Patents by Inventor Hikaru KINASHI
Hikaru KINASHI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230264304Abstract: An arc welding method includes welding a steel sheet while alternately switching feeding of a welding wire between forward feeding and backward feeding. The welding wire contains, in mass % with respect to a total mass to the welding wire, C: more than 0 and 0.30 or less, Si: 0.01 to 0.30, Mn: 0.5 to 2.5, S: 0.001 to 0.020, Ti: 0.05 to 0.30, and optional elements with the remainder being Fe and unavoidable impurities, and a value obtained by 2×[Ti]/[Si]?50×[S] is more than 1.0. The welding is performed by using a shielding gas containing CO2 gas in an amount of 80 vol. % or more with respect to a total volume of the shielding gas at a frequency of 40 Hz or more and 200 Hz or less, where one cycle for determining the frequency is one forward feeding and one backward feeding.Type: ApplicationFiled: August 11, 2021Publication date: August 24, 2023Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hikaru KINASHI, Yasuyuki YOKOTA
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Publication number: 20220331915Abstract: A wire for gas-shielded arc welding includes, based on a total mass of the wire C: 0.01 mass % or more and 0.10 mass % or less, Si: 0.05 mass % or more and 0.55 mass % or less, Mn: 1.60 mass % or more and 2.40 mass % or less, Ti: 0.05 mass % or more and 0.25 mass % or less, Cu: 0.30 mass % or less, Al: 0.10 mass % or less, P: 0.025 mass % or less, and S: 0.010 mass % or less with the remainder being Fe and inevitable impurities. In addition, the following relationship is satisfied: 0.1?[Ti]/[Si]?3.0, where [Si] is the content of Si (mass %) based on the total mass of the wire and [Ti] is the content of Ti (mass %) based on the total mass of the wire.Type: ApplicationFiled: June 10, 2020Publication date: October 20, 2022Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hikaru KINASHI, Jing YU, Yasuyuki YOKOTA
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Patent number: 11407055Abstract: An arc welding method includes performing welding by using a gas and a solid wire. The gas contains Ar. The solid wire includes a steel core wire and a copper plating film formed on a surface of the steel core wire, and the copper plating film has an average grain diameter of 600 nm or less.Type: GrantFiled: June 13, 2018Date of Patent: August 9, 2022Assignee: Kobe Steel, Ltd.Inventors: Hikaru Kinashi, Yasuyuki Yokota, Koji Sato
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Publication number: 20210316386Abstract: Disclosed herein is an arc welding method including arc welding a steel sheet by a pulse control method, wherein: welding is performed using a welding wire and a gas containing Ar at a voltage pulse frequency of 50 Hz or more and 200 Hz or less and a voltage pulse width of 1.5 ms or more and 10 ms or less; and the welding wire contains C and further contains, in mass %: Si: 0.2% or more and 1.1% or less; Mn: 0.2% or more and 1.4% or less; and S: 0.010% or more and 0.050% or less, with the balance being Fe and inevitable impurities.Type: ApplicationFiled: June 25, 2021Publication date: October 14, 2021Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hikaru Kinashi, Yu Umehara, Koji Sato
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Patent number: 11117223Abstract: A wire for gas-shielded arc welding includes, based on a total mass of the wire: C: 0.01 mass % or more and 0.10 mass % or less, Si: 0.05 mass % or more and 0.55 mass % or less, Mn: 1.60 mass % or more and 2.40 mass % or less, Ti: 0.05 mass % or more and 0.25 mass % or less, Cu: 0.01 mass % or more and 0.30 mass % or less, S: 0.001 mass % or more and 0.020 mass % or less, N: 0.0045 mass % or more and 0.0150 mass % or less, Al: 0.10 mass % or less, and P: 0.025 mass % or less, with the remainder being Fe and inevitable impurities. In the wire, the following relationship is satisfied: 0.1?[Ti]/[Si]?3.0, where [Si] is the content of Si (mass %) and [Ti] is the content of Ti (mass %).Type: GrantFiled: May 22, 2020Date of Patent: September 14, 2021Assignee: KOBE STEEL, LTD.Inventors: Kazuya Ikai, Hikaru Kinashi, Yasuyuki Yokota
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Publication number: 20210138591Abstract: A wire for gas-shielded arc welding includes, based on a total mass of the wire: C: 0.01 mass % or more and 0.10 mass % or less, Si: 0.05 mass % or more and 0.55 mass % or less, Mn: 1.60 mass % or more and 2.40 mass % or less, Ti: 0.05 mass % or more and 0.25 mass % or less, Cu: 0.01 mass % or more and 0.30 mass % or less, S: 0.001 mass % or more and 0.020 mass % or less, N: 0.0045 mass % or more and 0.0150 mass % or less, Al: 0.10 mass % or less, and P: 0.025 mass % or less, with the remainder being Fe and inevitable impurities. In the wire, the following relationship is satisfied: 0.1?[Ti]/[Si]?3.0, where [Si] is the content of Si (mass %) and [Ti] is the content of Ti (mass %).Type: ApplicationFiled: May 22, 2020Publication date: May 13, 2021Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Kazuya IKAI, Hikaru KINASHI, Yasuyuki YOKOTA
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Publication number: 20200114453Abstract: An arc welding method includes performing welding by using a gas and a solid wire. The gas contains Ar. The solid wire includes a steel core wire and a copper plating film formed on a surface of the steel core wire, and the copper plating film has an average grain diameter of 600 nm or less.Type: ApplicationFiled: June 13, 2018Publication date: April 16, 2020Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hikaru KINASHI, Yasuyuki YOKOTA, Koji SATO
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Publication number: 20190375038Abstract: Disclosed herein is an arc welding method including welding a steel sheet while controlling feeding of a welding wire in a moving direction. Welding is performed using the welding wire and a gas containing Ar at a frequency of 35 Hz or more and 160 Hz or less in the moving 15 direction of the welding wire. The welding wire contains C and further contains, in mass %, Si: 0.2% or more and 1.3% or less, Mn: 0.2% or more and 1.5% or less, and S: 0.01% or more and 0.05% or less, with the balance being Fe and inevitable impurities.Type: ApplicationFiled: March 2, 2018Publication date: December 12, 2019Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hikaru KINASHI, Yu UMEHARA, Koji SATO