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通过对热轧中板裂纹形貌的检验,确定了M形裂纹成因。经过对钢种特性的分析和现场跟踪,查找铸坯产生裂纹的原因,并采取相应措施,消除了Q345系钢种中板的M形裂纹缺陷。
Through the examination of the hot-rolled medium plate crack morphology, the cause of the M-shaped crack was confirmed. After the analysis of steel characteristics and on-site tracking to find the cause of slab cracks, and take appropriate measures to eliminate Q345 M-type steel plate in the middle of the plate defects.