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梅山钢铁公司炼钢厂有 2座 15 0t的LD转炉 ,配 40t板坯连铸中间包 .为了了解和掌握中间包内部过程的基本特征 ,在实际中间包内对流动控制装置、钢水停留时间分布及熔池内温度分布情况进行了现场测试 ,并结合数学和物理模拟方法进行分析 .研究结果表明 :钢包与中间包内钢水的温差对中间包内钢水的流动状态有很大影响 ,进而影响着中间包内许多冶金过程 ;实际中间包熔池内温度分布不均 ,即使没有任何流动控制装置 ,熔池内上部温度也高于下部温度 ,现场测定的停留时间曲线与传统的等温水模型实验结果相差较大 ;在大多数生产条件下 ,中间包内的流动是非等温流动 ,以等温条件为前提的挡板设计、控制参数可能与实际情况不符 ,应该重新鉴别
Meishan Iron and Steel Company Steel Works has two 150t LD converter with 40t slab continuous casting tundish.In order to understand and grasp the basic characteristics of the tundish internal process in the actual tundish on the flow control device, And the temperature distribution in the weld pool were analyzed in field and combined with mathematical and physical simulation methods.The results show that the temperature difference between the molten steel in the ladle and the tundish has a significant impact on the flow of molten steel in the tundish and thus affects the middle There are many metallurgical processes in the package. The temperature distribution in the actual tundish is uneven. Even without any flow control device, the temperature in the upper part of the weld pool is higher than that in the lower part. The measured residence time curve differs greatly from the traditional isothermal water model ; Under most production conditions, the flow in the tundish is non-isothermal flow. The baffle design based on the isothermal condition may not be in accordance with the actual conditions and should be re-identified