研究高温处理对Cr12Mo1V1模具钢组织、显微硬度和力学性能的影响。结果表明,随高温处理温度的升高,模具钢组织中的碳化物含量先减小后增大,在1150℃达到最小值11.2%;模具钢的淬火、回火硬度随高温处理温度波动,1130℃时达到最大值。抗拉强度随温度增加先减小后增大,伸长率呈降低趋势。 The effects of high temperature treatment on the microstructure, microhardness and mechanical properties of Cr12Mo1V1 die steel were studied. The results show that with the increase of the temperature, the carbide content in the die steel first decreases and then increases and reaches the minimum of 11.2% at 1150 ℃. The quenching and tempering hardness of the die steel fluctuates with the temperature of the high temperature treatment, and 1130 ℃ to reach the maximum. The tensile strength decreases first and then increases with the increase of temperature, and the elongation tends to decrease.