连铸宽厚板坯窄面鼓肚分析与解决方法  

Analysis and solution for bulging on narrow face of casting slab

作　　者：周士凯[1] 王西林[1] 王新 田松林[1] 孟春[1] 

机构地区：[1]中国重型机械研究院股份公司,陕西西安710032 [2]南阳汉冶特钢有限公司,河南南阳474500

出　　处：《重型机械》2013年第1期60-62,共3页Heavy Machinery

摘　　要：南阳汉冶特钢3#连铸机浇铸300 mm×2 100 mm Q460C钢时,窄面出现10～12 mm鼓肚,分析发现浇注过程中存在窄面足辊支撑长度短、窄面足辊冷却强度弱、窄面足辊锥度小等问题。通过对窄面足辊结构、窄面足辊冷却强度、窄面足辊锥度等改进,保证了窄面足辊对铸坯支撑、冷却,将窄面鼓肚控制在4 mm内。The 10 -12 mm bulging appeared on the narrow face of 300 mm × 2100 mm Q460C casting slab, when 3# caster in Nanyang Hanye Special Steel Plant cast Q460C casting slab. It was found in the analysis that there were several important factors, for example, short support length, insufficient cooling intensity, and small taper of the narrow foot roll and so on. The improvement of the narrow foot roll ensured the support and cooling to the slab. The bulging was controlled in the range of less than 4 mm.

关 键 词：板坯连铸机 窄面鼓肚 窄面足辊 铸坯支撑 冷却强度 

分 类 号：TF777[冶金工程—钢铁冶金]