The invention relates to a molding method of coated sand. The method is to inject coated sand raw materials into the core through a core shooting machine, and the overall temperature reaches 350 ℃

In the mold forming mold at ~ 450 ℃, the open coated sand mold at both ends integrating the core and the surrounding side walls is made, and the end covers of the prefabricated mold are glued at the open positions at both ends of the mold. In the above mold, the molding and curing time of the coated sand mold is between 30 seconds and 50 seconds. The coated sand mold provided by the invention has the advantages of accurate size, smooth mold surface, short production cycle, high benefit, no pollution, small sewage discharge, environmental protection, etc.

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