Automatic welding device of the mig/mag type

Details Automatic welding device of the mig/mag type Automatic welding device of the mig/mag type

B - Operations, Transporting

23

K

B23K 9/173 (2006.01)

Patent

CA 2630910

The present invention relates to an automatic welding device of the MIG/MAG type, consisting of at least one carriage carrying at least one welding head comprising at least one torch (1), guiding a consumable wire electrode along a joint plane (P) between pipes to be welded, which brings the current to the tip of the wire electrode in order to generate an electric arc and to melt the filler metal. The invention consists in the fact that the welding head therefore has a welding torch (1) intended to be centred with respect to the joint plane (P) in order to ensure the penetration pass and also carries at least two other welding torches (2, 3), called following torches, which are positioned, respectively, one after the other, after the first welding torch, called the central torch (1), and are offset, respectively, on either side of the central torch (1) in order to make lateral passes. Application to the welding of metal pipes in order to form pipelines.

La présente invention concerne un dispositif de soudage automatique du type MIG/MAG constitué d'au moins un chariot portant au moins une tête de soudage comprenant au moins une torche (1) guidant un fil électrode fusible le long d'un plan de joint (P) entre des conduits à souder, qui amène le courant à l'extrémité du fil électrode pour générer un arc électrique et assurer la fusion du métal d'apport. L'invention consiste en ce que la tête de soudage présente donc une torche de soudage (1) destinée à être centrée par rapport au plan de joint (P) pour assurer la passe de pénétration et porte également au moins deux autres torches de soudage (2, 3), dites suiveuses, positionnées respectivement l'une après l'autre après la première torche de soudage dite centrale (1) et décalées respectivement de part et d'autre de la torche dite centrale (1) pour réaliser des passes latérales. Application au soudage de conduits métalliques pour former des canalisations.

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