Processing Practice for Inclusion Controlling of Stainless Steel 0Cr18Ni9 in Refining Process of a 90 t LF

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Processing Practice for Inclusion Controlling of Stainless Steel 0Cr18Ni9 in Refining Process of a 90 t LF

更新时间：2026-01-21

- Processing Practice for Inclusion Controlling of Stainless Steel 0Cr18Ni9 in Refining Process of a 90 t LF
- Special Steel Vol. 31, Issue 3, Pages: 33-34(2010)
- 作者机构：
  
  太钢不锈钢股份有限公司技术中心,太原,030003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：02 November 2009，
  
  Online First：07 November 2022，
  
  Published：07 November 2010
- 稿件说明：
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范新智. Processing Practice for Inclusion Controlling of Stainless Steel 0Cr18Ni9 in Refining Process of a 90 t LF[J]. Special Steel, 2010, 31(3): 33-34.
DOI：

范新智. Processing Practice for Inclusion Controlling of Stainless Steel 0Cr18Ni9 in Refining Process of a 90 t LF[J]. Special Steel, 2010, 31(3): 33-34. DOI：

摘要

叙述太钢二炼钢厂90 t LF精炼0Cr18Ni9奥氏体不锈钢时对钢中夹杂物的控制效果。工艺实践表明

钢水经VOD后

钢中氧含量为(40～55)×10

-6

再经LF喂铝线0.3～1.0 kg/t时

可使钢中氧含量进一步降至(24～35)×10

-6

同时钢中夹杂物数量减少40%以上;接着喂0.9～1.5 kg/t硅钙线使钢中夹杂物变性成球状

同时通过200～600 L/min氩气搅拌10～20 min和50～150 L/min氩气搅拌15～20 min

使钢中夹杂物数量进一步减少50%以上

并去除了钢中尺寸为30μm以上的夹杂物。

Abstract

The controlling results of inclusions in steel during refining austenite stainless steel 0Cr18Crl9 in a 90 t ladle furnace at No2 steelmaking plant

Taiyuan Steel are presented. Operation practice shows that after VOD process

oxygen content in steel is (40 ~55) x 10

-6

then feeding 0. 3 ~ 1. 0 kg/t aluminum wire in LF

the oxygen content in steel further decreases to (24 ~35) x 10

-6

while the amount of inclusions in steel decreases by more than 40% ； followed by feeding 0. 9 ~ 1. 5 kg/t silicon-calcium wire

the inclusions in steel are modified to spheroid

and with 200 ~ 600 L/min argon stirring for 10 ~ 20 min and 50 ~ 150 L/min for 15 - 20 min

the amount of inclusions in steel further decreases by more than 50% and the inclusions size more than 30 μm are removed from liquid steel.

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