基于力反馈模型的板坯连铸液芯终点位置判定  

Solidification end position determination on dynamic soft reduction of continuous casting slabs based on force feedback model

作　　者：金昕 温习[1,2] 史学亮 刘大伟[1,2] 任廷志 JIN Xin;WEN Xi;SHI Xue-liang;LIU Da-wei;REN Ting-zhi(National Engineering Research Center for Equipment and Technology of Cold Rolling Strip, Yanshan University, Qinhuangdao 066004, Hebei, China;College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China;China National Heavy Machinery Research Institute Co., Ltd., Xi＇an 710032, Shaanxi, China)

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004 [2]燕山大学机械工程学院,河北秦皇岛066004 [3]中国重型机械研究院股份公司,陕西西安710032

出　　处：《钢铁》2018年第6期61-69,共9页Iron and Steel

基　　金：河北省自然科学基金资助项目(E2016203339)

摘　　要：为了更加准确地判断连铸轻压下过程中板坯的液芯凝固终点位置,从而确定合理的压下位置以及压下区间,改善连铸板坯产品质量,通过分析凝固坯壳在轻压下过程中的力学行为特性,建立基于力反馈的板坯轻压下液芯凝固终点位置动态判定模型。利用模型计算得到轻压下扇形段各夹辊支反力以及总支反力随液芯凝固终点位置的变化规律,通过分析液芯凝固终点位置变化时各夹辊支反力以及总支反力的变化规律,提出基于力反馈模型判定液芯凝固终点位置的方法,并通过射钉试验验证了力反馈模型的准确性。During slab continuous casting soft reduction process,in order to determine solidification end position more accurately,to ensure the reasonable reduction position and reduction section and improve the quality of products of the continuous casting slabs,the mechanical behavior characteristics of slab solidification shell was analyzed. A dynamic liquid core solidification end position prediction mathematical model based on force feedback was developed. The variable laws of reaction force on pinch rolls and total pressure of segment with the changing of solidification end position of liquid core were calculated by the mathematical model. According to those variable laws,the methods for determining solidification end position of liquid core were presented based on force feedback mathematical model. And the accuracy of force feedback mathematical model is verified by pin-shooting experiment.

关 键 词：板坯连铸 轻压下 液芯凝固终点 力反馈模型 射钉法 

分 类 号：TF777.1[冶金工程—钢铁冶金]