Laser welding method
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United States of America Patent
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Nov 19, 2002
Grant Date -
Feb 7, 2002
app pub date -
Mar 12, 2001
filing date -
Mar 10, 2000
priority date (Note) -
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Abstract
The present invention is to provide a novel laser welding method, capable of preventing formation of a welding defect, and achieving a deep penetration by a low heat input so as to enable formation of a welding structure with a high strength and a high toughness even in the case of welding by a high power laser. A welding operation is executed with a periodical fluctuation adjustment so as to have a base output of 50% or more with respect to a peak output.
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