Casting method for fusing metal gridding reinforcing body and a metal matrix

Abstract

The invention provides a casting method for fusing a metal gridding reinforcing body and a metal matrix. The casting method comprises the following steps of fixing reinforcing bodies (1) by using metal grids (2); mounting the reinforcing bodies (1) in corresponding positions of a foam mould; injecting pre-foamed foam beads in the foam mould to obtain a bright and clean foam mould with reinforcing body metal grids; accurately positioning the reinforcing bodies (1); uniformly coating foam mould clusters by using foam mold casting coatings; performing vibratory modeling on the foam mould clusters in a casting sand box; connecting a vacuumizing system to the casting sand box; pouring qualified smelted liquid metal on the foam mould; performing vacuumizing while pouring; and taking out the foam mould after cooling down the foam mold so as to obtain a casting on which the reinforcing bodies (1) are fused at accurate surface positions of the metal matrix. By the casting method, the reinforcing bodies (1) can be accurately positioned and uniformly distributed on the casting of the metal matrix; after the metal grids (2) and the metal matrix are fused, a transitional layer is formed; the reinforcing bodies (1) can be firmly fused with the metal matrix; the yield of products is improved; the cost is effectively reduced; and the quality of products is guaranteed.

Description

technical field [0001] The invention discloses a casting method for fusion of a metal grid reinforcement body and a metal base, in particular to a casting method for positioning a reinforcement body and metal base fusion by using a metal grid, and belongs to the field of casting. Background technique [0002] The traditional method of covering a layer of special-purpose reinforcements (such as wear-resistant and corrosion-resistant materials) on the surface of the casting or at a specific position is to place the reinforcement in the reserved cavity of the foam mold or powder-coat the reinforcement on the surface of the casting. The reserved position of the foam mold is pasted with adhesive. After the foam mold is solidified, it is directly molded and poured in the sand box. The whole system maintains a certain negative pressure. Under the high temperature of the molten metal, the foam mold gasifies and disappears, and the molten metal is filled Cavity, the reinforcing body ...

AI Technical Summary

Problems solved by technology

[0002] The traditional method of covering a layer of special-purpose reinforcements (such as wear-resistant and corrosion-resistant materials) on the surface of the casting or at a specific position is to place the reinforcement in the reserved cavity of the foam mold or powder-coat the reinforcement on the surface of the casting. The reserved position of the foam mold is pasted with adhesive. After the foam mold is solidified, it is directly molded and poured in the sand box. The whole system maintains a certain negative pressure. Under the high temperature of the molten metal, the foam mold gasifies and disappears, and the molten metal is filled Cavity, the reinforcing body is consolidated on the required position on the casting surface. This method is simple and low in cost, but it cannot solve the problems of floating, sinking, agglomeration, uneven distribution and accurate positioning of the reinforcing body. The scrap rate is high. Due to gravity or The effect of buoyancy, especially the sinking, floating, and accumulation of large particle reinforcements, cannot be solved, and the consolidation strength of reinforcements in castings is poor

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