Automatic tracking process of the joint bevel for the butt...

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 9/32 (2006.01) B23K 9/02 (2006.01) B23K 9/028 (2006.01)

Patent

CA 2235817

The present invention relates to an automatic tracking process of the joint bevel for the butt welding of coaxial pipes operating with orbital movements, which allow the deposit of a number of passes of welding material to produce material continuity between these with the formation of a welded joint without "side of lack fusion" defects. The present invention also relates to equipment for the embodiment of the process which substantially consists in continuously observing the electrical parameter values relating to the voltage, current and voltaic arc impedance and comparing these values with sample values fixed and preset in a governing unit, which activates the driving source for the orientation of the welding torch in the joint bevel.

La présente invention a trait à un procédé de centrage automatique du chanfrein du joint pour le soudage bout à bout de tuyaux coaxiaux fonctionnant par rotation, qui permettent la déposition d'un bon nombre de passes de matériaux de soudure afin d'assurer la continuité du matériau entre ces tuyaux par la formation d'un joint soudé ne comptant pas de défauts à cause d'un << manque de fusion latérale >>. La présente invention porte également sur l'équipement pour l'application du procédé qui consiste, pour l'essentiel, à observer de manière continue les valeurs des paramètres électriques concernant la tension, le courant et l'impédance de l'arc de soudage et à comparer ces valeurs avec des valeurs échantillons fixes et préétablies dans une unité de réglage, qui actionne la source d'entraînement pour l'orientation du chalumeau à souder dans le chanfrein du joint.

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