Surface treatment method of die casting and die casting

Abstract

The invention provides a surface treatment method of a die casting and the die casting. The surface treatment method comprises the steps of carrying out pre-electroplating treatment on the surface of the die casting to form an electroplated coating, and covering and filling surface defect positions of the die casting with the electroplated coating; carrying out polishing treatment on the electroplated coating on the surface of the die casting till the surface of the electroplated coating is flat and uniform; and carrying out surface decoration treatment on the polished electroplated coating, so as to obtain a die casting outer surface which meets the application requirement. According to the technical scheme provided by the invention, appearance pit defects like pores, sand holes and pin holes in the surface of the die casting are overcome, and deformation and chromatic aberration of a die casting product are avoided.

Description

technical field [0001] The invention relates to the field of metal casting technology, in particular to a surface treatment method of a die casting and the die casting. Background technique [0002] With the arrival of the trend of metallization of electronic products, die castings are more widely used. The die-casting process involves the melting, injection, and solidification of alloys in the mold. As a result, various die-casting parts obtained by die-casting have appearance defects such as pores, sand holes, and pinholes on the surface after polishing, which in turn affects the die-casting parts as high-end appearance parts. usage of. [0003] At present, in order to solve the above defects, the following methods are mainly adopted: 1. Hot-dip plating method; for small die-casting parts, hot-dip plating will cause product deformation and affect subsequent processing and assembly of the product. At the same time, for metastable amorphous alloys with high heat sensitivit...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for treating the surface of a die-casting part and a die-casting part, which a

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