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：US20210162539A1

公开(公告)日：2021-06-03

申请号：US17177341

申请日：2021-02-17

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Takashi KAYAHARA ,  Ryosuke NISHII ,  Satoshi ASANUMA ,  Tomomichi YASUOKA ,  Takashi SHIGEMATSU

IPC: B23K26/26 ,  B23K26/06 ,  B23K26/082

Abstract: A welding method includes: layering two or more plate materials each including a plating plate material having a preform on a surface of which a plating layer is formed to form a workpiece; disposing the workpiece in a region to be irradiated with a processing laser beam; generating the processing laser beam having a power distribution shape in which two or more power regions are disposed along a predetermined direction in a plane perpendicular to a light traveling direction; irradiating a surface of the workpiece with the processing laser beam; and moving the processing laser beam and the workpiece relatively while performing the irradiation, and melting an irradiated area of the workpiece to perform welding while sweeping the processing laser beam in the predetermined direction on the workpiece during a swing of the processing laser beam.

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.