ASSEMBLING AND WELDING MILL FOR PIPE MANUFACTURE Russian patent published in 2018 - IPC B23K26/262 B21C37/08 B23K26/348 B23K26/70 

FIELD: technological processes.

SUBSTANCE: invention relates to the production of large diameter pipes, in particular to the assembly and welding mill for the production of pipes. Mill includes means for feeding a tube blank with a transport roller table with a longitudinal axis passing through a welding cage with radially located pressure rollers, the longitudinally oriented guide knife and the trolley with rollers rotating along the inner surface of the tube blank while moving the trolley through the assembly welding cage are arranged to compress the tubular blank conveyed along the transport roller table. On the supporting elements of the assembly and welding stand, a hybrid laser-arc welding head is installed with the possibility of moving it horizontally, vertically and around its longitudinal axis. Trolley is rigidly connected to the supporting elements of the assembly and welding stand by means of a vertically oriented longitudinally oriented connecting knife. Guide knife is designed to position the pipe blank by opening the edges in a position for 12 hours and is mounted on the support elements of the assembly and welding stand with the possibility of vertical movement and fixation. Trolley is vertically mounted on the trolley, facing upwardly and configured to exert an effect on the edges of the pipe blank from its inner side. One of the roller beams is installed vertically with the possibility of affecting the edges of the pipe blank from the outside.

EFFECT: application of the root seam with guaranteed alignment of the edges of the pipe billet, regardless of the size.

1 cl, 4 dwg