热轧带钢边部酸洗缺陷产生机理与治理措施研究  

Study on the mechanism and treatment of pickling defects on the edge of hot rolling strip

作　　者：花凌冬 王东城 计江[3] 徐扬欢 张亚林 HUA Ling-dong;WANG Dong-cheng;JI Jiang;XU Yang-huan;ZHANG Ya-lin(Rockcheck Steel Group Co.,Ltd.,Tianjin 300352,China;National Engineering Research Center for Equipment and Technology of Cold Rolling Strip,Yanshan University,Qinhuangdao 066004,China;China National Heavy Machinery Research Institute Co.,Ltd.,Xi’an 710032,China)

机构地区：[1]天津荣程联合钢铁集团有限公司,天津300352 [2]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 [3]中国重型机械研究院股份公司,陕西西安710032

出　　处：《重型机械》2021年第4期38-42,共5页Heavy Machinery

摘　　要：酸洗后带钢表面经常出现各种表面缺陷,缺陷可能产生于酸洗过程,也可能来源于热轧过程。针对边部锈带与侧面斑块两种缺陷,首先对缺陷的具体产生区段进行分析;然后,对两种缺陷的宏观与微观特征进行细致观察,在此基础上揭示两种缺陷的产生机理;最后,通过优化立辊辊型有效抑制了边部锈带缺陷,通过优化侧导板控制模式与参数基本消除了侧面斑块缺陷。两项治理措施实施后,有效提高了酸洗速度,避免了斑块缺陷引起的锌层剥落。Various surface defects often appear on the surface after pickling steel strip,the defects may be caused by pickling process or hot rolling process.For the two kinds of defects of edge rust band and side patch,firstly,the specific producing defects section is analyzed.Then the macro and micro characteristics of the two defects are observed carefully,and the generation mechanism of the two defects is revealed on this basis.Finally,the edge rust band defect is effectively suppressed by optimizing vertical roller profile,and the side patch defect is basically eliminated by optimizing the control mode and parameters of the side guide plate.After the implementation of the two treatment measures,the pickling speed was effectively improved and the zinc layer spalling caused by the side patch defect was avoided.

关 键 词：热轧带钢 酸洗缺陷 边部锈带 侧面斑块 治理措施 

分 类 号：TG335[金属学及工艺—金属压力加工]