COLLECTIVE JOINT METHOD WITH ENCLOSED ARC WELDING AND JOINT JIG FOR ENCLOSED ARC WELDING

摘要

PURPOSE:To improve the operability of enclosed arc welding by fixing a material to be welded with a joint jig arranging three or more pieces of parts for housing welding material to be welded at the prescribed groove interval at position where the beveling space forming parts arranged at the center part is held between the materials to be welded. CONSTITUTION:The materials 10 to be welded with the beveling space forming parts arranged at the center part as center are set in the case of the enclosed arc welding of the mutual ends of three or more pieces of the material to be welded and fixed at the prescribed interval with attaching material 11 arranging plural housing parts for housing the tip parts thereof. By inserting a welding rod into the common bevel space formed in between tip pars of material 10 to be welded, the welding is executed. By this method, the enclosed arc welding for three or more pieces of the material 10 to be welded of parallel bars, etc., can be easily executed.