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 ›› 2009, Vol. 30 ›› Issue (4): 5-7.

• 试验研究 • 上一篇    下一篇

圆坯连铸凝固传热数学模型及应用

唐海燕1,李京社1,韩丽敏1,温德松1,2   

  1. 1北京科技大学冶金与生态工程学院,北京100083;
    2天津钢管集团有限公司炼钢厂,天津300301
  • 收稿日期:2009-01-12 出版日期:2009-08-01 发布日期:2022-12-20
  • 作者简介:唐海燕(1970-),女,博士,讲师,研究方向为纯净钢的工艺与理论。

Math Model and Application for Heat Transfer during Solidification of Concasting Round Bloom

Tang Haiyan1, Li Jingshe1, Han Limin1 ,Wen Desong1,2   

  1. 1 School of Metallurgical and Ecological Engineering, University of Science and Technology, Beijing 100083 ;
    2 Steelmaking Plant, Tianjin Pipe Co Ltd, Tianjin 300301
  • Received:2009-01-12 Published:2009-08-01 Online:2022-12-20

摘要: 建立了34Mn5V钢Φ400 mm圆坯连铸过程中的凝固传热数学模型,运用该模型计算得到的二冷各区控制点的表面温度与现场实测结果一致。用该模型计算得出,钢水过热度对铸坯表面温度影响较小,拉速和二冷区冷却强度对铸坯温度影响较大。生产实践表明,当生产Φ400 mm铸坯的拉速达到0.4~0.6 m/min时,自动控制的二次冷却制度能满足工业连铸要求,可得到优质铸坯。

关键词: 二冷控制, 传热模型, 圆铸坯, 表面温度

Abstract: Math model of heat transfer during solidification of Φ400 mm concasting round bloom of steel 34Mn5V has been established and surface temperature values at controlling location of each secondary zone calculated by the model showed no difference to that measured at production ground. It is obtained with calculation by model that the effect of liquid superheating extent on surface temperature of bloom is minor but the effect of casting speed and secondary cooling intensity on temperature of bloom is larger. Production practice showed that the automatic control secondary cooling system met the requirements of industrial concasting Φ400 mm round bloom with cast speed 0. 4 -0. 6 m/min to get quality cast bloom.