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 ›› 2008, Vol. 29 ›› Issue (4): 43-44.

• 工艺技术 • 上一篇    下一篇

T27铁路用钢的研制与开发

叶黎华, 马佐仓  梁建国,  范夕荣 , 马传庆   

  1. 莱芜钢铁股份有限公司特殊钢厂,莱芜271105
  • 收稿日期:2008-01-02 出版日期:2008-08-01 发布日期:2022-12-23
  • 作者简介:叶黎华(1974-),女,工程师,华东冶金学院毕业,特钢的技术管理与产品开发。

Research and Development of Steel T27 for Railway

Ye  Lihua,Ma  Zuocang,Liang  Jianguo,Fan  Xirong, Ma  Chuanqing   

  1. Special Steel Plant, Laiwu lron and Steel Co Ltd, Laiwu     271105
  • Received:2008-01-02 Published:2008-08-01 Online:2022-12-23

摘要: T27铁路用钢(%:0.10~0.16C、0.15~0.25Cr、0.025~0.045Al)为包晶钢。莱钢特殊钢厂采用45%~60%铁水+废钢-50 t电弧炉-LF(VD)-连铸机工艺路线生产T27钢。通过电弧炉热装铁水≥45%,调节供氧量,确保终点碳为0.08%~0.10%,电弧炉出钢过程用部分钢芯铝替代硅锰合金进行脱氧,精炼渣碱度为4,控制精炼吹氩参数,控制中间包钢水过热度20~30℃,结晶器配水量180 m3/h,保护渣黏度为(0.85±0.05)Pa·s,使钢中的氧含量为(15~20)×10-6,连铸坯合格率≥99.95%,钢材质量符合GB/T700-1988标准要求。

关键词: EAF-LF(VD)-CC, ,  终点碳控制, , T27钢, , 包晶, , 保护渣

Abstract:  The steel T27(0. 10~0. 16C,0. 15~0.25Cr,0.025~0.045Al)for railway belongs in peritectic steels which was produced by 45%~60% hot metal + scrap-50tEAF-LF(VD)-caster flow sheet at special steel plant,Lai  Steel. With EAF charging hot metal≥45%,adjusting oxygen supply,ensuring end carbon 0.08%~0. 10%,partly re- placing silicomanganese by steel cored aluminium for refining during EAF tapping,controlling refining basicity 4 and argon  blown parameters,controlling overheating 20~30 ℃ of steel in tundish,mold water rate 180 m³/h and viscosity of shield  slag0.85±0.05 Pa · s,the oxygen content in steel was lower to(15~20)×10-6,the qualified rate of cast billet ≥  99.95%,and the quality of steel products met the requirements of standard GB/T700- 1988.

Key words:  , EAF-LF(VD)-CC,End Point Carbon Control,Steel T27,Peritectic,Shield Slag