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 (3): 38-40.

• 工艺技术 • 上一篇    下一篇

弹簧钢100 t DC EAF-LF-VD流程无铝脱氧工艺实践

余国松1,杜建新2   

  1. 1杭州钢铁集团公司1技术中心;2昌兴公司,杭州310022
  • 收稿日期:2009-11-19 出版日期:2010-06-01 发布日期:2022-11-07
  • 作者简介:余国松( 1967-),男,高级工程师,1990年武汉钢铁学院毕业,冶金工艺和新产品开发。

Process Practice of Non-Aluminum Deoxidation for Spring Steel Steelmaking Production by 100 t DC EAF-LF -VD Flow Sheet

Yu Guosong1, Du Jianxin2   

  1. 1 Technology Center; 2 Changxin Co, Hangzhou Iron and Steel Group Co, Hangzhou 310022
  • Received:2009-11-19 Published:2010-06-01 Online:2022-11-07

摘要: EAF-LF-VD冶炼60Si2MnA和55CrSiA弹簧钢时EAF出钢过程加17~23 kg/t低铝硅铁(Al含量≤0.50%)脱氧,LF补加3~6 kg/t硅铁,并控制精炼渣的碱度≤2.5,可控制[Als]≤60×10-6,总[O](9~20)×10-6,A类夹杂级别≤0.5,B类≤0.5,C类≤1.5,D类≤0.5。用该脱氧工艺冶炼的钢水可浇注性强,适合大批量工业性生产。

关键词: 60Si2MnA、55CrSiA弹簧钢, 无铝脱氧, 工艺实践

Abstract: In spring steel 60Si2MnA and 55CrSiA steelmaking by EAF-LF-VD, it is available to control [ Als ] ≤ 60 x 10-6 , the total [O] (9 〜20) x 10-6 , and get the rating of A series inclusion ≤0.5 , B series ≤0. 5 , C series ≤ 1. 5 and D series ≤0. 5 by adding 17 ~ 23 kg/t low aluminum ferrosilicon (Al content ≤0. 50% ) during EAF tapping, adding more 3 ~6 kg/t ferrosilicon during LF refining and controlling basicity of refining slag ≤2. 5. The molten steel produced by this deoxidation process has excellent castability being available for mass production.

Key words: Spring Steel 60Si2MnA, 55CrSiA, Non-Aluminum Deoxidation, Process Practice