BOF-LF-CC工艺生产SPHC钢的洁净度

doi:10.13228/j.boyuan.issn0449-749x.20140121

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Abstract Based on tracer production experiment， the cleanliness of SPHC steel produced by BOF-LF-CC process in a domestic steel plant was investigated by the way of sampling systematically and comprehensive analysis. The results showed that the mass of macro-inclusion after LF refining increased to 36.7 mg/(10 kg) compared with that after calcium treatment which was 19.6 mg/(10 kg). From the tapping of LF refining to tundish， the average mass percent total oxygen in molten steel increased from 23×10-6 to (36-48)×10-6 and existed a certain degree of re-oxidation. The results of tracer experiment revealed that serious entrapment of refining slag during LF refining and erosion of refractory in tundish occurred.

Key words： SPHC steel cleanliness non-metallic inclusion re-oxidation

Received: 04 March 2014 Published: 02 February 2015

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TF76

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	Articles by authors
	LIU Cheng-Song
	LI Jing-She
	GAO Xiao-Jie
	YANG Shu-Feng

Cite this article:

LIU Cheng-Song,LI Jing-She,GAO Xiao-Jie等. Investigation on cleanliness of SPHC steel produced by BOF-LF-CC process[J]. Iron and Steel, 2015, 50(2): 27-31.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20140121 OR http://www.chinamet.cn/Jweb_gt/EN/Y2015/V50/I2/27

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