Surface sand blasting method for die casting mold

Abstract

The invention relates to a surface sand blasting method for a die casting mold. The method is characterized by comprising the following steps of: firstly, after the manufacture of a mold core of the die casting mold is finished, placing the mold core into a sand blasting machine, and protecting an area which is not subjected to sand blasting; secondly, loading sand blasting particles with the diameters of 0.1 to 0.3mm into the sand blasting machine to get ready for sand blasting; thirdly, performing sand blasting on the mold core of the die casting mold by using the sand blasting machine; fourthly, removing the protection over the mold core of the die casting mold; and finally, placing the mold core subjected to the sand blasting into a mold frame to finish the sand blasting of the mold. Therefore, the inner cavity plane of the mold (the outer plane of a product) can be effectively subjected to sand blasting treatment (etching), and the surface of the product molded by the mold subjected to the sand blasting has a frosted effect which is the same as that achieved by performing the sand blasting on the surface of the product. In addition, the mold core can be protected from being quickly eroded, so that the abrasion resistance of the mold can be enhanced, and the service life of the mold is further prolonged.

Description

technical field [0001] The invention relates to a mold processing method, in particular to a sandblasting method on the surface of a die-casting mold. Background technique [0002] In the existing die-casting production process, flat-shaped die-castings often have watermarks and cold seals on their appearance, which greatly affects the appearance quality of the product. At the same time, some deep cold seal lines are often not accepted by buyers, and the quality of the products will not be guaranteed. This increases the selection steps. Moreover, the products with water mark spots and cold screen patterns must be eliminated by sandblasting. As for this common phenomenon, it is often that all die-casting parts need to be sandblasted throughout the process, which increases the complexity of the process, slows down the work efficiency, and increases the manufacturing cost. Contents of the invention [0003] The object of the present invention is to provide a sandblasting m...

AI Technical Summary

Problems solved by technology

For this common phenomenon, it is often that all die castings require sandblasting for the entire process, which increases the complexity of processing, slows down work efficiency, and increases manufacturing costs.