气中微细电火花沉积温度场的数值模拟与分析

Numerical Simulation and Analysis of Temperature Field for Micro EDM Deposition in Gas

对气中微细电火花沉积过程的温度场进行研究,能为提高工件或产品的加工质量和优化工艺参数提供可靠依据。由于试验无法获取完整的温度数据,数值模拟法便成为研究该问题的一种有效手段。通过建立该温度场的模型并进行模拟计算,获得和分析了沉积过程的温度场及温度随时间变化的曲线,探讨了温度场分布的影响因素和温度随时间变化的特性。模拟结果与已有文献计算结果相符,分析结果与材料硬度测试结果相符,说明了该方法的正确性。

Temperature field for micro EDM deposition in gas can provide a reliable basis for im- proving the processing quality of workpieces or product and optimizing process parameters. Complete temperature data can not be obtained through experiment, so numerical simulation is an effective meth- od to study this matter. Through building and simulating the temperature field model, then the depo- sition process temperature field and temperature versus time curve are obtained and analyzed. Discuss- ing the influencing factors of temperature field distribution and the characteristics of temperature versus time. Simulation results are consistent with previous literature and test results, and analysis results are consistent with hardness test results, that show the accuracy of this method.