摘要
连铸是炼钢过程非常重要的工序之一,连铸过程多发的漏钢事故影响因素较多,其中以黏结漏钢最为常见,约占总漏钢比例的70%。连铸漏钢事故容易造成钢液泄漏,发生灼烫、火灾甚至爆炸等安全事故,造成人员伤亡和巨大的财产损失。针对上述问题,从连铸生产的工艺参数出发,系统梳理和分析了连铸黏结漏钢的影响因素,剖析了铸坯尺寸、拉速、冷却水量以及热流对板坯黏结漏钢的影响规律。对1350、1500和1550 mm不同宽度的铸坯黏结情况进行分析,发现1550 mm厚度的板坯平均热流的波动最大,随着板坯宽度的增加,平均热流的波动越明显,铸坯黏结的可能性会随着铸坯宽度的增加而增大。对于宽面尺寸较大的板坯,在生产时要选择合理的拉速,进而避免黏结事故的发生。从工艺参数、人员操作和管理制度方面提出了防控黏结漏钢措施,为连铸的安全生产提供理论和技术支撑。
Continuous casting is one of the most critical processes in steelmaking.The occurrence of breakouts during continuous casting is influenced by multiple factors,with sticker-type breakouts being the most prevalent,accounting for approximately 70%of all breakout incidents.Breakout accidents in continuous casting can lead to molten steel leakage,posing severe safety hazards such as scalding,fires,and even explosions.These incidents may result in casualties and significant property damage.In view of the above difficulties,the factors influencing the bonded steel leakage of continuous casting from the process parameters of continuous casting production are systematically sorted out and the influence of slab size,casting speed,cooling water and heat flow on the bonded steel leakage of slabs are analyzed.The analysis of bonding in slabs with different widths(1350,1500 and 1550 mm)shows that the average heat flow fluctuates most significantly in the 1550 mm thickness slab,and as the slab width increases,the fluctuation in average heat flow becomes more pronounced,leading to a higher likelihood of slab bonding.And for slabs with large wide surface sizes,a reasonable drawing speed should be selected during production to avoid the occurrence of bonding accidents.Finally,preventive measures are proposed to avoid bonded steel leakage,addressing process parameters,personnel operations,and management systems.These recommendations provide theoretical and technical support for the safe production of continuous casting.
作者
王荣荣
王敏
年保国
杨浩
高宇
赵建琦
WANG Rongrong;WANG Min;NIAN Baoguo;YANG Hao;GAO Yu;ZHAO Jianqi(HBIS Material Technology Research Institute,Shijiazhuang 052165,Hebei,China;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Technical Support Center for Prevention and Control of Disastrous Accidents in Metal Smelting,University of Science and Technology Beijing,Beijing 100083,China)
出处
《连铸》
北大核心
2025年第3期99-107,共9页
Continuous Casting
基金
科技研发平台专项资助项目(24461002D)。
关键词
连铸生产
黏结漏钢
影响因素
防控措施
continuous casting production
bonded leaking steel
influencing factor
prevention and control measure
