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公开(公告)号：US10030290B2
公开(公告)日：2018-07-24
申请号：US14438993
申请日：2013-10-28
Applicant: JFE Steel Corporation
Inventor： Tatsuya Miyoshi , Seiji Nakajima , Satoru Ando
IPC: C22C38/06 , C22C38/38 , C22C38/34 , B21D37/16 , C22C18/00 , C22C19/03 , C22C38/00 , C22C38/60 , C23C28/00 , C22C18/04 , C25D3/56 , C25D5/14 , C25D5/48 , B32B15/01 , C22C38/02 , C22C38/04 , C22C38/28 , C22C38/32 , C23C2/06 , C23C2/26 , C23C2/40 , C21D1/673 , C25D5/50 , C25D5/10 , C25D7/06 , C21D9/00 , C21D1/18
Abstract: A steel sheet for hot press-forming includes a zinc coating layer and a Si-containing compound layer in this order on a base steel sheet, wherein the Si-containing compound layer contains a silicone resin having an organic functional group of a carbon number of 4 or more.
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公开(公告)号：US09963755B2
公开(公告)日：2018-05-08
申请号：US14680302
申请日：2015-04-07
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C23C30/00 , C23C28/00 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/34 , C22C38/32 , C22C38/28 , C22C38/14 , C22C38/60 , C22C38/06 , C22C38/38 , B32B15/00 , C21D8/02 , C23C2/28 , B32B15/01 , B32B15/04 , C23C2/06 , B32B15/18 , C22C18/00 , C22C38/18 , C23C10/28 , C25D5/48 , C25D5/50 , C21D1/673 , C23C2/26 , C23C10/60 , C23C26/00 , C25D3/56 , C21D8/04
CPC classification number: C21D8/0247 , B32B15/01 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/673 , C21D8/0457 , C21D2251/02 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/06 , C23C2/26 , C23C2/28 , C23C10/28 , C23C10/60 , C23C26/00 , C23C28/321 , C23C28/322 , C23C28/325 , C23C28/345 , C23C30/005 , C25D3/565 , C25D5/48 , C25D5/50 , Y10T428/12486 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12674 , Y10T428/12757 , Y10T428/12792 , Y10T428/12799 , Y10T428/12806 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/264 , Y10T428/265
Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
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公开(公告)号：US10253386B2
公开(公告)日：2019-04-09
申请号：US14382664
申请日：2013-03-04
Applicant: JFE STEEL CORPORATION
Inventor： Tatsuya Miyoshi , Seiji Nakajima , Satoru Ando
IPC: B32B15/00 , C21D8/02 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C21D9/46 , C22C18/00 , C22C21/10 , C22C38/00 , C22C38/60 , C21D1/673 , B32B15/01 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/28 , C22C38/32 , B21D22/02 , C21D7/13
Abstract: The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/m2 on the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.
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Patent Agency Ranking
公开(公告)号：US20140216610A1
公开(公告)日：2014-08-07
申请号：US14093995
申请日：2013-12-02
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C21D8/02
CPC classification number: C21D8/0247 , B32B15/01 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/673 , C21D8/0457 , C21D2251/02 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/06 , C23C2/26 , C23C2/28 , C23C10/28 , C23C10/60 , C23C26/00 , C23C28/321 , C23C28/322 , C23C28/325 , C23C28/345 , C23C30/005 , C25D3/565 , C25D5/48 , C25D5/50 , Y10T428/12486 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12674 , Y10T428/12757 , Y10T428/12792 , Y10T428/12799 , Y10T428/12806 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/264 , Y10T428/265
Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
Abstract translation: 热压部件包括钢板，存在于钢板的表层中的Ni扩散区域和在Ni扩散区域上依次设置的金属间化合物层和ZnO层，金属间化合物层 对应于存在于Zn-Ni合金的相平衡图中的γ相，其中在25℃±5℃下在0.5M NaCl饱和空气饱和溶液中指示的自发浸渍电位为-600至-360 基于标准氢电极的mV。
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公开(公告)号：US10316381B2
公开(公告)日：2019-06-11
申请号：US14094003
申请日：2013-12-02
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C21D8/02 , C23C2/28 , B32B15/01 , B32B15/04 , C23C2/06 , B32B15/18 , C25D3/56 , B21D22/20 , C21D8/00 , B21D22/00 , C22C18/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/32 , C22C38/60 , C23C10/28 , C25D5/48 , C25D5/50 , C21D1/673 , C23C2/26 , C23C10/60 , C23C26/00 , C23C28/00 , C22C38/00 , C22C38/14 , C22C38/28 , C22C38/34 , C22C38/38 , C23C30/00 , C21D8/04
Abstract: A method is provided for producing a hot-pressed member including heating a Ni-based coated steel sheet, which includes, on a surface thereof, a Zn—Ni alloy coating layer containing 13% by mass or more of Ni, in a temperature region of an Ac3 transformation point to 1200° C.; and then hot-pressing the steel sheet.
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公开(公告)号：US09598744B2
公开(公告)日：2017-03-21
申请号：US14093995
申请日：2013-12-02
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C21D8/02 , C23C2/28 , B32B15/01 , C22C18/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/32 , C22C38/60 , C23C10/28 , C25D5/48 , C25D5/50 , C21D1/673 , C23C2/26 , C23C10/60 , C23C26/00 , C23C28/00 , C22C38/00 , C22C38/14 , C22C38/28 , C22C38/34 , C22C38/38 , C23C30/00 , C25D3/56 , C21D8/04
CPC classification number: C21D8/0247 , B32B15/01 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/673 , C21D8/0457 , C21D2251/02 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/06 , C23C2/26 , C23C2/28 , C23C10/28 , C23C10/60 , C23C26/00 , C23C28/321 , C23C28/322 , C23C28/325 , C23C28/345 , C23C30/005 , C25D3/565 , C25D5/48 , C25D5/50 , Y10T428/12486 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12674 , Y10T428/12757 , Y10T428/12792 , Y10T428/12799 , Y10T428/12806 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/264 , Y10T428/265
Abstract: A method for producing a hot-pressed member includes heating a coated steel sheet, which includes, on a surface thereof, a Zn—Ni alloy coating layer containing 10% by mass or more and less than 13% by mass of Ni at a coating weight of over 50 g/m2 per side of the steel sheet, in a temperature region of an Ac3 transformation point to 1200° C. at an average heating rate of 12° C./second or more, and then hot-pressing the steel sheet.
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公开(公告)号：US20140216611A1
公开(公告)日：2014-08-07
申请号：US14094003
申请日：2013-12-02
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C21D8/02
CPC classification number: C21D8/0247 , B32B15/01 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/673 , C21D8/0457 , C21D2251/02 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/06 , C23C2/26 , C23C2/28 , C23C10/28 , C23C10/60 , C23C26/00 , C23C28/321 , C23C28/322 , C23C28/325 , C23C28/345 , C23C30/005 , C25D3/565 , C25D5/48 , C25D5/50 , Y10T428/12486 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12674 , Y10T428/12757 , Y10T428/12792 , Y10T428/12799 , Y10T428/12806 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/264 , Y10T428/265
Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
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公开(公告)号：US20150211127A1
公开(公告)日：2015-07-30
申请号：US14680302
申请日：2015-04-07
Applicant: JFE STEEL CORPORATION
Inventor： Hiroki Nakamaru , Seiji Nakajima , Tatsuya Miyoshi , Hiroyuki Masuoka , Shinji Ootsuka
IPC: C23C30/00 , C22C38/04 , C22C38/02 , C22C38/00 , C23C28/00 , C22C38/34 , C22C38/32 , C22C38/28 , C22C38/14 , C22C38/60 , C22C38/06 , C22C38/38
CPC classification number: C21D8/0247 , B32B15/01 , B32B15/013 , B32B15/015 , B32B15/04 , B32B15/043 , B32B15/18 , C21D1/673 , C21D8/0457 , C21D2251/02 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/18 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/60 , C23C2/06 , C23C2/26 , C23C2/28 , C23C10/28 , C23C10/60 , C23C26/00 , C23C28/321 , C23C28/322 , C23C28/325 , C23C28/345 , C23C30/005 , C25D3/565 , C25D5/48 , C25D5/50 , Y10T428/12486 , Y10T428/1259 , Y10T428/12611 , Y10T428/12618 , Y10T428/1266 , Y10T428/12674 , Y10T428/12757 , Y10T428/12792 , Y10T428/12799 , Y10T428/12806 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/264 , Y10T428/265
Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.
Abstract translation: 热压部件包括钢板，存在于钢板的表层中的Ni扩散区域和在Ni扩散区域上依次设置的金属间化合物层和ZnO层，金属间化合物层 对应于存在于Zn-Ni合金的相平衡图中的γ相，其中在25℃±5℃下在0.5M NaCl饱和空气饱和溶液中指示的自发浸渍电位为-600至-360 基于标准氢电极的mV。
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