高硅铝合金电火花加工过程的温度场仿真研究

Temperature Field Simulation Research of High Silicon Aluminum Alloy During EDM Process

热流产生的温度场是影响材料蚀除的最主要因素。为了研究高硅铝合金电火花加工过程中,极间电压、放电电流和脉冲宽度对温度场分布的影响规律,通过ANSYS软件对温度场进行仿真研究,进一步结合改进的球缺计算公式分析极间电压、放电电流和脉冲宽度与电加工蚀坑的深度、半径及体积的关系。通过仿真和分析得知,极间电压、放电电流和脉冲宽度均与温升存在正相关的关系,其中电流的影响作用较突出。仿真结论为研究高硅铝合金的电火花加工机理提供一定的理论指导,也可作为实际的电火花加工参数的选择参考。

Temperature field produced by heat flow is the most important factor affect material erosion. In order to study the influence of interelectrode electrodes,discharge current and pulse width on temperature field distribution in EDM of high silicon aluminum alloy,the simulation model of temperature field was established by ANSYS simulation software and the research was carried out. The calculation of spherical defect was further combined with the calculation of spherical defect. The relationship between the depth,radius and volume of etching pits and the interelectrode electrodes,discharge current and pulse width is analyzed. Through simulation and analysis,it is found that there is a positive correlation between temperature rise and interelectrode electrodes,discharge current and pulse width,among which the effect of current is more prominent. The simulation results can provide some theoretical guidance for the study of EDM mechanism of high silicon aluminum alloy,and can also be used as a reference for the selection of actual EDM parameters.