ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2010, Vol. 31 ›› Issue (1): 33-35.

• 工艺技术 • 上一篇    下一篇

转炉-LF和铁水预处理-转炉-钢包吹氩对耐候钢冶金质量的影响

郭宏海1, 宋波1, 刘西峰2, 赵沛3   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2唐山建龙钢铁有限公司,唐山064200;
    3钢铁研究总院,北京100081
  • 收稿日期:2009-07-03 出版日期:2010-02-01 发布日期:2022-10-25
  • 作者简介:郭宏海(1981-),男,博士生,钢铁材料和工艺研究

Effect of Converter-LF Refining and Hot Metal Pretreatment Converter-Ladle Argon Stirring Process on Metallurgical Quality of Weathering- Resisting Steel

Guo Honghai1, Song Bo1, Liu Xifeng2 ,  Zhao Pei3   

  1. 1 Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083 ;
    2 Tangshan Jianlong Steel Corp Ltd, Tangshan 064200; 3 Central Iron and Steel Research Institute, Beijing 100081
  • Received:2009-07-03 Published:2010-02-01 Online:2022-10-25
  • Supported by:
    国家973计划资助项目(2004CB619107)

摘要: 进行了60 t转炉(钢水温度1653℃)-LF精炼(渣碱度2.5~3.0、喂Al线、吹氩)和铁水预处理([S]≤0.010%)-60 t转炉(钢水温度1670℃,出钢过程加80~100 kg精炼渣)-钢包喂A1线、吹氩≥8 min两种工艺冶炼耐候钢SPA-H(%:≤0.12C、0.30~1.25Cr、0.25~0.55Cu)的试验。62炉生产结果表明,有LF精炼炉次吹氩前[O]37.7×10-6,喂丝量25 kg,平均[S]0.014%,无LF精炼吹氩前[O]53.3×10-6,喂丝量33.9 kg,平均[S]0.017%,两种工艺生产的耐候钢力学性能和夹杂物级别均达到要求,但无LF工艺有利于提高生产率,降低物料消耗。

关键词: 耐候钢, 转炉, LF精炼, 钢包吹氩

Abstract: Test to melt weathering-resisting steel SPA-H ( % : W0. 12C, 0. 30 ~ 1. 25Cr, 0. 25 ~ 0. 55Cu) by both processes of 60 t converter (liquid temperature 1 653℃ )- LF refining (slag basicity 2. 5 ~3. 0, feeding Al wire, Ar stirring) and hot metal pretreatment ([S] ≤0. 010% ) -60 t converter (liquid temperature 1 670 °C , adding 80 ~ 100 kg refining slag during tapping) -ladle feeding Al wire and Ar stirring ≥8 min has been carried out. Results by 62 heats practice show that for heats with LF refining, [O] before argon stirring is 37. 7 x 10 -6, feeding wire 25 kg, average [S] is 0. 014% ; and for heats without LF refining, [O] before argon stirring is 53. 3 X 10 -6 , feeding wire 33. 9 kg, average [S] is 0. 017% ; the mechanical properties and inclusion rating of weathering-resisting steel produced by both processes all meet the requirement, but the process without LF refining is available to increase productivity and reduce consumption of materials.