近年来在冶炼强化过程中,由于普遍提高了出钢温度,加大了钢桶的容量和延长了浇铸时间的结果,更显着地恶化了塞头砖的使用条件。因此,目前国内外对提高塞头砖的质量,减少塞头砖在使用时的掉头和破裂,造成漏钢事故方面,正进行着大量的研究和探索工作。根据一些研究结果指出:提高塞头砖的热稳定性是减少塞头砖在铸锭时产生破裂和变 In recent years, in the process of smelting and strengthening, as a result of generally increasing the tapping temperature, increasing the capacity of the steel drum and prolonging the casting time, the use conditions of the plug head brick are significantly worsened. Therefore, at home and abroad, a great deal of research and exploration work is going on in improving the quality of plug bricks, reducing the head wrecking and rupturing when plug bricks are in use and causing breakout accidents. According to some research results, it is pointed out that improving the thermal stability of plug bricks is to reduce the rupture and change of plug bricks