Quality Control of Reducer Shell of Lost Foam Casting Process
Author of the article:ZHANG Yusong
Author's Workplace:Foundry Branch, Shaanxi Fast Auto Drive Co., Ltd., Baoji 722409, China
Key Words:lost foam casting process double skin iron penetration inclusion defects
Abstract:
In order to reduce the double skin, iron penetration and inclusion defects of reducer shell, according to the principle of lost foam casting and the structural characteristics of reducer shell, the causes of defects were analyzed. The results show that the comprehensive reject rate of reducer shell can be controlled within 7% by selecting reasonable pouring riser form, optimizing sand filling method, selecting reasonable ripening time and pouring temperature and other measures. The problem of air leakage in reducer shell can be effectively solved by optimizing local structure and pressure-maintaining process.