WELDING TORCH, WELDING HEAD, GAS NOZZLE AND A CONTACT PIPE AND A METHOD FOR CONTROLLING A WELDING POST PROCESS

摘要

The invention relates to a single- or multi-wire welding torch (6), more specifically to a laser-hybrid single- or multi-wire welding head (1) provided with the welding torch (6) which is connectable to a welding device via a hose assembly and consists of several parts such as a burner handle, a tubular welding torch housing, a contact tube (20) for each welding wire (21), a gas nozzle (2) etc., wherein an internal insert (28) for receiving the contact tube(s) (20) and the gas nozzle (2) is mounted in the end area of the welding torch housing. A fixing element (30) made at least partially of an elastic material is arranged onto said internal insert (28) for producing, upon request, a particularly sealed connection between said internal insert (28) and gas nozzle (2) enclosed thereon which is obtainable by the spatial expansion of the fixing element (30). A method for controlling a robot welding post process, a gas nozzle cap and the gas nozzle (2) for the welding torch (6) are also disclosed.