Method and apparatus for monitoring laser weld quality via...

Details Method and apparatus for monitoring laser weld quality via... Method and apparatus for monitoring laser weld quality via...

B - Operations, Transporting

23

K

B23K 26/00 (2006.01) B23K 26/06 (2006.01) G01N 21/63 (2006.01)

Patent

CA 2251082

A method and apparatus for monitoring the quality of a laser process such as a laser welding process comprises monitoring the light emitted from the weld plasma above the surface of the workpiece irradiated by the laser beam. The intensity of the light emitted from the plasma is compared to a predetermined value of the light emission as determined under process and workpiece conditions that produce welds of acceptable quality. Variations of the monitored light intensity greater than a preselected value can be valuated as unacceptable welds. Such variations can be caused by changes in the laser beam power, the workpiece speed, laser focusing problems, insufficient shield gas flow, workpiece deformation and weld contamination. The process monitors the light emission for a selected range of wavelengths that correspond to the major emission peaks of the light spectrum. The method enables in-process control of laser processes.

Affiliated with

Also associated with

Rating

Method and apparatus for monitoring laser weld quality via... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for monitoring laser weld quality via..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for monitoring laser weld quality via... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1895600