Analysis and Improvement Measures for Bending Cracking of American Standard Structural Steel A572Gr50
The cracking on the outer side of the bending of the American standard structural steel A572Gr50 on the CSP production line during processing and use was detected and analyzed,and it was determined that the longitudinal surface cracks formed by the longitudinal cracks in the cast slab after rolling were the main cause of bending cracking.By analyzing the causes of longitudinal cracks,measures such as optimizing the composition of protective slag and reducing the casting speed are taken to reduce the occurrence of uneven cooling in the casting,thereby suppressing the occurrence of longitudinal cracks and avoiding the recurrence of bending cracks.
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