{"id":11658,"date":"2025-12-23T11:24:19","date_gmt":"2025-12-23T03:24:19","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=11658"},"modified":"2026-10-28T08:18:54","modified_gmt":"2026-10-28T00:18:54","slug":"selection-of-tool-steel-for-hot-stamping","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/selection-of-tool-steel-for-hot-stamping\/","title":{"rendered":"Sele\u00e7\u00e3o de a\u00e7o ferramenta para estampagem a quente (endurecimento por prensagem)"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp\" alt=\"Bulk tool steel bar stock in the Aobo Steel warehouse\"\/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" style=\"font-size:20px\"><em>Aobo Steel | Fornecedor global de a\u00e7o para ferramentas na China<\/em><\/h4>\n\n\n\n<h1 class=\"wp-block-heading has-text-align-center\" style=\"font-size:36px\">Sele\u00e7\u00e3o de a\u00e7o ferramenta para estampagem a quente (endurecimento por prensagem)<\/h1>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button popmake-16052\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/pt\/contact\/\">Solicite uma consulta r\u00e1pida<\/a><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A estampagem a quente, tamb\u00e9m conhecida como endurecimento por prensagem, \u00e9 um processo de conforma\u00e7\u00e3o n\u00e3o isot\u00e9rmica amplamente utilizado na ind\u00fastria automotiva. \u00c9 empregado principalmente na fabrica\u00e7\u00e3o de componentes estruturais em a\u00e7o de ultra-alta resist\u00eancia com m\u00ednimo afinamento e retorno el\u00e1stico.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nesse processo, tarugos de a\u00e7o ligado com boro, tipicamente 22MnB5, s\u00e3o aquecidos a 900 \u00b0C\u2013950 \u00b0C para austenitiza\u00e7\u00e3o. O tarugo quente \u00e9 ent\u00e3o transferido rapidamente para uma matriz resfriada internamente, onde ocorre a conforma\u00e7\u00e3o e <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-heat-treatment-guide\/\">t\u00eampera<\/a> ocorrem simultaneamente dentro da ferramenta, transformando a pe\u00e7a de trabalho em <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-heat-treatment-troubleshooting-chart\/\">martensita<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Como a conforma\u00e7\u00e3o e a transforma\u00e7\u00e3o de fase ocorrem na mesma matriz, a ferramenta n\u00e3o s\u00f3 deve suportar elevadas cargas mec\u00e2nicas provenientes das press\u00f5es de conforma\u00e7\u00e3o e fechamento, como tamb\u00e9m funcionar como um eficiente trocador de calor. Durante a produ\u00e7\u00e3o, a matriz deve absorver e dissipar continuamente uma quantidade substancial de energia (at\u00e9 100 kW) e sofrer gradientes de temperatura extremos (at\u00e9 25 K\/mm) entre as suas camadas internas e superficiais, o que gera tens\u00f5es t\u00e9rmicas.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Al\u00e9m disso, para garantir a transforma\u00e7\u00e3o martens\u00edtica completa dentro da matriz, as taxas de resfriamento n\u00e3o devem ser inferiores a 27 K\/s. Os materiais das matrizes de estampagem a quente suportam intensos estresses t\u00e9rmicos e mec\u00e2nicos c\u00edclicos, tornando a sele\u00e7\u00e3o adequada de <a href=\"https:\/\/aobosteel.com\/pt\/tool-steels\/\">a\u00e7os para ferramentas<\/a> O primeiro passo crucial para uma estampagem a quente bem-sucedida.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:28px\">Fatores de sele\u00e7\u00e3o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ao selecionar a\u00e7o ferramenta para estampagem a quente, as propriedades do material devem levar em considera\u00e7\u00e3o a capacidade de gerenciamento t\u00e9rmico e a confiabilidade em servi\u00e7o.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-thermal-conductivity\/\">condutividade t\u00e9rmica<\/a>. A produtividade em uma linha de estampagem a quente depende em grande parte da efici\u00eancia de dissipa\u00e7\u00e3o de calor da matriz. Uma maior condutividade t\u00e9rmica facilita a remo\u00e7\u00e3o r\u00e1pida e uniforme do calor durante a etapa de t\u00eampera, evitando a forma\u00e7\u00e3o de pontos quentes localizados e garantindo que a pe\u00e7a atinja a taxa de resfriamento necess\u00e1ria.<\/li>\n\n<li>Resist\u00eancia \u00e0 <a href=\"https:\/\/aobosteel.com\/pt\/thermal-fatigue-resistant-tool-steels\/\">Fissura\u00e7\u00e3o t\u00e9rmica<\/a> Fadiga T\u00e9rmica. Durante a estampagem a quente, a superf\u00edcie da matriz entra em contato repetidamente com pe\u00e7as brutas em alta temperatura e \u00e9 submetida a resfriamento interno por \u00e1gua, causando expans\u00e3o e contra\u00e7\u00e3o peri\u00f3dicas da camada superficial. Esse ciclo t\u00e9rmico induz fadiga t\u00e9rmica na superf\u00edcie da matriz, formando gradualmente &quot;trincas t\u00e9rmicas&quot; \u2014 fissuras superficiais com distribui\u00e7\u00e3o em forma de rede. Portanto, aumentar a resist\u00eancia do a\u00e7o ferramenta \u00e0s trincas t\u00e9rmicas \u00e9 fundamental para prolongar a vida \u00fatil da ferramenta.<\/li>\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-hot-hardness-chart\/\">Resist\u00eancia \u00e0 Temperagem<\/a>. Como as ferramentas s\u00e3o submetidas a altas temperaturas superficiais durante a conforma\u00e7\u00e3o e t\u00eampera, o a\u00e7o ferramenta deve apresentar excelente resist\u00eancia ao amolecimento, principalmente \u00e0 revenida. Uma resist\u00eancia suficiente a altas temperaturas ajuda a manter a estabilidade geom\u00e9trica sob cargas de servi\u00e7o e suprime eficazmente a forma\u00e7\u00e3o de sulcos. <a href=\"https:\/\/aobosteel.com\/pt\/plastic-deformation-resistant-tool-steels\/\">deforma\u00e7\u00e3o pl\u00e1stica<\/a>.<\/li>\n\n<li><a href=\"https:\/\/aobosteel.com\/pt\/abrasive-wear-resistant-tool-steels\/\">Resist\u00eancia ao desgaste<\/a>. Embora as cargas mec\u00e2nicas nas matrizes durante a estampagem a quente sejam menores do que na extrus\u00e3o a frio, a resist\u00eancia ao desgaste continua sendo essencial para garantir a qualidade da superf\u00edcie e as toler\u00e2ncias dimensionais, principalmente em condi\u00e7\u00f5es de produ\u00e7\u00e3o em massa a longo prazo.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:28px\">A\u00e7os-ferramenta recomendados<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Considerando os requisitos abrangentes de capacidade de gerenciamento t\u00e9rmico, resist\u00eancia a altas temperaturas e resist\u00eancia \u00e0 fadiga t\u00e9rmica durante o processo de t\u00eampera por prensagem, as seguintes classes de a\u00e7o ferramenta s\u00e3o comumente selecionadas para matrizes de estampagem a quente.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR.avif\" alt=\"A\u00c7O H13\" class=\"wp-image-5788\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H13-STEEL-FLAT-BAR-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-1b2ccf01 wp-block-group-is-layout-constrained\" style=\"border-radius:10px;background-color:#f4f8ff;margin-bottom:22px;padding-top:22px;padding-right:26px;padding-bottom:20px;padding-left:26px\">\n\n<h3 class=\"wp-block-heading\" style=\"font-size:22px\">A\u00e7o para ferramentas H13 | 1.2344 | SKD61<\/h3>\n\n\n<p class=\"wp-block-paragraph\">O AISI H13 \u00e9 um dos a\u00e7os-ferramenta mais utilizados em aplica\u00e7\u00f5es de trabalho a quente, amplamente empregado em matrizes de fundi\u00e7\u00e3o, forjamento e estampagem a quente, servindo como material de refer\u00eancia neste campo. Este a\u00e7o equilibra <a href=\"https:\/\/aobosteel.com\/pt\/tool-steels-for-cracking-resistance\/\">Tenacidade<\/a> Com resist\u00eancia ao rachamento por calor. O H13 apresenta excelente desempenho. <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-hardenability-chart\/\">temperabilidade<\/a> durante o tratamento t\u00e9rmico com distor\u00e7\u00e3o m\u00ednima. O H13 tamb\u00e9m apresenta boa resist\u00eancia ao amolecimento em temperaturas elevadas, mantendo <a href=\"https:\/\/aobosteel.com\/pt\/hardness-testing-methods\/\">dureza<\/a> abaixo de aproximadamente 425\u00b0C. Pode ser temperado em \u00e1gua para uso em matrizes de estampagem a quente. Sua dureza t\u00edpica de trabalho varia de 42 a 53 HRC.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" style=\"color:#074fd0;background-color:#ffffff\" href=\"https:\/\/aobosteel.com\/pt\/h13-tool-steel\/\">Saiba mais sobre H13<\/a><\/div>\n\n\n<div class=\"wp-block-button popmake-16052\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/pt\/contact\/\">Enviar consulta agora<\/a><\/div>\n\n<\/div>\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT.avif\" alt=\"A\u00e7o para ferramentas H11\" class=\"wp-image-6292\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-1b2ccf01 wp-block-group-is-layout-constrained\" style=\"border-radius:10px;background-color:#f4f8ff;margin-bottom:22px;padding-top:22px;padding-right:26px;padding-bottom:20px;padding-left:26px\">\n\n<h3 class=\"wp-block-heading\" style=\"font-size:22px\">A\u00e7o ferramenta H11 | 1.2343 | SKD6 (Alternativa de alta tenacidade)<\/h3>\n\n\n<p class=\"wp-block-paragraph\">AISI H11 \u00e9 um a\u00e7o cromo 5%. <a href=\"https:\/\/aobosteel.com\/pt\/hot-work-tool-steels\/\">a\u00e7o para trabalho a quente<\/a> Com composi\u00e7\u00e3o semelhante \u00e0 do H13, mas com menor teor de van\u00e1dio, o H11 oferece tenacidade e resist\u00eancia \u00e0 fratura superiores. \u00c9 particularmente adequado para ferramentas de trabalho a quente com risco de fissura\u00e7\u00e3o grosseira (falha catastr\u00f3fica). Assim como o H13, este tipo de a\u00e7o \u00e9 temperado ao ar e apresenta distribui\u00e7\u00e3o de propriedades relativamente uniforme em matrizes de grande se\u00e7\u00e3o transversal. O H11 exibe forte resist\u00eancia ao amolecimento t\u00e9rmico e \u00e9 uma escolha padr\u00e3o para ferramentas de trabalho a quente, operando tipicamente na faixa de dureza de 38 a 54 HRC. Para aplica\u00e7\u00f5es altamente suscet\u00edveis a fissura\u00e7\u00e3o, pode-se selecionar o \u201cH11 com baixo teor de sil\u00edcio\u201d, que oferece maior tenacidade.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-color has-background wp-element-button\" style=\"color:#074fd0;background-color:#ffffff\" href=\"https:\/\/aobosteel.com\/pt\/h11-tool-steel\/\">Saiba mais sobre H11<\/a><\/div>\n\n\n<div class=\"wp-block-button popmake-16052\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/aobosteel.com\/pt\/contact\/\">Enviar consulta agora<\/a><\/div>\n\n<\/div>\n\n<\/div>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-1b2ccf01 wp-block-group-is-layout-constrained\" style=\"border-radius:10px;background-color:#f4f8ff;margin-bottom:22px;padding-top:22px;padding-right:26px;padding-bottom:20px;padding-left:26px\">\n\n<h3 class=\"wp-block-heading\" style=\"font-size:22px\">DIN 1.2367(H10 Modificado)<\/h3>\n\n\n<p class=\"wp-block-paragraph\">O a\u00e7o DIN 1.2367 (H10 Modificado) \u00e9 um a\u00e7o para trabalho a quente com baixo teor de cromo, otimizado especificamente para matrizes de t\u00eampera por prensagem e estampagem a quente. O DIN 1.2367 (H10 Modificado) cont\u00e9m maior teor de molibd\u00eanio, oferecendo resist\u00eancia ao revenido significativamente superior em compara\u00e7\u00e3o com os a\u00e7os H13 ou H11. Sua alta condutividade t\u00e9rmica facilita a r\u00e1pida dissipa\u00e7\u00e3o de calor, tornando-o adequado para matrizes pequenas e de alta resist\u00eancia, sujeitas a severos choques t\u00e9rmicos e que dependem de refrigera\u00e7\u00e3o a \u00e1gua. Para aplica\u00e7\u00f5es em que os a\u00e7os padr\u00e3o falham prematuramente devido \u00e0 fadiga t\u00e9rmica ou \u00e0 resist\u00eancia insuficiente a altas temperaturas, o DIN 1.2367 (H10 Modificado) \u00e9 uma escolha superior. <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-tempering-chart\/\">t\u00eampera<\/a> A 600 \u00b0C, sua dureza atinge 52\u201354 HRC, e a norma DIN 1.2367 (H10 Modificado) apresenta desempenho superior em altas temperaturas. <a href=\"https:\/\/aobosteel.com\/pt\/tool-steel-properties-chart\/\">resist\u00eancia ao escoamento<\/a> em compara\u00e7\u00e3o com H13\/H11.<\/p>\n\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:28px\">Perguntas frequentes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Quais fatores determinam a sele\u00e7\u00e3o do a\u00e7o ferramenta para estampagem a quente?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os principais fatores incluem condutividade t\u00e9rmica para dissipa\u00e7\u00e3o de calor, resist\u00eancia a fissuras t\u00e9rmicas, resist\u00eancia a altas temperaturas para evitar o amolecimento e resist\u00eancia ao desgaste para garantir a qualidade da superf\u00edcie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Por que a condutividade t\u00e9rmica \u00e9 importante em matrizes de t\u00eampera por prensagem?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A alta condutividade t\u00e9rmica permite uma remo\u00e7\u00e3o de calor r\u00e1pida e uniforme durante o resfriamento r\u00e1pido. Isso evita pontos quentes localizados, garante que a pe\u00e7a atinja a taxa de resfriamento necess\u00e1ria e aumenta diretamente a efici\u00eancia da produ\u00e7\u00e3o.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Qual o melhor a\u00e7o ferramenta para matrizes de estampagem a quente?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As op\u00e7\u00f5es mais comuns incluem o AISI H13, que oferece um equil\u00edbrio entre resist\u00eancia e durabilidade em caso de fissura\u00e7\u00e3o t\u00e9rmica, o AISI H11, que proporciona alta resist\u00eancia, e o DIN 1.2367, que oferece resist\u00eancia superior ao choque t\u00e9rmico e alta condutividade.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Quando devo escolher o a\u00e7o AISI H11 em vez do H13?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Selecione o a\u00e7o AISI H11 quando a ferramenta apresentar risco de fissuras graves ou falha catastr\u00f3fica. Ele cont\u00e9m menos van\u00e1dio que o H13, proporcionando maior tenacidade e resist\u00eancia \u00e0 fratura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Quais s\u00e3o os benef\u00edcios da norma DIN 1.2367 para estampagem a quente?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A norma DIN 1.2367 possui maior condutividade t\u00e9rmica e resist\u00eancia superior ao revenido em compara\u00e7\u00e3o com a H13. \u00c9 ideal para matrizes pequenas e de alta resist\u00eancia, submetidas a choques t\u00e9rmicos severos e que exigem r\u00e1pida dissipa\u00e7\u00e3o de calor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>O que causa fissuras t\u00e9rmicas em ferramentas de estampagem a quente?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A fissura\u00e7\u00e3o t\u00e9rmica resulta da fadiga t\u00e9rmica causada pela expans\u00e3o e contra\u00e7\u00e3o c\u00edclicas. A superf\u00edcie da matriz alterna continuamente entre o contato com as pe\u00e7as brutas aquecidas e o resfriamento interno por \u00e1gua, formando eventualmente um padr\u00e3o de fissuras semelhante a uma rede.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Qual \u00e9 a dureza t\u00edpica dos a\u00e7os para ferramentas de estampagem a quente?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A dureza de trabalho varia de acordo com a classe: o AISI H13 normalmente opera entre 42 e 53 HRC, o AISI H11 entre 38 e 54 HRC, e o DIN 1.2367 atinge 52 a 54 HRC ap\u00f3s o revenido.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><strong>Por que as matrizes de t\u00eampera por prensagem precisam de resist\u00eancia a altas temperaturas?<\/strong><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As matrizes s\u00e3o submetidas a temperaturas superficiais elevadas durante a conforma\u00e7\u00e3o e o resfriamento. Uma resist\u00eancia suficiente a altas temperaturas impede o amolecimento e a deforma\u00e7\u00e3o pl\u00e1stica, garantindo que a ferramenta mantenha sua estabilidade geom\u00e9trica sob cargas pesadas.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aobo Steel | Global Tool Steel Supplier in China Selection of Tool Steel for Hot Stamping (Press Hardening) Hot Stamping, also known as Press Hardening, is a widely used non-isothermal forming process in the automotive industry. It is primarily employed to manufacture structural components from ultra-high-strength steel with minimal thinning and springback. 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