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采用不同的工艺对3Cr2Mo模具钢进行热处理,研究了淬火温度、回火温度以及回火时间对3Cr2Mo模具钢硬度和冲击韧度的影响。结果表明,冲击韧度满足使用要求的3Cr2Mo模具钢的最佳热处理工艺为900℃淬火,600℃回火3 h。
3Cr2Mo die steel was heat-treated by different technologies. The effects of quenching temperature, tempering temperature and tempering time on hardness and impact toughness of 3Cr2Mo die steel were studied. The results show that the best heat treatment process of 3Cr2Mo die steel with impact toughness is 900 ℃ quenching and 600 ℃ tempering for 3 h.