蠕铁气缸盖缩孔缺陷分析及工艺优化  

Analysis and process optimization of shrinkage cavity on vermicular iron cylinder head

作　　者：孙晓敏 王福祥 臧加伦 刘庆义 齐建 SUN Xiaomin;WANG Fuxiang;ZANG Jialun;LIU Qinyi;QI Jian(Technology and Artisan Research Institute,Weichai Power Co.,Ltd.,Weifang 261061,Shandong China;State Key Laboratory of Engine Reliability,Weifang 261061,Shandong China)

机构地区：[1]潍柴动力股份有限公司工艺工匠研究院,山东潍坊261061 [2]内燃机可靠性国家重点实验室,山东潍坊261061

出　　处：《中国铸造装备与技术》2021年第1期95-98,共4页China Foundry Machinery & Technology

摘　　要：采用扫描电子显微镜(SEM)分析了蠕铁联体气缸盖缩孔缺陷形成原因,优化了工艺方案,提出了缩孔缺陷解决措施。结果表明,蠕铁气缸盖缩孔缺陷不是由“气”和“缩”共同作用的,是由“缩”导致的。布置发热保温冒口、内外冷铁的工艺方案可以有效消除缩孔缺陷,生产出合格气缸盖。By use of scanning electron microscope(SEM),the causes of the shrinkage cavity on vermicular iron cylinder head have been analyzed,while the process has been optimized and the solution of shrinkage cavity has been proposed.The results show that the shrinkage cavity on vermicular iron cylinder head is not caused by"air"and"shrinkage",but by"shrinkage".The process of arranging the thermal insulation riser,internal and external chills can effectively eliminate the shrinkage cavity and produce qualified cylinder head.

关 键 词：蠕铁 气缸盖 缩孔 工艺优化 

分 类 号：TG245[金属学及工艺—铸造]