METHOD OF RECONDITIONING WORN-OUT PARTS BY ELECTROCONTACT WELDING OF A METAL STRIP Russian patent published in 2019 - IPC B23K11/06 B23K35/02 

FIELD: technological processes.

SUBSTANCE: invention relates to contact welding. Prior to welding by means of stamping or some other method, flat tape is corrugated and shaped to wave-like shape including elements in form of alternating ridges and recesses. Corrugation is made with pitch not exceeding distance between adjacent welded points. Length of one full wave along its middle line is 1.45…1.6 times more than that of elements. Generator generatrixes make angle with direction of tape run-in by roller-electrode from 50 to 70°. During welding to the part, the strip is heated to plastic state and under action of force from the side of the tool, filler metal moves along the restored surface, destroying at dense movement dense hydroxide films, preventing formation of strong welded joint in solid phase.

EFFECT: invention can be used in restoration and hardening of parts by electric contact welding of steel tapes.

1 cl, 3 dwg, 1 ex