3785| 5
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關(guān)于正火+回火 |
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點(diǎn)評(píng)
如果對(duì)應(yīng)力很敏感、要求高,當(dāng)然回火早好,不過(guò)一般正火都是毛坯件或原料,因此初加工后再回火。鍛件可以問(wèn)下相關(guān)高人
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