Abstract：Formation mechanism and influence factors of corner transverse cracks at outer arc surface were investigated systematically in Shougang Jingtang United Iron and Steel Co., Ltd. The results show that the main cause for the occurrence of corner transverse cracks at outer arc surface is that the slab corner temperature at bending part is in the third brittle zone of steel, and at the same time the strain on the outer arc surface is over that slab can undertake. Countermeasures that increasing (or decreasing) corner temperature and controlling nitrogen content are carried out to optimize secondary cooling system, while insuring caser state and equipment accuracy, which decreased slab corner transverse cracks obviously.
收稿日期: 2015-04-07
出版日期: 2015-11-11
引用本文:
王宝动，王保生，杨春宝. 微合金化钢板坯角部横裂纹控制实践[J]. 中国钢铁期刊网, 2015, 34(5): 34-37.
WANG Bao-dong，WANG Bao-sheng，YANG Chun-bao. Control practice of corner transverse cracks on micro-alloyed steel slab. Chinese Journal of Iron and Steel, 2015, 34(5): 34-37.
2015, Vol. 34 
