Abstract：T[O] and inclusions during EAF→LF→VD→Purging→CC process were investigated on GCr15 bearing steel. Through controlling carbon content at EAF tapping from 0.2% to 0.4%, adding aluminum and flux during tapping for deoxidation and pre-refining, making high basicity slag with little (TFe+MnO) content during LF refing, stirring the steel in VD and preventing steel reoxidation in tundish, bearing steel with [w(T[O])=8×10－6] can be produced. Inclusions changed in order of Al2O3→MgO·Al2O3→CaO-MgO-Al2O3 during the secondary refining process. The average size of inclusions decreased after ladle refining, while picked up after vacuum treatment, and continously decreased during purging and in tundish. Inclusion number can be reduced by 74% through VD process.
杨光维， 郝 鑫， 杨 叠， 王新华， 黄福祥， 王万军. GCr15轴承钢冶炼过程钢液洁净度变化[J]. 钢铁, 2014, 49(11): 31-35.
YANG Guang-wei, HAO Xin, YANG Die, WANG Xin-hua, HUANG Fu-xiang, WANG Wan-jun. Cleanliness of GCr15 Bearing Steel During Steelmaking Process. Iron and Steel, 2014, 49(11): 31-35.
Uesugi T. Recent development of bearing steel in Japan[J]. Transactions of the Iron and Steel Institute of Japan, 1988, 28(11): 893.
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Uesugi T. Recent development of bearing steel in Japan[J]. Transactions of the Iron and Steel Institute of Japan, 1988, 28(11): 893.
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Kawakami K, Taniguchi T, Nakashima K. Generation mechanisms of non-metallic inclusions in high-cleanliness steel[J]. Tetsu to Hagane-Journal of the Iron and Steel Institute of Japan, 2007, 93(12): 743.
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Kawakami K, Taniguchi T, Nakashima K. Generation mechanisms of non-metallic inclusions in high-cleanliness steel[J]. Tetsu to Hagane-Journal of the Iron and Steel Institute of Japan, 2007, 93(12): 743.
2014, Vol. 49 
