Micro EDM deposition in air by single discharge thermo simulation
来源期刊：中国有色金属学报(英文版)2011年第z2期
论文作者：WANG Yu-kui XIE Bao-cheng WANG Zhen-long PENG Zi-long
文章页码：450 - 455
Key words：micro EDM deposition; thermo-physical model; FEM; single discharge; micro deposited cylinder
Abstract: A thermo-physical model for micro electric discharge machining deposition process using finite element method (FEM) was introduced. The numerical analysis of the single spark operation of the process was carried out in FEM software ANSYS, considering the Gaussian distribution of heat flux, initial and boundary conditions, and energy distribution of different kinds of tool electrode and workpiece in material. The suitable discharge conditions for the deposition process were predicted from the transient temperature analysis. According to the results from the simulation analysis, a brass micro cylinder with approximately 200 μm in diameter and 1.2 mm in height was deposited on a steel surface, and the deposited material was close packed. The validity of the thermo-physical model and FEM solving procedure were proven through a lot of machining experiments and tests of the deposited material characters.
WANG, Yu-kui1, 2, XIE Bao-cheng1, WANG Zhen-long1, 2, PENG Zi-long1
(1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;
2. Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education,
Harbin Institute of Technology, Harbin 150001, China)
Abstract:A thermo-physical model for micro electric discharge machining deposition process using finite element method (FEM) was introduced. The numerical analysis of the single spark operation of the process was carried out in FEM software ANSYS, considering the Gaussian distribution of heat flux, initial and boundary conditions, and energy distribution of different kinds of tool electrode and workpiece in material. The suitable discharge conditions for the deposition process were predicted from the transient temperature analysis. According to the results from the simulation analysis, a brass micro cylinder with approximately 200 μm in diameter and 1.2 mm in height was deposited on a steel surface, and the deposited material was close packed. The validity of the thermo-physical model and FEM solving procedure were proven through a lot of machining experiments and tests of the deposited material characters.
Key words:micro EDM deposition; thermo-physical model; FEM; single discharge; micro deposited cylinder
