AUTOMATIC TRACKING PROCESS OF THE JOINT BEVEL FOR THE BUTT WELDING OF PIPES AND EQUIPMENT FOR THE EMBODIMENT OF THE PROCESS

摘要

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.