Electrode holder for gas-shielded arc welding in a narrow, deep joint

摘要

An electrode holder for gas-shielded arc welding in a deep, narrow joint contains a current contact element 1 for the electrode holder with an electrode 2 and a nozzle for supply of protective gas to the welding zone, which communicates with a gas feed pipe 4 and is provided with at least one row of horizontally arranged holes 5. The nozzle is a closed chamber 3 configured as a symmetrical wedge, whose sharp edge is turned toward the electrode 2 and lies in the same plane as its axis. The side walls and bottom of the chamber 3 have at least one additional row of holes 6, whose axes lie in a plane which is approximately perpendicular to the walls 7 of the joint. The electrode holder is primarily intended for welding of very thick workpieces.