LASER WELDING METHOD, HIGH PRESSURE FUEL SUPPLY PUMP, AND FUEL INJECTION VALVE
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United States of America Patent
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Jun 10, 2016
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Jul 8, 2015
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It is an object of the present invention to provide a laser welding method making it possible to secure the effective welding length when the laser beam is applied obliquely. In a laser welding method in which oscillation scanning is periodically effected with a laser beam 4 while moving an object of welding 9 to apply the laser beam to a surface of the object of welding 9 to perform welding, at least one of the output of the laser beam 4, a scanning speed, and a scanning track is controlled, whereby welding is effected with input heat amounts on both left and right sides with respect to the welding progressing direction being substantially different from each other.
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