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 (6): 28-30.

• 工艺技术 • 上一篇    下一篇

高压气瓶钢34Mn2V 200 mm×200 mm轧坯角部拉裂缺陷的控制工艺

陈永1,2,杨素波3,朱苗勇1   

  1. 1 东北大学材料与冶金学院,沈阳110004;
    2攀枝花钢铁研究院,攀枝花617000;
    3攀枝花新钢钒股份有限公司提钒炼钢厂,攀枝花617062
  • 收稿日期:2008-05-07 出版日期:2008-12-01 发布日期:2022-12-07
  • 作者简介:陈 永(1969-),男,博士生,教授级高工,1990年东北大学毕业,连铸工艺和铸坯质量控制技术研究。

Control Process on Corner Crack of 200 mm×200 mm Hot Rolled Billet of Steel 34Mn2V for High Pressure Bottle

Chen Yong1,2,Yang Subo3,Zhu Miaoyong1   

  1. 1 School of Materials and Metallurgy,Northeastern University,Shenyang 110004;
    2 Panzhihua Iron and Steel Research Institute,Panzhihua 617000;
    3 Vanadium Recovery Steelmaking Plant,Panzhihua New Steel Vanadium Co Ltd,Panzhihua 617062
  • Received:2008-05-07 Published:2008-12-01 Online:2022-12-07

摘要: 通过工艺对比分析了34Mn2V高压气瓶用钢中间包浇铸温度、结晶器液面波动、[Als]、中问包炉次和280 mm×380 mm连铸坯拉速波动对轧坯角部拉裂的影响。提出减小RH加Al量,按[Als]0.01%控制;RH后喂Ca-Si线;适当提高连铸钢液温度,控制中间包钢水温度1 520~1 530℃;控制浇铸过程塞棒吹氩量≤10 L/min;结晶器液位波动±3 mm等工艺措施。应用结果表明,轧坯角部拉裂缺陷率由原来的23.57%降至1.21%。

关键词: 高压气瓶钢34Mn2V, 大方坯, 轧坯角裂 , 工艺控制

Abstract: The effect of temperature of liquid steel in tundish during casting,liquid level fluctuation in mold,[Als], sequence heats of tundish and fluctuation of 280 mm×380 mm bloom casting speed on rolled billet comer cracks of steel 34Mn2V for high pressure bottle was analyzed by processes comparison. The process measures have been adopted including decreasing adding Al amount,controlling[Als]0.01%,feeding Ca-Si wire after RH,suitably increasing liquid steel temperature during cast,controlling liquid steel temperature 1520~1530 ℃ in tundish and stopper argon blown rate ≤10 L/min during casting,and controlling mold liquid level fluctuation ±3 mm.Application results showed that the hot rolled billet comer cracks rate decreased from original 23.57% to 1.21%.

Key words: Steel 34Mn2V for High Pressure Bottle,Bloom,Rolled Billet Comer Cracks,Process Control