Process for checking a laser weld seam

Details Process for checking a laser weld seam Process for checking a laser weld seam

2005-01-07

2009-11-17

Desire, Gregory M (Department: 2624)

Image analysis

Applications

Manufacturing or product inspection

C219S121130, C219S121630, C219S121830, C382S149000, C700S166000

Reexamination Certificate

active

07620233

ABSTRACT:
When laser beam welding one or more work pieces faults may occur, which lead to unacceptable losses in quality. A check process is provided, which reliably recognizes seam faults in a seam which is introduced into one or more workpieces by means of laser beam welding. Characteristic signals are detected from the region of the seam using a sensor and compared with an index value or set value, and only signals are taken into consideration which are detected in a characteristic time interval following the laser beam welding, which begins, at the earliest, following the solidification of the seam.

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