CASTING OF INTERNAL COMBUSTION ENGINE CYLINDER BLOCK AND METHOD FOR MAKING IT Russian patent published in 2000 - IPC

FIELD: chill mold casting. SUBSTANCE: at casting cylinder block of internal combustion engine, sleeves are heated before placing them in mold. In process of pouring alloy into mold symbol portions of sand cores through ventilation ducts of metallic matrices of mold are connected with vacuum system. Sleeves have annular sealing beads on outer lateral surface. End surfaces of beads are flat ones or they are in the form of truncated cones turned by their large bases to that end of sleeve near which they are arranged. Sleeves are heated until temperature less than temperature of beginning change of microstructure of sleeve material but higher than crystallization temperature of casting material. It provides close contact of sleeves with body of casting. Beads provide crimping of sleeve by casting alloy. EFFECT: fluid tightness of cooling jacket of cylinder block. 3 cl, 4 dwg