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在钢坯的连续铸造中,使铸坯内部的液芯停止在铸坯拉坯轧迹的特点Q处,在该Q点的下流侧形成空芯,在铸坯拉坯行程的后半部用轧辊将空芯部压接轧制,制成实心铸坯。通过采用适当的浇铸温度得到的实心铸坯由外皮激冷细晶和内部的柱状晶构成。另外还公开了将连铸与后续热轧工序结合起来的钢材连铸连轧方法。据此可以获得铸造效率的飞跃提高、质量的改善和铸造壁厚自由的铸坯设备,并且能够将连铸与轧制直接连结,使各种钢材接近于制品
In the continuous casting of a billet, the liquid core in the billet is stopped at the characteristic Q of the billet bloom, the hollow core is formed on the downstream side of the point Q, and the nip is formed by the nip The hollow core is crimped and rolled to a solid slab. The solid slab, obtained by using a suitable casting temperature, is composed of a chilled fine crystal of the skin and an internal columnar crystal. In addition, the continuous casting and rolling process of continuous casting and subsequent hot rolling are also disclosed. Accordingly, it is possible to improve the casting efficiency, improve the quality, and to cast a strand slab having a free wall thickness, and to connect the continuous casting and the rolling directly so as to bring the various types of steel close to the product