最近,日本川崎炉材公司开发出耐崩裂性能优良的钢包和连铸用水口材质。据介绍,钢包和连铸用Al2 O3 C质下水口的主要损耗形式是内腔扩大和圆周及纵向的龟裂。但从下水口的损伤状况判断,因内腔扩大而报废的情况少,水口中央部的横龟裂或下端的纵龟裂则是主要原因。抑制这种龟裂可 Recently, Kawasaki Furnace Co., Ltd. of Japan has developed ladle and casting nozzle materials with excellent chipping resistance. According to reports, ladle and continuous casting with Al2 O3 C quality of the main drain is the cavity expansion and circumferential and longitudinal cracks. However, judging from the damage state of the water outlet, there are few cases of discard due to enlargement of the cavity, and horizontal cracks in the center of the water hole or longitudinal cracks at the lower end are the main causes. Inhibit this crack can be