超高强钢板冲压模具磨损CAE分析研究与应用  

Research and Application of Die Wear CAE Analysis of Ultra High Strength Steel Stamping

作　　者：谢晖[1] 李江曼[1] 王诗恩 褚卫东 王东福 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082 [2]上海拖拉机内燃机有限公司,上海杨浦200433

出　　处：《湖南大学学报（自然科学版）》2015年第8期15-21,共7页Journal of Hunan University:Natural Sciences

基　　金：国家科技支撑计划资助项目(2012BAF12B20);国家高技术研究发展计划(863)资助项目(National'863'Project);2013长沙市科技计划重点资助项目(K1308116-11);2013湖南省科技支撑计划重点资助项目(2014GK4015)

摘　　要：针对超高强钢板冲压模具的磨损问题,提出一种有效而快捷的预测模具磨损量和使用寿命的方法.该方法采用Archard磨损理论,得到冲压成型结束后模具的磨损区域主要集中在模具圆角处.系统地研究了模具硬度、冲压速度和模具材料对模具磨损程度的影响.结果表明：模具硬度达到60~65HRC时能有效减小磨损量;模具磨损量与冲压速度成正相关关系.采用磨损累积法预测模具修模前的使用寿命,模拟得到的冲压7 500次的模具磨损量与试验数据仅相差1.47%,表明该方法是正确可行的.这对于确定合理的冲压工艺方案和模具结构设计具有重要的实用价值.Aiming at the die wear problem of ultra high strength steel stamping forming,an effective and fast method was proposed for predicting die wear and working life.The method adopted Archard wear theory in order to obtain mould wear data after stamping forming.Die wear was mainly concentrated in the die round corners.The factors affecting die wear were analyzed systematically.These factors include die hardness,stamping speed and die material.The results showed that the die wear decreased effectively when the die hardness reached 60 ~ 65 HRC.The die wear was positively correlated with the stamping speed.Wear cumulation method was used to predict the service life of die,which had stamped 7500 times. the difference between die wear calculated by simulation and test data was only 1.47%,which showed that the method was feasible.The method has an important practical value in determining reasonable stamping process and designing die structure.

关 键 词：Archard理论 数值模拟 超高强钢 冲压 模具磨损 

分 类 号：TG76[金属学及工艺—刀具与模具]