High-density edge metal alloy die castings, die casting method, die casting device and applications

Abstract

The application discloses a metal alloy die casting with high compact edge, a die casting method, a die casting device and application, and belongs to the technical field of die casting forming. In the edge area of the die casting, the number of pore clusters in each square millimeter is not more than 0.5, the number of pores in each cluster is not more than 3, the average distance of pores outside the cluster is not less than 50 mu m, and the equivalent size of all pores is not more than 0.4 mm. The pores include shrinkage porosity and gas hole type, the number ratio of which is 1: (0.1-0.5), and the proportion of the gas hole type pores is not more than 30%. After the die casting is subjected to anodic oxidation treatment, the color difference DE between the edge and the matrix is less than 0.8. The application solves the problem of anodic oxidation color difference caused by the pore difference between the edge and the matrix of the die casting, guarantees the appearance consistency and structural reliability of the product, and can be used in the fields of high appearance requirements such as consumer electronics and automobiles.

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