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研究了淬火温度、回火温度对钢的强度、硬度、塑性和冲击韧性的影响,试验结果表明:塑料模具钢的最佳预硬化处理工艺应为:850~870℃空或油淬,600~650℃×2 h回火。
The effects of quenching temperature and tempering temperature on the strength, hardness, ductility and impact toughness of the steel were studied. The results show that the best precure treatment process of plastic mold steel should be: air or oil quenching at 850 ~ 870 ℃, 650 ℃ × 2 h tempering.