摘要
针对铸坯表面温度回升的产生机理,分析了拉速、二冷强度及二冷段长度对坯壳温度回升的影响,结合莱芜钢铁股份有限公司特殊钢厂大方坯连铸机的装备特点,对铸机的二冷区长度进行了重新设计,并优化了二冷工艺。铸机改造后实践表明,铸坯内部质量得到改善,铸坯缺陷率明显降低。
The effect of drawing speed,intensity of the secondary cooling and the length of the secondary zone on the reheat of the strand shell has been analyzed according to the mechanism of the occurrence of strand shell reheat.In view of the characteristics of the equipments of the bloom continuous caster in the Special Steel-making Plant of Laiwu Iron Steel Co.,Ltd.,the length of the secondary zone is redesigned and the secondary cooling technology optimized as well.The practice of caster revamp shows that the internal quality of the bloom is improved and the rate of defect of the bloom obviously reduced.
出处
《炼钢》
CAS
北大核心
2010年第6期21-23,31,共4页
Steelmaking
关键词
连铸
大方坯
二冷区长度
优化设计
continuous casting
bloom
length of secondary cooling zone
design optimization
作者简介
何庆文（1968-），男，莱芜钢铁股份有限公司特殊钢厂，高级工程师，博士生，从事电弧炉炼钢、连铸工艺技术研究及产品质量控制。
