Casting process of marine copper alloy kingston valve pressure-bearing valve body

The invention provides a casting process of a marine copper alloy kingston valve pressure-bearing valve body, which comprises the following steps: S1, designing a side horizontal bottom pouring type pouring system which comprises an upper sand mold and a lower sand mold which are symmetrically arranged; s2, a mold of a pouring system is prepared from aluminum alloy, resin sand is adopted as core sand, green sand is adopted as molding sand, a copper alloy chilling block made of the same material as a pressure-bearing valve body is arranged at the local position of a lower sand mold, and the upper sand mold and the lower sand mold are combined into a whole after preheating and drying to prepare a sand mold for casting; s3, weighing the pure metal material and the alloy foundry returns, and putting the pure metal material and the alloy foundry returns into an electric induction furnace to obtain an alloy melt; and S4, the alloy melt is poured, and after the alloy melt is cooled to the room temperature, a marine