FLASH BUTT WELDING FOR WORKPIECES WITH "CUT WITH UPPER CUT" WORKPIECE ENDS Russian patent published in 2024 - IPC B23K11/04 B23K37/04 B23K101/28 

FIELD: welding.

SUBSTANCE: method and device can be used for welding of steel workpieces with each other, having ends cut off by upper cut, for formation of an endless profile and its subsequent continuous rolling into a rolled product. Each end cut by upper cut has deformation in cross section of workpiece, due to previous cutting operation, due to the fact that one side surface of the workpiece passes inside the profile of the workpiece at the end section of the workpiece relative to its normal square profile of the cross section. Method comprises determining the orientation of the front part of the workpiece for welding to the rear part of the previous workpiece to determine the need to turn the workpiece around its longitudinal axis for alignment of their cut ends and provision of subsequent cleaning of formed weld seam with shavers for removal of all surplus material of seam. Based on the determined orientation, the workpiece rotation device is operated for its rotation around the longitudinal axis of the workpiece. Aligned workpieces are butt welded by flash butt welding. Endless profile seam formed by butt welding is cleaned from excess metal by means of one or more shavers.

EFFECT: due to selection of orientation of workpieces, flash butt welding machines are capable of receiving all types of end sections of workpieces with their successful welding and cleaning of the obtained joint.

15 cl, 5 dwg