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公开(公告)号：US20240035182A1
公开(公告)日：2024-02-01
申请号：US18256968
申请日：2021-11-29
Applicant: JFE STEEL CORPORATION
Inventor： Takashi UENO , Yoichiro YAMANAKA , Yoshitsugu SUZUKI , Masanari TOMOZAWA , Haruo NAKAMICHI , Takashi KAWANO
Abstract: It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent film wet adhesion and coating secondary adhesion as well as high film corrosion resistance and coating corrosion resistance. It is a surface-treated steel sheet having: a steel sheet; a metallic Cr layer disposed on at least one surface of the steel sheet; and a Cr oxide layer disposed on the metallic Cr layer, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.
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公开(公告)号：US20190242018A1
公开(公告)日：2019-08-08
申请号：US16340134
申请日：2017-10-06
Applicant: JFE STEEL CORPORATION
Inventor： Reona ENDO , Kazuhisa OKAI , Hiroshi KAJIYAMA , Takashi KAWANO
CPC classification number: C23C22/60 , C23C2/06 , C23C2/26 , C23C22/82 , C23C26/00 , C23C28/00 , C23C2222/20
Abstract: Disclosed is a surface-treatment solution for producing a zinc or zinc alloy coated steel sheet with a surface-coating layer that does not contain a chromium compound in the surface-coating layer and that is excellent in all of heat discoloration resistance, heat cracking resistance, planar part anti-corrosion property, corrosion resistance after alkali degreasing, blackening resistance, stack blackening resistance, anti-water stain property, solvent resistance, perspiration resistance, coating adhesion property, and storage stability. The disclosed surface-treatment solution contains a glycidyl group-containing silane coupling agent (A), a tetraalkoxysilane (B), a zirconium carbonate compound (C), and an anionic polyurethane resin (D) having a glass transition temperature (Tg) of 80° C. to 130° C., a vanadium compound (E), a molybdic acid compound (F), and water, the surface-treatment solution having a pH of 8.0 to 10.0, and the amount of each component satisfying a predetermined relationship.
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公开(公告)号：US20230407484A1
公开(公告)日：2023-12-21
申请号：US18251242
申请日：2021-11-05
Applicant: JFE STEEL CORPORATION
Inventor： Shunsuke YAMAMOTO , Katsutoshi TAKASHIMA , Yusuke OKUMURA , Tomomi KANAZAWA , Katsuya HOSHINO , Takashi KAWANO , Takako YAMASHITA , Hiroshi MATSUDA , Yoichi MAKIMIZU
IPC: C23C28/02 , C23C2/28 , C23C2/06 , C22C38/02 , C25D3/20 , C23C2/02 , C22C38/06 , C22C38/04 , C21D8/02
CPC classification number: C23C28/021 , C23C2/28 , C23C2/06 , C22C38/02 , C25D3/20 , C23C2/022 , C22C38/06 , C22C38/04 , C21D8/0236
Abstract: Disclosed is a galvannealed steel sheet including: a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; an Fe-based electroplating layer formed on at least one surface of the Si-containing cold-rolled steel sheet; and a galvannealed layer formed on the Fe-based electroplating layer, in which in an intensity profile measured by glow discharge optical emission spectrometry, ISi,Fe/ISi,bulk is 0.30 or more, and an average value of C concentration in a region ranging from 10 μm to 20 μm in the thickness direction from the interface between the galvannealed layer and the Fe-based electroplating layer towards the Fe-based electroplating layer is 0.10 mass % or less.
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公开(公告)号：US20150314372A1
公开(公告)日：2015-11-05
申请号：US14650092
申请日：2013-12-24
Applicant: JFE STEEL CORPORATION
Inventor： Tomoshige ONO , Yukiko OZAKI , Takashi KAWANO
CPC classification number: B22F1/0011 , B22F1/0059 , B22F1/0062 , B22F1/02 , B22F1/025 , C22C33/0207 , Y10T428/2991
Abstract: An iron-based powder for powder metallurgy effectively prevents agglomeration of a lubricant, has excellent flowability, can evenly fill thin-walled cavities, keeps the ejection force after formation low, and does not lower sintered body strength by adhering either or both of an alloy component and a cutting ability improving agent to the surface of iron powder with a binder that has a melting point of 150° C. or lower, adhering carbon black to the surface of the binder, and setting the amount of free binder to 0.02 mass % or less.
Abstract translation: 用于粉末冶金的铁基粉末有效地防止了润滑剂的团聚，具有优异的流动性，可以均匀地填充薄壁空腔，使形成后的喷射力保持不变，并且通过粘合合金中的任一种或两者不降低烧结体的强度 组合物和切割能力改进剂加入到具有熔点为150℃或更低的粘合剂的铁粉表面上，将炭黑粘合到粘合剂的表面，并将游离粘合剂的量设定为0.02质量％ 或更少。
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Patent Agency Ranking
5.发明公开公开(公告)号：US20240009962A1
公开(公告)日：2024-01-11
申请号：US18251244
申请日：2021-11-05
Applicant: JFE STEEL CORPORATION
Inventor： Shunsuke YAMAMOTO , Yusuke OKUMURA , Katsutoshi TAKASHIMA , Mai AOYAMA , Tomomi KANAZAWA , Katsuya HOSHINO , Yoichi MAKIMIZU , Takashi KAWANO , Takako YAMASHITA , Hiroshi MATSUDA
IPC: B32B15/01 , C22C38/02 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/00 , C21D9/46 , C22C33/04 , C21D8/02 , C21D6/00 , C22C38/32 , C22C38/28 , C22C38/38 , C25D3/20 , C25D5/50 , C23F17/00 , C23C2/02 , C23C2/28 , C23C2/06
CPC classification number: B32B15/011 , C22C38/02 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/002 , C22C38/001 , C21D9/46 , C22C33/04 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0278 , C21D6/001 , C21D6/005 , C21D6/008 , C22C38/32 , C22C38/28 , C22C38/38 , C21D6/002 , C25D3/20 , C25D5/50 , B32B15/01 , C23F17/00 , C23C2/02 , C23C2/28 , C23C2/06
Abstract: To provide an Fe-based electroplated steel sheet that not only has excellent chemical convertibility or excellent coating appearance when subjected to hot-dip galvanizing, but also has excellent resistance to cracking in resistance welding. Disclosed is an Fe-based plated steel sheet including: a cold-rolled steel sheet having a chemical composition containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; and an Fe-based electroplating layer formed on one or both surfaces of the cold-rolled steel sheet with a coating weight per surface of 1.0 g/m2 or more, in which a thickness of an internal oxidation layer is 2.00 μm or less, and an average value of C concentration in a range of 10 μm to 20 μm in a thickness direction from the surface of the Fe-based electroplating layer is 0.10 mass % or less.
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公开(公告)号：US20230374639A1
公开(公告)日：2023-11-23
申请号：US18250979
申请日：2021-11-05
Applicant: JFE STEEL CORPORATION
Inventor： Shunsuke YAMAMOTO , Katsutoshi TAKASHIMA , Yusuke OKUMURA , Tomomi KANAZAWA , Katsuya HOSHINO , Takashi KAWANO , Takako YAMASHITA , Hiroshi MATSUDA , Yoichi MAKIMIZU
IPC: C23C2/40 , C21D8/02 , C21D9/46 , C23C2/06 , C22C38/02 , C22C38/00 , C22C38/04 , C22C38/06 , C25D3/20 , C25D5/36 , C25D5/50 , C25D7/06 , C23C28/02
CPC classification number: C23C2/40 , C21D8/0236 , C21D9/46 , C23C2/06 , C22C38/02 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C25D3/20 , C25D5/36 , C25D5/50 , C25D7/0614 , C23C28/021
Abstract: To provide a steel sheet with excellent resistance to cracking in resistance welding at a welded portion. Disclosed is a galvanized steel sheet including: a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; an Fe-based electroplating layer formed on at least one surface of the Si-containing cold-rolled steel sheet with a coating weight per surface of 5.0 g/m2 or more; and a galvanized layer formed on the Fe-based electroplating layer, in which in an intensity profile measured by glow discharge optical emission spectrometry, ISi,Fe/ISi,bulk is 0.50 or more, and an average value of C concentration in a region ranging from 10 μm to 20 μm from an interface between the galvanized layer and the Fe-based electroplating layer towards the Fe-based electroplating layer is 0.10 mass % or less.
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公开(公告)号：US20240117517A1
公开(公告)日：2024-04-11
申请号：US18250978
申请日：2021-11-05
Applicant: JFE STEEL CORPORATION
Inventor： Shunsuke YAMAMOTO , Katsutoshi TAKASHIMA , Yusuke OKUMURA , Tomomi KANAZAWA , Katsuya HOSHINO , Takashi KAWANO , Takako YAMASHITA , Hiroshi MATSUDA , Yoichi MAKIMIZU
CPC classification number: C25D3/20 , C21D8/0236 , C21D8/0257 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C25D7/0614
Abstract: Disclosed is an Fe-based electroplated steel sheet including: a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % or more and 3.0 mass % or less; and an Fe-based electroplating layer formed on at least one surface of the Si-containing cold-rolled steel sheet with a coating weight per surface of 5.0 g/m2 or more, in which in an intensity profile measured by glow discharge optical emission spectrometry, a peak of emission intensity at wavelengths indicating Si is detected within a range from a surface of the Fe-based electroplating layer to more than 0.2 μm in a thickness direction and not more than a thickness of the Fe-based electroplating layer, and an average value of C concentration in a region ranging from 10 μm to 20 μm in the thickness direction from the surface of the Fe-based electroplating layer is 0.10 mass % or less.
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公开(公告)号：US20240068107A1
公开(公告)日：2024-02-29
申请号：US18256988
申请日：2021-11-29
Applicant: JFE STEEL CORPORATION
Inventor： Takashi UENO , Yoichiro YAMANAKA , Yoshitsugu SUZUKI , Masanari TOMOZAWA , Haruo NAKAMICHI , Takashi KAWANO
CPC classification number: C23C28/345 , C21D9/46 , C23C2/08 , C23C2/40 , C23C28/32 , C25D3/06 , C25D5/12 , C23C2222/10
Abstract: It is provided a surface-treated steel sheet that can be produced without using hexavalent chromium and has excellent sulfide staining resistance and coating secondary adhesion. It is a surface-treated steel sheet having: a Sn plating layer; a metallic Cr layer disposed on the Sn plating layer; and a Cr oxide layer disposed on the metallic Cr layer, on at least one surface of a steel sheet, and the surface-treated steel sheet has a water contact angle of 50° or less and a total atomic ratio of K, Na, Mg, and Ca adsorbed on the surface to Cr of 5% or less.
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公开(公告)号：US20180358565A1
公开(公告)日：2018-12-13
申请号：US15735689
申请日：2016-08-19
Applicant: JFE STEEL CORPORATION
Inventor： Takashi KAWANO , Shin ISHIKAWA , Takuya MURAKAMI
CPC classification number: H01L51/0096 , C25D5/36 , H01L51/0097 , H01L51/4253 , H01L51/44 , Y02E10/549
Abstract: Disclosed is a substrate for a photoelectric conversion element that is low in cost as compared with a conventional ITO/glass substrate, easy to handle, and does not lower the power generation performance of the solar cell. The substrate for a photoelectric conversion element is made of a stainless steel sheet having a passive film on a surface thereof, an atomic ratio Cr/(Fe+Cr) of the passive film on a surface thereof is 0.08 or more.
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