{"id":11488,"date":"2025-12-20T12:13:28","date_gmt":"2025-12-20T04:13:28","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=11488"},"modified":"2026-04-01T14:59:44","modified_gmt":"2026-04-01T06:59:44","slug":"selection-of-tool-steel-for-thread-rolling-dies","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/selection-of-tool-steel-for-thread-rolling-dies\/","title":{"rendered":"Sele\u00e7\u00e3o de a\u00e7o ferramenta para matrizes de lamina\u00e7\u00e3o de roscas (Guia A2, D2, M2)"},"content":{"rendered":"
\n

Sele\u00e7\u00e3o de a\u00e7o ferramenta para matrizes de lamina\u00e7\u00e3o de roscas<\/h1>\n\n\n\n

A lamina\u00e7\u00e3o de roscas forma roscas por deforma\u00e7\u00e3o pl\u00e1stica, o que submete as matrizes a alta press\u00e3o de contato cont\u00ednua e carregamento repetido. O processo n\u00e3o remove material, portanto, o ac\u00famulo de tens\u00e3o na superf\u00edcie da matriz torna-se o fator dominante.<\/p>\n\n\n\n

Durante a opera\u00e7\u00e3o, as matrizes s\u00e3o expostas a tens\u00f5es de compress\u00e3o, flex\u00e3o e contato deslizante. O atrito pode gerar calor, principalmente em matrizes cil\u00edndricas, mas isso geralmente \u00e9 secund\u00e1rio. Em condi\u00e7\u00f5es de trabalho limpas, o desgaste abrasivo \u00e9 limitado. Em vez disso, a falha \u00e9 causada principalmente por fadiga, que inicia microfissuras na crista da rosca e progride para lascamento e ruptura localizada. Uma vez que a geometria da crista se degrada, a precis\u00e3o dimensional \u00e9 rapidamente perdida.<\/p>\n\n\n\n

Fatores de sele\u00e7\u00e3o<\/h2>\n\n\n\n

A sele\u00e7\u00e3o de materiais para matrizes de lamina\u00e7\u00e3o de roscas \u00e9 regida pela forma como o a\u00e7o responde a cargas repetidas em zonas de concentra\u00e7\u00e3o de tens\u00e3o, e n\u00e3o apenas pela resist\u00eancia est\u00e1tica.<\/p>\n\n\n\n

\u00c9 necess\u00e1ria alta resist\u00eancia \u00e0 compress\u00e3o para evitar deforma\u00e7\u00e3o pl\u00e1stica sob press\u00e3o radial. No entanto, a crista da rosca \u00e9 altamente sens\u00edvel ao in\u00edcio de trincas. Sem tenacidade suficiente, lascamento ou desprendimento localizado ocorrem precocemente em servi\u00e7o.<\/p>\n\n\n\n

A resist\u00eancia \u00e0 fadiga determina a vida \u00fatil. Materiais que resistem ao in\u00edcio de trincas e retardam sua propaga\u00e7\u00e3o mant\u00eam a integridade do chip por ciclos de produ\u00e7\u00e3o mais longos.<\/p>\n\n\n\n

O equil\u00edbrio reside entre tenacidade e resist\u00eancia ao desgaste. Para ciclos curtos ou inst\u00e1veis, maior tenacidade reduz o risco de falhas prematuras. Para produ\u00e7\u00e3o est\u00e1vel e de longo prazo, maior teor de liga e volume de carbonetos melhoram a reten\u00e7\u00e3o dimensional, mesmo que isso implique menor tenacidade.<\/p>\n\n\n\n

A\u00e7os para ferramentas recomendados<\/h2>\n\n\n\n

Em aplica\u00e7\u00f5es industriais, as seguintes classes de a\u00e7o s\u00e3o comumente utilizadas para matrizes de lamina\u00e7\u00e3o de roscas planas e circulares, dependendo das condi\u00e7\u00f5es de produ\u00e7\u00e3o e dos requisitos de estabilidade.<\/p>\n\n\n\n

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A\u00e7o ferramenta AISI A2 | 1.2363 | SKD12<\/h3>\n\n\n\n

O a\u00e7o A2 oferece uma combina\u00e7\u00e3o equilibrada de tenacidade e resist\u00eancia ao desgaste, tornando-o adequado tanto para matrizes planas quanto cil\u00edndricas. Sua maior tenacidade ajuda a proteger a crista da rosca contra lascamento sob cargas repetidas.<\/p>\n\n\n\n

Al\u00e9m disso, oferece boa estabilidade dimensional durante o tratamento t\u00e9rmico, o que \u00e9 importante para matrizes que requerem retifica\u00e7\u00e3o p\u00f3s-endurecimento. Em aplica\u00e7\u00f5es onde o alinhamento, a lubrifica\u00e7\u00e3o ou as condi\u00e7\u00f5es de carga n\u00e3o s\u00e3o totalmente est\u00e1veis, o A2 proporciona uma margem de seguran\u00e7a maior.<\/p>\n\n\n\n

Sua limita\u00e7\u00e3o reside na resist\u00eancia ao desgaste. Em longos per\u00edodos de produ\u00e7\u00e3o, um menor teor de carbonetos leva a uma degrada\u00e7\u00e3o mais r\u00e1pida do perfil do que em ligas de maior teor.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes de fornecimento de material A2.<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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A\u00e7o ferramenta AISI D2 |1.2379 | SKD11<\/h3>\n\n\n\n

O a\u00e7o D2 \u00e9 selecionado quando a estabilidade dimensional e a resist\u00eancia ao desgaste s\u00e3o os principais requisitos. Seu alto teor de carbono e cromo produz um grande volume de carbonetos duros, o que melhora significativamente a resist\u00eancia \u00e0 degrada\u00e7\u00e3o superficial.<\/p>\n\n\n\n

Em produ\u00e7\u00f5es de longa dura\u00e7\u00e3o, o D2 mant\u00e9m a precis\u00e3o do perfil da rosca e prolonga a vida \u00fatil da matriz. Isso o torna eficaz em processos est\u00e1veis com carregamento consistente.<\/p>\n\n\n\n

No entanto, sua baixa tenacidade o torna mais suscet\u00edvel a lascamento. Em condi\u00e7\u00f5es que envolvem desalinhamento, vibra\u00e7\u00e3o ou impacto, a falha da crista pode ocorrer prematuramente. Portanto, o perfil D2 deve ser aplicado onde a estabilidade do processo \u00e9 bem controlada.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes de fornecimento de materiais D2<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
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A\u00e7o ferramenta AISI M2 | 1.3343 | SKH51<\/h3>\n\n\n\n

O a\u00e7o M2 \u00e9 utilizado quando se exige m\u00e1xima vida \u00fatil da matriz em condi\u00e7\u00f5es de produ\u00e7\u00e3o exigentes. Ele combina boa resist\u00eancia ao desgaste com alta dureza a quente, permitindo que mantenha sua resist\u00eancia mesmo quando o atrito gera temperaturas elevadas.<\/p>\n\n\n\n

Em compara\u00e7\u00e3o com os a\u00e7os para trabalho a frio, o M2 resiste ao amolecimento e mant\u00e9m a estabilidade do fio de corte em ciclos prolongados. Normalmente, ele \u00e9 temperado a n\u00edveis mais elevados, o que melhora a resist\u00eancia ao desgaste, enquanto o revenimento controlado mant\u00e9m a tenacidade necess\u00e1ria para o uso.<\/p>\n\n\n\n

Isso torna o M2 adequado para longas s\u00e9ries de produ\u00e7\u00e3o, onde tanto a carga mec\u00e2nica quanto os efeitos t\u00e9rmicos devem ser considerados.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes de fornecimento de material M2.<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n

Tabela Resumo<\/h2>\n\n\n\n
A\u00e7o ferramenta de alta qualidade<\/td>Propriedades principais \/ Dureza<\/td>Uma maior resist\u00eancia reduz o risco de lascamento da crista em condi\u00e7\u00f5es inst\u00e1veis.<\/td><\/tr>
A2<\/td>56\u201358 HRC, equil\u00edbrio entre tenacidade e resist\u00eancia ao desgaste.<\/td>~64 HRC, alta resist\u00eancia ao desgaste e dureza a quente.<\/td><\/tr>
D2<\/td>56\u201358 HRC, resist\u00eancia ao desgaste muito alta, baixa tenacidade<\/td>Mant\u00e9m a precis\u00e3o do perfil em produ\u00e7\u00e3o est\u00e1vel e de longo prazo.<\/td><\/tr>
M2<\/td>60\u201365 HRC, forte estabilidade de borda e resist\u00eancia t\u00e9rmica<\/td>Vida \u00fatil m\u00e1xima da matriz sob carga mec\u00e2nica e t\u00e9rmica combinada.<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Selection of Tool Steel for Thread Rolling Dies Thread rolling forms threads by plastic deformation, which subjects the dies to continuous high contact pressure and repeated loading. The process does not remove material, so stress accumulation at the die surface becomes the dominant factor. During operation, dies are exposed to compressive stress, bending, and sliding […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"disabled","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-11488","page","type-page","status-publish","hentry"],"yoast_head":"\nTool Steel Selection for Thread Rolling Dies (A2, D2, M2 Guide)<\/title>\n<meta name=\"description\" content=\"Learn how to select tool steel for thread rolling dies based on fatigue, toughness, and wear resistance. Compare A2, D2, and M2 for different production conditions.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/pt\/selection-of-tool-steel-for-thread-rolling-dies\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Selection of Tool Steel for Thread Rolling Dies(A2, D2, M2 Guide)\" \/>\n<meta property=\"og:description\" content=\"Learn how to select tool steel for thread rolling dies based on fatigue, toughness, and wear resistance. 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The process does not remove material, so stress accumulation at the die surface becomes the dominant factor. During operation, dies are exposed to compressive stress, bending, and sliding…","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/pt\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Selection of Tool Steel for Thread Rolling Dies Thread rolling forms threads by plastic deformation, which subjects the dies to continuous high contact pressure and repeated loading. The process does not remove material, so stress accumulation at the die surface becomes the dominant factor. 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