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US 12,708,958 B2Granted
Welding method and welding apparatus
AssigneeFurukawa Electric Co., Ltd.
InventorsTakashi Kayahara, Takeshi Tanabe, Tomomichi Yasuoka, Takashi Shigematsu, Tomofumi Sato
Life of this patent
Estimating the term…
Abstract
A welding method includes: placing a workpiece including aluminum in a region to which laser light is emitted; and irradiating the laser light to the workpiece to melt an irradiated portion of the work piece to perform welding. Further, the laser light is formed of a main beam and plural auxiliary beams, and the plural auxiliary beams are positioned so as to surround a periphery of the main beam.
Claims18
A welding method comprising:
- placing a workpiece including aluminum in a region to which laser light is emitted;
- and
- irradiating the laser light to the workpiece to melt an irradiated portion of the work piece to perform welding, wherein
- the laser light is formed of a main beam and a plurality of auxiliary beams,
- the plurality of auxiliary beams are positioned to overlap each other continuously so as to form a single ring shape with the main beam as a center of the single ring shape,
- a ratio between power of the main beam and a total power of the plurality of auxiliary beams is 1:9 to 3:7,
- a sweep speed of the laser light is 16.7 mm/sec to 300 mm/sec, and
- the main beam and the plurality of auxiliary beams are generated with a laser output of 4 kW to 12 kW.
5 more elements
A welding apparatus, comprising:
- a laser device;
- and
- an optical head configured to emitting laser light output from the laser device to a workpiece including aluminum and melting an irradiated portion of the workpiece to perform welding, wherein
- the laser light emitted to the workpiece is formed of a main beam and a plurality of auxiliary beams,
- the plurality of auxiliary beams are positioned to overlap each other continuously so as to form a single ring shape with the main beam as a center of the single ring shape,
- a ratio between power of the main beam and a total power of the plurality of auxiliary beams is 1:9 to 3:7,
- a sweep speed of the laser light is 16.7 mm/sec to 300 mm/sec, and
- the main beam and the plurality of auxiliary beams are generated with a laser output of 4 kW to 12 kW.
5 more elements
Dependencies are inferred from the claim text.