摘要
根据某钢厂新设计的八流小方坯连铸机一体式中间包,采用正交试验的方法,利用数值模拟对中间包控流装置的试验方案进行流场、温度场以及流动特征研究,设计出新的控流装置。研究结果表明:未加任何控流装置的中间包内钢液流场不合理,各流流动特征相差较大且温度差异明显,采用优化后的控流装置后,各流钢液的流动模式趋于一致,且温差明显缩小,夹杂物去除率提高。实际冶金效果显著,生产Q235钢各流最大温差为4℃,连浇时间可达26 h且控流装置基本完好。
A block type eight strand tundish is designed and built in a specific steelmaking plant. The experimental plan for the flow control device of the tundish including the flow field, temperature field and flowability has been studied by means of orthogonal experiment method and numerical simulation and thereupon a set of new flow control device is designed and built. Experimental results show that the flow field of the liquid steel in the tundish without any flow control device installed is not so desirable and the difference of the flowability for each strand is quite great and the difference of temperature between each strand also very apparent. Since installation of the optimized flow control device the flow pattern of each strand tends to be consistent and the temperature difference between each strand is clearly reduced and the removal rate of the inclusions is also greatly improved. The practical metallurgical effect is quite conspicuous and the maximum temperature difference between each strand in production of steel Q235 is merely 4℃ and the continuously casting time reaches 26 h and in the period the flow control device is in a very good conditions.
出处
《炼钢》
CAS
北大核心
2012年第3期61-65,共5页
Steelmaking
关键词
八流中间包
数值模拟
结构设计
应用
eight-strand tundish
numerical simulation
structural design
application
