配方类型：	METALS AND THEIR TREATMENT
配方说明：	Foundry Core Wash (U.S. Patent 2,786,771)
配方组成：	Water/To make 100 Flake Graphite/46.5-65.0 Calcium Oxide/21-30 Soda Ash/1-5 Magnesium Oxide/2.6-4.0

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