摘要
为了搞清连铸含钛不锈钢时浸入式水口CaO.TiO2型结瘤的机理,在实验室碳管炉中进行了铝碳质耐材棒浸入321不锈钢钢液的实验。结果表明,结瘤是由于钢中CaO.TiO2等夹杂物沉淀附着在耐材棒表面形成的。如果存在二次氧化,钢中夹杂物数量明显增加,相应形成的结瘤层也较厚。提高钢液温度50℃对钢中生成的氧化物夹杂的类型没有影响,但是,能显著减少结瘤层中的凝固金属,使结瘤层减薄。
In order,to understand the mechanism of CaO-TiO2 type clogging of SEN in continuously casting Ti-bearing stainless steel experiments in which alumina graphite rod was immersed into 321 molten steel was conducted in an Argon atmosphere graphite- tube furnace in the laboratory. Results show that clogging of SEN is caused by deposi- tion of CaO-TiO2 inclusions on the surface of the refractory rod. As the result the number of inclusions in steel will be obviously increased and the clogging layer comes to be thicker accordingly. Although increase in the hot metal temperature by 50 ℃ can hardly affect formation of the type of oxide inclusions in steel, yet it will significantly reduce the solidified metal in the clogging layer and thus make the clogging layer become thinner.
出处
《炼钢》
CAS
北大核心
2006年第3期35-38,共4页
Steelmaking
基金
国家自然科学基金
上海宝钢集团联合基金资助项目(50374011)
作者简介
郑宏光（1966-），男（汉族），山西五台人，北京科技大学冶金与生态工程学院，高工，博士生，从事不锈钢冶炼技术的研究。
