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Compared with the traditional method of machining , EDM method has no macroscopic cutting forces , can process a lot of traditional processing methods are difficult to machine materials , and special structures in many areas with traditional machining methods can not match advantage. SiCp/A1 composite material has a high specific strength and stiffness, high elastic modulus, and very good wear resistance and low thermal expansion coefficient , relatively low cost , low density, good dimensional stability and thermal conductivity , and thus in the aerospace , military and automotive , electronic instrumentation and other industries with great potential . Firstly, by EDM , EDM processing and high-speed small hole EDM wire cutting sample surface morphology and elemental composition analysis and cross-section that is original and brittle material surface comparison and analysis of SiCp / Al composite material erosion EDM mechanism ; right SiCp/A1 composites EDM process were studied in detail , were carried out EDM , EDM processing and high-speed small hole EDM wire cutting test, analysis of various process parameters on the process indexes and enhanced particle volume fraction of the impact on the processing , but also the method of the electrode through the restructuring process has been improved, comparative tests illustrate restructuring electrode has good processing effect ; conducted SiCp / Al composites dimensional EDM milling test, based on the principle of hierarchical milling SiCp / Al composites workpiece machined HIT 3D fonts , milling proposed segmentation method , and to achieve a three-dimensional structure of micro- machining .
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