减少冷轧IF钢表面条痕缺陷的生产实践.pdf

45 9 Vol. 45, No. 9 2 0 1 0 9 Iron and Steel September 2010 IF 1 1 1 2 2 3 , , , , , ( 1. , 617000; 2. , 617063; 3. () , 617067) : IF , , IF w( aO)/ w (Al O ) , RH 2 3 ,, 10. 97%1.00% : IF ; ; ; : TF 777. 1 : A : 04492 749X(2010)092 00442 04 Production Practice on th e Reduction of Surface Faint2Sliver Defect s for Cold2Rolled IF Steel 1 1 1 2 ZENG Jian2hua , WU Guo2rong , HEN Yong , YANG Su2bo , 2 3 YANG Jin2cheng , ZHAO Ke2wen ( 1. Material Research Department, Panzhihua Iron and Steel Research Institute, Panzhihua 617000, Sichuan, hina; 2. Technique and Quality ontrol Department, Panzhihua Steel and Vanadium ompany Limited, Panzhihua 617063, Sichuan, hina; 3. Science and Technology Ministry, Panzhihua Iron and Steel ( Group) o. , Panzhihua 617067, Sichuan, hina) Abstr act: The sample of cold2rolled plates, hot2rolled plates and slab were analyzed with the condition of faint2 sliver defects appeared in IF steel of Panzhihua Steel, and it was shown that faint2 sliver defects in cold2rolled steel sheet weremainly caused by microcrack under the skin of strands, slag entrapment in mold during casting and inclusions in slab during rolling with the analysis on cold2rolled plates, hot2rolled plates and slab in Panzhihua Steel. Faint2 sliv2 er defects were c