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 ›› 2007, Vol. 28 ›› Issue (1): 51-52.

• 工艺技术 • 上一篇    下一篇

酒钢120 t转炉-LF-CC工艺生产L360管线钢的实践

李积鹏,  马  杰,  张有余   

  1. 1西安建筑科技大学冶金工程学院,西安710055
    2酒钢集团公司钢铁研究院,嘉峪关735100
  • 收稿日期:2006-06-30 出版日期:2007-01-01 发布日期:2023-01-16
  • 作者简介:李积鹏(1981-),男,助理工程师,硕士研究生,2002年西安建筑科技大学毕业,主要从事炼钢生产新技术、新工艺研究。

Practice of L360 Pipeline Steel Production by 120 t Converter-LF-CC Process at Jiuquan Steel

Li  Jipeng,  Ma  Jie,   Zhang  Youyu   

  1. 1 School of Metallurgical Engineering,Xian University of Architecture and Technology,X'an 710055;
    2 Research Institute of Iron and Steel, Jiuquan Iron and steel Co Ld,Jiayuguan 735100
  • Received:2006-06-30 Published:2007-01-01 Online:2023-01-16

摘要: 通过铁水脱硫-120t转炉冶炼-LF精炼(吹氩、喂线)-160(220)mm板坯连铸-2架炉卷轧机,轧制生产 了1.6~12.7mm管线钢L360带材(%:0.08~0. 12C 、0.10~0.25Si 、1. 10~1.30Mn 、≤0.015P 、≤0.008S 、0.03~ 0.05Nb)。采用高拉碳补吹法控制转炉终点[C]0.04%;LF精炼时用AlMnFe、MnFe和NbFe合金化,并喂Al线和 SiCaBa线;连铸采用全程氩封注流保护浇铸等工艺措施。生产统计结果表明,L360管线钢[0]为(10~15)×10-6, [N](14~35)×10-6,[H](1.2~1.6)×10-6, Σ [N+H+0]≤51.6×10-6;该钢的屈服强度为425~460 MPa,抗拉 强度505~525 MPa,屈强比0.81~0.88,均达到标准要求。

关键词: 转炉-LF-CC流程,  , L360管线钢, 铌微合金化

Abstract: The1.6~12.7 mm strip of L360 pipeline steel(0.08~0. 12C,0.10~0.25Si,1.10~1.30Mn,≤ 0.015P,≤0.008S,0.03~0.05Nb)was produced by hot metal desulphurization - 120 t converter melting - LF refining (argon stirring,feeding wire)- 160(220)mm slab concasting -2-stand Steckel mill flow sheet.The production data sta- tistic results showed that with using the measures such as catch carbon and reblow practice to control converter end [C] 0.04%,AlMnFe,MnFe and NbFe alloying and feeding Al wire and SiCaBa wire in LF refining,argon shielded casting in whole slab casting,the[O]of L360 pipeline steel was(10~15)×10-6,[N](14~35)×10-6,[H](1.2~1.6)× 10-6  and  Σ [N+H+0]≤51.6×10-6;yield strength(YS)of the steel was 425~460 MPa,ultimate tensile strength (UTS)505~525 MPa,and ratio of YS-UTS 0.81~0.88,all up to standard.

Key words: Converter-LF-CC Flow Sheet, L360 Pipe Line Steel, Niobium Microalloying