Non-Contact Inline Supervision of Welding Processes
QuellTech laser metrology in practice
1. Weld Gap Tracking for Robot Welding
Precise positioning in robot welding often represents a real challenge, as position and size of the gap in different components frequently is not identical; sometimes also tolerances may differ. This fact may cause an improper selection of the weld seam entailing welding defects. The
QuellTech Q4 laser scanner family enables these defects directly to be measured and corrected inline.
2. Compensation of thermal distortion during welding
As during the process, considerable heat is supplied to the component, thermal expansion cannot be neglected, as the optimum welding position shifts. As a consequence, the mechanical strength of the connection after completion of the process may be insufficient. If not detected in time, major damages caused by rupture cannot be excluded.
QuellTech laser scanner prove to be extremely useful for these applications, as they are able to correct the position and thus the path immediately before the process is launched.
Besides robot welding, welding guided on machine shafts still represents a usual procedure in industrial applications. Inspection normally does not take place before completion in a separate test routine. By integration of the quality supervision by a laser scanner directly at the end of the process, an additional test routine can be omitted.
This way it is possible to discover improper welding of a long seam (e.g. of a tank) without major delay, otherwise expensive rework would be inevitable. The same is valid for fine defects like cracks, pores or spatters. This prevents production of long passes requiring rework, or even scrap. The quality of the weld is documented at the same time. Link zu Testimonial
We would be happy to carry out a first test measurement for you with your laser scanner applications, give you an assessment of the feasibility and provide you with technical and sales support in the further procedure.
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