60t转炉-60t LF冶炼GCr15轴承钢氧含量的控制

特殊钢 ›› 2006, Vol. 27 ›› Issue (3): 49-50.

60t转炉-60t LF冶炼GCr15轴承钢氧含量的控制

邢梅峦^1,2，李晶¹

1北京科技大学冶金与生态学院，北京100083;
2石家庄钢铁有限责任公司，石家庄050031

收稿日期:2005-12-20 出版日期:2006-05-08 发布日期:2023-03-11
作者简介:邢梅峦(1971-),女，高级工程师，1993年唐山工程技术学院毕业，从事冶炼及连铸工艺研究。

Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 60 t Converter-60 t LF

Xing Meiluan^1,2， Li Jing¹

1 School of Metallurgical and Ecological Engineering,University of Science and Technology,Beijing 100083;
2 Shijiazhuang Iron and Steel Co Ltd, Shijiazhuang 050031

Received:2005-12-20 Published:2006-05-08 Online:2023-03-11

摘要/Abstract

摘要： 石钢采用60 t转炉-60 t LF-150 mm×150 mm方坯连铸工艺生产GCr15轴承钢。工艺实践表明,采用高拉碳操作法,转炉平均终点碳含量为0.30%;改进工艺控制转炉出钢下渣量;LF精炼时采用CaO-SiO₂-Al₂O₃高碱度渣;连铸时钢包到中间包采用套管和吹氩保护,中间包水口使用密封垫,有效地控制了钢中的氧含量。统计表明25炉轴承钢氧含量为(6.5~11.9)×10^-6,平均氧含量为10.2×10^-6。

Abstract: The bearing steel GCrl5 is produced by 60 t converter -60 t ladle furnace(LF)- 150 mm×150 nm billet concasting process at Shijiazhuang Steel. The process practice showed that the oxygen cortent in steel was effectively controlled by catch carbon practice with average converter end [C] 0.30%,improving process to control slagging amount during corverter tapping,using CaO-SiO₂-Al₂O₃ high basicity slag in LF refining,adopting casing tube and argon blown protection from ladle to tundish and using sealing washer at tundish nozzle.The statistic results showed that the oxygen content in bearing steel,25 heats,was(6.5~11.9)× 10-⁶,the average oxygen content was 10.2×10-⁶.

邢梅峦, 李晶. 60t转炉-60t LF冶炼GCr15轴承钢氧含量的控制[J]. 特殊钢, 2006, 27(3): 49-50.

Xing Meiluan, Li Jing. Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 60 t Converter-60 t LF[J]. Special Steel, 2006, 27(3): 49-50.