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1.发明公开
公开(公告)号：EP4296395A1
公开(公告)日：2023-12-27
申请号：EP22780116.4
申请日：2022-03-16
摘要： An object of the present invention is to provide a steel pipe for high-pressure hydrogen having high strength and a low fatigue crack growth rate in a region in which ΔK, which is related to fatigue crack growth resistance, is 10 MPa·m 1/2 or less.
A steel pipe for high-pressure hydrogen, the steel pipe having a chemical composition containing, by mass%, C: 0.05% to 0.60%, Si: 0.001% to 2.0%, Mn: 0.01% to 5.0%, P: 0.030% or less, S: 0.010% or less, N: 0.010% or less, Al: 0.0001% to 1.00%, O: 0.010% or less, H: 0.00010% or less, and a balance of Fe and incidental impurities and a metallic microstructure including, in terms of area fraction, 3% or less (including 0%) of retained austenite, in which the number of inclusions having an aspect ratio of 2.0 or more and a length of 10 um or more is 15/100 mm 2 or less.-
公开(公告)号：EP4290102A1
公开(公告)日：2023-12-13
申请号：EP22749611.4
申请日：2022-01-28
摘要： A high-pressure hydrogen container according to the present disclosure reduces occurrence of a damage that is caused by diffusion of hydrogen into a metallic structure. The high-pressure hydrogen container includes: a cylinder body made of metal and provided to store high-pressure hydrogen; and a lid member that closes an end portion of the cylinder body. The cylinder body includes: a joining portion that fixes the lid member to the end portion of the cylinder body in a direction along a center axis of the cylinder body; a cylinder portion that forms an outer shell of a storage portion configured to store high-pressure hydrogen; and a sealing surface located between the joining portion and the cylinder portion in the direction along the center axis, and formed at an inner surface of the cylinder body. The lid member includes a sealing portion that abuts the sealing surface of the cylinder body, and a fixation portion fixed to the joining portion of the cylinder body. At least H
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公开(公告)号：EP3812758A1
公开(公告)日：2021-04-28
申请号：EP19823505.3
申请日：2019-06-21
摘要： A life estimation apparatus for a pressure accumulator estimates the life of the pressure accumulator based on an AE signal for the pressure accumulator. The life estimation apparatus includes: an AE sensor that is provided at the pressure accumulator and detects the AE signal; and an estimation unit that sets a point of time at which the AE sensor detects a damage AE signal that is generated from the pressure accumulator because of damage of a material during use of the pressure accumulator, as a minimum initial flaw generation time point that is a point of time at which a minimum initial flaw of the pressure accumulator that is detected by a non-destructive inspection method is generated in shipping of the pressure accumulator.
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公开(公告)号：EP4239234A1
公开(公告)日：2023-09-06
申请号：EP21885965.0
申请日：2021-10-18
摘要： Provided is a steel pipe or tube for hydrogen gas that has both excellent hydrogen embrittlement resistance and high productivity and can be used very suitably as parts of pressure vessels for hydrogen gas. The steel pipe or tube for hydrogen gas having a finish-polished inner surface, in which the inclination angle of a polishing trace present on the inner surface with respect to a circumferential direction of the steel pipe or tube for hydrogen gas is 0° to 30°.
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公开(公告)号：EP3812643A1
公开(公告)日：2021-04-28
申请号：EP19822713.4
申请日：2019-06-21
摘要： A manufacturing method for manufacturing a pressure accumulator, using an AE signal for the pressure accumulator, includes: a first estimation step of estimating with an AE sensor provided at the pressure accumulator, a range of stress levels at each of which a damage AE signal that is generated from the pressure accumulator because of damage of material of the pressure accumulator is in a predetermined state; and a first design step of designing the pressure accumulator such that a minimum thickness of the pressure accumulator is determined based on the stress level range estimated in the first estimation step.
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公开(公告)号：EP4246019A1
公开(公告)日：2023-09-20
申请号：EP21891724.3
申请日：2021-11-02
摘要： To alleviate stress exerted on a thread portion of a high pressure gas container including a metallic container to prevent fatigue fracture, there is provided a high pressure gas container comprising a metallic container, wherein the metallic container includes: a metallic cylinder; a female thread portion on an inner peripheral surface of the metallic cylinder at at least one end; and a lid having, on an outer peripheral surface, a male thread portion configured to screw into the female thread portion, and a maximum value of residual compressive stress at a position of 0.4 mm in a depth direction from a plurality of thread bottoms of the female thread portion and the male thread portion is 100 MPa or more, less than or equal to tensile strength of a material of the metallic cylinder, and less than or equal to tensile strength of a material of the lid.
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公开(公告)号：EP4063713A1
公开(公告)日：2022-09-28
申请号：EP20890317.9
申请日：2020-11-18
发明人： OKANO, Hiroshi , TAKAGI, Shusaku , ISHIKAWA, Nobuyuki , NAGAO, Akihide , MATSUBARA, Kazuki , TAKANO, Toshio , KADOTA, Kotaro , YAMAGUCHI, Norikazu , HASEGAWA, Takuya , KUNO, Hiroki
IPC分类号： F17C13/00
摘要： A hydrogen supply system is a system configured to supply hydrogen to a fuel-cell vehicle by using a curdle 4 for hydrogen transport and includes: a filling unit provided at a hydrogen filling facility and configured to fill the curdle 4 with hydrogen; a management unit configured to calculate a transport timing at which hydrogen-filled curdle 4 is transported to a business facility that operates the fuel-cell vehicle; a transport unit configured to transport hydrogen-filled curdle 4 to the business facility in accordance with the transport timing; and a disposition unit configured to dispose hydrogen-filled curdle 4 transported to the business facility at a place to which the fuel-cell vehicle is capable of accessing to have a refill of hydrogen in the business facility.
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公开(公告)号：EP4141294A1
公开(公告)日：2023-03-01
申请号：EP21793205.2
申请日：2021-04-19
摘要： A high-pressure hydrogen container is provided that has a simple configuration, requiring less labor for manufacture, achieving reduced manufacturing costs, and ensuring pressure resistance. The high-pressure hydrogen container includes a metal cylinder configured to store high-pressure hydrogen, a pair of lid parts configured to cover both end portions of the metal cylinder, and a plurality of fastening parts configured to fix the pair of lid parts in a state where the metal cylinder is clamped between the pair of lid parts.
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公开(公告)号：EP3865758A1
公开(公告)日：2021-08-18
申请号：EP19884261.9
申请日：2019-11-11
摘要： A high-pressure hydrogen tank includes a metal circular cylinder configured to store high-pressure hydrogen therein, a cap part configured to cover each of opposite end portions of the metal circular cylinder, an outer cylinder surrounding an outer periphery of a circular-cylindrical portion of the metal circular cylinder, and a fastening part configured to fix the cap part to the outer cylinder.
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10.发明公开STEEL MATERIAL FOR COMPOSITE PRESSURE VESSEL LINER, STEEL TUBING FOR COMPOSITE PRESSURE VESSEL LINER, AND METHOD FOR MANUFACTURING STEEL TUBING FOR COMPOSITE PRESSURE VESSEL LINER 审中-公开用于复合压力容器衬套的钢材，用于复合压力容器衬套的钢管以及用于制造用于复合压力容器衬套的钢管的方法
公开(公告)号：EP3272893A1
公开(公告)日：2018-01-24
申请号：EP16764427.7
申请日：2016-03-07
IPC分类号： C22C38/00 , C21D8/10 , C22C38/06 , C22C38/58 , F17C1/00 , C22C38/02 , C22C38/04 , C22C38/12 , C22C38/18 , C21D9/00
CPC分类号： C21D9/085 , C21D6/004 , C21D6/005 , C21D6/008 , C21D7/12 , C21D8/10 , C21D8/105 , C21D9/08 , C21D2211/002 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/18 , C22C38/22 , C22C38/38 , C22C38/44 , C22C38/58 , F17C1/00 , F17C2203/0604 , F17C2203/0639 , Y02E60/321
摘要： Steel material for composite pressure vessel liners that, when used as raw material for manufacturing a composite pressure vessel liner, yields a liner having sufficient strength and a high fatigue limit and enables the manufacture of an inexpensive composite pressure vessel is provided. Steel material for composite pressure vessel liners comprises: a chemical composition containing, in mass%, C: 0.10% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.1% to 5.0%, P: 0.0005% to 0.060%, S: 0.0001% to 0.010%, N: 0.0001% to 0.010%, and Al: 0.01% to 0.06%, with a balance being Fe and incidental impurities; and a metallic microstructure in which a mean grain size of prior austenite grains is 20 µm or less, and a total area ratio of martensite and lower bainite is 90% or more.
摘要翻译： 当用作制造复合压力容器衬里的原料时，用于复合压力容器衬里的钢材提供具有足够强度和高疲劳极限的衬里，并且能够制造廉价的复合压力容器。 复合压力容器衬里用钢材包含以质量％计含有C：0.10〜0.60％，Si：0.01〜2.0％，Mn：0.1〜5.0％，P：0.0005〜0.060％ S：0.0001〜0.010％，N：0.0001〜0.010％，Al：0.01〜0.06％，余量由Fe和不可避免的杂质构成。 以及旧奥氏体晶粒的平均粒径为20μm以下，且马氏体和下贝氏体的总面积率为90％以上的金属组织。
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