Appear on the hot-rolled coil a short straight edge straight crack a greater impact on the product. It differs from conventional development pattern. Rules of the middle diagonal cracks appear blank. Using electron microscopy, metallography, picklin g and other detection methods. analyzed the coil in the middle billet, billet and then analyzed to detect the formation mechanism. And improve the quality of the surface coil edge to prevent the generation of such defects.
李金波, 路殿华, 李建文. 铸坯皮下裂纹的演变规律研究[J]. 中国冶金, 2013, 23(9): 26-30.
LI Jin-bo, LU Dian-hua, LI Jian-wen. Mechanism and Control of Subsurface Crack in Slab Corner. China Metallurgy, 2013, 23(9): 26-30.