Laser Welding Method
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United States of America Patent
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Issued Date -
Dec 20, 2007
app pub date -
Feb 23, 2005
filing date -
Feb 27, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a laser welding method of varying a waveform and a frequency of a laser output in a controlled manner so as to prevent occurrence of weld defects, a time change in light emission strength of a plasma or plume generated from a laser welded portion is detected, a laser output variation condition is set so that the time change in the light emission strength is in response to the variation in the laser output during laser welding. In a laser welding method of varying the waveform and frequency of a laser output suitably so as to prevent the occurrence of the weld defects, a new laser welding method can optimize a laser output variation condition more simply and securely.
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