消失模铸造球墨铸铁减速机壳体夹杂及缩孔消除研究  

Study on Inclusion and Shrink Hole Elimination of EPC Ductile Iron Reducer Housing

作　　者：周瑞 张维江 刘王强 刘高峰 淡瑶 赵芳芳 ZHOU Rui;ZHANG Weijiang;LIU Wangqiang;LIU Gaofeng;DAN Yao;ZHAO Fangfang(ShaanxiFastGroupCo.,Ltd.,Baoji 722409,China;Xi’anHuaOu PrecisionMachineryCo.,Ltd.,Xi’an 710000,China)

机构地区：[1]陕西法士特齿轮有限责任公司,陕西宝鸡722409 [2]西安华欧精密机械有限责任公司,陕西西安710000

出　　处：《铸造技术》2021年第4期300-303,共4页Foundry Technology

摘　　要：消失模铸造生产球墨铸铁减速机壳体,减速机壳体端面出现夹杂和缩孔缺陷。通过在铸件端面增加余量,解决了减速机壳体端面的夹杂。探索出散热新工艺和柔性冷铁工艺,并严格控制铸造过程负压,解决铸件热节区域缩孔缺陷。实验结果表明,散热工艺和柔性冷铁工艺均能够解决消失模铸造球墨铸铁减速机壳体缩孔缺陷,并且工艺简单,工艺出品率高。The ductile iron reducer housing was produced by EPC.The defects of inclusion and shrinkage appeared on the end of the reducer housing.The inclusion in the end face of the reducer housing was solved by increasing the allowance in the end face of the casting.The new heat dissipation technology and flexible chiller technology were explored,and the negative pressure in the casting process was strictly controlled to solve the shrinkage hole defects in the hot joint area of the casting.The results show that both the heat dissipation process and the flexible chiller process can solve the shrinkage hole defects of EPC ductile iron reducer housing,and the process is simple and the process yield is high.

关 键 词：消失模铸造 球墨铸铁 缩孔 夹杂 散热工艺 柔性冷铁 

分 类 号：TG249[金属学及工艺—铸造]