Production Practice on Bottom Blowing Nitrogen Alloying during 30 t VOD Refining Process

安杰; 赵越; 李忠伟; 魏仁杰

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Production Practice on Bottom Blowing Nitrogen Alloying during 30 t VOD Refining Process

更新时间：2026-01-21

- Production Practice on Bottom Blowing Nitrogen Alloying during 30 t VOD Refining Process
- Special Steel Vol. 36, Issue 6, Pages: 10-12(2015)
- 作者机构：
  
  1. 抚顺特殊钢股份有限公司1技术处
  2. 第二炼钢厂,抚顺,113001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 June 2015，
  
  Online First：11 August 2022，
  
  Published：11 August 2015
- 稿件说明：
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安杰, 赵越, 李忠伟, et al. Production Practice on Bottom Blowing Nitrogen Alloying during 30 t VOD Refining Process[J]. Special Steel, 2015, 36(6): 10-12.
DOI：

安杰, 赵越, 李忠伟, et al. Production Practice on Bottom Blowing Nitrogen Alloying during 30 t VOD Refining Process[J]. Special Steel, 2015, 36(6): 10-12. DOI：

摘要

依据30 t VOD生产数据

在初始[C

]

0.50%~0.60%

初始[Si

]

0.12%~0.20%

初始钢水温度1 640~1 650℃

氩和氮气压分别为0.8×10

~1.0×10

Pa和1.5×10

~1.6×10

Pa的条件下

对比底吹氩气和底吹氮气两种工艺在入VOD初始、吹氧脱碳以及还原脱气后的不锈钢（0.04%~0.06%N）中氮含量。结果表明

VOD底吹氮气精炼后Cr13型和Cr17型两类不锈钢的钢液氮含量为260×10

-6

和300×10

-6

其氮合金化效果显著;常压下氮气搅拌Cr13型和Cr17型不锈钢钢液的平均增氮速率为40×10

-6

/min和45×10

-6

/min;钢液温度升高

增氮速率增加

通过降低VOD精炼不锈钢的钢液氧含量

能够提高底吹氮气的氮合金化效果。

Abstract

According to 30 t VOD production data with the conditions of beginning [ C

]

0. 50%-0. 60% and [Si

]

0. 12% -0. 20%

beginning liquid temperature 1 640 -1 650 °C

and argon and nitrogen pressure respectively being 0. 8 x 10

- 1.0 x 10

Pa and 1.5 x 10

- 1. 5 x 10

the nitrogen content in stainless steels (0. 04% - 0. 06% N) at VOD beginning

decarburized by oxygen blown and after reduction and degassing by bottom blowing argon process and bottom blowing nitrogen process have been compared. Results show that after VOD bottom blowing argon refining the nitrogen content in Cr13 type and Cr17 type stainless liquid is respectively 260 x 10

-6

and 300 x 10

-6

its nitrogen alloying

effect is obvious

and in normal atmosphere with nitrogen stirring the average increasing rate of nitrogen in Cr13 type and Cr17 type stainless steel liquid

is respectively 40 x 10

-6

/min and 45 x 10

-6

/min

and with increasing liquid temperature the increasing rate of nitrogen in liquid increases

and with decreasing oxygen content in VOD refining stainless steel liquid the nitrogen alloying effect by bottom blowing nitrogen could be increased.

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