JX4D24缸体冷芯工艺外观孔眼缺陷成因与对策  

The Causes and Countermeasures of Hole Defects in Cold Core Process of JX4D24 Cylinder Block

作　　者：甘轶[1] 马雨 万修根 彭志富 GAN Yi;MA Yu;WAN Xiugen;PENG Zhifu(Foundry,Jiangling Automobile Co.,Ltd.,Nanchang 330001,Jiangxi China)

机构地区：[1]江铃汽车股份有限公司铸造厂,江西南昌330001

出　　处：《铸造工程》2023年第3期38-40,共3页Foundry Engineering

摘　　要：针对JX4D24发动机缸体冷芯盒工艺外观孔眼缺陷问题,在分析了发动机缸体铸件结构特点和铸造工艺方法的基础上,探究了发动机缸体外观孔眼缺陷产生的原因,提出了增加排气、增加局部加工余量、提高浇注温度、优化浇注系统等改善措施。改善实施后缸体外观孔眼类缺陷比例降幅达60%,极大地提升了JX4D24发动机缸体冷芯盒工艺的产品质量。Aiming at the appearance hole defects of cold core box process of JX4D24 engine cylinder block,the causes of appearance hole defects of engine cylinder block were explored on the basis of analyzing the structural characteristics and casting process methods of engine cylinder block castings,and the improvement measures such as increasing exhaust gas,increasing local processing allowance,improving pouring temperature and optimizing pouring system were put forward.After the implementation of the improvement,the proportion of hole and hole defects on the appearance of the cylinder block decreased by 60%,which greatly improved the product quality of the cold core box process of the JX4D24 engine cylinder block.

关 键 词：缸体 冷芯盒 外观孔眼 侵入性气孔 静压力头 

分 类 号：TG244[金属学及工艺—铸造]