关键词: 聚晶金刚石复合片, 正交试验, 工艺优化

Abstract: In order to satisty the requirements of making the surface of polycrystalline diamond compact after finishing bright and clean,like mirror surface,based on the orthogonal test method,it is to optimize polycrystalline diamond compact finishing process parameters combination,using the method of range analysis to process data,and draw test index and the relationship between each experimental factor graph to obtain the influence degree of various factors on the surface roughness value,and as a basis for optimization parameters,optimizing the parameters of polycrystalline diamond compact process optimization research.Research showed that the rotation speed and the finishing time put greater impact on the working surface quality,and the influence degree of various factors on the surface roughness size in order from large to small is:polishing disk rotational speed,the time,the polishing pressure,and the polishing liquid abrasive granularity.Using the optimized processing test for the optimal process parameters combination,when lapping and pressure is 90 kPa,polishing disk rotational speed of 1 200 r/min,polishing liquid abrasive particle size is 1 μm,and polishing time for 30 min,got the quality of the surface roughness Ra is 0.019 μm surface,mirror surface treatment effect (Ra<0.02 μm)was realized.

Key words: Polycrystalline Diamond Compact （PDC）, orthogonal test, process optimization