摘要
以汽车发动机支架为研究对象,为减少其加工时的坯料,结合数值模拟结果,提出了3种方案,确定了减少原坯料体积的15%为最优方案,并在此基础上进行正交试验,对优化后的坯料进行工艺参数的优化。结果表明,坯料的大小对折叠的产生有着重要的影响。综合折叠角大小、模具载荷及应力分布等因素,确定了最佳工艺参数。当压力机工作速度为85 mm·s^-1、坯料半径为90 mm、坯料初始温度为420℃、摩擦系数为0.3时,锻件成形质量较好。通过实际生产验证获得了符合要求的产品。
Taking the automobile engine bracket as the research object,in order to reduce the blank when processing,three schemes were proposed according to numerical simulation result,and the optimized plan with 15% reduction of the original blank volume was determined. And on this basis,the orthogonal experiment was established to optimize the process parameters of the optimized blank. The results show that the size of blank has a major effect on the folding. The best process parameters were determined with the combination of folding angle,mold load and stress distribution and other factors. When the working speed of the press is 85 mm·s^-1,the concave cavity radius is 90 mm,the blank initial temperature is 420 ℃,the friction coefficient is 0. 3,the forging forming quality is better. Through the actual production verification,the qualified product was obtained.
作者
薛丹丹
董万鹏
吕弘毅
王傲寒
Xue Dandan, Dong Wanpeng, Lyu Hongyi, Wang Aohan(School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, Chin)
出处
《锻压技术》
CAS
CSCD
北大核心
2018年第3期17-21,共5页
Forging & Stamping Technology
基金
中京锻压锻件CAD/CAE设计项目资助(E4-6000-15-0256)
关键词
发动机支架
体积优化
工艺参数优化
数值模拟
正交试验
engine bracket
volume optimization
optimization of process parameters
numerical simulation
orthogonal test
