Welding defects detecting and motor vehicle parts selecting method for use on parts production line, involves processing data acquired during welding of parts to deduce Boolean variable, and detecting welding defect from variable

摘要

The method involves acquiring data at a level of welding arc or more near to the welding arc, during welding of parts to be welded of a motor vehicle, and processing the acquired data for deducing a Boolean variable. Welding defect is determined from the Boolean variable. The data is chosen from a group formed by a voltage (U), intensity (I), wire speed (Vf), welding speed (Vs), gas pressure (Pgaz) or gas rate (Dgaz). Independent claims are also included for the following: (A) an installation for automatically detecting welding defects and for selecting parts of a motor vehicle to be welded (B) a welded parts production line.