This paper describes the negative influence of high residual aluminum which is used as a deoxidant in the steel and raises the newest control requirement for high carbon steel on residual aluminum. By means of thermodynamic calculation and production practices, the total oxygen (∑[O]) in the steel can be 10 ppm through carbon-oxygen reaction under the conditions of high vacuum, proper top slag composition, and argon stirring during ladle refining/vacuum degassing (LF/VD) processes of high carbon chromium bearing steel. Meanwhile, the size of D-type inclusion in the steel is obviously reduced. Thus, the purity of the bearing steel is improved. Since the consumption of aluminum used for deoxidation is reduced, the unit cost of bearing steel is obviously reduced.
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