大规格Q345E连铸圆坯表面裂纹原因分析及控制措施  

Analysis and Control Measures of Surface Crack of Large Size Q345E Round Billet

作　　者：周康 葛承玲 高振波[1] 陶承岗[1] 钱章秀 ZHOU Kang;GE Cheng-ling;GAO Zhen-bo;TAO Cheng-gang;QIAN Zhang-xiu

机构地区：[1]马鞍山钢铁股份有限公司特钢公司 [2]安徽冶金科技职业学院,安徽马鞍山243000

出　　处：《安徽冶金科技职业学院学报》2021年第4期10-11,共2页Journal of Anhui Vocational College of Metallurgy and Technology

摘　　要：以大规格Q345E系列连铸圆坯为研究对象,对铸坯表面裂纹现状及形成原因进行研究。结果表明,适当降低结晶器保护渣粘度,降低结晶器水冷却强度约20%,拉速提升约10%,同时矫直压力下调15%左右时,可显著改善连铸坯表面裂纹。Taking large size Q345E series continuous casting round billet as the research object,the current situation and causes of slab surface cracks were studied.The results show that the surface crack of continuous casting slab can be significantly improved by appropriately reducing the viscosity of mold flux,reducing the water cooling intensity of mold by about 20%,increasing the casting speed by about 10%,and reducing the straightening pressure by about 15%.

关 键 词：大规格 Q345E 连铸圆坯 表面裂纹 

分 类 号：TG21.3[金属学及工艺—铸造]