摘要
以莱钢50 t电炉生产线及新二区转炉炼钢生产线生产的两种规格的连铸坯作为研究对象,分析了内部裂纹形成的原因,并采用扫描电镜和能谱分析了内部裂纹的类型。通过采取恒拉速浇注、拉坯速度与水量合理匹配、实行中间包窄温度波动控制、提高钢水纯净度等措施,连铸坯的质量得到了明显改善,低倍和热顶锻合格率也有了显著提高。
Two kinds of continuous casting billet produced by the 50 t EAF and converter steelmaking production lines in new two area had been researched and the reasons and types for the formation of internal cracks had been studied by SEM and EDAX. The quality of casting billet improved, macrostructure and hot upsetting percent of pass enhanced significantly through implementation of these measurements such as casting with stable casted velocity, reasonable matching between casting speed and water quantity, controlling with narrow temperature wave of molten steel in ladle and heightened the purity of molten steel.
出处
《山东冶金》
CAS
2014年第2期40-43,共4页
Shandong Metallurgy
关键词
连铸坯
内部裂纹
原因
措施
continuous casting billet
internal cracks
reason
measure
