Cleanliness of Molten Steel Improved by Mg

CHEN Bin;BAO Sarina;JIANG Min;WANG Canguo;WANG Xinhua

Journal of Iron and Steel Research ›› 2008, Vol. 20 ›› Issue (6) : 14-0.

Journal of Iron and Steel Research ›› 2008, Vol. 20 ›› Issue (6) : 14-0.
冶炼与加工

Cleanliness of Molten Steel Improved by Mg

  • CHEN Bin,BAO Sarina,JIANG Min,WANG Canguo,WANG Xinhua
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Abstract

Three different deoxidation technics have been taken to treat the molten steel (42CrMo) in vacuum induction furnace including deoxidation of only adding alumimium, synthetic deoxidation of Al+Ca and synthetic deoxidation of Al+Mg. The results show that synthetic deoxidations are apparently better than Al deoxidation and Al+Mg deoxidation is the best one in terms of lowering total oxygen content in molten steel. Compared with Al+Ca deoxidation and Al deoxidation, Al+Mg synthetic deoxidation can reduce the number of inclusion per unit area nearly by 2/3 and 4/5 respectively. Furthermore, most of the inclusions detected in the sample after Mg treatment are smaller than 2 μm in size so tiny, which are nearly no influence on performance of steel.

Key words

cleanliness / oxygen content / Mg treatment

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CHEN Bin;BAO Sarina;JIANG Min;WANG Canguo;WANG Xinhua. Cleanliness of Molten Steel Improved by Mg[J]. Journal of Iron and Steel Research, 2008, 20(6): 14-0

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