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公开(公告)号：US20230091150A1
公开(公告)日：2023-03-23
申请号：US17899805
申请日：2022-08-31
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda
Abstract: Provided is a method of resistance spot welding that can inhibit breakage of a high-tensile steel plate without materials being limited. One aspect of the present disclosure is a method of resistance spot welding including welding of a workpiece made of layered steel plates with a resistance spot welding apparatus. The resistance spot welding apparatus includes a first electrode contacting a first steel plate that is a high-tensile steel plate among the steel plates, and a second electrode contacting a second steel plate having less tensile strength than the first steel plate among the steel plates and configured such that the workpiece is interposed between the first electrode and the second electrode. In the welding, the first steel plate is compressed in a direction that intersects a thickness direction of the first steel plate at least from during welding of the workpiece until completion of welding of the workpiece.
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公开(公告)号：US11453085B2
公开(公告)日：2022-09-27
申请号：US16802105
申请日：2020-02-26
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda , Koji Yamaguchi
IPC: B23K26/242 , B23K26/06 , B23K26/064
Abstract: Firstly, an upper base material is disposed above a lower base material. Secondly, a laser beam is irradiated so that an area irradiated with a laser beam at a time of melting start is formed on only an upper surface of the upper base material or on only both the upper surface and an end surface of the upper base material, whereby the end surface of the upper base material and the lower base material are fillet welded. With the end surface as a reference, a side the upper surface and the lower surface are positioned is a first side, and an opposite side of the first side is a second side. The laser beam is set such that an intensity of the laser beam is lower toward the second side from the first peak area within the irradiation area of the laser beam.
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公开(公告)号：US20210283715A1
公开(公告)日：2021-09-16
申请号：US17150583
申请日：2021-01-15
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto , Keigo Yasuda , Koji Yamaguchi
Abstract: Provided is a method of manufacturing a molded product that can reduce problems on a reinforcing plate during pressing. In one aspect of the present disclosure, the method of manufacturing a molded product includes welding a first metal plate overlaid with a second metal plate to the second metal plate; and pressing the first metal plate and the second metal plate together. In the pressing, a base surface and a wall surface are formed on the first metal plate; the wall surface is disposed to cross the base surface. In the welding, a first welding is performed on a reinforcing portion of the second metal plate that is overlaid on an area of the first metal plate that is formed into the wall surface; and subsequently, a second welding is performed in a direction crossing a direction of the first welding.
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公开(公告)号：US20200290153A1
公开(公告)日：2020-09-17
申请号：US16802105
申请日：2020-02-26
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Keigo Yasuda , Koji Yamaguchi
IPC: B23K26/242 , B23K26/06
Abstract: Firstly, an upper base material is disposed above a lower base material. Secondly, a laser beam is irradiated so that an area irradiated with a laser beam at a time of melting start is formed on only an upper surface of the upper base material or on only both the upper surface and an end surface of the upper base material, whereby the end surface of the upper base material and the lower base material are fillet welded. With the end surface as a reference, a side the upper surface and the lower surface are positioned is a first side, and an opposite side of the first side is a second side. The laser beam is set such that an intensity of the laser beam is lower toward the second side from the first peak area within the irradiation area of the laser beam.
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