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 ›› 2005, Vol. 26 ›› Issue (5): 44-47.

• 工艺技术 • 上一篇    下一篇

湘钢预应力钢丝用钢SWRH82B盘条的质量控制

王贵容1,薛正良2   

  1. 1. 湘潭钢铁集团公司,湘潭 411101;
    2. 湖北省钢铁冶金重点实验室,武汉科技大学,武汉 430081;
  • 收稿日期:2005-04-22 出版日期:2005-10-01 发布日期:2023-04-04
  • 通讯作者: 薛正良
  • 作者简介:王贵容(1969-),男,工程师,1995年毕业于鞍山科技大学钢铁冶金专业,武汉科技大学在读硕士研究生。主要从事连铸工艺及新钢种开发工作。

Quality Control of SWRH82B Steel Coil for Prestressed Wire at Xiangtan Steel

Wang Guirong1 , Xue Zhengliang2   

  1. 1. Xiangtan Iron &Steel Group Co.,Lid., Xiangtan 411101;
    2. Hubei Ironmaking and Steelmaking Key Laboratory,Wuhan University of Science and Technology,Wuhan 430081;
  • Received:2005-04-22 Published:2005-10-01 Online:2023-04-04
  • Contact: Xue Zhengliang

摘要: 湘钢采用铁水预处理-80t顶底复吹转炉-90 t LF-150 mm ×150 mm方坯连铸机-高速线材轧机成功开发出Φ11~13mm的预应力钢丝和钢绞线用钢SWRH82B(%:0.79~0.83C,0.70~0.80Mn,0.17~0.22Cr,≤0.020S,≤0.025P)盘条。实践表明,中间包钢水过热度控制在15~25(30)℃,拉坯速度2.6~2.9m/min,拉坯速度波动值≤0.2m/min,二冷水量1.95~2.10L/kg,可使铸坯中心碳偏析比(铸坯中心碳含量/钢水碳含量)≤1.04,盘条索氏体率≥85%,实际拉拔和捻股过程中104m的断丝率≤1次。

关键词: SWRH82B, 预应力钢丝, 连铸坯, 盘条, 质量控制

Abstract: The φ11~13 mm SWRH82B steel coil(0.79~0.83C,0.70~0.80Mn,0. 17~0.22Cr,≤0.020S,≤0.025P) for prestressed steel wire and stranded wire has been successfully developed by hot metal pretreatment - 80 t top and bottom combined blown converter - 150 mm×150 mm billet concasting-high speed wire-rod mill process at Xiangtan Steel.The production practice with overheating temperature of liquid steel in tundish controlled between 15 ℃ and 25(30) ℃,casting speed 2.6~2.9 m/min,vibrated value of casting speed ≤ 0.2 m/min,and amount of secondary water cooling between 1.95 L/kg and 2.10 L/kg,the centre carbon segregation ratio of billet(carbon content at centre of billet / carbon content of liquid steel) shall be ≤ 1.04,the sorbite proportion of SWRH82B steel coil ≥ 85%,and during 10000 m drawing and stranding procedure the wire broken ratio ≤ one time.

Key words: SWRH82B, Prestressed Steel Wire, Concasting Billet, Coil, Quality Control