一、绪言水岛制铁所第5、第6连铸浇注低碳铝镇静钢的比例较高,水口堵塞现象较多,对操作、成品质量影响也较大。特别是5号连铸,为了提高生产效率,产品质量进行了各种浇注技术的革新使浇注高速化。相形之下对防止水口堵塞就成了一大课题。最近,他们从操作方面研究了水口堵塞的原因,同时他们还研究了关于从中间罐吹入气体的方法。下面谈到的就是其 I. INTRODUCTION The proportion of low-carbon aluminum killed steel cast by No. 5 and No. 6 continuous castings in Shuidao Iron & Steel Co., Ltd is high, the phenomenon of blockage of the water outlet is more, and the impact on the quality of operation and finished products is also larger. In particular, the No. 5 continuous casting, in order to improve production efficiency, product quality carried out a variety of casting technology innovation to pouring speed. In contrast to prevent the nozzle blockage has become a major issue. Recently, they have studied the causes of nozzle blockages from an operational point of view, and they have also studied ways to blow gas in from the intermediate tank. Here’s what it is