Abstract：To clarify formation mechanism of single-sided corner cracks in slab of Qiangang, as cast microstructure was analyzed.Corner temperature at two sides of the slab was measured during continuous casting. Water flow rate of nozzles from two suppliers was compared in laboratory. Results show that such corner cracks propagate along the original austenite grain boundaries. In laboratory test, water flow rates of cooling nozzles from the two suppliers are different when they were connected to the same air pipe and the same water pipe. Uneven water distribution along slab’s transverse direction is the main cause of corner temperature difference. The higher temperature side moved into brittle zone of the steel. Then it leads to single-sided corner cracks. Finally, this is solved by replacing cooling nozzles of one strand with nozzles from one supplier.
季晨曦，朱国森，张颖华，干明，刘国梁，王畅. 迁钢板坯内弧单边角横裂纹成因与对策分析[J]. 中国钢铁期刊网, 2013, 32(2): 29-31.
JI Chen-xi,ZHU Guo-sen,ZHANG Ying-hua,GAN Ming,LIU Guo-liang,WANG Chang. Study on Formation Mechanism and Countermeasures of Single-Sided Transverse Corner Cracks of Slab in Qiangang. Chinese Journal of Iron and Steel, 2013, 32(2): 29-31.
2013, Vol. 32 
