TiC/Ni金属陶瓷电火花加工温度场仿真研究  

Study on Temperature Filed Simulation During Electro-discharge Machining of TiC/Ni Cermet

作　　者：冯业瑞[1] 郭永丰[1] 李宗峰[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001

出　　处：《电加工与模具》2016年第2期1-5,14,共6页Electromachining & Mould

基　　金：国家自然科学基金资助项目(51275110);哈尔滨科技创新人才项目(2015RACXXJ026)

摘　　要：为深入研究TiC/Ni金属陶瓷电火花加工过程,进行了TiC/Ni金属陶瓷电火花加工单脉冲放电温度场仿真。建立了TiC/Ni金属陶瓷颗粒随机分布模型,运用ANSYS软件采用生死单元法对TiC/Ni金属陶瓷进行单脉冲温度场仿真研究,并对结果进行了实验验证。结果表明:TiC/Ni金属陶瓷颗粒随机分布模型适于TiC/Ni金属陶瓷电火花加工温度场仿真,且随着峰值电流及脉宽的增大,TiC/Ni金属陶瓷蚀除体积增加,表现为试验时材料蚀除率增加。To study electro-discharge machining（EDM） process of TiC/Ni cermet,the temperature field simulation of single pulse EDM of TiC/Ni cermet was carried out,the randomly distribution model of TiC/Ni cermet particles was established. The single pulse temperature field was simulated using birth-death element method based on ANSYS software. Experimental results verify that the model is suitable for EDM temperature field simulation of TiC/Ni cermet. The results also show that with increase of peak current and pulse-on time,due to increase of material removal rate,material removal volume of TiC/Ni cermet increase.

关 键 词：电火花加工 温度场仿真 颗粒随机分布模型 生死单元法 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]