CSP薄板坯镰刀弯成因及控制措施  

Causes and Preventive Measures of CSP Slab Sickle Bending Defect

作　　者：谯德高[1] 张长顺[1] 王桦[1] 张荣堂[1] 

机构地区：[1]酒泉钢铁集团有限责任公司碳钢薄板厂,甘肃嘉峪关735100

出　　处：《铸造技术》2016年第12期2607-2609,共3页Foundry Technology

摘　　要：针对薄板连铸生产宽度小于1 250 mm,液芯压下至52-58 mm时铸坯易发生镰刀弯缺陷而影响板型控制的问题,基于现场实际生产过程数据跟踪,并利用动态配水模型计算了二次冷却配水分布,结合设备精度测量,综合分析了凝固末端二次冷却均匀性、结晶器流场、铸坯在导向段内受力等因素对薄板坯镰刀弯控制的影响。依据分析结果对相关工艺参数进行了优化调整,优化后基本消除了镰刀弯缺陷对成材率的影响。Aimed the problem that slab sickle bending defect affects the slab quality in the production of the section of 1 250 mm×（52-58） mm by CSP thin slab continuous casting, based on the actual process data, using dynamic water distribution model to calculate the distribution of secondary cooling water, the effects of the uniform of solidification at final stage, the flow field in mould and the force in guide section on slab sickle bending defect were analyzed combining the measurement of equipment accuracy. The relative process parameters were optimized according to the analysis results to eliminate the influence of slab sickle bending defects on rolling yield.

关 键 词：薄板坯镰刀弯 结晶器流场 扇形段开口度 二次冷却 

分 类 号：TG335.9[金属学及工艺—金属压力加工]