METHOD OF FILLED JOINT FOR EDGES OF TRANSFORMER BODY WALL CORRUGATIONS BY WELDING IN SHIELDING GAS ENVIRONMENT WITH SIMULTANEOUS WELDING OF REINFORCEMENT RODS Russian patent published in 2015 - IPC B23K31/02 B23K37/02 

FIELD: machine building.

SUBSTANCE: invention can be used in power plant engineering at manufacturing of corrugated walls of welded transformer bodies with extensive surfaces of active cooling. Reinforcement rods are laid on the corrugations on both sides of a wall and are fixed by holders. The edges are clamped and are held at welding by welding jaws. A filler wire is supplied to the gap between the rods and the corrugation parallel to the rod being welded. Supply of the filler wire is stopped, and the filler wire end between the rods and the corrugations is melt by an arc along with welding of the rods in the point of their contact with the corrugation. At the moment of filler wire melting, the end of the filler wire is torn away from the weld puddle by a reverse motion of a feeding unit. The corrugation edges are welded to form a common weld puddle. After welding is finished, the welding torches together with wire feeding unit are moved to the next corrugation or the wall is moved by a step to get the next corrugation in the welding position.

EFFECT: method provides for improved quality of welding monolithing seals with simultaneously increased output of corrugated wall production.

2 dwg