In addition to the requirement of high compressive strength and ductility of the filling mold in the work of precision machining mold parts, its surface characteristics are particularly important for the working characteristics and service life of precision machining mold parts. The improvement of this kind of characteristics, simply relying on the improvement and improvement of the raw materials of the base material is very limited, and it is not economical development, but according to the technology of metal surface treatment, it is usually possible to get the actual effect of getting twice the result with half the effort, which is also more of the metal surface Due to the rapid development trend of processing technology. Die polishing technology is a key component in the metal surface treatment of abrasive tools, and it is the key processing technology of the post-processing process in the whole process of die processing. Because there are still some problems in the polishing production process of grinding metal stamping parts in China and the raw materials and plastic container materials, such as injection molds for point-and-shoot camera lenses, CD, VCD discs and special tools with high definition requirements are still quite large. A tungsten carbide mold is partly imported.