异钢种连浇研究进展及发展方向

Research progress and development direction of steel grade transition

针对高附加值钢种的需求量较小,一个浇次需要生产不只一个钢种的现状,梳理了国内企业进行的异钢种连浇工业试验,描述了水模型试验和数值模拟在异钢种连浇过程的应用,主要总结了中间包液位高度、非等温浇注、中间包内腔结构、结晶器流体域结构、连铸机拉速和电磁制动等因素对交接坯长度的影响。评价了目前主流的四种交接坯判定模型,最终提出了制定异钢种连浇过程规范和研究异钢种连浇过程新模型的思路。结果表明,异钢种连浇实现了新钢种的高效生产,降低了企业生产成本,同时将人工智能学科与冶金学科结合了起来,为异钢种连浇过程提供了一个新的发展方向。

The demand for high value-added steel grades is relatively low,and more than one steel grade needs to be produced per casting sequence.Industrial tests of the steel grade transition carried out by domestic enterprises is sorted out in this paper.The application of water model experiment and numerical simulation in the steel grade transition is described.And the influence of tundish level,non-isothermal casting,tundish furniture,mold fluid domain structure,casting speed and electromagnetic braking on the length of transition billets is mainly summarized.After evaluating the four main mathematical models for judging the steel grade transition,the idea of formulating the specification for the steel grade transition and studying the new model for the steel grade transition is finally put forward.It can be concluded that the steel grade transition realizes the efficient production of new steel grades,reduces the production cost of enterprises.combining the disciplines of artificial intelligence and metallurgy practice can provide a new development direction for metallurgical engineering.