45 t AOD精炼高氮奥氏体不锈钢10Cr21Mn16NiN的工艺实践

特殊钢 ›› 2014, Vol. 35 ›› Issue (3): 27-28.

45 t AOD精炼高氮奥氏体不锈钢10Cr21Mn16NiN的工艺实践

范新智

山西太钢不锈钢股份有限公司技术中心，太原030003

收稿日期:2013-12-22 出版日期:2014-06-01 发布日期:2022-08-29
作者简介:范新智(1975-),男，高级工程师,2000年东北大学(本科)毕业,不锈钢生产工艺研究及产品开发。

Technology Practice of 45t AOD Refining High Nitrogen Austenite Stainless Steel 10Cr21Mn16NiN

Fan Xinzhi

Technology Center, Shanxi Taigang Stainless Steel Co Ltd, Taiyuan 030003

Received:2013-12-22 Published:2014-06-01 Online:2022-08-29

摘要/Abstract

摘要： 冶炼高氮不锈钢10Cr21Mnl6NiN (/%:0.03~0.13C,0.30~0.60Si,15.0~17.0Mn, ≤0.045P, ≤0.030S,21.0~22.0Cr,1.0~1.8Ni,0.40~0.65N) EAF粗炼钢水主要成分为2.20%C,21.32%Cr。AOD精炼时,采用顶吹和底侧吹氧氮进行脱碳,加入锰铁和镍铁,并加入石灰脱硫,用硅铁还原后再用铝和硅钙粉进行深脱氧;使用金属锰进行锰合金化后钢中Mn含量达16%;在钢水量为45.2~46.0 t时,AOD出钢时钢中氮含量为0.49%~0.54%,在出钢过程加入1.34~1.67 t氮化锰后钢中氮含量为0.64%~0.65%,氮的收得率可达42.1%~50.2%。

Abstract: The main chemical composition of EAF primary liquid metal for steelmaking high nitrogen stainless steel 10Cr21Mn16NiN (/% ： 0.03 ~0.13C, 0. 30 ~0. 60Si, 15.0-17. 0Mn, ≤0.045P, ≤0.030S, 21. 0 ~ 22. 0Cr, 1.0~ 1. 8Ni, 0. 40 ~0. 65N) is 2. 20% C, 21. 32% Cr. The decarburizing of liquid is carried out by top-blowing and bottom side blowing oxygen-nitrogen, added manganese iron and nickel iron, added lime to desulfurize, and after reducing by silicon iron the deep deoxidation of liquid steel is carried out by adding aluminium and calcium silicon powder; after manganese alloying by using metal manganese the Mn content in steel is up to 16%; during AOD tapping with liquid amount 45. 2 ~ 46.0 t, the nitrogen content in steel is 0.49% ~0.54%, after adding 1. 34 ~ 1. 67 t manganese nitride the nitrogen content in steel is 0. 64% ~0. 65%, the yield of nitrogen is up to 42.1% ~ 50. 2%.

范新智. 45 t AOD精炼高氮奥氏体不锈钢10Cr21Mn16NiN的工艺实践[J]. 特殊钢, 2014, 35(3): 27-28.

Fan Xinzhi. Technology Practice of 45t AOD Refining High Nitrogen Austenite Stainless Steel 10Cr21Mn16NiN[J]. Special Steel, 2014, 35(3): 27-28.