公开(公告)号：US4925492A

公开(公告)日：1990-05-15

申请号：US99080

申请日：1987-09-21

申请人： Anant H. Kelkar ,  Frank A. Capodicasa ,  Jerry G. Weinstein

发明人： Anant H. Kelkar ,  Frank A. Capodicasa ,  Jerry G. Weinstein

IPC分类号： B22C9/10 ,  C04B35/48 ,  C04B35/632 ,  C04B35/634 ,  C04B41/52

CPC分类号： C04B35/63472 ,  B22C9/10 ,  C04B35/481 ,  C04B35/6325 ,  C04B35/634 ,  C04B41/009 ,  C04B41/52

摘要： A fired ceramic core for use in aluminum investment casting, which will withstand steam autoclaving and which may be rendered water disruptible; comprising from about 20 to 50% by weight of one or more water soluble salts, together with inert ceramic fillers selected to meet desired thermoexpansion compatability for the shell with which said core is to be used; said core being vacuum impregnated with ethyl silicate and a cured phenolic resin.

摘要翻译： 用于铝熔模铸造的烧制陶瓷芯，其将经受蒸汽高压灭菌并且可能使水破裂; 包括约20至50重量％的一种或多种水溶性盐，以及惰性陶瓷填料，其被选择以满足用于所述芯的壳的期望的热膨胀相容性; 所述芯被真空浸渍硅酸乙酯和固化的酚醛树脂。