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随着对钢质量的要求越来越严格,以及在钢包冶金方面的成功,已使人们不能再把中间包作为一个简单的容器使用,而是力争在中间包中进一步去除夹杂物,并防止钢液的再污染。中间包冶金有独特的理论特点和研究方法。作为一种连续操作的反应器,与转炉、电炉及钢包等间歇操作反应器的概念是不同的。中间包内基本的物理现象是钢液的流动,其他冶金过程包括钢液中夹杂物的去除、卷渣、温度和成分的均匀化等,都是流动的钢液中进行的。因此研究中间包内钢液的流动是中间包冶金的基础。承钢公司于2008年建成2机2流板坯连铸机,中间包容量45t,为了提高钢的清洁度,生产高质量产品,承钢对中间包进行控流装置试验,结合现场生产实际,优化设计中间包内部结构,从而保证中间包内死区比例小,以促进大型夹杂物的去除,延长钢液停留时间,促进温度和成分的均一,提高铸坯质量。
With the stricter requirements on the quality of steel and the success in ladle metallurgy, it has become impossible to use the tundish as a simple container anymore but to strive to further remove the inclusions in the tundish and to prevent steel Liquid re-contamination. Tundish metallurgy has unique theoretical features and research methods. As a continuous operation of the reactor, and the converter, electric furnace and ladle batch operation of the reactor concept is different. The basic physical phenomenon in the tundish is the flow of molten steel. Other metallurgical processes include the removal of inclusions in the molten steel, the entrainment of slag, the homogenization of temperature and composition, and the like, all in flowing liquid steel. Therefore, studying the flow of molten steel in tundish is the basis of metallurgy in tundish. Chengbei Steel built a 2-machine 2-flow slab caster in 2008 with a tundish capacity of 45 tons. In order to improve the cleanliness of the steel and produce high quality products, Cheng Steel tested the tundish for flow control devices. In combination with the actual production in the field, Optimize the design of the tundish internal structure, so as to ensure a small proportion of the dead zone in the tundish to promote the removal of large inclusions, extend the residence time of molten steel, promote the uniformity of temperature and composition, and improve the quality of the billet.