锻压技术

基于ANSYS的H13钢热处理对凸模疲劳断裂的影响

英文标题：Influence of heat treatment of steel H13 on punch fatigue fracture based on ANSYS

作者：高超平冯再新苏晓波马子超

单位：中北大学

关键词：ANSYS H13钢疲劳断裂热处理

分类号：

出版年,卷(期):页码：2016,41(4):122-125

摘要：

通过ANSYS有限元分析软件，预测了H13钢凸模疲劳寿命为21520次、疲劳使用系数为0.420008，该方法缩短了实际生产设计的周期。通过热处理试验，分别得到了不同淬火硬度、回火硬度与温度的关系曲线。当淬火温度为1050 ℃时，模具开裂少、硬度适中。当回火温度为550～650 ℃时，凸模硬度为42～45 HRC，凸模性能良好。生产验证结果表明，采用优化后的热处理工艺，凸模寿命大幅提高，疲劳寿命由3000次增加到6000次以上，当模具工作一定时间后，进行低温回火消除内应力，模具疲劳寿命基本上可以保持在8000次。

Through the ANSYS finite element analysis software, the fatigue analysis of steel H13 was predicted as 21520 times under fatigue coefficient of 0.420008, and the period of the actual production design was shortened. The relationship curves of quenching hardness, tempering hardness and temperature were obtained respectively by means of heat treatment test. When the quenching temperature was 1050 ℃, the mould cracked less and yielded proper hardness. When the temper temperature is 550-650 ℃ and the hardness of the die is 42-45 HRC，the performance of punch is good. The actual production shows that with optimized heat treatment, the service life of the mould is greatly improved, and the fatigue life increases from 3000 times to more than 6000 times. After working for a period of time, the internal stress of punch can be eliminated by low tempering, and its fatigue life can be maintained up to 8000 times.

基金项目：

山西省科技攻关资助项目（20120321035-04）

高超平（1990-），男，硕士研究生

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