基于正交试验汽车六角螺母冷挤压模具磨损规律分析及优化  

Process Analysis and Optimization on Die Wear in Cold Extrusion for Vehicle Hex Nut

作　　者：范建祥 程道来 倪伟豪 FAN Jianxiang, CHEN Daolai, NI Weihao(School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Chin)

机构地区：[1]上海应用技术大学机械工程学院,上海201418

出　　处：《铸造技术》2018年第4期929-932,共4页Foundry Technology

摘　　要：以某汽车用六角螺母为例,对实际生产中碰到的模具下冲头磨损较快问题进行分析,得到影响下冲头磨损的4个主要因素:冲压速度、模具表面硬度、入模圆角半径和摩擦系数。设计四水平三因素正交试验,基于Archard磨损理论,采用有限元分析软件DEFORM-3D进行模拟分析,以下冲头最小进行多次模拟试验。结果表明,最优冲压速度为3 mm/s,表面硬度为63 HRC,入模角度为9°,摩擦系数为0.15。其中,冲压速度对下冲头磨损影响最为显著。Taking the car hex nuts as an example, four main factors of punch wear under the influence of the punching of the mold under the actual production were analyzed. The punching speed, the hardness of the mold surface, the fillet radius and the friction coefficient were obtained. Based on the theory of Archard wear, the finite cloud analysis software DEFORM-3 D was used to simulate and analyze the following tests. The results show that the optimum punching speed,surface hardness, mold angle, and friction coefficient are 3 mm/s, 63 HRC, 9 degrees, and 0.15, respectively.

关 键 词：冷挤压成型 磨损 正交试验 有限元模拟 

分 类 号：TG385[金属学及工艺—金属压力加工]