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Hybrid laser-MAG welding with real-time adaptive control has been demonstrated.Hybrid welding conditions have been developed to produce ISO 13919-1 class B (stringent) quality butt welds between 8mm thickness steel plates,using a 5kW 6mm.mrad Yb fibre laser combined with conventional arc welding equipment.A laser vision seam tracking system has enabled a 7-axis robot,manipulating the hybrid welding head,to track butt joints in real time during welding.The laser vision system has also provided information on the variations in joint fit-up,in particular the width of any gaps,or height of any mismatches present.This information has then been used to automatically adjust the robot position or speed,or arc welding parameters,depending on the fit-up detected.In this way,the tolerance of the hybrid process has been augmented,producing stringent quality welds over a wider range of joint fit-up cases than when using fixed conditions alone.
Hybrid laser-MAG welding with real-time adaptive control has been produced. Hybrid welding conditions have been developed to produce ISO 13919-1 class B (stringent) quality butt welds between 8mm thickness steel plates, using a 5kW 6mm.mrad Yb fiber laser combined with conventional arc welding equipment. A laser vision seam tracking system has enabled a 7-axis robot, manipulating the hybrid welding head, to track butt joints in real time during welding. laser vision system has also provided information on the variations in joint fit-up, in particular the width of any gaps, or height of any mismatches present. This information has then been used to automatically adjust the robot position or speed, or arc welding parameters, depending on the fit-up detected. , the tolerance of the hybrid process has been augmented, producing stringent quality welds over a wider range of joint fit-up cases than when using fixed conditions alone.