Resulting composite sheet deformation of the sequence after processing has brought great difficulties

A large area of ​​polycrystalline diamond with high hardness, high wear resistance, high utilization of materials can, in the automotive, aerospace, wood processing, oil industry, geological drilling, electronic industry and other fields are widely used, but it is also a great difficulty of processing . The most effective method is to discharge  abrasive wheels , the material removal rate was 12.56 mm3/min. Since the discharge channel during processing with high temperature and pressure, after processing of polycrystalline diamond surface residual stress inevitably, resulting deformation of the composite sheet, after the sequence of machining led to great difficulties, thus seriously affecting the composite sheet the processing quality. Therefore, studying a large area polycrystalline diamond compact EDM grinding process  polycrystalline diamond  field and residual stress distribution, to reveal the EDM grinding mechanism and to improve the quality of products is important. At present, many domestic and foreign scholars on the single pulse EDM  Diamond blade  and stress field in a lot of research, but the actual processing is continuous pulse, so the simulation results with the actual situation is still some distance away, this paper studies EDM mechanism, based on the initial spark for polycrystalline diamond compact continuous pulse discharge grinding process workpiece surface temperature field, stress field distribution and the deformation of the workpiece material were simulated and analyzed.