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为了提高5CrMnMo热锻模具的使用寿命,对5CrMnMo钢在不同热处理条件下的断裂韧性(δ_m)和予裂纹高温系列冲击韧性进行了试验研究,测定了脆性转变温度,提出了合理的淬火回火温度和模具使用前的预热温度.
In order to improve the service life of 5CrMnMo hot forging dies, the fracture toughness (δ_m) and high temperature impact toughness of pre-cracked 5CrMnMo steel under different heat treatment conditions were studied. The brittle transition temperature was measured and the reasonable quenching and tempering temperature And mold preheat temperature before use.