底吹氮气冶炼高氮不锈钢的应用研究

特殊钢 ›› 2012, Vol. 33 ›› Issue (5): 15-18.

底吹氮气冶炼高氮不锈钢的应用研究

赵定国, 王书桓

河北联合大学冶金与能源学院教育部现代冶金技术重点实验室，唐山063009

收稿日期:2012-03-27 出版日期:2012-10-01 发布日期:2022-10-09
通讯作者: 王书桓
作者简介:赵定国(1981-),男，博士，副教授，从事炼钢新技术。
基金资助:
国家自然科学基金项目资助(50974051)

Applied Research on High Nitrogen Stainless Steel Smelting by Bottom-Blowing Nitrogen

Zhao Dingguo , Wang Shuhuan

Educational Ministry Key Lab of Modem Metallurgy Technology, College of Metallurgy and Energy, Hebei United University, Tangshan 063009

Received:2012-03-27 Published:2012-10-01 Online:2022-10-09

摘要/Abstract

摘要： 根据对高氮不锈钢冶炼设备和工艺、氮气在高温高压下溶入钢液中的方式和特点,以及底吹增氮的优势的分析,在实验室通过300 g钢水底吹异型坩埚在0.5～1.5 MPa,氮气底吹流量0.14～0.24 m~3/h,1820～1910 K下对高氮不锈钢Cr18Mn18N(/%:0.17C、18.00Cr、18.09Mn、0.25Si、0.010S、0.020P、1.07N)进行增氮试验。结果表明,在1.5 MPa、1890 K,0.15 m~3/h底吹氮气流量下,当底吹时间20～30 min氮含量趋于饱和,可快速冶炼出氮含量≥1.0%高氮不锈钢,具有良好的工艺效果。

Abstract: Based on the analysis on the smelting units and processes for high nitrogen stainless steel, the mode and character of nitrogen dissolving into liquid at high temperature-high pressure and the advantage of adding nitrogen by bottom-blowing nitrogen, in laboratory the adding nitrogen test for high nitrogen stainless steel Crl8Mnl8N (/% : 0. 17C, 18. 00Cr, 18. 09Mn, 0. 25Si, 0. 010S, 0. 020P, 1. 07N) is carried out by a 300g liquid bottom-blowing shaped crucible with 0. 5 -1.5 MPa, nitrogen bottom-blowing rate 0. 14 ~0. 24 m³/h at 1 820 ~ 1 910 K. Results show that with 1. 5 MPa and nitrogen bottom-blowing rate 0. 15 m³/h at 1 890 K, as bottom-blowing for 20 ~30 min, the nitrogen content in liquid tends to saturation, it is available to quick-smelt high nitrogen stainless steel in which the nitrogen content is more than 1. 0%. The bottom-blowing technology has nice process effect.

赵定国, 王书桓. 底吹氮气冶炼高氮不锈钢的应用研究[J]. 特殊钢, 2012, 33(5): 15-18.

Zhao Dingguo , Wang Shuhuan. Applied Research on High Nitrogen Stainless Steel Smelting by Bottom-Blowing Nitrogen[J]. Special Steel, 2012, 33(5): 15-18.