Patent Number: 8,574,476

Title: Method of manufacturing expendable salt core for casting

Abstract: A melt is made by heating a salt mixture containing a salt of sodium. The melt is set at a temperature higher than the liquidus temperature of the salt mixture, and poured into a mold for expendable core molding. The temperature when the melt is completely poured into the mold is set within a range not exceeding the liquidus temperature of the salt mixture by 30.degree. C. An expendable salt core for casting is molded by solidifying the melt inside the mold. This makes it possible to more stably obtain the strength of a water-soluble expendable salt core for casting made of a salt cast product obtained by melting and molding salts of sodium and the like.

Inventors: Yamada; Youji (Shizuoka, JP)

Assignee: Buhler AG

International Classification: B22C 9/10 (20060101)

Expiration Date: 1/05/12017