Application of Baozhu Sand in Engine Castings Production

Author of the article:LI Zhongze, LIU Mandui, WANG Baiqin, CHEN Zhaojie

Author's Workplace：Luoyang Kailin Foundry Material Company Ltd., Luoyang 471003, China

Key Words：baozhu sand; engine casting parts; application

Abstract： Baozhu sand is a kind of artificial fused ceramic foundry sand developed in China. Baozhu sand has nearly
round shape, stable chemical properties and strong crushing resistance. It has remarkable effects of saving binder dosage,
reducing casting defects, improving casting quality and reducing waste discharge. It has been widely used in sand casting
(green sand mold sand, sodium silicate sand, resin self-hardening sand, hot core box, cold core box) and expendable casting
proces and other production of cast iron, cast steel and non-ferrous alloy. At present, the biggest application is the engine
foundry industry. Some application examples of Baozhu sand in engine castings, including cylinder block, cylinder head,
exhaust manifold and turbocharger casing are introduced, and some process parameters, application points, effects and
benefits are analyzed.