Investigation of defect formation in the form of longitudinal folds at the ends of semi-finished pipes during rolling on an automatic TPA mill

The article presents an elimination method aimed at addressing the defects in the form of longitudinal folds at the ends of semi-finished pipes during rolling on automatic mills of a pipe rolling plant (TPA). Currently, this issue is relevant, as it significantly affects the quality of the pipes produced. The developed solution is based on the implementation of a special design that prevents the occurrence of longitudinal folds at the ends of semi-finished pipes. Experimental studies have been conducted to confirm the effectiveness of the proposed technical solution. The obtained results demonstrate a significant reduction in the number of defective pipes and an increase in the overall volume of high-quality production. The developed technical solution represents a significant contribution to the improvement of pipe rolling technology on automatic TPA mills and can be applied in production conditions to enhance outcomes and resource efficiency