Comparison of Cleanliness of Pipeline Steel Refining by RH-LF and LF-VD Process

余健; 李晶; 田伟; 姚永宽; 耿建林; 尹雨群; 谯明亮

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Comparison of Cleanliness of Pipeline Steel Refining by RH-LF and LF-VD Process

更新时间：2026-01-21

- Comparison of Cleanliness of Pipeline Steel Refining by RH-LF and LF-VD Process
- Special Steel Vol. 30, Issue 2, Pages: 52-54(2009)
- 作者机构：
  
  1. 北京科技大学冶金与生态工程学院,北京,100083
  2. 南京钢铁集团股份有限公司,南京,210035
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：16 September 2008，
  
  Online First：05 December 2022，
  
  Published：05 December 2009
- 稿件说明：
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余健, 李晶, 田伟, et al. Comparison of Cleanliness of Pipeline Steel Refining by RH-LF and LF-VD Process[J]. Special Steel, 2009, 30(2): 52-54.
DOI：

余健, 李晶, 田伟, et al. Comparison of Cleanliness of Pipeline Steel Refining by RH-LF and LF-VD Process[J]. Special Steel, 2009, 30(2): 52-54. DOI：

摘要

比较了铁水预处理-150 t顶底复吹转炉钢水经RH-LF和LF-VD两种精炼工艺生产的管线钢(≤0.04%C-1.55%～1.78%Mn)洁净度。结果表明

RH-LF和LF-VD精炼均能使管线钢氮含量降至(30～40)×10

-6

氧含量≤10×10

-6

硫含量≤0.002 0%;LF-VD精炼渣碱度高于RH-LF精炼渣

LF-VD精炼钢平均磷含量为0.0090%

比RH-LF精炼钢低0.001 0%;两种精炼钢中主要夹杂物为钙铝酸盐和钙铝酸盐-二氧化硅复合夹杂

LF-VD精炼钢大部分夹杂物尺寸为5～10μm

RH-LF精炼钢大部分夹杂物尺寸为5～20μm。

Abstract

Cleanliness of pipeline steel(≤0.04%C-1.559%~1.78%Mn)produced by two refining processes-RH-LF and LF-VD with liquid steel melting by hot metal pretreatment- 150 t top and bottom blown converter process has been compared. Results showed that after RH-LF or LF-VD refining

the nitrogen content in pipeline decreased to (30～40) x 10

-6

the oxygen content was ≤ 10×10

-6

and the sulphur content was ≤0.0020%;as the basicity of refining slag for LF-VD process was higher than that for RH-LF process

the average phosphorus content in LF-VD refined steel was 0.0090% which was lower by 0.0010% as compared with that in RH-LFrefined steel; the main inclusions in both refining steel were calciun-aluminates inclusion and calcium-aluminate silicon-dioxide compound inclusion; and the size of most inclusions in steel refining by LF-VD was 5~10 μm while that by RH-LF was 5～20 μm.

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