Improvement and control of edge skin-warping defects in ultra-low carbon IF steel
LIU Gang1,2, GAN Yong2, LIU Chong3, MA Ming-tu1, SI Xiao-ming4, FAN Hai-ning4, ZHANG Jian5
1. China Automotive Engineering Research Institute Co., Ltd., Chongqing 401122, China; 2. Central Iron and Steel Research Institute, CISRI, Beijing 100081, China; 3. Central Iron and Steel Reserch Institute, HBIS Group, Shijiazhuang 050023, Hebei, China; 4. No.4 Steelmaking and Rolling General Plant, Maanshan Iron and steel Co.,Ltd., Maanshan 243003, Anhui, China; 5. Chengde Steel Company of Heibei Steel Company Group, Chengde 067102, Hebei, China
Abstract：In order to solve the quality problems in hot or cold rolled strip production, the surface defects of hot rolled strip of IF steel were analyzed by means of metallographic microscope, SEM and EDS, and the causes and mechanisms of the typical quality defects in slab and strip were determined. The coupling relationship between the key parameters of continuous casting process and the heating system of reheating furnace and the surface warping defects were studied, and the control measures to reduce the incidence of surface warping defects were put forward. Through the industrial test, the metallurgical defects of the continuous annealing process of the test casting billet were reduced by 1.43%, the reduction rate was 26.63%, and the extent of reduction was 1.11% and 43.70%.
刘纲, 干勇, 刘崇, 马鸣图, 司小明, 范海宁, 张剑. 超低碳IF钢边部翘皮缺陷改善及控制探究[J]. 连铸, 2020, 39(2): 52-57.
LIU Gang, GAN Yong, LIU Chong, MA Ming-tu, SI Xiao-ming, FAN Hai-ning, ZHANG Jian. Improvement and control of edge skin-warping defects in ultra-low carbon IF steel. CONTINUOUS CASTING, 2020, 39(2): 52-57.
2020, Vol. 39 
