Metal type covered shell casting mold and casting method thereof

Abstract

The invention discloses a metal type covered shell casting mold comprising a metal type body. At leas tone layer of resin sand shell is arranged in the metal type body; the outer surface of the resin sand shell is attached to the inner surface of the metal type body; and an inner pouring cavity anastomotic with a casting piece in shape is arranged in the resin sand shell. The metal type shell casting mold not only is applicable to the pouring of low-temperature alloy, but also can be improved to be applicable to the pouring of a high-temperature alloy material by adopting the resin sand shell, and realizes the continuous production of multiple molds, thereby improving the production efficiency, and solving the problem of not being applicable to thin castings with large areas due to the quickly fast radiating of metal.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a metal mold cladding casting mold and a casting method thereof. Background technique [0002] Regarding casting molds, generally speaking, they can be divided into pure metal molds, ordinary sand molds, and wax molds. Pure metal molds are only suitable for casting low-temperature alloys (melting point below 800 degrees), and cannot be used for pouring high-temperature alloy materials. The cooling speed of the pure metal mold solution is too fast to apply multiple modes at the same time, and the production efficiency is very low; the heat dissipation of the pure metal mold is too fast, and it is not suitable for large-area thin castings, because the metal solution solidifies before flowing into the deep part of the mold; When the high temperature of the solution will cause thermal shock to the pure metal mold, the service life of the pure metal mold cannot be guaranteed; when the...

AI Technical Summary

Problems solved by technology

[0002] Regarding casting molds, generally speaking, they can be divided into pure metal molds, ordinary sand molds, and wax molds. Pure metal molds are only suitable for casting low-temperature alloys (melting point below 800 degrees), and cannot be used for pouring high-temperature alloy materials. The cooling speed of the pure metal mold solution is too fast to apply multiple modes at the same time, and the production efficiency is very low; the heat dissipation of the pure metal mold is too fast, and it is not suitable for large-area thin castings, because the metal solution solidifies before flowing into the deep part of the mold; When the high temperature of the solution will cause thermal shock to the pure metal mold, the service life of the pure metal mold cannot be guaranteed; when the surface of the workpiece requires detailed depiction (word header, pattern), the pure metal mold cannot do it

The biggest feature of ordinary sand molds is that the labor intensity is too large, and the mold needs to be remade every time it is cast. Sand and dust are all over the workshop, and the production environment is extremely harsh. Every time pouring will produce a lot of sand holes, the roughness and precision of castings cannot be guaranteed, and the scrap rate is high.

Finally, for the wax model, its disadvantage is that the process is too complicated, the production cycle is long, and the surface roughness and dimensional accuracy of the casting often fail to meet the requirements

[0003] The above three kinds of molds only have many advantages of pure metal molds, which are suitable for wide application, but based on pure metal molds, they have more shortcomings, so they must be overcome.

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