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公开(公告)号：US20220016726A1
公开(公告)日：2022-01-20
申请号：US17344047
申请日：2021-06-10
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto
Abstract: The present disclosure provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the degrees of tensile strength. One aspect of the present disclosure provides a method of resistance spot welding. The method comprises welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes welding while compressing a high-tensile steel plate among the two or more steel plates in a direction intersecting a direction of a thickness of the high-tensile steel plate. The high-tensile steel plate has a tensile strength higher than a tensile strength of another steel plate among the two or more steel plates.
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Patent Agency Ranking
公开(公告)号：US20250114866A1
公开(公告)日：2025-04-10
申请号：US18822236
申请日：2024-09-01
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto
IPC: B23K26/24 , B23K37/04 , B23K103/04
Abstract: Disclosed is a method of manufacturing a welded member with a metal member and a nut welded to each other. The manufacturing method includes bringing the nut into abutment with a welding surface of a plate-shaped portion of the metal member and pressing at least one of the plate-shaped portion or the nut to bring the nut into close contact with the welding surface. The manufacturing method further includes irradiating a portion of the nut in close contact with the welding surface with a beam from a side opposite to the welding surface of the plate-shaped portion to weld the metal member and the nut to each other by laser welding.
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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：US12246388B2
公开(公告)日：2025-03-11
申请号：US17344047
申请日：2021-06-10
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto
Abstract: The present disclosure provides a method of resistance spot welding that can inhibit Liquid Metal Embrittlement-induced cracking in zinc-coated steel plates irrespective of the degrees of tensile strength. One aspect of the present disclosure provides a method of resistance spot welding. The method comprises welding a workpiece with a resistance spot welding apparatus. The workpiece includes two or more steel plates in an overlapping state. The two or more steel plates include at least one steel plate coated with zinc. The welding includes welding while compressing a high-tensile steel plate among the two or more steel plates in a direction intersecting a direction of a thickness of the high-tensile steel plate. The high-tensile steel plate has a tensile strength higher than a tensile strength of another steel plate among the two or more steel plates.
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公开(公告)号：US11786992B2
公开(公告)日：2023-10-17
申请号：US17150583
申请日：2021-01-15
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto , Keigo Yasuda , Koji Yamaguchi
CPC classification number: B23K26/26 , B21D35/007 , B23K10/02 , B23K26/0093 , B23K26/21
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：US20230001510A1
公开(公告)日：2023-01-05
申请号：US17851355
申请日：2022-06-28
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shota Muto , Shinya Azuchi , Koji Yamaguchi
IPC: B23K26/26
Abstract: In a manufacturing method of a tailored blank including a first steel plate and a second steel plate to be joined by butt welding, the first and second steel plates are butt welded with a laser beam. The laser beam has a power density q1 in a first region, a power density q2 in a second region, a power density q3 in a third region, and a power density q4 in a fourth region. The power density q1, the power density q2, the power density q3, and the power density q4 satisfy a relationship of q1>q2>q3>q4.
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