不同热处理工艺对模具钢的组织及性能研究

Influence of Heat Treatment Conditions on Microstructures and Mechanical Properties of Die Steel

以模具钢为对象,分析不同的淬火和回火温度对其微观组织、硬度和耐磨性的影响。结果表明,随着淬火温度的升高,试验钢硬度先升高后降低,在1 100℃时取得最大值。随着回火温度的升高,试验钢硬度增大,当回火温度为560℃时,试验钢的硬度和耐磨性最高。试验钢最优的热处理工艺为:1 100℃油淬火后进行560℃×2 h回火。

Taking die steel as the object, the influence of quenching and tempering temperatures on the microstructures, hardness and wear resistance of test steel was analyzed. The results show that, when increasing quenching temperatures, the hardness of test steel increase with the largest hardness when quenched at 1 100 ℃. By rising tempering temperatures, the hardness of the steel increase, when tempered at 560 ℃, the steel has the maximum hardness and wear resistance. The best heat treatment condition is： 1 100 ℃ quenching in oil and followed by 560 ℃ tempering of 2 h.