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25 条记录 (耗时 0.017 秒)

    OIL-WELL-PIPE SCREW JOINT AND METHOD FOR MANUFACTURING OIL-WELL-PIPE SCREW JOINT
    11.
    发明公开
    OIL-WELL-PIPE SCREW JOINT AND METHOD FOR MANUFACTURING OIL-WELL-PIPE SCREW JOINT 审中-公开

    公开(公告)号：EP3633067A1

    公开(公告)日：2020-04-08

    申请号：EP18805314.4

    申请日：2018-05-10

    申请人： Nippon Steel Corporation ,  Vallourec Oil and Gas France

    发明人： KIMOTO, Masanari ,  OSHIMA, Masahiro

    IPC分类号： C23C22/77 ,  C23C22/30 ,  C23C28/00 ,  C25D7/04 ,  F16L15/04

    摘要： This invention provides a threaded connection for oil country tubular goods that exhibits excellent corrosion resistance and galling resistance, and a method for producing the threaded connection for oil country tubular goods. In particular, the method for producing the threaded connection for oil country tubular goods is a method for producing a threaded connection for oil country tubular goods that includes a pin (3) and a box (4). The method includes a Zn-Ni alloy plating layer formation step of forming a Zn-Ni alloy plating layer (100), and a chromate coating formation step of forming a chromate coating (200) after the Zn-Ni alloy plating layer formation step. The chromate coating formation step includes a chromate treatment step and a drying step. The chromate coating formation step satisfy one or more conditions selected from the following conditions 1 to 3.
    Condition 1: stirring speed of the chromating solution in the chromate treatment step: a linear speed of 0.5 m/s or more;
    Condition 2: chromate treatment time in the chromate treatment step: less than 50 seconds; and
    Condition 3: drying temperature in the drying step: 60°C or less.

    OIL-WELL STEEL PIPE
    14.
    发明公开
    OIL-WELL STEEL PIPE 审中-公开

    公开(公告)号：EP4332344A1

    公开(公告)日：2024-03-06

    申请号：EP22795511.9

    申请日：2022-03-31

    申请人： NIPPON STEEL CORPORATION ,  Vallourec Oil and Gas France

    发明人： OSHIMA, Masahiro ,  KIMOTO, Masanari

    IPC分类号： E21B17/00 ,  E21B17/042 ,  F16L15/04

    摘要： An oil-well steel pipe including a Zn-Ni alloy plating layer that has excellent galling resistance is provided. An oil-well steel pipe according to the present disclosure includes: a pipe main body that includes a pin which includes a pin contact surface, and a box which includes a box contact surface; and a Zn-Ni alloy plating layer which is formed on at least one of the pin contact surface and the box contact surface. The chemical composition of the pipe main body contains, in mass%, C: 0.01 to 0.60%, Cr: 0 to 8.0% and Fe: 80.0% or more. In addition, when a region containing C in an amount that, in mass%, is 1.5 times or more greater than the C content of the pipe main body is defined as a C-concentrated layer, the thickness of the C-concentrated layer in the wall thickness direction of the pipe main body is within the range of 0 to 1.50 µm.

    THREADED JOINT FOR PIPES AND METHOD FOR PRODUCING THREADED JOINT FOR PIPES
    15.
    发明公开
    THREADED JOINT FOR PIPES AND METHOD FOR PRODUCING THREADED JOINT FOR PIPES 审中-公开

    公开(公告)号：EP3696456A1

    公开(公告)日：2020-08-19

    申请号：EP18866707.5

    申请日：2018-10-12

    申请人： Nippon Steel Corporation ,  Vallourec Oil and Gas France

    发明人： OSHIMA, Masahiro ,  KIMOTO, Masanari

    IPC分类号： F16L15/04 ,  C23C28/00 ,  F16L15/00 ,  C25D5/26

    摘要： There is provided a threaded connection for pipe having not only galling resistance that requires no surface roughness providing step but is as excellent as galling resistance provided by the surface roughness providing step but low shouldering torque. A threaded connection (50) for pipe includes a pin (13) and a box (14). The threaded connection for pipe includes a Zn-Ni alloy plated layer (21) and a solid lubricant coating (23). The Zn-Ni alloy plated layer (21) is formed on a contact surface of at least one of the pin (13) and the box (14) and contains 10 to 16 mass% of Ni. The solid lubricant coating (23) is formed on the Zn-Ni alloy plated layer (21). The contact surface on which the Zn-Ni alloy plated layer (21) is formed is ground. Now define arithmetic average roughness of the surface of the Zn-Ni alloy plated layer (21) as Ra1, and arithmetic average roughness of the contact surface as Ra2. Ra1 ranges from 0.1 to 3.2 µm. Ra1 is more than Ra2.

    PIPE THREADED JOINT, AND METHOD FOR PRODUCING PIPE THREADED JOINT
    16.
    发明公开
    PIPE THREADED JOINT, AND METHOD FOR PRODUCING PIPE THREADED JOINT 审中-公开

    公开(公告)号：EP3680534A1

    公开(公告)日：2020-07-15

    申请号：EP18851553.0

    申请日：2018-08-30

    申请人： Nippon Steel Corporation ,  Vallourec Oil and Gas France

    发明人： KIMOTO, Masanari ,  OSHIMA, Masahiro

    IPC分类号： F16L15/04 ,  C25D5/26 ,  C25D5/36 ,  C25D7/04 ,  F16L15/00 ,  F16L58/08

    摘要： The present invention provides a threaded connection for pipes and a method for producing the threaded connection for pipes. The threaded connection for pipes includes a pin (4), a box (5) and a Zn-Ni alloy plating layer (6). The pin (4) has a pin-side contact surface (40) that includes a pin-side thread part (41). The box (5) has a box-side contact surface (50) that includes a box-side thread part (51). The Zn-Ni alloy plating layer (6) is formed on at least one of the pin-side contact surface (40) and the box-side contact surface (50). The Zn-Ni alloy plating layer (6) is consisting of Zn, Ni, trace amount of Cr and impurities. The trace amount of Cr content of the Zn-Ni alloy plating layer (6) is 5.0×10 counts/sec or more in terms of Cr intensity as measured by secondary ion mass spectrometry using O 2 + ions as bombarding ions.

    METAL PIPE FOR OIL WELL
    17.
    发明公开
    METAL PIPE FOR OIL WELL 审中-实审

    公开(公告)号：EP4400753A1

    公开(公告)日：2024-07-17

    申请号：EP22867232.5

    申请日：2022-08-26

    申请人： NIPPON STEEL CORPORATION ,  Vallourec Oil and Gas France

    发明人： OSHIMA, Masahiro ,  KIMOTO, Masanari ,  ANTOINE, Alexandre ,  MUNOZ, Daniel

    IPC分类号： F16L15/04 ,  C23C26/00 ,  E21B17/042

    CPC分类号： F16L15/04 ,  E21B17/042 ,  C23C26/00

    摘要： An oil-well metal pipe including a Zn-Ni alloy plating layer that has high adhesion is provided. An oil-well metal pipe according to the present disclosure includes: a pipe main body that includes a pin which includes a pin contact surface including an external thread part and which is formed at a first end portion, and a box which includes a box contact surface including an internal thread part and which is formed at a second end portion; and a Zn-Ni alloy plating layer which is formed on at least one of the pin contact surface and the box contact surface. The X-ray diffraction intensities of the Zn-Ni alloy plating layer satisfy Formula (1). I18/I18+I36+I54≥0.60
    Here, in Formula (1), in units of cps, an X-ray diffraction intensity of {411} and {330} is substituted for I18, an X-ray diffraction intensity of {442} and {600} is substituted for I36, and an X-ray diffraction intensity of {552} is substituted for I54.

    TITANIUM MATERIAL OR TITANIUM ALLOY MATERIAL HAVING SURFACE CONDUCTIVITY, PRODUCTION METHOD THEREFOR, FUEL CELL SEPARATOR USING SAME, AND FUEL CELL
    18.
    发明公开
    TITANIUM MATERIAL OR TITANIUM ALLOY MATERIAL HAVING SURFACE CONDUCTIVITY, PRODUCTION METHOD THEREFOR, FUEL CELL SEPARATOR USING SAME, AND FUEL CELL 审中-公开
    TITAN材料或钛合金材料与表面导电性，工艺制作，燃料电池订单和燃料电池

    公开(公告)号：EP3073558A1

    公开(公告)日：2016-09-28

    申请号：EP15740463.3

    申请日：2015-01-22

    申请人： Nippon Steel & Sumitomo Metal Corporation

    发明人： TAKAHASHI, Kazuhiro ,  KAGAWA, Taku ,  KIMOTO, Masanari ,  IMAMURA, Junko ,  TOKUNO, Kiyonori ,  KURODA, Atsuhiko

    IPC分类号： H01M8/02 ,  C25D9/08 ,  H01M8/10 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18

    摘要： In a titanium material or a titanium alloy material, in an oxide film formed on a surface of a titanium or a titanium alloy, the composition ratio of TiO (I TiO /(I Ti + I TiO )) × 100 found from the maximum intensity of the X-ray diffraction peaks of TiO (I TiO ) and the maximum intensity of the X-ray diffraction peaks of metal titanium (I Ti ) in X-ray diffraction measured at an incident angle to the surface of 0.3° is 0.5% or more. A titanium material or a titanium alloy material, and a fuel cell separator and a polymer electrolyte fuel cell having good contact-to-carbon electrical conductivity and good durability can be provided.

    摘要翻译： 在钛材料或钛合金材料，在氧化膜形成的钛或钛合金，从最大强度发现的TiO（I氧化钛/（I钛+ I的TiO））×100的组成比的表面上的 的TiO（I氧化钛），并在X射线衍射在以入射角测量到的0.3°的表面金属钛（I Ti）的的X射线衍射峰的最大强度的X射线衍射峰的为0.5％ 以上。 可以提供钛材料或钛合金材料，以及燃料电池用隔板和具有良好的接触 - 碳的导电性和良好的耐久性的固体高分子型燃料电池。