公开(公告)号：US20240326161A1

公开(公告)日：2024-10-03

申请号：US18744086

申请日：2024-06-14

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomomichi YASUOKA ,  Takashi KAYAHARA ,  Toshiaki SAKAI ,  Ryosuke NISHII ,  Takashi SHIGEMATSU

IPC: B23K26/06 ,  B23K26/21

CPC classification number: B23K26/0608 ,  B23K26/0648 ,  B23K26/21

Abstract: A method of welding a workpiece by using a laser is provided which includes disposing a workpiece in a region to be irradiated with laser light from a laser oscillator; and irradiating the workpiece with the laser light from the laser oscillator such that an irradiated portion of the workpiece is melted and welded while sweeping the laser light over the workpiece by relatively moving the laser light and the workpiece. The laser light is formed of a main beam and an auxiliary beam, at least part of the auxiliary beam being disposed anteriorly in a sweep direction, and the main beam has a power density equal to or greater than a power density of the auxiliary beam.

公开(公告)号：US20210170527A1

公开(公告)日：2021-06-10

申请号：US17179505

申请日：2021-02-19

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomomichi YASUOKA ,  Takashi KAYAHARA ,  Toshiaki SAKAI ,  Ryosuke NISHII ,  Takashi SHIGEMATSU

IPC: B23K26/21 ,  B23K26/08 ,  B23K26/00 ,  B23K26/06

Abstract: A welding method includes a step of, while irradiating laser beam toward a workpiece, relatively moving the laser beam and the workpiece and, while sweeping the laser beam on the workpiece, melting the workpiece in an irradiated portion to perform welding. Further, the laser beam is configured by a main power region and a sub-power region, at least a part of the sub-power region is present on a sweeping direction side of the main power region, a power density of the main power region is equal to or higher than a power density of the sub-power region, and the power density of the main power region is at least power density that can generate a keyhole.

公开(公告)号：US20230311243A1

公开(公告)日：2023-10-05

申请号：US18301459

申请日：2023-04-17

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Nobuyasu MATSUMOTO ,  Tomomichi YASUOKA ,  Sayo SUGA ,  Toshiaki SAKAI ,  Masamitsu KANEKO ,  Takashi SHIGEMATSU ,  Kazuyuki UMENO ,  Jun TERADA

IPC: B23K26/06 ,  B23K26/24

CPC classification number: B23K26/0608 ,  B23K26/24 ,  G02B27/0944

Abstract: A laser welding method includes: forming a molten weld pool by emitting laser light including a main power region and a sub-power region onto a workpiece, the main power region including at least one main beam, the sub-power region including at least one sub-beam having a lower power density than power density of the main beam; and solidifying the molten weld pool. The sub-beam is emitted onto the workpiece such that a void formed inside the molten weld pool escapes to outside of the molten weld pool before the molten weld pool becomes solidified.

公开(公告)号：US20210031301A1

公开(公告)日：2021-02-04

申请号：US17066535

申请日：2020-10-09

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomomichi YASUOKA ,  Takashi KAYAHARA ,  Toshiaki SAKAI ,  Ryosuke NISHII ,  Takashi SHIGEMATSU

IPC: B23K26/06 ,  B23K26/067 ,  B23K26/08 ,  B23K26/24

Abstract: A welding method includes: arranging a workpiece containing copper in a region to be irradiated with laser light; and irradiating the workpiece with the laser light to melt and weld an irradiated portion of the workpiece. Further, the laser light is formed of a main beam and a plurality of sub beams, and a ratio of power of the main beam to total power of the plurality of sub beams is 72:1 to 3:7.

公开(公告)号：US20230150057A1

公开(公告)日：2023-05-18

申请号：US18155838

申请日：2023-01-18

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Keigo MATSUNAGA ,  Taro MURAYAMA ,  Toshiaki SAKAI ,  Takashi KAYAHARA ,  Takashi SHIGEMATSU

IPC: B23K26/0622 ,  B23K26/38

CPC classification number: B23K26/0622 ,  B23K26/38 ,  B23K2101/34

Abstract: A laser cutting method for metal foil includes: cutting a processing target by laser by intermittently applying a pulse of laser beam to a surface of a metal foil serving as the processing target at a frequency of 1 [MHz] or less.

公开(公告)号：US20230023739A1

公开(公告)日：2023-01-26

申请号：US17951262

申请日：2022-09-23

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomomichi YASUOKA ,  Takashi KAYAHARA ,  Takashi SHIGEMATSU ,  Toshiaki SAKAI

IPC: B23K26/08 ,  B23K26/064 ,  B23K26/073 ,  B23K26/06 ,  B23K26/21

Abstract: A welding method includes: emitting a laser beam to a workpiece including a metal; and welding a portion of the workpiece to which the laser beam is emitted by melting. The laser beam includes a main power region and at least one auxiliary power region, power in the main power region is equal to or higher than power in each of the at least one auxiliary power region, and a power ratio of the power in the main power region and a total of the power in the at least one auxiliary power region is within a range of 144:1 to 1:1.

公开(公告)号：US20190389001A1

公开(公告)日：2019-12-26

申请号：US16558527

申请日：2019-09-03

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Tomomichi YASUOKA ,  Takashi KAYAHARA ,  Toshiaki SAKAI ,  Ryosuke NISHII ,  Takashi SHIGEMATSU

IPC: B23K26/06 ,  B23K26/21

Abstract: A method of welding a workpiece by using a laser is provided which includes disposing a workpiece in a region to be irradiated with laser light from a laser oscillator; and irradiating the workpiece with the laser light from the laser oscillator such that an irradiated portion of the workpiece is melted and welded while sweeping the laser light over the workpiece by relatively moving the laser light and the workpiece. The laser light is formed of a main beam and an auxiliary beam, at least part of the auxiliary beam being disposed anteriorly in a sweep direction, and the main beam has a power density equal to or greater than a power density of the auxiliary beam.

公开(公告)号：US20230101343A1

公开(公告)日：2023-03-30

申请号：US18060718

申请日：2022-12-01

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Nobuyasu MATSUMOTO ,  Fumika NISHINO ,  Masamitsu KANEKO ,  Kazuyuki UMENO ,  Jun TERADA ,  Daeyoul YOON ,  Tomomichi YASUOKA ,  Sayo SUGA ,  Toshiaki SAKAI

IPC: B23K26/244 ,  B32B15/01 ,  H01M50/566 ,  B23K26/06 ,  B23K26/067 ,  B23K26/32

Abstract: A welding method includes: irradiating a plurality of metal foils stacked on a first surface of a metal member in a first direction with laser light to weld the metal member and the plurality of metal foils to each other, the laser light including first laser light having a wavelength of 800 [nm] or more and 1200 [nm] or less and second laser light having a wavelength of 550 [nm] or less, a second surface of a metal foil farthest from the metal member in the first direction among the plurality of metal foils, on a side opposite to the metal member, being irradiated with the laser light.