FLASH-BUTT RESISTANCE WELDING PROCESS

摘要

A flash-butt resistance welding process comprising a flashing of parts being welded and their upsetting. The direction of speed of motion of the parts during flashing is changed by converging and diverging them. The parts being welded are converged up to the moment when the summary resistance of elementary contacts arising between the flashed surfaces of the parts becomes equal to 0.4 - 0.5 of the short-circuit impedance of the welding machine. Then the parts are diverged up to the moment when the summary resistance of elementary contacts reaches 1.4 - 1.6 of the short-circuit impedance of the welding machine.