Fronius International Gmbh

Gerhard Miessbacher

Herbert Staufer

Markus Steinmaurer

Manfred Rührnössl

Ewald Berger

Harald Nöbauer

Manfred Rü{umlaut Over ( )}hrnössl

The invention relates to a single- or multi-wire welding torch (), more specifically to a laser-hybrid single- or multi-wire welding head provided with the welding torch () which can be connected to a welding device via a hose pack and consists of several parts such as a torch handle, a tubular welding torch housing, a contact housing, a contact tube for each welding wire (), a gas nozzle () etc., wherein an internal insert () for receiving the contact tube(s) () and the gas nozzle () is mounted in an end area of the welding torch housing. A fixing element () made at least partially of a flexible material is placed on the internal insert () or on the housing () for producing as required an, in particular, gas-tight connection between said internal insert () and the gas nozzle () pushed thereon. This connection can be established by the spatial extension of the fixing element. A method for the process control of a robot welding system, a gas nozzle cap and a gas nozzle () for a welding torch () are also disclosed.

Welding torch with a fixing element for the gas nozzle, said element being capable of extension; process control method for a welding system equipped with said welding torch; gas nozzle for said welding torch; and contact tube for said welding torch

The invention relates to a method for welding coated sheet metal (), which comprises at least one laser () and at least one shielded arc unit () and a rod feeding device () for a welding rod (). The aim of the invention is to provide a method or a device of the aforementioned kind which allows fo&#x2dc; reducing or completely avoiding inclusions such as are e.g. caused by the evaporation of the coating of the metal sheet (). For this purpose, a clamping device () is used for positioning the coated metal sheet () without substantial gaps between the individual sheets. A material having a zinc and/or carbon and/or aluminum content is used as the weld metal or welding rod ().

Laser hybrid welding method and laser hybrid welding torch using a zinc and/or carbon and/or aluminum-containing rod

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Wels/Thalheim, Austria

Gerhard Miessbacher