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一、前言发展连铸是我国钢铁工业中一项重要的技术决策。钢的水平连铸是把结晶器水平地连接在中间包侧壁下部的拉坯方向上,中间包内的钢水在结晶器内冷却,从结晶器连续地拉出铸坯的一种方法。结晶器是水平连铸机的心脏。在工艺上对它的要求是:在尽可能高的拉速下,保证结晶器出口处有足够的凝固壳厚度和铸坯断面周边厚度的均匀性。在水平连续浇铸过程中,钢液是从中间包经过浇注水口和分离环而流进结晶器的。因此,浇注水口和分离环的形状尺寸,以及它们和结晶器的断面比,
I. Introduction The development of continuous casting is an important technological decision in China’s steel industry. The horizontal continuous casting of steel is a method of horizontally connecting the crystallizer in the drawing direction at the lower part of the side wall of the tundish, cooling the molten steel in the tundish in the crystallizer, and continuously pulling the slab from the crystallizer. The mold is the heart of a horizontal caster. In the process of its requirements are: at the highest possible speed under the mold to ensure that there is sufficient solidified shell outlet thickness and thickness uniformity of the periphery of the slab section. In horizontal continuous casting, molten steel flows from the tundish through the casting nozzle and the separating ring into the mold. Therefore, the pouring nozzle and the separation ring shape and size, and their mold and the cross-section ratio,