消除发动机缸体黑点缺陷的措施  

Measures on Eliminating Dark Spots Defect on Engine Body Cylinder

作　　者：邹荣剑[1] 王顺安[1] 

机构地区：[1]重庆大江工业集团铸锻公司,重庆401321

出　　处：《铸造技术》2010年第6期698-701,共4页Foundry Technology

摘　　要：462Q缸体在机加精膛后,缸孔壁上出现不均匀的黑色斑点,造成缸体约15%的报废。针对缸体缸孔壁上的黑点缺陷,从原材料、化学成分、冷却条件等多方面分析其产生的原因,并通过改变其化学成分、浇注温度、调整炉料配比等一系列措施,使缸孔黑点类缺陷得到了彻底的解决。The 462Q body cylinder after precision machining, the non-uniform dark spots appear on cylinder wall , which cause approximately 15% abandonment of the cylinder body. In view of this defect , analysis was taken concerning the factors which cause formation of dark spots such as raw material, the chemical composition, and the cooling condition and so on. Adjusting on chemical composition and the pouring temperature and the burden of charge material, the dark spots defect on cylinder hole was thoroughly solved.

关 键 词：缸体 黑色斑点 化学成分 浇注温度 

分 类 号：TG255[金属学及工艺—铸造]