方坯高效连铸新型结晶器传热分析与应用  

Heat Transfer Analysis and Application of High Efficiency Continuous Casting Novel Mold for Billet

作　　者：李富帅 谢长川 郭春光 钱亮 倪赛珍 Li Fushuai;Xie Changchuan;Guo Chunguang;Qian Liang;Ni Saizhen(CCTEC Engineering Co.,Ltd.,Wuhan 430073;Yangchun New Iron and Steel Co.,Ltd.,Yangchun 529600)

机构地区：[1]中冶南方连铸技术工程股份有限公司,湖北武汉430073 [2]阳春新钢铁有限责任公司,广东阳春529600

出　　处：《冶金设备》2020年第1期46-51,共6页Metallurgical Equipment

摘　　要：提出了方坯高效连铸结晶器有效结构形式,并通过ansys有限元软件,建立高效连铸结晶器与传统结晶器铜管的传热模型,并对其凝固传热以及温度场进行计算对比,重点讨论不同结构形式的结晶器在传热效率及传热均匀性方面的差异,并讨论其对高拉速下坯壳凝固的影响。结果表明,高效结晶器可以使得结晶器的传热效率提高7.8%,并且使得结晶器铜管热面最高温度降低100℃,热面温差降低到5℃以下。作者根据该理论,通过有限元优化设计,设计制造出方坯高效连铸结晶器,并应用于某钢厂155mm方断面的铸机上,稳定生产拉速达到4m/min,最大拉速达到4.46m/min。In this paper,an effective structure of high efficiency continuous casting mould for billet is proposed.Through ANSYS finite element software,a heat transfer model of high efficiency continuous casting mould and copper tube of traditional mould is established.The solidification heat transfer and temperature field are calculated and compared.The differences of heat transfer efficiency and heat transfer uniformity of different structure mould are discussed,and The effect of high casting speed on shell solidification of the billet is also discussed.The results show that the heat transfer efficiency of the mould can be increased by 7.8%with the high efficiency mould,and the maximum temperature of the hot surface of the copper tube in the mould can be reduced by 100 C,and the temperature difference of the hot surface can be reduced to less than 5 C.Based on this theory,a high efficiency continuous casting mould for billet has been designed and manufactured by means of finite element optimization design.The mould has been applied to a 155 mm square section caster in a steel plant.The stable casting speed can reach 4 m/min and the maximum casting speed can reach 4.46 m/min.

关 键 词：高效连铸 结晶器 强化冷却 小方坯 高拉速 

分 类 号：TF777.2[冶金工程—钢铁冶金]