摘要
针对凸缘叉热锻成形终锻上模开裂的问题,通过建立刚粘塑性有限元模型,使用数值模拟方法,根据实际生产情况模拟了凸缘叉热锻成形过程。研究了金属流动规律,分析了模具应力较大的原因。根据模拟,优化了模具结构和锻压方式。结果表明,模具开裂位置拉应力降低约400 MPa,达到了工艺优化的目的。
Aiming at problems of the finish forging top die cracking in the hot forging flange fork, through the establishment of a rigid viscoplastic finite element model and according to the actual production situation, hot forging forming process of flange forks was simulated by using a numerical simulation method. The flow law of metal was studied. The causes of large die stress were analyzed. The die structure and forging method were optimized according to the simulation. The results show that tensile stress in die cracking position is reduced by about 400 MPa, which achieves purposes of process optimization.
出处
《热加工工艺》
CSCD
北大核心
2015年第3期135-136,140,共3页
Hot Working Technology
基金
上海市高校与上海中小企业产学合作项目(12QY20)
上海工程技术大学研究生科研创新资助项目(13KY0518)
关键词
凸缘叉
数值模拟
热锻模具
工艺优化
flange fork
numerical simulation
hot forging die
process optimization
