IMPROVED WELDING TORCH AND SUBMERGED ARC WELDING PROCESS TECHNIQUE IN ONE SINGLE PASS FOR EACH LAYER AND AT LIMITED VOLUMES OF WELDING WITH HIGH WALLS

摘要

Submerged arc welding torch adapted to perform welding in one single pass for each layer on high walls, of the type constituted by a support body from which two wire-guiding lances, held in reciprocal engagement by screws and pins, depart, each of said lances provided with an internal cavity for the insertion of the welding wire, at the end of which a welding material delivery nozzle is provided, characterized by the fact that further departing from said support body are a feeler lance support and a centrally arranged flow delivery duct, said wire-guiding cavities being incorporated into a pair of lances.