镁合金板温成形过程模具圆角部位摩擦系数的实验研究  

Experimental Study on Friction Coefficient in Die Corner During Warm Forming of Magnesium Alloy Sheet

作　　者：郭正华[1] 贺荣[1] 郭吉萍[1] 李志刚[2] 

机构地区：[1]轻合金加工科学与技术国防重点学科实验室,南昌航空大学材料科学与工程学院,江西南昌330063 [2]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《热加工工艺》2008年第15期17-21,共5页Hot Working Technology

基　　金：华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目(07-02:2007.5~2009.4)

摘　　要：利用自行研制的新型摩擦测试装置,对镁合金板温成形过程模具圆角部位摩擦系数进行了测试实验。通过正交实验,研究了温度、压边力、润滑状态等三种工艺参数对模具圆角部位摩擦系数的影响,并采用统计方法对所得到的数据进行了分析,确定了影响摩擦系数的主次关系和最优工艺参数组合。研究结果表明:三种工艺参数中,温度因素的影响最为显著,压边力因素影响一般,而润滑因素影响最小;最优工艺参数组合为温度240℃、压边力3MPa和二硫化钼润滑。Based on newly developed tribotest device, the friction coefficient in die comer during warm forming of magnesium alloy sheet was tested. By the orthogonal experiments, the influence of three processing parameters including temperature, blankholding force and lubrication condition on the friction coefficient was studied, and the obtained experimental data was analyzed by statistical approach. The relationship between the parameters and the friction coefficient as well as the optimization of the processing parameters were determined. The study results show that in three processing parameters, temperature is the most significant factor, the blankholding force is second, and the lubrication condition is least. The optimization of processing parameter is temperature 240 ℃, blankholding force 3 MPa and molybdenum disulphide lubricant.

关 键 词：镁合金板 温成形 正交实验 模具圆角 摩擦 

分 类 号：TG115.58[金属学及工艺—物理冶金]