动态轻压下模型对连铸坯内部质量改善的影响  

Effect of dynamic soft reduction model on the improvement in inner quality of slab

作　　者：赵迪 许少普 乔华伟 张少辉 王新 许春 

机构地区：[1]南阳汉冶特钢有限公司技术中心钢研所,河南南阳474500

出　　处：《炼钢》2013年第2期57-60,65,共5页Steelmaking

摘　　要：针对南阳汉冶特钢有限公司250 mm×1 600 mm连铸坯内在质量差的情况,通过铸坯射钉试验建立了连铸动态轻压下控制模型。模型投入连铸生产使用后,可根据生产钢种工艺条件的不同实现动态二冷配水调整及轻压下参数调整,在减轻铸坯中心偏析,改善铸坯内在质量方面效果明显,极大的提高了轧后钢板探伤质量合格率。In order to solve the problem of poor inner quality of the continuous casting slab with 250 mm× 1 600 mm cross section produced in Nanyang Hanye Special Steel Co. ,Ltd. , dynamic soft reduction control model is developed by the nail shooting test on the slab. After the model is put into the production of continuous casting slab, the parameters of dynamic secondary cooling and soft reduction can be adjusted according to different process conditions for different steel grades. The model can effectively reduce the center segregation in the slab and improve the inner quality of the slab. Therefore the conformity ratio of the rolled steel plates in ultrasonic detection test can be greatly upgraded by application of the model.

关 键 词：射钉 动态轻压下模型 铸坯内在质量 探伤质量合格率 

分 类 号：TF777[冶金工程—钢铁冶金]