公开(公告)号：US12134153B2

公开(公告)日：2024-11-05

申请号：US16311268

申请日：2017-06-19

Applicant: Kobe Steel, Ltd. ,  JFE Steel Corporation

Inventor： Minoru Miyata ,  Reiichi Suzuki ,  Hiroshi Matsuda ,  Rinsei Ikeda ,  Sachiko Suzuki ,  Satoru Ando

IPC: B23K9/173 ,  B23K9/025 ,  B23K9/23 ,  B23K35/30 ,  B23K35/32 ,  B23K35/38

Abstract: A gas-shielded arc welding method includes welding a steel plate having a tensile strength of 780 MPa or more while feeding a consumable electrode via a welding torch and flowing a shielding gas. The consumable electrode includes, in mass %, C: 0 to 0.20%, Si: 0 to 0.50%, Mn: 0 to 0.50%, Cr: 1.00% to 9.00%, S: 0.0020% to 0.0600%, and Ni: 0 to 0.50%. The shielding gas includes, in vol. %, at least one of CO2 and O2: 1% to 15% in total, with the remainder being Ar and unavoidable impurities. Welding is performed under the condition satisfying the relationship of 1≤{−0.05×[CO2+O2]}+[Cr]≤8.3, and [Cr] represents the content of Cr in the consumable electrode, and [CO2+O2] represents a total content of at least one of CO2 and O2 in the shielding gas.

公开(公告)号：US11253944B2

公开(公告)日：2022-02-22

申请号：US16477714

申请日：2018-01-10

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD).

Inventor： Kenichi Watanabe ,  Reiichi Suzuki ,  Hideto Katsuma

IPC: B23K11/11 ,  B23K11/20 ,  B23K26/22 ,  B23K37/04 ,  B23K103/20

Abstract: A steel plate frame and a thin plate are made of different materials. A plurality of through holes are formed in a portion of the thin plate to be placed on the steel plate frame. A plurality of projections 6c are formed on a support plate, each of the projections being allowed to be inserted into a corresponding one of the through holes. An adhesive is applied to a portion of the steel plate frame on which the thin plate is placed. The thin plate is placed on the steel plate frame, and the steel plate frame and the thin plate are bonded together by the adhesive. The support plate is placed on the thin plate to insert the projections into the through holes. The projections and the steel plate frame are welded to form a plurality of welded spots.

公开(公告)号：US10682718B2

公开(公告)日：2020-06-16

申请号：US15747931

申请日：2016-07-12

Applicant: Kobe Steel, Ltd.

Inventor： Minoru Miyata ,  Reiichi Suzuki

IPC: B23K9/09 ,  B23K9/23 ,  B23K9/16 ,  B23K9/173 ,  B23K9/10 ,  B23K103/04 ,  B23K101/34

Abstract: A method for welding a galvanized steel sheet includes utilizing a pulse welding of repeatedly applying a pulse peak current and a base current, setting a welding speed to 100 cm/min or less, and using a shielding gas in which 1 vol % or more and 10 vol % or less of at least either one of CO2 and O2 is added to Ar. The pulse peak current has a pulse peak time being in a range of 7% or more and less than 50% of one period depending on a sheet thickness of the galvanized steel sheet.

公开(公告)号：US09403232B2

公开(公告)日：2016-08-02

申请号：US13933484

申请日：2013-07-02

Applicant: Kobe Steel, Ltd.

Inventor： Reiichi Suzuki ,  Kei Yamazaki

IPC: B23K9/02 ,  B23K9/09 ,  B23K9/025 ,  B23K9/028 ,  B23K9/095 ,  B23K9/10 ,  B23K9/173 ,  B23K9/23 ,  B23K37/02

CPC classification number: B23K9/09 ,  B23K9/0209 ,  B23K9/0216 ,  B23K9/025 ,  B23K9/0282 ,  B23K9/095 ,  B23K9/1043 ,  B23K9/173 ,  B23K9/1735 ,  B23K9/23 ,  B23K37/0217 ,  B23K37/0276 ,  B23K37/0282 ,  B23K2101/06 ,  B23K2101/18

Abstract: An arc welding apparatus includes a lifting motor. A speed adjustment circuit controls the lifting motor such that the rising speed of the welder decreases if a current of the welding power source is smaller than a set value, or increases if the value of the current is larger than the set value. A voltage adjustment circuit controls the welding power source such that the voltage increases if the number of times that the voltage falls below a determination voltage is larger than a set number of times or if periods for which the voltage remains below the determination voltage are longer than a set time, or decreases if the number of times that the voltage falls below a determination voltage is smaller than a set number of times or if periods for which the voltage remains below the determination voltage is shorter than a set time.

Abstract translation: 电弧焊装置包括提升电动机。 速度调节电路控制提升电动机，使得如果焊接电源的电流小于设定值，则焊接机的上升速度降低，或者如果电流值大于设定值则增加。 电压调节电路控制焊接电源，使得如果电压低于确定电压的次数大于设定次数或者电压保持低于确定电压的周期的时间长于电压，则电压将增加 如果电压低于确定电压的次数小于设定次数，或者如果电压保持低于确定电压的周期短于设定时间，则设定时间或者减小。

公开(公告)号：US11511365B2

公开(公告)日：2022-11-29

申请号：US15545839

申请日：2016-01-04

Applicant: Kobe Steel, Ltd.

Inventor： Naoki Kawabe ,  Tokuji Maruyama ,  Minoru Miyata ,  Kei Yamazaki ,  Reiichi Suzuki

IPC: B23K9/173 ,  B23K9/32 ,  B23K9/29 ,  B23K35/02 ,  B23K35/36 ,  B23K35/30

Abstract: A welding system includes a welding torch that welds a workpiece by using a wire, a suction device that sucks shielding gas, and a sucked shielding gas supply path for allowing the sucked shielding gas to flow, wherein the welding torch includes a contact chip that guides the wire, a shielding gas supply nozzle that supplies the shielding gas to a weld zone, and a suction nozzle that surrounds a periphery of the wire protruding from the contact chip, and is opened toward a tip of the wire to suck the shielding gas.

公开(公告)号：US09616528B2

公开(公告)日：2017-04-11

申请号：US14382691

申请日：2013-02-28

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)

Inventor： Shun Izutani ,  Kei Yamazaki ,  Reiichi Suzuki ,  Keiichiro Yanagi ,  Yuji Ueda ,  Kazuki Nakamura ,  Toshiro Uezono

IPC: B23K9/16 ,  B23K9/173 ,  B23K35/02 ,  B23K9/23 ,  B23K35/30 ,  B23K9/025 ,  B23K9/09 ,  B23K101/00 ,  B23K101/34 ,  B23K103/04

CPC classification number: B23K35/0261 ,  B23K9/025 ,  B23K9/093 ,  B23K9/16 ,  B23K9/173 ,  B23K9/23 ,  B23K35/3053 ,  B23K2101/006 ,  B23K2101/34 ,  B23K2103/04

Abstract: A solid wire is for gas-shielded arc welding, using a shielding gas, and for galvanized steel sheet welding. The solid wire comprises, to the mass of the whole of the solid wire, predetermined amount of C, Si, Mn, P, S, O, and Cr, with the balance consisting Fe and inevitable impurities. The solid wire satisfies “1.0≦(percentage by mass of Si+that by mass of Mn)/{100(that by mass of S+that by mass of O}≦4.0” and “0.50≦percentage by mass of Mn/that by mass of Si≦2.00”. The shielding gas is an Ar gas comprising 25 to 40% of CO2 gas. It is achieved to improve spatter-decreasing performance and pore-resisting performance (performance of restraining the generation of porosity defects, such as pits and blowholes).

公开(公告)号：US20130240488A1

公开(公告)日：2013-09-19

申请号：US13772599

申请日：2013-02-21

Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

Inventor： Minoru MIYATA ,  Reiichi Suzuki ,  Shun Izutani

IPC: B23K9/173

CPC classification number: B23K9/173 ,  B23K35/0266 ,  B23K35/308 ,  B23K35/3086 ,  B23K35/383 ,  C22C38/26 ,  C22C38/28 ,  C22C38/38

Abstract: There is provided a flux-cored wire containing flux within a stainless steel or mild steel outer cover for use in stainless steel welding and gas-shielded arc welding using a shielding gas. The flux-cored wire contains, based on the total mass of the flux-cored wire, predetermined amounts of C, Si, Mn, P, S, Cr, Ti, and O. The remainder are Fe and incidental impurities. The shielding gas is pure Ar gas.

Abstract translation: 在不锈钢或软钢外壳内提供含有焊剂的药芯焊丝，用于不锈钢焊接和使用保护气体的气体保护电弧焊接。 药芯焊丝基于药芯焊丝的总质量含有预定量的C，Si，Mn，P，S，Cr，Ti和O.剩余部分是Fe和杂质。 保护气体是纯Ar气体。

公开(公告)号：US20130233833A1

公开(公告)日：2013-09-12

申请号：US13765818

申请日：2013-02-13

Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

Inventor： Yimin YUAN ,  Kei Yamazaki ,  Reiichi Suzuki

IPC: B23K35/38 ,  B23K9/16

CPC classification number: B23K35/38 ,  B23K9/02 ,  B23K9/16 ,  B23K9/1735

Abstract: In a tandem gas-shielded arc welding method, carbon dioxide is used as a shielding gas for a leading electrode formed by a solid wire, an argon-carbon dioxide gas mixture containing at least 60% by volume of argon gas is used as a shielding gas for a trailing electrode formed by a solid wire or a flux-cored wire, both the leading electrode and the trailing electrode have a reverse polarity, the leading electrode satisfies the relationships “5.00≦(I·V·10−8)/(Wf·πr2)≦10.00” and “(I2·10−3)/V≧4.50”, and the trailing electrode satisfies the relationships “4.00≦(I·V·10−8)/(Wf·πr2)≦7.00” and “(I2 10−3)/V≧8.00”.

Abstract translation: 在串联气体保护电弧焊接方法中，使用二氧化碳作为由实线形成的引导电极的保护气体，使用含有至少60体积％氩气的氩 - 二氧化碳气体混合物作为屏蔽 由实线或药芯焊丝形成的拖尾电极的气体，前导电极和后沿电极都具有相反极性，前导电极满足关系“5.00 @（I·V·10-8）/（ Wf·pir2）@ 10.00“和”（I2·10-3）/ V> = 4.50“，尾电极满足关系”4.00 @（I·V·10-8）/（Wf·pir2）@ 7.00 “和”（I210-3）/ V> = 8.00“。

公开(公告)号：US11982307B2

公开(公告)日：2024-05-14

申请号：US16973949

申请日：2019-05-31

Applicant: KOBE STEEL, LTD.

Inventor： Reiichi Suzuki

IPC: F16B5/08 ,  B23K9/007 ,  B23K9/16

CPC classification number: F16B5/08 ,  B23K9/007 ,  B23K9/16

Abstract: The present invention relates to a method for joining a plated steel sheet, in which at least one of a first steel sheet and a second steel sheet is a plated steel sheet, and the first and second steel sheets overlapped with each other are subjected to an arc spot welding. The method includes press-working the first steel sheet into a desired shape and at the same time forming a linear groove on an overlapping surface with the second steel sheet of the first steel sheet, overlapping the first and second steel sheets, and setting a welding torch with the groove as a target position, and performing the arc spot welding so as to overlap the groove when viewed from a direction perpendicular to the overlapping surface.

公开(公告)号：US11318567B2

公开(公告)日：2022-05-03

申请号：US16094386

申请日：2017-04-25

Applicant: Kobe Steel, Ltd.

Inventor： Naoki Kawabe ,  Eri Yamamoto ,  Kei Yamazaki ,  Reiichi Suzuki

IPC: B23K35/368 ,  C22C38/46 ,  B23K35/30 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

Abstract: In this flux-cored wire, the contents of F, Li, acid-soluble Al, Mg, S, CO2, Ba, Ca, Sr, REM, P, C which is not derived from a carbonate, Mn, Ni, and Cu are set to fall within prescribed ranges with respect to the total mass of the wire, and the blending ratio among these components is set to fall within a particular range.