METHOD OF PREPARING STRIP END FOR BUTT WELDING Russian patent published in 2012 - IPC B23K11/02 B23K101/16 

FIELD: process engineering.

SUBSTANCE: invention may be used for butt welding of 150 mm-wide strips at high-efficiency continuous tube welding and iron bending mills. Strips are displaced with lifted top electrodes of welding machine stationary and moving beds. For alternate cutting of strip ends by shears strips are stopped nearby shears cutting axis to lift appropriate looping roller. Low pressure is fed to shears blades drive cylinder to drive bottom blade to stroke limiter into horizontal position. Top blade is lowered to extrude strip end in gap between blades on strip one edge to contact of its another edge with thrust arranged nearby bottom blade stroke limiter. Strip is clamped by carriage gripper, high pressure is fed to shears blades drive cylinder to cut strip end. Clamped strip is fed to welding electrodes.

EFFECT: higher efficiency, expanded operating performances.

3 dwg