Process for checking a laser weld seam
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United States of America Patent
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Nov 17, 2009
Grant Date -
Jul 28, 2005
app pub date -
Jan 7, 2005
filing date -
Jan 7, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
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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