球墨铸铁冷铁与灰铸铁冷铁的应用分析

Application Analysis of Ductile Iron and Gray Cast lron Chill

采用球墨铸铁冷铁,按照规范操作,来消除铸件内腔冷铁处出现的皮下气孔缺陷。产品生产过程中,冷铁放置在铸件内腔处,对比了灰铸铁冷铁与球墨铸铁冷铁的使用情况。在保证铸件与冷铁面接触面不出现皮下气孔的标准下,球墨铸铁冷铁使用次数是灰铸铁冷铁的6倍。

The ductile iron chill is normatively used to eliminate the subsurface blowhole defects at the chill positions of the inner cavity of the casting. In the production process, the chills were placed in the inner cavity of the casting. The application of gray cast iron chill and ductile iron chill were compared. Under the standard of ensuring no subsurface blowholes on the contact surface between the casting and the chills, the use number of the ductile iron chill is 6 times that of the gray cast iron chill.