Method for manufacturing casting blank of refrigerator inner container die by using lost foam casting process

Abstract

The invention discloses a method for manufacturing a casting blank of a refrigerator inner container die by using a lost foam casting process, and relates to the technical field of die manufacture. The method comprises the following steps of: three-dimensional modeling, module segmentation, foam processing, module adhesion, coating immersion, model drying, embedded compaction, molten aluminum pouring, vacuum negative pressure, normal-temperature cooling, un-boxing and clearing to obtain the casting blank of the refrigerator inner container die. The casting die has short blank casting period, the natural shape wall thickness of the die is accurate, the casting is light in weight, the labor intensity of a worker is low, the production efficiency is high, and the labor cost and the manufacturing cost are reduced; and the method is an energy-saving and environment-friendly 'green' project.

Description

Technical field: [0001] The invention relates to the technical field of mold manufacturing, in particular to a method for manufacturing a mold blank of a refrigerator liner by using a lost foam casting process. Background technique: [0002] The existing refrigerator liner mold casting is all sand casting. Firstly, the inner and outer wooden molds are made according to the drawings and casting requirements, and the inner and outer wooden molds are respectively placed in clay sand to obtain the same clay sand inner mold and clay mold as the wooden mold. After the sand mold and clay sand mold are dried, the clay sand mold is closed and the smelted aluminum solution is injected. After the aluminum solution is fully solidified, the mold blank is removed for deburring and sand cleaning. Due to the complex shape of the refrigerator liner mold, the quality requirements are high, the quantity is single, and there are many varieties. This has caused a series of disadvantages such as...

AI Technical Summary

Problems solved by technology

This has caused a series of disadvantages such as long production cycle of wooden molds, insufficient precision, high consumption of raw materials, serious environmental pollution, high labor intensity, difficult operation technology, heavy castings, poor surface quality, and large follow-up workload.

However, the foam material of the lost foam model has low strength, low hardness, and light weight, which can easily cause damage and deformation of the lost foam model during the production and modeling processes, so no one uses the lost foam casting process when casting refrigerator inner tank molds

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