An Analysis on Micro-Inclusion in Bearing Steel at Each Procedure of BOF-LF-VD-CC Flow Sheet

杜珊; 闫绍维; 王硕明; 刘宪民

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An Analysis on Micro-Inclusion in Bearing Steel at Each Procedure of BOF-LF-VD-CC Flow Sheet

更新时间：2026-01-21

- An Analysis on Micro-Inclusion in Bearing Steel at Each Procedure of BOF-LF-VD-CC Flow Sheet
- Special Steel Vol. 28, Issue 5, Pages: 16-18(2007)
- 作者机构：
  
  1. 河北理工大学计算机与自动控制学院,唐山,063009
  2. 河北理工大学冶金与能源学院,唐山,063009
  3. 石家庄钢铁有限责任公司,石家庄,050031
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 March 2007，
  
  Online First：13 February 2023，
  
  Published：13 February 2007
- 稿件说明：
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杜珊, 闫绍维, 王硕明, et al. An Analysis on Micro-Inclusion in Bearing Steel at Each Procedure of BOF-LF-VD-CC Flow Sheet[J]. Special Steel, 2007, 28(5): 16-18.
DOI：

杜珊, 闫绍维, 王硕明, et al. An Analysis on Micro-Inclusion in Bearing Steel at Each Procedure of BOF-LF-VD-CC Flow Sheet[J]. Special Steel, 2007, 28(5): 16-18. DOI：

摘要

系统分析了石钢45 t顶底复吹转炉-LF-VD-中间包冶金过程各工序轴承钢中显微夹杂物的行为、特征、数量及变化历程。钢中的夹杂物由LF处理前的块状Al

、铬硅酸盐和铬锰酸盐逐步转变为铸坯中的铬钙酸盐、球状铬硅酸盐和条状铬锰酸盐夹杂;显微夹杂数量平均值由LF处理前8.74个/mm

减少为铸坯中2.72个/mm

夹杂物尺寸亦减小。

Abstract

The behavior

characteristics

amount and transformation of microinclusion in bearing steel at each procedure of 45t BOF-LF-VD-CC flow sheet at Shijiazhuang Steel have been studied by added tracer elements.Results showed that inclusions in steel before LF refining were gradually transformed from blocky Al

chromic-silicate and chromic-manganate to calcium chromate

globular chromic-silicate and banding chromic-manganate inclusions in cast billet; and the average number of micro-inclusions in steel decreased from 8.74/mm² before LF to 2.72/mm² in billet while the size of inclusions also decreased.

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