莱钢Ф350mm圆坯中心质量缺陷分析与改进  

ANALYSIS ON QUALITY DEFECTS OF Ф350MM ROUND BILLET CENTER AND IMPROVEMENT IN LAIWU STEEL

作　　者：刁峰[1] 梁建国[1] 赵冠夫[1] 房绪江[1] 毛成杰[1] 

机构地区：[1]莱芜钢铁集团有限公司特钢事业部,山东莱芜271104

出　　处：《冶金丛刊》2014年第2期6-9,共4页Metallurgical Collections

摘　　要：针对莱钢Ф350mm圆坯存在的中心裂纹、疏松等质量缺陷,通过控制钢中[%C]含量,降低钢水过热度,提高连铸设备对弧精度,优化二冷系统、拉速及浸入式水口插入深度等措施,铸坯中心质量缺陷基本消除。In view of the existing Ф350mm round billet quality defects such as center cracks,center porosity,by controlling the content of[%C]in steel,lowering the temperature of the liquid steel,improving the accuracy of arc continuous casting equipment,optimization of two cooling system,pulling speed and immersion depth of nozzle,quality defects with the billet center are basically eliminated.

关 键 词：Ф350mm圆坯 连铸 中心裂纹 结晶器 

分 类 号：TG250.6[金属学及工艺—铸造] TG245