高强钢SFB700热轧板形缺陷的成因及控制措施  

Cause and control measure of shape defects of high strength steel SFB700 hot rolling strip

作　　者：靳振伟 滕洪宝[2] 张长利 李晓林 JIN Zhen-wei1, TENG Hong-bao2, ZHANG Chang-li1,LI Xiao-lin1(1. Metallurgical Process Department, Research Institute of Technology, Shougang Group Corporation, Beijing 100043, China; 2. Hot-rolling Department, Shougang Jingtang United Iron and Steel Co. , Ltd. , Tangshan 063200, Hebei, Chin)

机构地区：[1]首钢集团有限公司技术研究院冶金过程研究所,北京100043 [2]首钢京唐钢铁联合有限责任公司热轧作业部,河北唐山063200

出　　处：《中国冶金》2018年第7期50-53,共4页China Metallurgy

摘　　要：分析3.0~6.0mm厚规格的SFB700热轧板边部浪形缺陷的形成原因,主要在于轧制精轧出口板型控制边浪趋势,与带钢在轧后冷却时边部冷却不均有关。通过优化精轧板形控制策略、调节层冷区域两侧水量差及侧喷水角度减少边部浪形缺陷的产生,并采用新的平整工艺有效消除边部浪形,显著降低了SFB700边浪缺陷的发生率。The cause of the formation of the wave shape defects on the edge of SFB700 hot rolling strip with the thickness of 3.0-6.0 mm was analyzed,which was mainly controlled by the trend of wave shape on the edge finish rolling outlet and concerned with the inhomogeneous edge cooling of the strip after rolling.And the emergence of wave shape defects on the edge was decreased by optimizing the rolling strip shape control strategy,adjusting the water quantity difference on both sides and side spray angle in the cooling area.At the same time,a new temper process was used to eliminate the wave shape defects on the edge.Therefore,the occurrence rate of the wave shape defects on the edge of SFB700 was reduced significantly.

关 键 词：高强钢 板形缺陷 水量差 平整工艺 

分 类 号：TG335.5[金属学及工艺—金属压力加工]