{"id":12005,"date":"2026-01-07T13:15:19","date_gmt":"2026-01-07T05:15:19","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12005"},"modified":"2026-04-02T15:02:08","modified_gmt":"2026-04-02T07:02:08","slug":"selection-of-tool-steel-for-fine-blanking-dies","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/selection-of-tool-steel-for-fine-blanking-dies\/","title":{"rendered":"Sele\u00e7\u00e3o de a\u00e7os para corte fino | Guia D2, A2, S7 | Aobo Steel"},"content":{"rendered":"
\n

Sele\u00e7\u00e3o de a\u00e7o ferramenta para matrizes de estampagem fina<\/h1>\n\n\n\n

O corte fino \u00e9 um processo de conforma\u00e7\u00e3o a frio de precis\u00e3o projetado para produzir bordas totalmente cortadas com zonas de fratura m\u00ednimas. Ao aplicar um indentador em forma de anel em V, o material \u00e9 submetido a alta tens\u00e3o compressiva antes do corte, promovendo assim o fluxo pl\u00e1stico em vez da propaga\u00e7\u00e3o de trincas.<\/p>\n\n\n\n

Em compara\u00e7\u00e3o com o corte convencional, isso resulta em uma press\u00e3o de contato significativamente maior, folgas mais apertadas (tipicamente em torno de 1% da espessura da chapa) e atrito severo na interface de corte. Ao mesmo tempo, os pun\u00e7\u00f5es devem suportar fortes for\u00e7as de desprendimento e eje\u00e7\u00e3o.<\/p>\n\n\n\n

Nessas condi\u00e7\u00f5es, a falha da ferramenta \u00e9 causada principalmente por desgaste abrasivo, desgaste adesivo (gripagem) e lascamento da aresta devido \u00e0 concentra\u00e7\u00e3o de tens\u00f5es. A sele\u00e7\u00e3o do a\u00e7o da ferramenta, portanto, determina diretamente a estabilidade da aresta e a vida \u00fatil da matriz.<\/p>\n\n\n\n

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

O principal desafio no corte fino \u00e9 manter a integridade das bordas sob desgaste simult\u00e2neo e tens\u00e3o compressiva extrema.<\/p>\n\n\n\n

\u00c9 necess\u00e1ria alta dureza para resistir ao desgaste e manter folgas precisas. No entanto, o aumento da dureza reduz a tenacidade, tornando a aresta de corte mais propensa a lascar sob carga. Em processos de estampagem fina, uma vez iniciadas as microfissuras na aresta, elas se propagam rapidamente, levando a falhas prematuras.<\/p>\n\n\n\n

Por essa raz\u00e3o, o a\u00e7o deve fornecer tenacidade suficiente para absorver sobrecargas localizadas, mantendo ao mesmo tempo resist\u00eancia ao desgaste suficiente para evitar a degrada\u00e7\u00e3o r\u00e1pida das bordas.<\/p>\n\n\n\n

O atrito na interface de corte complica ainda mais a sele\u00e7\u00e3o. A alta press\u00e3o de contato promove a ades\u00e3o do material \u00e0 superf\u00edcie do pun\u00e7\u00e3o, especialmente em longas s\u00e9ries de produ\u00e7\u00e3o. Isso aumenta o risco de engripamento e acelera o desgaste. Na pr\u00e1tica, a\u00e7os com baixa uniformidade microestrutural s\u00e3o mais propensos ao in\u00edcio de trincas e a um comportamento inst\u00e1vel em rela\u00e7\u00e3o ao desgaste.<\/p>\n\n\n\n

Consequentemente, a vida \u00fatil da ferramenta depende do equil\u00edbrio entre a resist\u00eancia ao desgaste causado pelo carboneto e a tenacidade da matriz, e n\u00e3o apenas da dureza.<\/p>\n\n\n\n

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

Na estampagem fina, diferentes componentes do conjunto de matrizes exigem propriedades de material distintas. A sele\u00e7\u00e3o deve ser baseada na fun\u00e7\u00e3o, e n\u00e3o em uma \u00fanica qualidade de material para todas as pe\u00e7as.<\/p>\n\n\n\n

\n

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

O A2 \u00e9 normalmente usado em placas de anel em V, porta-pun\u00e7\u00f5es e outros componentes estruturais onde a resist\u00eancia a fissuras \u00e9 fundamental.<\/p>\n\n\n\n

Oferece maior resist\u00eancia do que os a\u00e7os de alto carbono e alto cromo, permitindo suportar for\u00e7as combinadas de compress\u00e3o e desmoldagem sem ruptura fr\u00e1gil. Sua estabilidade dimensional durante o tratamento t\u00e9rmico tamb\u00e9m ajuda a manter o alinhamento da matriz e o controle da folga.<\/p>\n\n\n\n

A dureza A2 \u00e9 geralmente aplicada entre 57 e 60 HRC e \u00e9 adequada para volumes de produ\u00e7\u00e3o moderados ou aplica\u00e7\u00f5es onde o risco de lascamento \u00e9 uma preocupa\u00e7\u00e3o.<\/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
\n

A\u00e7o ferramenta AISI D2 | 1.2379 | SKD11<\/h3>\n\n\n\n

O a\u00e7o D2 \u00e9 a escolha padr\u00e3o para arestas de corte em opera\u00e7\u00f5es de estampagem fina de alto volume, onde a resist\u00eancia ao desgaste \u00e9 o fator limitante na vida \u00fatil da ferramenta.<\/p>\n\n\n\n

Seu alto teor de carbonetos proporciona excelente resist\u00eancia ao desgaste abrasivo, permitindo que a matriz mantenha arestas afiadas e folgas m\u00ednimas durante longos per\u00edodos de produ\u00e7\u00e3o. No entanto, sua menor tenacidade a torna mais suscet\u00edvel a lascas nas arestas sob condi\u00e7\u00f5es de carga inst\u00e1veis.<\/p>\n\n\n\n

O D2 apresenta melhor desempenho em processos est\u00e1veis com impacto controlado e \u00e9 normalmente utilizado em durezas de 58 a 62 HRC.<\/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
\n

Fornecedor de a\u00e7o ferramenta AISI S7 | DIN 1.2355<\/h3>\n\n\n\n

O a\u00e7o S7 \u00e9 utilizado em componentes estruturais submetidos a cargas elevadas, como placas de press\u00e3o e retentores. Essas pe\u00e7as absorvem for\u00e7as de compress\u00e3o e impacto significativas durante a opera\u00e7\u00e3o.<\/p>\n\n\n\n

Sua alta resist\u00eancia ao impacto impede rachaduras sob cargas repetidas, tornando-o confi\u00e1vel em fun\u00e7\u00f5es de suporte de alta tens\u00e3o. No entanto, devido \u00e0 sua menor resist\u00eancia ao desgaste, n\u00e3o \u00e9 adequado para arestas de corte.<\/p>\n\n\n\n

O a\u00e7o S7 \u00e9 normalmente tratado termicamente at\u00e9 atingir uma dureza de 54\u201358 HRC para maximizar sua resist\u00eancia.<\/p>\n\n\n\n

\n
Enviar consulta agora<\/a><\/div>\n\n\n\n
Veja os detalhes de fornecimento de materiais S7<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n
\n

A\u00e7os r\u00e1pidos PM (metalurgia do p\u00f3)<\/h3>\n\n\n\n

Os a\u00e7os r\u00e1pidos PM s\u00e3o utilizados em aplica\u00e7\u00f5es exigentes de estampagem fina, onde s\u00e3o necess\u00e1rias simultaneamente resist\u00eancia ao desgaste e tenacidade.<\/p>\n\n\n\n

Sua microestrutura uniforme reduz o n\u00famero de pontos de inicia\u00e7\u00e3o de trincas em compara\u00e7\u00e3o com o a\u00e7o D2 convencional, diminuindo significativamente o risco de lascamento das bordas. Ao mesmo tempo, mant\u00eam alta dureza e resist\u00eancia ao desgaste, tornando-os adequados para opera\u00e7\u00f5es de alta carga e alta precis\u00e3o.<\/p>\n\n\n\n

Esses a\u00e7os s\u00e3o normalmente usados em n\u00edveis de dureza acima de 60 HRC, quando a vida \u00fatil prolongada da ferramenta e a estabilidade do processo s\u00e3o essenciais.<\/p>\n<\/div>\n\n\n\n

Tabela Resumo<\/h2>\n\n\n\n
A\u00e7o ferramenta de alta qualidade<\/td>Dureza t\u00edpica<\/td>Principal vantagem das matrizes de corte fino<\/td><\/tr>
AISI A2<\/td>57\u201360 HRC<\/td>Maior resist\u00eancia; adequado para pe\u00e7as estruturais e cargas moderadas.<\/td><\/tr>
AISI D2<\/td>58\u201362 HRC<\/td>Alta resist\u00eancia ao desgaste; ideal para longas s\u00e9ries de produ\u00e7\u00e3o.<\/td><\/tr>
AISI S7<\/td>54\u201358 HRC<\/td>Alta resist\u00eancia ao impacto; usado para componentes de suporte.<\/td><\/tr>
PM Alta Velocidade<\/td>60\u201364+ HRC<\/td>Combina resist\u00eancia ao desgaste e tenacidade; reduz o risco de lascamento.<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Selection of Tool Steel for Fine Blanking Dies Fine blanking is a precision cold forming process designed to produce fully sheared edges with minimal fracture zones. By applying a V-ring indenter, the material is subjected to high compressive stress before shearing, thereby promoting plastic flow rather than crack propagation. Compared with conventional blanking, this results […]<\/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":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","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-12005","page","type-page","status-publish","hentry"],"yoast_head":"\nFine Blanking Tool Steel Selection | D2, A2, S7 Guide | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Learn how to select tool steel for fine blanking dies. Compare D2, A2, S7 and PM steels based on wear resistance, toughness, and die life performance.\" \/>\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-fine-blanking-dies\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fine Blanking Tool Steel Selection | D2, A2, S7 Guide | Aobo Steel\" \/>\n<meta property=\"og:description\" content=\"Learn how to select tool steel for fine blanking dies. 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