摘要
通过对氮气孔形貌的分析,找出了氮气孔形成的主要原因。通过如下措施,彻底解决了氮气孔缺陷问题:(1)控制废钢加入量在45%以下;(2)少用或不用螺纹钢、导轨钢等w(N)量高的废钢;(3)用加入适量钛铁的方法降低铁液中的w(N)量;(4)在用感应电炉熔化时,保证w(N)量不低于60ppm。
Based on the morphology analysis of the nitrogen fissure defect, the factors causing nitrogen fissure were found. The fissure defect has been completely eliminated by adopting following measures: (1)reducing the steel scrap amount in the melting charge to less than 45%; (2)using less or not thread steel or guideway steel scraps which normally containing high nitrogen; (3)adding proper amount ferrotitanium to reduce the nitrogen content of the iron melt; (4)keeping nitrogen content less than 60 ppm when melting with induction furnace.
出处
《现代铸铁》
CAS
2011年第4期67-69,共3页
Modern Cast Iron
关键词
灰铸铁
氮气孔
解决措施
gray iron
nitrogen fissure
eliminating measures