{"id":15543,"date":"2026-05-19T16:22:00","date_gmt":"2026-05-19T08:22:00","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15543"},"modified":"2026-06-25T15:23:13","modified_gmt":"2026-06-25T07:23:13","slug":"oil-hardening-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/oil-hardening-tool-steel\/","title":{"rendered":"A\u00e7o ferramenta para t\u00eampera em \u00f3leo: classes, propriedades e usos"},"content":{"rendered":"<section class=\"aobo-oil-hardening-page\">\n\n  <style>\n    .aobo-oil-hardening-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #073b8e;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-blue-line: #c9dcff;\n      --aobo-border: #d7e5fb;\n      --aobo-text: #203044;\n      --aobo-muted: #617087;\n      --aobo-orange: #f59b23;\n      --aobo-white: #ffffff;\n      --aobo-shadow: 0 18px 45px rgba(12, 86, 208, 0.10);\n      font-family: Arial, Helvetica, sans-serif;\n      color: var(--aobo-text);\n      line-height: 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border-color: #ffffff;\n      color: var(--aobo-blue) !important;\n    }\n\n    @media (max-width: 980px) {\n      .aobo-product-grid {\n        grid-template-columns: repeat(2, minmax(0, 1fr));\n      }\n    }\n\n    @media (max-width: 620px) {\n      .aobo-wrap {\n        padding: 0;\n      }\n\n      .aobo-hero {\n        padding: 30px 22px;\n      }\n\n      .aobo-product-grid {\n        grid-template-columns: 1fr;\n      }\n\n      .aobo-product-strip {\n        padding: 20px;\n      }\n\n      .aobo-buttons {\n        flex-direction: column;\n      }\n\n      .aobo-article h2 {\n        font-size: 25px;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-wrap\">\n\n    <header class=\"aobo-hero\">\n      <span class=\"aobo-eyebrow\">Guia T\u00e9cnico de A\u00e7os para Ferramentas<\/span>\n      <h1>A\u00e7o ferramenta para t\u00eampera em \u00f3leo: classes, propriedades, tratamento t\u00e9rmico e aplica\u00e7\u00f5es<\/h1>\n      <p>\n        O a\u00e7o ferramenta de t\u00eampera em \u00f3leo \u00e9 uma fam\u00edlia de a\u00e7os para trabalho a frio que endurecem por t\u00eampera em \u00f3leo ap\u00f3s a austenitiza\u00e7\u00e3o. Na classifica\u00e7\u00e3o AISI, esses a\u00e7os pertencem ao Grupo O. As principais classes de a\u00e7o ferramenta de t\u00eampera em \u00f3leo s\u00e3o O1, O2, O6 e O7.\n      <\/p>\n    <\/header>\n\n    <section class=\"aobo-product-strip\" aria-label=\"A\u00e7os para ferramentas com t\u00eampera em \u00f3leo dispon\u00edveis na Aobo Steel.\">\n      <h2>A\u00e7os para ferramentas com t\u00eampera em \u00f3leo dispon\u00edveis na Aobo Steel.<\/h2>\n      <p class=\"aobo-strip-intro\">\n        A Aobo Steel fornece a\u00e7o ferramenta para t\u00eampera em \u00f3leo em barras redondas e planas a granel para matrizes de trabalho a frio, pun\u00e7\u00f5es, calibradores, ferramentas de corte e aplica\u00e7\u00f5es de ferramentas de precis\u00e3o.\n      <\/p>\n\n      <div class=\"aobo-product-grid\">\n\n        <article class=\"aobo-product-card\">\n          <div class=\"aobo-product-image\">\n            <img src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/o1-steel.avif\" alt=\"Barra de a\u00e7o ferramenta O1\" loading=\"lazy\" decoding=\"async\">\n          <\/div>\n          <h3>O1 | 1.2510 | SKS3<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o ferramenta de uso geral, temper\u00e1vel em \u00f3leo, para matrizes de trabalho a frio, pun\u00e7\u00f5es, calibradores e ferramentas de corte.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/o1-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n        <article class=\"aobo-product-card\">\n          <div class=\"aobo-product-image\">\n            <img src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/O2-steel-scaled.avif\" alt=\"Barra de a\u00e7o ferramenta O2\" loading=\"lazy\" decoding=\"async\">\n          <\/div>\n          <h3>O2 | 1,2842 | 90MnCrV8<\/h3>\n          <p class=\"aobo-card-note\">A\u00e7o ferramenta para t\u00eampera em \u00f3leo, utilizado onde o controle dimensional e a seguran\u00e7a no tratamento t\u00e9rmico s\u00e3o importantes.<\/p>\n          <div class=\"aobo-buttons\">\n            <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/pt\/o2-tool-steel\/\">Ver detalhes<\/a>\n            <a class=\"aobo-btn aobo-btn-inquiry popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n          <\/div>\n        <\/article>\n\n      <\/div>\n    <\/section>\n\n    <main class=\"aobo-article\">\n\n      <p>\n        Esses a\u00e7os geralmente cont\u00eam de 0,85% a 1,55% de carbono, com adi\u00e7\u00f5es moderadas de mangan\u00eas, cromo, tungst\u00eanio, molibd\u00eanio ou sil\u00edcio. Essa composi\u00e7\u00e3o da liga confere a eles maior temperabilidade do que os a\u00e7os-ferramenta comuns para t\u00eampera em \u00e1gua. Como resultado, eles podem atingir maior dureza com t\u00eampera em \u00f3leo do que com t\u00eampera em \u00e1gua.\n      <\/p>\n      <p>\n        Os a\u00e7os para ferramentas de t\u00eampera em \u00f3leo situam-se entre os a\u00e7os de t\u00eampera em \u00e1gua e os a\u00e7os de t\u00eampera ao ar. S\u00e3o mais seguros para t\u00eampera do que os a\u00e7os de t\u00eampera em \u00e1gua, pois a t\u00eampera em \u00f3leo reduz o risco de fissuras e distor\u00e7\u00f5es. Comparados aos a\u00e7os de t\u00eampera ao ar, s\u00e3o geralmente mais f\u00e1ceis de usinar e mais econ\u00f4micos, mas tipicamente oferecem menor estabilidade dimensional e resist\u00eancia ao desgaste sob condi\u00e7\u00f5es severas de usinagem.\n      <\/p>\n      <p>\n        Sua melhor aplica\u00e7\u00e3o \u00e9 em ferramentas para trabalho a frio que exigem equil\u00edbrio entre dureza, resist\u00eancia ao desgaste, usinabilidade, seguran\u00e7a no tratamento t\u00e9rmico e custo-benef\u00edcio. Sua principal limita\u00e7\u00e3o \u00e9 a baixa resist\u00eancia ao amolecimento em altas temperaturas. Para matrizes de trabalho a quente, ferramentas de fundi\u00e7\u00e3o sob press\u00e3o ou ferramentas de corte de alta velocidade, os a\u00e7os para trabalho a quente ou a\u00e7os r\u00e1pidos s\u00e3o mais adequados.\n      <\/p>\n\n      <h2>A\u00e7o ferramenta temper\u00e1vel em \u00f3leo versus a\u00e7o temper\u00e1vel em \u00e1gua e a\u00e7o temper\u00e1vel ao ar<\/h2>\n      <p>\n        O a\u00e7o ferramenta de t\u00eampera em \u00f3leo \u00e9 melhor compreendido ao compar\u00e1-lo com os dois grupos vizinhos de a\u00e7o ferramenta para trabalho a frio: os a\u00e7os de t\u00eampera em \u00e1gua e os a\u00e7os de t\u00eampera ao ar.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Item<\/th>\n              <th>A\u00e7o ferramenta endurec\u00edvel em \u00e1gua<\/th>\n              <th>A\u00e7o ferramenta para t\u00eampera em \u00f3leo<\/th>\n              <th>A\u00e7o ferramenta para t\u00eampera ao ar<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Notas t\u00edpicas<\/td>\n              <td>W1, W2<\/td>\n              <td>O1, O2, O6, O7<\/td>\n              <td>A2, A6, A7, A10<\/td>\n            <\/tr>\n            <tr>\n              <td>M\u00e9todo de t\u00eampera<\/td>\n              <td>\u00c1gua ou salmoura<\/td>\n              <td>\u00d3leo<\/td>\n              <td>Ar condicionado ou refrigera\u00e7\u00e3o controlada<\/td>\n            <\/tr>\n            <tr>\n              <td>Conte\u00fado da liga<\/td>\n              <td>Baixo<\/td>\n              <td>Moderado<\/td>\n              <td>Mais alto<\/td>\n            <\/tr>\n            <tr>\n              <td>Temperabilidade<\/td>\n              <td>Baixo<\/td>\n              <td>M\u00e9dio<\/td>\n              <td>Alto<\/td>\n            <\/tr>\n            <tr>\n              <td>Risco de distor\u00e7\u00e3o<\/td>\n              <td>Alto<\/td>\n              <td>M\u00e9dio<\/td>\n              <td>Baixo<\/td>\n            <\/tr>\n            <tr>\n              <td>risco de rachaduras<\/td>\n              <td>Alto<\/td>\n              <td>Inferior \u00e0 s\u00e9rie W<\/td>\n              <td>Geralmente o mais baixo entre esses grupos.<\/td>\n            <\/tr>\n            <tr>\n              <td>Usinabilidade<\/td>\n              <td>Muito bom<\/td>\n              <td>Bom<\/td>\n              <td>Geralmente mais baixo<\/td>\n            <\/tr>\n            <tr>\n              <td>Resist\u00eancia ao desgaste<\/td>\n              <td>Moderado<\/td>\n              <td>Bom<\/td>\n              <td>Geralmente mais alto<\/td>\n            <\/tr>\n            <tr>\n              <td>Custo<\/td>\n              <td>Geralmente o mais baixo<\/td>\n              <td>Econ\u00f4mico<\/td>\n              <td>Geralmente mais alto<\/td>\n            <\/tr>\n            <tr>\n              <td>Melhor uso<\/td>\n              <td>Ferramentas simples e aplica\u00e7\u00f5es de baixo custo<\/td>\n              <td>Ferramentas gerais para trabalho a frio que necessitam de t\u00eampera mais segura<\/td>\n              <td>Ferramentas complexas, longas s\u00e9ries de produ\u00e7\u00e3o e controle dimensional mais rigoroso.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>\n        Os a\u00e7os de t\u00eampera em \u00e1gua s\u00e3o simples e de baixo custo, mas seu processo de t\u00eampera severo os torna arriscados para ferramentas complexas. Os a\u00e7os de t\u00eampera em \u00f3leo reduzem esse risco, mantendo boa usinabilidade e custo razo\u00e1vel.\n      <\/p>\n      <p>\n        Os a\u00e7os de endurecimento ao ar proporcionam melhor estabilidade dimensional porque esfriam mais lentamente e cont\u00eam mais elementos de liga. S\u00e3o mais adequados para matrizes complexas, se\u00e7\u00f5es grandes e longos per\u00edodos de produ\u00e7\u00e3o, mas geralmente s\u00e3o mais caros e mais dif\u00edceis de usinar.\n      <\/p>\n\n      <h2>Principais classes de a\u00e7o ferramenta para t\u00eampera em \u00f3leo<\/h2>\n      <p>\n        A s\u00e9rie O n\u00e3o \u00e9 uma fam\u00edlia extensa. As classes mais importantes s\u00e3o O1, O2, O6 e O7. Cada classe tem uma fun\u00e7\u00e3o diferente nas ferramentas de trabalho a frio.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Grau<\/th>\n              <th>Dire\u00e7\u00e3o principal de liga<\/th>\n              <th>Personagem Principal<\/th>\n              <th>Aplica\u00e7\u00f5es t\u00edpicas<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>O1<\/td>\n              <td>Mangan\u00eas, cromo, tungst\u00eanio<\/td>\n              <td>A\u00e7o ferramenta de uso geral, temper\u00e1vel em \u00f3leo, com equil\u00edbrio entre dureza, tenacidade, usinabilidade e resist\u00eancia ao desgaste.<\/td>\n              <td>Matrizes de corte, matrizes de conforma\u00e7\u00e3o, pun\u00e7\u00f5es, machos, alargadores, brochas, calibradores<\/td>\n            <\/tr>\n            <tr>\n              <td>O2<\/td>\n              <td>Principalmente mangan\u00eas<\/td>\n              <td>Temperatura de endurecimento mais baixa e bom controle dimensional durante o tratamento t\u00e9rmico.<\/td>\n              <td>Matrizes complexas, matrizes de lamina\u00e7\u00e3o de roscas, calibradores fixos, buchas, ferramentas de precis\u00e3o.<\/td>\n            <\/tr>\n            <tr>\n              <td>O6<\/td>\n              <td>Sil\u00edcio, mangan\u00eas, molibd\u00eanio, grafite livre<\/td>\n              <td>A\u00e7o grafitado endurec\u00edvel em \u00f3leo com excelente usinabilidade e comportamento antigripante.<\/td>\n              <td>Matrizes de estampagem profunda, rolos de conforma\u00e7\u00e3o, placas de desgaste, guias de m\u00e1quinas, hastes de ferramentas<\/td>\n            <\/tr>\n            <tr>\n              <td>O7<\/td>\n              <td>Maior teor de carbono e tungst\u00eanio<\/td>\n              <td>Maior resist\u00eancia ao desgaste e reten\u00e7\u00e3o de fio da s\u00e9rie O.<\/td>\n              <td>Facas de papel, ferramentas para trabalhar madeira, l\u00e2minas de corte, ferramentas de trabalho a frio com desgaste cr\u00edtico<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <h2>Principais propriedades do a\u00e7o ferramenta endurec\u00edvel em \u00f3leo<\/h2>\n      <p>\n        Os a\u00e7os ferramenta de t\u00eampera em \u00f3leo s\u00e3o valorizados por seu desempenho equilibrado em aplica\u00e7\u00f5es de trabalho a frio. Embora n\u00e3o ofere\u00e7am a maior resist\u00eancia ao desgaste ou a melhor estabilidade dimensional entre todos os a\u00e7os ferramenta, proporcionam uma combina\u00e7\u00e3o pr\u00e1tica de propriedades a um custo razo\u00e1vel.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Propriedade<\/th>\n              <th>Significado pr\u00e1tico<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Temperabilidade<\/td>\n              <td>Melhor do que os a\u00e7os de t\u00eampera em \u00e1gua, pois a adi\u00e7\u00e3o moderada de elementos de liga permite uma t\u00eampera mais profunda.<\/td>\n            <\/tr>\n            <tr>\n              <td>Dureza de trabalho<\/td>\n              <td>Geralmente, a dureza \u00e9 de cerca de 57 a 62 HRC ap\u00f3s t\u00eampera e revenido.<\/td>\n            <\/tr>\n            <tr>\n              <td>Faixa de dureza poss\u00edvel<\/td>\n              <td>Aproximadamente de 56 a 64 HRC, dependendo da classe, da dimens\u00e3o da se\u00e7\u00e3o e da temperatura de revenido.<\/td>\n            <\/tr>\n            <tr>\n              <td>Resist\u00eancia ao desgaste<\/td>\n              <td>Bom para ferramentas gerais de trabalho a frio, mas geralmente inferior a <a href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel\/\">D2<\/a> em abras\u00e3o severa<\/td>\n            <\/tr>\n            <tr>\n              <td>Estabilidade dimensional<\/td>\n              <td>Melhor que os a\u00e7os de t\u00eampera em \u00e1gua, mas geralmente inferior aos a\u00e7os de t\u00eampera ao ar.<\/td>\n            <\/tr>\n            <tr>\n              <td>Robustez<\/td>\n              <td>Moderado; adequado para muitas ferramentas de trabalho a frio, mas n\u00e3o ideal para cargas de impacto pesadas.<\/td>\n            <\/tr>\n            <tr>\n              <td>Usinabilidade<\/td>\n              <td>Em geral, bom; o O6 \u00e9 especialmente usin\u00e1vel devido ao grafite livre.<\/td>\n            <\/tr>\n            <tr>\n              <td>Dureza quente<\/td>\n              <td>Baixa temperatura; n\u00e3o adequado para uso repetido em altas temperaturas.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>\n        Os a\u00e7os de t\u00eampera em \u00f3leo podem atingir uma dureza maior do que os a\u00e7os de t\u00eampera em \u00e1gua. Isso \u00e9 vantajoso para ferramentas que necessitam de afia\u00e7\u00e3o ou retifica\u00e7\u00e3o frequentes, pois a dureza n\u00e3o se limita apenas a uma camada superficial.\n      <\/p>\n      <p>\n        A resist\u00eancia ao desgaste desses a\u00e7os prov\u00e9m principalmente do alto teor de carbono e da estrutura martens\u00edtica endurecida. O a\u00e7o O7 aprimora ainda mais a resist\u00eancia ao desgaste por meio de um teor mais elevado de carbono e tungst\u00eanio. No entanto, os a\u00e7os da s\u00e9rie O n\u00e3o cont\u00eam o grande volume de carbonetos encontrado nos a\u00e7os para trabalho a frio da s\u00e9rie D ou nos a\u00e7os r\u00e1pidos.\n      <\/p>\n      <p>\n        O6 \u00e9 a liga especial deste grupo. Durante o recozimento, parte do seu carbono forma grafite nodular livre. Essa grafite melhora a usinabilidade e reduz o desgaste por atrito durante o contato deslizante, tornando o O6 \u00fatil para matrizes de trefila\u00e7\u00e3o, cilindros de conforma\u00e7\u00e3o e componentes de m\u00e1quinas sujeitos a atrito.\n      <\/p>\n      <div class=\"aobo-note-box\">\n        <p>\n          A principal desvantagem \u00e9 a resist\u00eancia ao calor. Os a\u00e7os ferramenta de t\u00eampera em \u00f3leo amolecem se expostos a temperaturas elevadas por longos per\u00edodos. Normalmente, devem permanecer em servi\u00e7o de trabalho a frio, especialmente onde as temperaturas de opera\u00e7\u00e3o n\u00e3o excedam repetidamente cerca de 205 a 260 \u00b0C (400 a 500 \u00b0F).\n        <\/p>\n      <\/div>\n\n      <h2>Aplica\u00e7\u00f5es comuns do a\u00e7o ferramenta endurec\u00edvel em \u00f3leo<\/h2>\n      <p>\n        Os a\u00e7os ferramenta de t\u00eampera em \u00f3leo s\u00e3o usados principalmente em ferramentas que operam \u00e0 temperatura ambiente ou a temperaturas relativamente baixas. S\u00e3o adequados para ferramentas de produ\u00e7\u00e3o em lotes curtos a m\u00e9dios, ferramentas de precis\u00e3o e ferramentas gerais para trabalho a frio.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>\u00c1rea de aplica\u00e7\u00e3o<\/th>\n              <th>Ferramentas t\u00edpicas<\/th>\n              <th>Graus adequados<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Corte e aparamento<\/td>\n              <td>Matrizes de corte, matrizes de recorte, pun\u00e7\u00f5es<\/td>\n              <td>O1, O2, O7<\/td>\n            <\/tr>\n            <tr>\n              <td>Formando e desenhando<\/td>\n              <td>Matrizes de conforma\u00e7\u00e3o, matrizes de estampagem, matrizes de flangeamento, matrizes de cunhagem<\/td>\n              <td>O1, O2, O6<\/td>\n            <\/tr>\n            <tr>\n              <td>Corte e perfura\u00e7\u00e3o<\/td>\n              <td>Machos, alargadores, brochas, brocas, cortadores de corte, ferramentas de perfura\u00e7\u00e3o<\/td>\n              <td>O1, O7<\/td>\n            <\/tr>\n            <tr>\n              <td>Medi\u00e7\u00e3o de precis\u00e3o<\/td>\n              <td>Calibradores de plugue, calibradores de anel, calibradores de press\u00e3o, gabaritos, ferramentas mestras<\/td>\n              <td>O2 preferencial, O1<\/td>\n            <\/tr>\n            <tr>\n              <td>Pe\u00e7as de m\u00e1quinas deslizantes<\/td>\n              <td>Buchas, eixos, guias, pin\u00e7as, garras de mandril, rolos de alimenta\u00e7\u00e3o<\/td>\n              <td>O1, O6<\/td>\n            <\/tr>\n            <tr>\n              <td>ferramentas de moldagem de pl\u00e1stico<\/td>\n              <td>Moldes para baixas temperaturas e moldes para produ\u00e7\u00f5es de curta a m\u00e9dia dura\u00e7\u00e3o.<\/td>\n              <td>O1, O2<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>\n        Os a\u00e7os da s\u00e9rie O n\u00e3o s\u00e3o a\u00e7os de corte de alta velocidade. Eles podem funcionar em ferramentas de corte de baixa a m\u00e9dia velocidade, mas os a\u00e7os r\u00e1pidos s\u00e3o mais adequados quando o calor gerado durante o corte se torna um fator cr\u00edtico.\n      <\/p>\n\n      <h2>No\u00e7\u00f5es b\u00e1sicas de tratamento t\u00e9rmico de a\u00e7o ferramenta temperado em \u00f3leo<\/h2>\n      <p>\n        Os a\u00e7os para ferramentas de t\u00eampera em \u00f3leo s\u00e3o geralmente fornecidos em condi\u00e7\u00e3o recozida para usinagem. Ap\u00f3s a usinagem, a ferramenta \u00e9 endurecida por aquecimento, t\u00eampera em \u00f3leo e revenido.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Etapa<\/th>\n              <th>Finalidade<\/th>\n              <th>Intervalo t\u00edpico ou nota<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Pr\u00e9-aquecimento<\/td>\n              <td>Reduza o choque t\u00e9rmico antes do endurecimento.<\/td>\n              <td>Geralmente em torno de 650 \u00b0C, ou 1200 \u00b0F, especialmente para ferramentas maiores ou mais complexas.<\/td>\n            <\/tr>\n            <tr>\n              <td>Austenitiza\u00e7\u00e3o<\/td>\n              <td>Prepare o a\u00e7o para t\u00eampera.<\/td>\n              <td>Geralmente entre 790 e 885 \u00b0C, ou 1450 e 1625 \u00b0F, dependendo da qualidade.<\/td>\n            <\/tr>\n            <tr>\n              <td>t\u00eampera de \u00f3leo<\/td>\n              <td>Forme a estrutura endurecida<\/td>\n              <td>\u00c9 comum usar \u00f3leo morno, geralmente entre 32 e 70 \u00b0C (ou 90 e 160 \u00b0F).<\/td>\n            <\/tr>\n            <tr>\n              <td>Remo\u00e7\u00e3o do \u00f3leo<\/td>\n              <td>Reduza a tens\u00e3o de t\u00eampera antes do revenimento.<\/td>\n              <td>Geralmente s\u00e3o removidos a uma temperatura entre 50 e 66 \u00b0C, ou 120 e 150 \u00b0F.<\/td>\n            <\/tr>\n            <tr>\n              <td>T\u00eampera<\/td>\n              <td>Reduzir a fragilidade e ajustar a dureza.<\/td>\n              <td>Normalmente, temperaturas entre 150 e 260 \u00b0C, ou 300 e 500 \u00b0F, para ferramentas de trabalho a frio de alta dureza.<\/td>\n            <\/tr>\n            <tr>\n              <td>Temperamento superior<\/td>\n              <td>Melhore a resist\u00eancia quando necess\u00e1rio.<\/td>\n              <td>Temperaturas entre 288 e 315 \u00b0C, ou 550 e 600 \u00b0F, podem ser usadas quando a resist\u00eancia ao impacto for mais importante.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>\n        O a\u00e7o O1 geralmente utiliza uma faixa de austenitiza\u00e7\u00e3o mais alta do que o a\u00e7o O2. O a\u00e7o O2 pode endurecer a uma temperatura relativamente baixa, o que ajuda a reduzir a movimenta\u00e7\u00e3o durante o tratamento t\u00e9rmico. O a\u00e7o O7 requer um controle de t\u00eampera mais rigoroso, pois seu maior teor de carbono e tungst\u00eanio melhora a resist\u00eancia ao desgaste, mas reduz a temperabilidade em se\u00e7\u00f5es mais espessas. Em ferramentas de a\u00e7o O7 mais espessas, a temperatura do \u00f3leo, a agita\u00e7\u00e3o e o tempo de transfer\u00eancia tornam-se mais cr\u00edticos.\n      <\/p>\n      <p>\n        A agita\u00e7\u00e3o do \u00f3leo \u00e9 importante durante o processo de t\u00eampera. Sem a movimenta\u00e7\u00e3o suficiente do \u00f3leo, pode ocorrer a forma\u00e7\u00e3o de vapor ao redor da ferramenta quente, o que torna o resfriamento lento e irregular. Isso pode causar pontos de fragilidade ou dureza desigual.\n      <\/p>\n      <p>\n        O revenimento deve ser feito imediatamente ap\u00f3s a t\u00eampera. O a\u00e7o temperado \u00e9 duro, por\u00e9m quebradi\u00e7o, e o revenimento confere \u00e0 ferramenta uma tenacidade adequada para uso. Para muitas ferramentas de trabalho a frio da s\u00e9rie O, a dureza final geralmente fica em torno de 58 a 62 HRC, mas a dureza necess\u00e1ria deve ser determinada pelo projeto da ferramenta e pelas condi\u00e7\u00f5es de servi\u00e7o.\n      <\/p>\n\n      <h2>Como escolher o a\u00e7o ferramenta adequado para t\u00eampera em \u00f3leo.<\/h2>\n      <p>\n        A sele\u00e7\u00e3o da classe de ferramenta deve come\u00e7ar pelo principal problema de funcionamento da mesma.\n      <\/p>\n\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr>\n              <th>Requisito principal<\/th>\n              <th>Nota recomendada<\/th>\n              <th>Raz\u00e3o<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Ferramentas de trabalho a frio de uso geral<\/td>\n              <td>O1<\/td>\n              <td>Propriedades equilibradas e ampla disponibilidade comercial<\/td>\n            <\/tr>\n            <tr>\n              <td>Distor\u00e7\u00e3o m\u00ednima durante o endurecimento<\/td>\n              <td>O2<\/td>\n              <td>Uma temperatura de austenitiza\u00e7\u00e3o mais baixa reduz a tens\u00e3o do tratamento t\u00e9rmico.<\/td>\n            <\/tr>\n            <tr>\n              <td>Alta usinabilidade e resist\u00eancia \u00e0 abras\u00e3o<\/td>\n              <td>O6<\/td>\n              <td>O grafite livre atua como um lubrificante s\u00f3lido, melhorando o corte e prevenindo o travamento.<\/td>\n            <\/tr>\n            <tr>\n              <td>M\u00e1xima resist\u00eancia ao desgaste e reten\u00e7\u00e3o de fio.<\/td>\n              <td>O7<\/td>\n              <td>Um maior teor de carbono e tungst\u00eanio forma carbonetos duros e resistentes \u00e0 abras\u00e3o.<\/td>\n            <\/tr>\n            <tr>\n              <td>Ferramentas de toler\u00e2ncia rigorosa e medidores de precis\u00e3o<\/td>\n              <td>O2<\/td>\n              <td>Melhor controle dimensional para projetos com toler\u00e2ncias rigorosas.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n\n      <p>\n        Para a maioria das ferramentas de uso geral, O1 \u00e9 o ponto de partida. Para ferramentas de precis\u00e3o ou com baixa distor\u00e7\u00e3o, O2 \u00e9 mais adequado. Para aplica\u00e7\u00f5es de estampagem, conforma\u00e7\u00e3o ou desgaste por deslizamento com risco de engripamento, O6 apresenta uma clara vantagem. Para arestas de corte e ferramentas sujeitas a desgaste cr\u00edtico, O7 \u00e9 a op\u00e7\u00e3o de t\u00eampera em \u00f3leo mais resistente.\n      <\/p>\n      <p>\n        Se a ferramenta for exposta a altas temperaturas, utilize a\u00e7o para trabalho a quente ou a\u00e7o r\u00e1pido. Se a ferramenta sofrer impactos fortes, considere o a\u00e7o resistente a choques. Se a ferramenta precisar de alt\u00edssima resist\u00eancia \u00e0 abras\u00e3o, <a href=\"https:\/\/aobosteel.com\/pt\/d2-tool-steel\/\">D2<\/a> Ou outro a\u00e7o com alto teor de carbono e cromo pode ser mais adequado. Se a ferramenta precisar de m\u00e1xima estabilidade dimensional em uma forma grande ou complexa, o a\u00e7o de t\u00eampera ao ar geralmente \u00e9 a melhor escolha.\n      <\/p>\n\n    <\/main>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>Precisa de fornecimento em grande quantidade de a\u00e7o ferramenta para t\u00eampera em \u00f3leo?<\/h2>\n        <p>\n          A Aobo Steel fornece barras redondas e barras chatas de a\u00e7o ferramenta O1, O2 e outros a\u00e7os para ferramentas, para grandes encomendas industriais. Envie-nos a especifica\u00e7\u00e3o, o tamanho, a quantidade e a aplica\u00e7\u00e3o desejadas.\n        <\/p>\n      <\/div>\n      <a class=\"aobo-btn aobo-btn-inquiry popmake-16052\" href=\"javascript:void(0);\">Enviar consulta<\/a>\n    <\/section>\n\n  <\/div>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Tool Steel Technical Guide Oil-Hardening Tool Steel: Grades, Properties, Heat Treatment and Applications Oil-hardening tool steel is a family of cold-work tool steels that harden by quenching in oil after austenitizing. In the AISI classification, these steels belong to the Group O series. The main oil-hardening tool steel grades are O1, O2, O6, and O7. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15551,"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":"normal-width-container","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":"disabled","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 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with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Oil-Hardening Tool Steel: Grades, Properties and Uses | AoboSteel<\/title>\n<meta name=\"description\" content=\"Learn what oil-hardening tool steel is, including O1, O2, O6 and O7 grades, key properties, heat treatment basics, applications and grade selection.\" \/>\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\/oil-hardening-tool-steel\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oil-Hardening Tool Steel: Grades, Properties and Uses\" \/>\n<meta property=\"og:description\" content=\"Learn what oil-hardening tool steel is, including O1, O2, O6 and O7 grades, key properties, heat treatment basics, applications and grade 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Steel Technical Guide Oil-Hardening Tool Steel: Grades, Properties, Heat Treatment and Applications Oil-hardening tool steel is a family of cold-work tool steels that harden by quenching in oil after austenitizing. 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