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    WELDING METHOD AND WELDING APPARATUS
    2.
    发明申请
    WELDING METHOD AND WELDING APPARATUS 有权

    公开(公告)号：US20230001508A1

    公开(公告)日：2023-01-05

    申请号：US17932041

    申请日：2022-09-14

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Keigo MATSUNAGA ,  Takashi KAYAHARA ,  Tomomichi YASUOKA ,  Kazuki TAKADA ,  Takashi SHIGEMATSU

    IPC: B23K26/21 ,  B23K26/073 ,  B23K26/067

    Abstract: A welding method includes: irradiating a surface of a workpiece with a laser light that moves relatively to the workpiece in a sweep direction; and performing welding by melting a part of the workpiece irradiated with the laser light. The laser light includes a plurality of beams, the plurality of beams include at least one main beam and at least one sub beam smaller in power than the main beam, a main power region including the at least one main beam and a sub power region including the at least one sub beam are formed on the surface, and a minimum distance between centers of adjacent ones of the plurality of beams on the surface is 75 μm or less.

    WELDING METHOD AND WELDING APPARATUS
    3.
    发明公开
    WELDING METHOD AND WELDING APPARATUS 审中-公开

    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.

    WELDING METHOD AND WELDING APPARATUS
    4.
    发明申请
    WELDING METHOD AND WELDING APPARATUS 有权

    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.

    WELDING METHOD AND WELDING APPARATUS
    7.
    发明申请
    WELDING METHOD AND WELDING APPARATUS 有权

    公开(公告)号：US20210086295A1

    公开(公告)日：2021-03-25

    申请号：US17115013

    申请日：2020-12-08

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Ryosuke NISHII ,  Kousuke KASHIWAGI ,  Takashi KAYAHARA ,  Tomomichi YASUOKA ,  Takashi SHIGEMATSU

    IPC: B23K26/067 ,  B23K26/21 ,  B23K26/06

    Abstract: A welding method includes: disposing a workpiece formed by stacking a plurality of metal foils in an area to be irradiated with laser light that contains a plurality of beams; irradiating a surface of the workpiece with the beams of the laser light by dispersing positions of the beams such that centers of the beams do not overlap with each other within a prescribed area on the surface; melting an irradiated part of the workpiece and performing welding; and setting each of the beams to have a power density with which no hole opens in the metal foils, and setting the power density of the beams and dispersing irradiating positions to be emitted so as to form a weld pool penetrating the workpiece by the beams.

    LASER CUTTING METHOD AND LASER CUTTING APPARATUS
    9.
    发明申请
    LASER CUTTING METHOD AND LASER CUTTING APPARATUS 有权

    公开(公告)号：US20250001526A1

    公开(公告)日：2025-01-02

    申请号：US18885803

    申请日：2024-09-16

    Applicant: FURUKAWA ELECTRIC CO., LTD.

    Inventor： Keigo MATSUNAGA ,  Yusuke NOGAMI ,  Takashi KAYAHARA

    IPC: B23K26/38

    Abstract: A laser cutting method includes: performing laser cutting on a metal foil by scanning, on a front surface of the metal foil with respect to the front surface, the front surface while irradiating the front surface with laser light. The laser light includes a plurality of beams, and the plurality of beams are arranged to form a spot group including a plurality of spots separated in a relative scanning direction on the front surface.

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