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| Study on Cleanliness of Bearing Steel GCr15 During Steelmaking Process |
ZHANG Xianzhong1,CHEN Qingfeng1,XIONG Yuzhang1，
QIU Wentao2,XU Guanyu2，GUOYuankui2 |
| 1. Reseach and Develoment Center， Wuhan Steel and Iron (Group) Corp.， Wuhan 430081, Hubei, China; 2. EGang Corporation of Wuhan Steel and Iron (Group) Corp.,Ezhou 436001, Hubei, China |
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Abstract The change of N,Ti,Ca,S content in steel GCr15 during EAFEBTLFVDCC process and effect on the product quality were studied. The results showed that the nitrogcn pickup during EBT tapping and LF refining could be eliminated by vacuum treatment and soft Ar blowing in VD process and Ti comes from alloys and refractory; EBT tapping with active lime addition and Cawire feeding could result in the increment of Ca content; high basicity refining slag is benefit to desulfurization, but without modification of inclusions; the major inclusions of GCr15 are rhombic TiN and oxides of Si,Al,Mg.
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Received: 01 January 1900
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2008, Vol. 43 
