Process Practice on Control of Nitrogen Content in High Carbon Steel SWRH82B Produced by 130 t BOF-LF-150 mm x 150 mm CC Billet Flow Sheet

Special Steel ›› 2015, Vol. 36 ›› Issue (2): 25-27.

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Process Practice on Control of Nitrogen Content in High Carbon Steel SWRH82B Produced by 130 t BOF-LF-150 mm x 150 mm CC Billet Flow Sheet

Xing Meiluan^1,2 , Bao Yanping¹ , Lin Lu¹

1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ；
2 Aosen Iron and Steel Co Ltd, Xinji 052360；

Received:2014-10-13 Online:2015-04-01 Published:2022-08-23

130 t BOF-LF-150 mm x 150 mm CC 流程控制高碳钢SWRH82B氮含量的工艺实践

邢梅峦^1,2，包燕平¹，林路¹

1. 北京科技大学冶金与生态工程学院，北京 100083 ；
2. 澳森钢铁有限公司，辛集 052360；

作者简介:邢梅峦(1971-)，女，博士生(北京科技大学)，高级工程师，1993年河北理工大学(本科)毕业，品种钢工艺技术研究。

Abstract

Abstract: 0.79%-0.86% C high carbon steel SWRH82B is produced by 130 t top and bottom combined blown converter-LF-8-strand 150 mm x 150 mm billet concasting process. With the measures including using higher foaming slag height in converter blowing process, lance level higher than other steel grades by 100-150 mm, bottom argon blowing rate 0.02-0.05 m³/(t • min) in whole converter melting process and round flow tapping, in LF refining rapid slagging and using suitable argon blowing rate 20-30 m³/h, and whole process shielding casting, the nitrogen content in steel is availably controlled. The analysis of nitrogen in steel of 205 heats show that the nitrogen content in steel is 13.7 X 10^-6-37.4 x 10^-6 and the average nitrogen content in steel is 23.3 x 10^-6

Key words: 130 t Top and Bottom Combined Blown Converter-LF-CC Flow Sheet, High Carbon Steel SWRH82B, Nitrogen Content, Control, Process Practice

摘要： 0.79%~0.86% C SWRH82B高碳钢的生产流程为130 t顶底复吹转炉-LF-8流150 mm×150 mm坯连铸工艺。通过转炉吹炼时采用较高泡沫渣高度,终点枪位较其他钢种高100~150 mm,转炉全程底吹氩0.02~0.05 m³/（t·min）,圆流出钢,LF精炼时快速成渣,合适的吹氩量20~30 m³/h,连铸全程保护等工艺措施,有效控制钢中氮含量,205炉氮含量分析表明,钢中氮含量为13.7×10^-6~37.4×10^-6,平均氮含量为23.3×10^-6

关键词: 130 t 顶底复吹转炉-LF-CC流程, SWRH82B高碳钢, 氮含量, 控制, 工艺实践

Xing Meiluan , Bao Yanping , Lin Lu. Process Practice on Control of Nitrogen Content in High Carbon Steel SWRH82B Produced by 130 t BOF-LF-150 mm x 150 mm CC Billet Flow Sheet[J]. Special Steel, 2015, 36(2): 25-27.

邢梅峦, 包燕平, 林路. 130 t BOF-LF-150 mm x 150 mm CC 流程控制高碳钢SWRH82B氮含量的工艺实践[J]. 特殊钢, 2015, 36(2): 25-27.

References

[1] Sychkow A B,Zhigarev M A,Perchatkin A V,et al. High-Carbon Wire Rod Made of High-Chromium Steel [J]. Metallurgist, 2006,50(3/4)：183-188.
[2] Zhang J Q, Liang Y L, Xiang S, et al. Effect of Heat Treatment Process on Microstructure and Mechanical Properties of SWRH82B Wire Rod [J]. Advanced Materials Research, 2010,97-101: 752-755.
[3] Cameiro Filho C J,Mansur M B,Modenesi P J,et al. The Effect of Hydrogen Release at Room Temperature on the Ductility of Steel Wire Rods for Pre-Stressed Concrete[J]. Materials Science and Engineering ,2010 ,527 (18/19) ：4947-4952.
[4] Sychkov A B,Zhigarev M A,Zhukova S Y,et al. Production of Wire Rod for High-Strength Reinforcing Cord [ J]. Steel in Translation, 2010,40(1)：78-81.
[5] 桂美文，覃之光.82B高碳钢连铸坯中心偏析及线材质量的改善[J].炼钢,2005,21(3)：14
[6] 张翔.高碳钢82B线材的质量改进[J].轧钢,2001,18(4):20- 23.
[7] 刘恩铤.影响PC钢盘条塑性指标的因素浅析[J].天津冶金， 2002(1):16-20.
[8] 孔祥涛，周德，陈宏.大规格高强度SWRH82B盘条拉拔过程断丝原因分析[J].钢铁,2012,47(2) ：4448.
[9] 李殿明，邵明天，杨宪礼.连铸结晶器保护渣应用技术[M].北京:冶金工业出版社,2008.
[10] 崔阳，南晓东，冯军，等.转炉冶炼末期泡沫渣高度控制技术[J].首钢科技,2010(1):5-8.
[11] Kusuhiro Mukai . Takashi Nakamura and Hidetoshi Terashima. Slag Foaming in Reaction between Molten Slag Containing Iron Oxide and Iron of High Carbon Concentration [J]. Tetsu-to-Hagane, 1992,78(11)：1682-1689.
[12] 许克亮，吴波.天钢SWRH82B高碳钢盘条的技术质量进步[J].天津冶金,2007(4):6-10.
[13] 蔡开科，孙彦辉，田志红,炼钢-精炼-连铸过程钢水超纯净度控制战略[J].中国冶金,2012,22(4) ：1-7.
[14] 周德光，罗伯钢，曾立，等.钢中氮的控制及其对质量的影响[J].炼钢,2005,21(1)-43^6.
[15] 李晶，张立，傅杰，等.连铸过程中钢液增氮影响因素的试验研究[J].北京科技大学学报,2002,24(4):4004)2.

Process Practice on Control of Nitrogen Content in High Carbon Steel SWRH82B Produced by 130 t BOF-LF-150 mm x 150 mm CC Billet Flow Sheet

130 t BOF-LF-150 mm x 150 mm CC 流程控制高碳钢SWRH82B氮含量的工艺实践

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