作　　者： ; ; ; ; ;

机构地区： 南京航空航天大学机电学院

出　　处： 《电加工与模具》 2011年第6期37-40,共4页

摘　　要： 为了定量研究微能放电电蚀量与电极极性和放电能量的关系,根据热传导基本理论和微能放电的实际情况,建立微能放电热传播模型,借助ANSYS分析软件,对微能放电中正负两极的单脉冲放电温度场进行了数值模拟;然后采用两根直径20μm且互相垂直的钨丝进行侧面放电,测量正负两极放电凹坑直径和深度并分别计算其电蚀量,验证仿真结果的正确性。 In order to find the relationship between the material removal and electrical parameters in micro electrical discharge machining, on the basis of micro electrical discharge process and heat transfer theory, the heat propagation model of electrodes is established. And the temperature distribu- tion of anode and cathode with single pulse discharge is simulated respectively by using ANSYS. Two vertically placed 20 micro diameter Tungsten wires have been chosen to be electrodes of which sparking occurs from the sides of them. The material removal of spark erosion has been studied according to the image of SEM. It is demonstrated that the experimental results are basically in accord with the theoretical analysis.

关 键 词： 微能放电 温度场分布 数值模拟 电蚀量

领　　域： [金属学及工艺]