论文部分内容阅读
一、前言在连铸操作中,为了避免中包渣的卷入,保证铸坯质量,中间包必须保持一定的钢水液位,当一个浇次结束时,就留有相当的余钢量。中包余钢量直接影响连铸成坯率和钢铁料消耗。多年来,国内外的连铸厂家,为了解决连铸生产中的这一弊端进行了大量的研究和试验。如采用中包扩容法缓和了浇铸过程钢水液位的波动,但不能减少中包余钢量;阶梯式中包底可减少中包余钢量,但牺牲了部分缓冲容量。武钢二炼钢厂曾在1984年对连铸中包进行了扩容改造(扩容65％),
I. Preface In the continuous casting operation, in order to avoid the entrainment of tundish slag and ensure the quality of billet, the tundish must maintain a certain molten steel level, and when the pouring is completed, a considerable amount of residual steel remains. The amount of remaining steel in the package directly affects the casting billet rate and the consumption of steel material. Over the years, domestic and foreign continuous casting manufacturers, in order to solve this shortcoming of continuous casting production conducted a lot of research and experiments. Such as the use of bag expansion method to ease the molten steel casting process fluctuations in the level, but can not reduce the amount of residual steel in the package; the end of the ladder package can reduce the amount of steel in the bag, but sacrifices some of the buffer capacity. The second steelmaking plant of WISCO had carried out expansion and reconstruction of the continuous casting medium package (expansion of 65%) in 1984,