摘要
通过数值模拟对某钢厂新设计的4机4流大方坯连铸机的不同结构的中间包进行钢液流场、流动特性及温度场的研究,并以此优化出最佳控流装置。研究结果表明,为满足4流大方坯中间包对流场的要求,采用最佳方案(湍流控制器+带导流孔的"V"型挡渣墙+挡坝组合的控流方式),延长了近流水口响应时间及平均停留时间,各水口钢液的流动模式趋于一致,中间包内钢液的流动特征得到明显改善,各流钢液的最大温差缩小到4K,温度均匀。
The flow field, fluid flow characteristics and heat transfer were studied by numerical simulation in four- strand tundish with different configuration in bloom continuous casting in steel works, and the best control devices were optimized. The results showed that, in order to meet the demands of flow field and temperature field, the best control devices were used. After the best flow control devices （bumper, ＂V＂ retaining wall with deflector hole de- vices and dam） were used, response time and average residence time of close flow were prolonged, flow pattern of each nozzle was consistent and flow characteristics were improved efficiently. Extremum of the largest temperature difference among each strand was reduced to 4 K and temperature of the molten steel in the tundish was even.
出处
《连铸》
2013年第5期7-12,共6页
Continuous Casting
关键词
大方坯
中间包
数值模拟
流场
温度场
bloom casting
tundish
numerical simulation
flow field
temperature field
