Production Practice of Ultra-Low Sulphur Pipeline Steel L245NCS  without Pretreatment of Hot Metal

魏巍; 李虹

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Production Practice of Ultra-Low Sulphur Pipeline Steel L245NCS without Pretreatment of Hot Metal

更新时间：2026-01-21

- Production Practice of Ultra-Low Sulphur Pipeline Steel L245NCS without Pretreatment of Hot Metal
- Special Steel Vol. 40, Issue 6, Pages: 39-41(2019)
- 作者机构：
  
  石钢京诚装备技术有限公司,营口,115000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：12 May 2019，
  
  Online First：11 May 2022，
  
  Published：11 May 2019
- 稿件说明：
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魏巍, 李虹. Production Practice of Ultra-Low Sulphur Pipeline Steel L245NCS without Pretreatment of Hot Metal[J]. Special Steel, 2019, 40(6): 39-41.
DOI：

魏巍, 李虹. Production Practice of Ultra-Low Sulphur Pipeline Steel L245NCS without Pretreatment of Hot Metal[J]. Special Steel, 2019, 40(6): 39-41. DOI：

摘要

LF精炼渣系控制在CaO 50%～58%、Al

27%～35%、SiO

≤10%、MgO≤10%、（TFe+MnO）≤1.0%

MI范围0.25～0.30

R范围8～9.5

（CaO）/（Al

）范围1.6～1.9

Als含量0.010%～0.020%。渣系脱硫效果好

化渣快

可在无铁水预处理的情况下

满足生产成品S≤15×10

-6

超低硫管线钢L245NCS的要求。

Abstract

Composition of LF Slag System CaO 50%～58%、Al2O3 27%～35%、SiO2≤10%、MgO≤10%、（TFe+MnO）≤1.0%;

MI range 0. 25 ~ 0. 30

R range 8 ~ 9. 5

( CaO)/( A1

) range 1. 6 ~ 1. 9

Als content is 0. 010% ~ 0. 020%. The LF slag system has good desulfurization effect and quick slag formation. Without pretreatment of hot metal

it can meet the requirement of producing S≤15 X 10

-6

ultra-low sulphur pipeline steel L245NCS

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