ADVANCED WELDING TORCH AND METHOD FOR SUBMERGED ARC WELDING OF EACH LAYER IN ONE PASS WITH LIMITED WELDING VOLUMES AND HIGH WALLS Russian patent published in 2021 - IPC B23K9/18 B23K9/127 B23K37/04 

FIELD: welding.

SUBSTANCE: invention can be used for submerged arc welding of parts with large thickness with limited welding volumes. Two guide mouthpieces for guiding welding wire connected to each other protrude from a bearing case of a welding torch. Each mouthpiece has an inner cavity for welding wire and a tip for supplying welding material. A bearing rod to support the mouthpiece and a supply pipe for supplying flux located in the center protrude from the bearing case. The bearing rod contains mechanical guide element (12) located at its distal end and made to provide the possibility of continuous alignment of tips relatively to a welding area. The mechanical guide element is transversely connected to a displacement system relatively to a welded joint, and it is also equipped with pre-loaded springs, which allows for maintaining precise alignment of a joint site.

EFFECT: invention provides for the right position of welded joints superimposed in one layer to obtain a uniform welded joint of high quality with very high and closely located part walls.

8 cl, 11 dwg