Abstract：The cause for the fracture of continuous casting slab was studied combing with the observation of optical microstructure. The results showed that the intermediate cracks were inside the slab, which would expand in the cooling process by heat stress, phase transformation stress and selfgravity, and the slab cracked at last. In order to prevent the cracks, measure like enhancing examination and repairing of the equipment, optimizing second rolling system, stabilizing stretching speed and low overheating degree of molten steel, etc should be taken.
收稿日期: 2010-05-27
出版日期: 2011-06-28
引用本文:
邬早勤，秦坤，刘左东，贾占军，尹绍江. Q345B钢铸坯断裂原因分析与预防措施[J]. 中国钢铁期刊网, 2011, 30(2): 29-31.
WU Zaoqin1，QIN Kun2，LIU Zuodong1，JIA Zhanjun1，YIN Shaojiang2. Cracking Analysis of Q345B Continuous Casting Slab and Precaution Measures. Chinese Journal of Iron and Steel, 2011, 30(2): 29-31.
2011, Vol. 30 
