灰铁机体件热裂纹的研究及预防  

Research and precaution of hot cracks in gray iron cylinder block

作　　者：韩志濂 张聚辉 许景峰 鞠欣宝 HAN Zhilian;ZHANG Juhui;XU Jingfeng;JU Xinbao(Weichai Heavy Machinery Co.,Ltd.,Weifang 261108,Shandong China)

机构地区：[1]潍柴重机股份有限公司,山东潍坊261108

出　　处：《中国铸造装备与技术》2022年第2期84-87,共4页China Foundry Machinery & Technology

摘　　要：对一种V型灰铁发动机机体热裂纹缺陷进行了研究,通过对浇注后铸件凝固时铸造应力的产生和传递过程分析,确认了热裂纹形成机理,并在生产实验中进行了验证,采用加冷铁的工艺解决了热裂纹缺陷。The hot crack defect of a V-shaped gray iron engine block has been studied. Through the analysis of the generation and transfer process of casting stress during the solidification of the casting after being poured, the formation mechanism of the hot crack has been confirmed, which is verified in the production experiment. The process of adding cold iron solves the hot crack defect.

关 键 词：灰铁机体 铸造应力 热裂纹 

分 类 号：TG245[金属学及工艺—铸造]