Abstract：Aiming at the surface defects of cold-rolled tin plate, the main causes of spot/linear defects of cold-rolled tin plate were obtained by sampling and analyzing with electron microscope. It shows that the main causes of the spot/linear defects of tinplate are the slag entrapment(Al-Ca-Mg-Na-O complex inclusions) and Al2O3 inclusions. By studying the cause of inclusions in the process of converter-RH refining-continuous casting, the inclusions were controlled effectively by controlling the converter tapping oxygen, extending circulation time of deoxidization-alloying and reducing oxygen blowing in RH refining process, optimizing the continuous casting process including nozzle immersion depth, argon flow rate, mold fluxes, and the amendment rate in cold rolling process caused by steelmaking process reduced obviously from 2%-3% to below 0.5%.
袁纲, 杨枝超, 唐树平, 孔勇江, 杨运超, 刘贵福. 镀锡板夹杂缺陷分析及控制[J]. 连铸, 2020, 39(6): 62-67.
YUAN Gang, YANG Zhi-chao, TANG Shu-ping, KONG Yong-jiang, YANG Yun-chao, LIU Gui-fu. Analysis and control of inclusion defects of tinplate steel slab. CONTINUOUS CASTING, 2020, 39(6): 62-67.
Nan S H,Kwon O D,Yang D W,et al. Improvement of steel cleanliness in ladle exchange period[C]//78th Steel-making Conference Proceedings. Warrendale:ISS,1995:551.
2020, Vol. 39 
