铸坯全氧含量偏高的原因调查与解决措施  

INVESTIGATION OF REASONS FOR HIGHER TOTAL OXYGEN CONTENT IN SLAB AND SOLUTIONS

作　　者：刘文浩[1] 贾黎杰[1] 杜亚伟[1] 贺瑞飞[1] 

机构地区：[1]安阳钢铁集团有限责任公司,河南安阳455004

出　　处：《冶金丛刊》2015年第4期45-48,共4页Metallurgical Collections

摘　　要：针对某钢厂板坯全氧含量偏高进行了炼钢方面与连铸方面相关原因的调查工作。调查分析结果表明,连铸中间包挡墙位置设置存在较大的工艺问题,对此进行了针对性的水模拟实验,认为将高墙位置移到距大包长水口1 000 mm附近,即A=1 000 mm、B=485 mm、h=280 mm、H=335 mm,可保证钢水最短停留时间较长的同时中包死区比率相对较小,促进了夹杂物的充分上浮。改进后铸坯全氧含量由0.0115%降到了0.0057%,降低了50.43%,效果显著。Investigations of reasons for higher total oxygen content in slab were carried out from steelmaking and continuous casting aspects in a certain steel mill. The investigation and analysis results showed that the position setting of the retaining wall had a big process problem,and targeted water simulation tests were conducted. Tests thought that if wall location was moved to about 1000 mm( A = 1 000mm、B = 485 mm、h = 280 mm、H = 335 mm) near the long nozzle,longer shortest stay time of molten steel and relatively smaller dead zone ratio in the tundish at the same time can be guaranteed tp fully promote the inclusion floating. The total oxygen content in slab decreased from 0. 0115% to 0. 0057%,reduced by 50. 43% after improvement,the effect was remarkable.

关 键 词：全氧含量 铸坯 挡墙 水模拟实验 原因调查 解决措施 

分 类 号：TF777[冶金工程—钢铁冶金]