou a melhores processos de lamina\u00e7\u00e3o em 1891. Isso marcou uma nova etapa na fabrica\u00e7\u00e3o de tubos sem costura.<\/p>\n

Em 1903, Ritteriefel, da Su\u00ed\u00e7a, inventou a m\u00e1quina autom\u00e1tica de lamina\u00e7\u00e3o de tubos, que melhorou ainda mais a efici\u00eancia da produ\u00e7\u00e3o. Com o advento dos equipamentos de extens\u00e3o, o moderno setor de tubos de a\u00e7o sem costura tomou forma. Isso se deveu aos laminadores de tubos cont\u00ednuos e \u00e0s m\u00e1quinas de eleva\u00e7\u00e3o de tubos.<\/p>\n

Em 1930, a introdu\u00e7\u00e3o de moinhos de tr\u00eas rolos, extrusoras e laminadores a frio promoveu o avan\u00e7o da tecnologia de fabrica\u00e7\u00e3o de tubos sem costura. Em meados do s\u00e9culo XX, as m\u00e1quinas de al\u00edvio de tens\u00e3o e os espa\u00e7os em branco de fundi\u00e7\u00e3o cont\u00ednua melhoraram a efici\u00eancia. Isso tornou os tubos sem costura mais competitivos do que os soldados.<\/p>\n

Na d\u00e9cada de 1970, as vendas de tubos com e sem costura eram basicamente as mesmas. Os tubos sem costura n\u00e3o t\u00eam soldas e resistem a altas press\u00f5es. Eles s\u00e3o amplamente utilizados em campos de alta resist\u00eancia. Sua demanda cresce mais de 5% por ano. Eles est\u00e3o se tornando um produto essencial no mercado global de tubos de a\u00e7o.<\/p>\n

<\/h2>\n

Como \u00e9 feito um tubo de a\u00e7o sem costura?<\/b><\/h2>\n

A fabrica\u00e7\u00e3o de tubos sem costura come\u00e7a com um tarugo de a\u00e7o s\u00f3lido. Esse peda\u00e7o de metal passa por um processo de aquecimento para atingir a maleabilidade e a temperatura ideais. Em seguida, os trabalhadores o perfuram e esticam, transformando-o em um tubo oco.<\/span><\/p>\n

Esse tubo continua a passar por um processo de alongamento e lamina\u00e7\u00e3o para reduzir seu di\u00e2metro. Durante esse processo, os trabalhadores inserem um mandril para medir o di\u00e2metro interno do tubo. Uma s\u00e9rie de tratamentos t\u00e9rmicos \u00e9 realizada para obter as propriedades mec\u00e2nicas do tubo.<\/span><\/p>\n

Depois de atingir o di\u00e2metro e o comprimento desejados, o tubo \u00e9 resfriado. Os toques finais incluem p\u00f3s-tratamento, como polimento e revestimento da superf\u00edcie. Por fim, a m\u00e1quina corta o tubo sem costura no comprimento desejado.<\/span><\/p>\n

Sele\u00e7\u00e3o de mat\u00e9ria-prima<\/span><\/h3>\n

Os tubos sem costura s\u00e3o uma op\u00e7\u00e3o dur\u00e1vel para v\u00e1rias aplica\u00e7\u00f5es. Entretanto, para maximizar sua versatilidade, diferentes materiais devem estar dispon\u00edveis para processamento. A sele\u00e7\u00e3o das mat\u00e9rias-primas \u00e9 fundamental para obter as propriedades ideais do tubo, incluindo resist\u00eancia \u00e0 tra\u00e7\u00e3o, resist\u00eancia ao escoamento e dureza.<\/span><\/p>\n

Aqui est\u00e3o os materiais mais comuns para a fabrica\u00e7\u00e3o de tubos sem costura:<\/span><\/p>\n

A\u00e7o carbono<\/b>: Comum para tubos de uso geral, oferecendo boa resist\u00eancia e soldabilidade. Adequado para aplica\u00e7\u00f5es de baixa press\u00e3o, como \u00e1gua, g\u00e1s e sistemas de baixa temperatura.<\/span><\/p>\n

A\u00e7o-liga<\/b>: Composto por elementos de liga como cromo, n\u00edquel e molibd\u00eanio. Essa composi\u00e7\u00e3o proporciona maior for\u00e7a, tenacidade e resist\u00eancia ao calor e \u00e0 corros\u00e3o.<\/span><\/p>\n

A\u00e7o inoxid\u00e1vel<\/b>: Garante resist\u00eancia \u00e0 corros\u00e3o e tenacidade excepcionais. Geralmente, \u00e9 \u00fatil em ambientes corrosivos, como processamento mar\u00edtimo e qu\u00edmico.<\/span><\/p>\n

\"como<\/h2>\n

Etapas de fabrica\u00e7\u00e3o em detalhes<\/span><\/h2>\n

Aqui est\u00e1 um guia mais detalhado sobre a fabrica\u00e7\u00e3o de tubos sem costura.<\/span><\/p>\n

Aquecimento<\/span><\/h2>\n

Todo o processo de fabrica\u00e7\u00e3o come\u00e7a com o primeiro processo de aquecimento. Antes de poder amassar o tarugo de a\u00e7o maci\u00e7o, voc\u00ea ter\u00e1 de pass\u00e1-lo por um forno a cerca de 1.200\u00b0Celsius. Essa temperatura extrema amolece o a\u00e7o sem derret\u00ea-lo. O que sai do forno \u00e9 um a\u00e7o quente e incandescente que \u00e9 male\u00e1vel o suficiente para as pr\u00f3ximas etapas.<\/span><\/p>\n

Extrus\u00e3o<\/span><\/h3>\n

Ferramentas rotativas industriais perfuram o tarugo em chamas para criar uma carca\u00e7a oca. O processo de alongamento passa a casca por uma s\u00e9rie de rolos resistentes. Isso cria a forma e o tamanho iniciais do tubo para o trabalho.<\/span><\/p>\n

Expans\u00e3o do furo<\/span><\/h3>\n

Ao expandir o tubo oco, os trabalhadores continuar\u00e3o for\u00e7ando um mandril nele. Essa etapa \u00e9 fundamental para garantir um di\u00e2metro interno suave e uma espessura de parede uniforme. O fresamento com mandril envolve a lamina\u00e7\u00e3o e o estiramento cont\u00ednuos at\u00e9 as dimens\u00f5es desejadas.<\/span><\/p>\n

Resfriamento<\/span><\/h3>\n

Depois de obter o tamanho e as dimens\u00f5es ideais, o tubo \u00e9 resfriado gradualmente. Esse processo de resfriamento ocorre em um ambiente controlado para evitar o estresse t\u00e9rmico. Ele tamb\u00e9m ajuda a manter as propriedades mec\u00e2nicas integrais do tubo. O resfriamento completo do tubo marca a solidifica\u00e7\u00e3o do tubo em seu di\u00e2metro final.<\/span><\/p>\n

Alisamento<\/span><\/h3>\n

As etapas anteriores n\u00e3o garantem sucesso total na fabrica\u00e7\u00e3o de um tubo perfeito. Mesmo ap\u00f3s o resfriamento, haver\u00e1 distor\u00e7\u00f5es e curvas. Por isso, os tubos ainda precisam passar por uma m\u00e1quina de endireitamento. Os rolos ou uma m\u00e1quina de endireitamento aplicam press\u00e3o controlada para alinhar o tubo. Isso garante que o produto final seja geometricamente preciso e utiliz\u00e1vel.<\/span><\/p>\n

P\u00f3s-processamento<\/span><\/h3>\n

O p\u00f3s-processamento pode incluir polimento da superf\u00edcie, rosqueamento ou tratamento t\u00e9rmico para melhorar as propriedades. Os trabalhadores tamb\u00e9m podem adicionar um revestimento de superf\u00edcie para proteger contra abras\u00e3o e corros\u00e3o. Essa etapa garante que o tubo atenda a padr\u00f5es espec\u00edficos de aplica\u00e7\u00e3o.<\/span><\/p>\n

Controle de qualidade<\/span><\/h3>\n

O controle de qualidade verifica a precis\u00e3o dimensional, a resist\u00eancia e os defeitos de superf\u00edcie do tubo. Mecanismos de teste seguros, incluindo inspe\u00e7\u00f5es por raios X e ultrassom, garantem tubos sem defeitos. O tubo passa por uma inspe\u00e7\u00e3o final antes do embarque.<\/span><\/p>\n

<\/h2>\n

Compara\u00e7\u00e3o de processos<\/span><\/h2>\n\n\n\n\n\n\n\n\n
Propriedade<\/b><\/td>\nTubo sem costura laminado a quente<\/b><\/td>\nTubo sem costura laminado a frio<\/b><\/td>\n<\/tr>\n
Temperatura de fabrica\u00e7\u00e3o<\/b><\/td>\nProduzido em altas temperaturas (>1.000\u00b0C)<\/td>\nProduzido em temperatura ambiente ou ligeiramente elevado<\/td>\n<\/tr>\n
Acabamento da superf\u00edcie<\/b><\/td>\n\u00c1spero, pode ter escamas<\/td>\nSuperf\u00edcie lisa e limpa, com oxida\u00e7\u00e3o m\u00ednima<\/td>\n<\/tr>\n
For\u00e7a<\/b><\/td>\nMenor resist\u00eancia \u00e0 tra\u00e7\u00e3o e dureza<\/td>\nMaior resist\u00eancia \u00e0 tra\u00e7\u00e3o, dimens\u00f5es mais precisas<\/td>\n<\/tr>\n
Custo<\/b><\/td>\nMenos caro<\/td>\nMais caro devido ao processamento adicional<\/td>\n<\/tr>\n
Aplicativos<\/b><\/td>\nUsos pesados e de baixa precis\u00e3o<\/td>\nEngenharia de precis\u00e3o, automotiva, aeroespacial, vasos de press\u00e3o<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Al\u00e9m do tubo sem costura laminado a quente, h\u00e1 tamb\u00e9m um tipo chamado de tubo sem costura estirado a frio. Ambos oferecem propriedades distintas necess\u00e1rias para diferentes aplica\u00e7\u00f5es. Veja a seguir uma an\u00e1lise mais detalhada de como esses dois tipos variam em termos de processo.<\/span><\/p>\n

Tubo sem costura laminado a quente<\/span><\/h3>\n

O ponto principal do tubo laminado a quente \u00e9 que o tarugo \u00e9 aquecido a cerca de mil graus Celsius ou um pouco mais. Todo o processo se concentra em moldar o tubo enquanto ele est\u00e1 quente.<\/span><\/p>\n

Esse processo cria um tubo que \u00e9 melhor do que um tubo soldado na maioria dos aspectos. No entanto, o tubo sem costura laminado a quente continua sendo inferior ao tipo sem costura estirado a frio. Ele tem um acabamento superficial mais \u00e1spero devido \u00e0 oxida\u00e7\u00e3o e tamb\u00e9m oferece menor resist\u00eancia \u00e0 tra\u00e7\u00e3o.<\/span><\/p>\n

Embora seja mais econ\u00f4mico e possa suportar a aplica\u00e7\u00e3o geral de tubos sem costura.<\/span><\/p>\n

Tubo sem costura estirado a frio<\/span><\/h3>\n

Os tubos sem costura estirados a frio s\u00e3o a op\u00e7\u00e3o ideal se voc\u00ea estiver procurando uma op\u00e7\u00e3o melhor do que os tubos laminados a quente. O processo envolve trabalhar em um tubo laminado a quente em temperatura ambiente. A partir da\u00ed, o tubo passa por uma s\u00e9rie de processos de estiramento ou de trefila\u00e7\u00e3o a frio. O trabalho no tubo durante o resfriamento gradual garante maior resist\u00eancia \u00e0 tra\u00e7\u00e3o. Ele tamb\u00e9m tem uma superf\u00edcie mais refinada e mais lisa.<\/span><\/p>\n

No entanto, os tubos sem costura estirados a frio s\u00e3o mais caros do que os laminados a quente. Eles tamb\u00e9m s\u00e3o mais exclusivos para aplica\u00e7\u00f5es de alta precis\u00e3o. Isso inclui sistemas hidr\u00e1ulicos, fabrica\u00e7\u00e3o automotiva e vasos de press\u00e3o.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

O processo de fabrica\u00e7\u00e3o de tubos de a\u00e7o sem costura envolve o aquecimento de tarugos de a\u00e7o de alta qualidade a cerca de 1.300\u00b0C (2.370\u00b0F) e sua perfura\u00e7\u00e3o com um mandril para formar um tubo oco. S\u00e3o usados dois m\u00e9todos principais: a t\u00e9cnica de lamina\u00e7\u00e3o cruzada da Mannesmann e a extrus\u00e3o. Esses processos produzem tubos dur\u00e1veis e sem emendas, amplamente utilizados em setores que exigem alta resist\u00eancia e confiabilidade.<\/p>","protected":false},"author":10,"featured_media":4833,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4811","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nSeamless Steel Pipe Manufacturing Process - UNIASEN<\/title>\n<meta name=\"description\" content=\"The seamless steel pipe manufacturing process starts with selecting high-quality steel billets, which are heated to about 2,370\u00b0F (1,300\u00b0C). A mandrel is then inserted, and the heated billet is pierced to create a hollow tube. This process utilizes two main methods: the Mannesmann cross-rolling technique and extrusion, both of which produce strong, seam-free pipes suitable for various industrial applications.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uniasen.com\/pt\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Seamless Steel Pipe Manufacturing Process - UNIASEN\" \/>\n<meta property=\"og:description\" content=\"The seamless steel pipe manufacturing process starts with selecting high-quality steel billets, which are heated to about 2,370\u00b0F (1,300\u00b0C). A mandrel is then inserted, and the heated billet is pierced to create a hollow tube. This process utilizes two main methods: the Mannesmann cross-rolling technique and extrusion, both of which produce strong, seam-free pipes suitable for various industrial applications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uniasen.com\/pt\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\" \/>\n<meta property=\"og:site_name\" content=\"UNIASEN\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-10T06:04:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/10\/Seamless_Steel_Pipe_Manufacturing_Process_UNIASEN.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"750\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Fiona\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fiona\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\"},\"author\":{\"name\":\"Fiona\",\"@id\":\"https:\/\/uniasen.com\/#\/schema\/person\/10cd4f9f6400879e795a1a9e3f1d5f13\"},\"headline\":\"Seamless Steel Pipe Manufacturing Process\",\"datePublished\":\"2024-10-10T06:04:38+00:00\",\"dateModified\":\"2024-10-10T06:04:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\"},\"wordCount\":1217,\"publisher\":{\"@id\":\"https:\/\/uniasen.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/10\/Seamless_Steel_Pipe_Manufacturing_Process_UNIASEN.webp\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"pt-BR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\",\"url\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/\",\"name\":\"Seamless Steel Pipe Manufacturing Process - UNIASEN\",\"isPartOf\":{\"@id\":\"https:\/\/uniasen.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/uniasen.com\/ko\/blog\/\uc774\uc74c\ub9e4-\uc5c6\ub294-\uac15\uad00-\uc81c\uc870-\uacf5\uc815\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/uniasen.com\/wp-content\/uploads\/2024\/10\/Seamless_Steel_Pipe_Manufacturing_Process_UNIASEN.webp\",\"datePublished\":\"2024-10-10T06:04:38+00:00\",\"dateModified\":\"2024-10-10T06:04:38+00:00\",\"description\":\"The seamless steel pipe manufacturing process starts with selecting high-quality steel billets, which are heated to about 2,370\u00b0F (1,300\u00b0C). 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