METHOD FOR MAKING WELDED HOT DEFORMED PRODUCTS AND LINE FOR PERFORMING THE SAME Russian patent published in 1998 - IPC

FIELD: plastic metal working, namely manufacture of welded structures, tubes, sections from rolled pieces. SUBSTANCE: method for making welded hot deformed products in hot rolling mill line comprises steps of feeding and shaping hot rolled piece, welding and deforming product. In hot rolling mill line after stands for finish rolling non-cooled rolled piece is shaped. Steps of shaping, welding and deforming are realized at temperature values providing reduced stresses and structural non-uniformity of material. Rolled piece is fed and simultaneously shaped. Line for performing the method includes arranged according to manufacturing process and joined by means of transportation units: hot rolling mill, aggregate for shaping, welding and deforming blanks. Apparatus for feeding rolled pieces is arranged at inlet of said aggregate. Transportation units are provided with apparatuses for combining rolled blanks mounted in front of apparatus for feeding rolled pieces. EFFECT: possibility of welding products of high-strength steels, enhanced quality of products, enlarged assortment, lowered expenses. 4 cl