A kind of die-casting processing technology and die-casting part

Abstract

The invention relates to the technical field of die cast metal, in particular to a die casting machining technique and a die casting. The machining technique comprises the steps of preprocessing, i.e., structures which are not needed by appearance requirements are removed from the die casting; stress eliminating, i.e., residual stress of the die casting is eliminated through heating; shaping, i.e., the flatness of the die casting is controlled within 0.25 mm through cooperation of hot shaping and cold shaping; surface processing, i.e., a black film and waste residues on a surface layer are removed through CNC; and polishing, i.e., the surface of the die casting is polished to further remove surface defects. The die casting is obtained through the die casting machining technique. The preprocessing, stress eliminating, CNC shaping, surface processing and polishing techniques are used for solving the problems that in the prior art, forming time is too short, the outmost layer of a product is the most compact, the shorter the distance between the portion of the product and the center, the poorer the solidification effect is, and the larger the stress is, the more serious the defects such as air holes / cold materials are. Processed die casting metal parts have no impurity, black skin, air hole, pressure point and other defects, and have better pressure bearing performance.

Description

technical field [0001] The invention relates to the technical field of die-casting metals, in particular to a die-casting processing technology and die-casting parts. Background technique [0002] Die-casting is a kind of pressure-casting part. It uses a pressure-casting mechanical die-casting machine equipped with a casting mold to pour liquid copper, zinc, aluminum or aluminum alloy into the feed port of the die-casting machine, and passes through the die-casting machine. Die casting, casting copper, zinc, aluminum parts or aluminum alloy parts of the shape and size limited by the mold, such parts are usually called die castings. [0003] Since metal copper, zinc, aluminum and aluminum alloys have good fluidity and plasticity, and the casting process is cast in a pressure die-casting machine, aluminum die-castings can be made into various more complex shapes, and can also be made into high-quality shapes. The accuracy and smoothness of the castings are greatly reduced, wh...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a die-casting processing technology, which is used to solve the problem that the molding time of the prior art is too short, the outermost metal of the product is the densest, the further inward, the worse the solidification effect, and the more serious defects such as pores / cold material Problems, so that the processed die-casting metal parts are free of impurities, black skin, pores, pressure points and other defects, and have better pressure-bearing performance

Images