摘要
以车用铝合金防护罩为研究对象,针对成形过程中的模具磨损问题进行了研究。首先,基于Archard修正模型,采用Deform-3D软件对热锻过程进行了建模仿真,分析了凸凹模的磨损情况,出现了凹模磨损远大于凸模磨损的现象;其次,以坯料温度、模具温度、凹模硬度、锻压速度以及摩擦因数为研究因素,进行了正交试验仿真,并以凹模的磨损深度及凹模承受的载荷为优化目标,采用加权分析法结合极差分析法,获得了最佳锻造工艺参数组合,结果显示优化后的凹模的寿命提高了50.9%;最后,通过生产试验对模拟结果进行了验证,验证结果表明凹模的实际寿命与模拟结果较为接近,有限元模拟能应用于模具寿命的研究。
For the automobile aluminum alloy protective cover, the mold wear problem in the forming process was studied. Firstly, based on the Archard modified model, the hot forging process was modeled and simulated by software Deform-3 D, the wear conditions of punch and die were analyzed, and the wear of die was much greater than that of punch. Secondly, taking billet temperature, mold temperature, die hardness, forging speed and friction factor as the research factors, the orthogonal test simulation was carried out. Furthermore, taking the wear depth of die and the load on the die as the optimization objectives, the optimal combination of forging process parameters was obtained by the weighted analysis method combining with range analysis method. The results show that the service life of the optimized die is increased by 50.9%, and the simulation results are verified by production tests, showing the actual life of the die is close to the simulation results. Thus, the finite element simulation can be applied to study the life of mold.
作者
罗海英
陈海军
Luo Haiying;Chen Haijun(College of Automotive Engineering,Guangxi Institute of Transportation Vocational and Technical College,Nanning 530023,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2022年第4期212-217,共6页
Forging & Stamping Technology
基金
“广西职业教育汽车运用与维修技术专业群发展研究基地”项目支持(桂教职成(2018)37号)。
关键词
模具磨损
模具温度
凹模硬度
锻压速度
加权分析法
die wear
mold temperature
die hardness
forging speed
weighted analysis method
