Control of Silicon Content in Low Silicon Steel ST30A1 for Seamless Tube in LF Refining Process

印传磊; 杨丽梅; 翟万里; 马建超; 林鹏; 张洪才

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Control of Silicon Content in Low Silicon Steel ST30A1 for Seamless Tube in LF Refining Process

更新时间：2026-01-21

- Control of Silicon Content in Low Silicon Steel ST30A1 for Seamless Tube in LF Refining Process
- Special Steel Vol. 39, Issue 2, Pages: 21-24(2018)
- 作者机构：
  
  江苏沙钢集团淮钢特钢股份有限公司技术中心,淮安,223002
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：09 October 2017，
  
  Online First：28 June 2022，
  
  Published：28 June 2018
- 稿件说明：
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印传磊, 杨丽梅, 翟万里, et al. Control of Silicon Content in Low Silicon Steel ST30A1 for Seamless Tube in LF Refining Process[J]. Special Steel, 2018, 39(2): 21-24.
DOI：

印传磊, 杨丽梅, 翟万里, et al. Control of Silicon Content in Low Silicon Steel ST30A1 for Seamless Tube in LF Refining Process[J]. Special Steel, 2018, 39(2): 21-24. DOI：

摘要

分析了低硅钢ST30Al（/%:0.06~0.10C

≤0.05Si

0.30~0.45Mn

≤0.015P

≤0.005S

0.025~0.050Al）在LF精炼过程中钢水回磷量、钢水铝含量、精炼渣二元碱度、精炼渣Al

含量等因素对钢水增硅量的影响

得出转炉下渣量、钢水铝含量、精炼炉渣碱度是影响增硅的主要因素。通过控制转炉下渣、降低原辅料中的硅含量、调整精炼渣中SiO

、Al

含量、控制精炼渣二元碱度14

渣中Al

为27%

控制钢水铝含量0.010%~0.020%

LF钢水增硅量由原0.033%~0.047%降低到0.004%~0.018%

成品钢水硅含量≤0.035%。

Abstract

The effect of factors including increasing phosphorus content in liquid

aluminium content in liquid

refining slag binary basicity

and Al

content in refining slag on increasing silicon content in liquid of low silicon steel ST30A1 (/%: 0.06~0.10C

≤0.05Si

0.30~0.45Mn

≤0.015P

≤0.005S

0.025~0.050Al) during LF refining process has been analyzed. It is obtained that the BOF tapping slag amount

liquid aluminium content and refining slag binary basicity are main factors to aflect the increasing silicon content in liquid. With controlling BOF tapping slag amount

decreasing silicon content in raw and auxiliary materials

adjusting the SiO

and Al

content in refining slag to control refining slag binary basicity-14 and Al

content in refining slag-27%

and controlling aluminium content in liquid 0.010%~0.020%

The increasing silicon content in LF liquid decreases from original 0.033%~0.047% to 0.004%~0.018%.

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