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    STEEL PRODUCT FOR STRUCTURAL MEMBER OF AUTOMOBILE AND METHOD FOR PRODUCTION THEREOF
    1.
    发明公开
    STEEL PRODUCT FOR STRUCTURAL MEMBER OF AUTOMOBILE AND METHOD FOR PRODUCTION THEREOF 有权
    钢铁产品用于生产汽车部件及其过程

    公开(公告)号：EP1693476A4

    公开(公告)日：2009-07-22

    申请号：EP04807135

    申请日：2004-12-09

    Applicant: JFE STEEL CORP ,  TOYOTA MOTOR CO LTD

    Inventor： TOYODA SHUNSUKE ,  SAKATA KEI ,  SATO AKIO ,  KANEKO KOUICHI ,  KAWAGUCHI HIROSHI

    IPC: C21D9/46 ,  C22C38/00 ,  C21D8/02 ,  C21D8/10 ,  C22C38/58

    CPC classification number: C22C38/02 ,  C21D8/0226 ,  C21D8/10 ,  C22C38/001 ,  C22C38/002 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

    Abstract: A method for producing a steel product which comprises providing a steel slab having a chemical composition satisfying C: 0.18 to 0.29 %, Si: 0.06 to 0.45 %, Mn: 0.91 to 1.85 %, P: 0.019 % or less, S: 0.0029% or less, sol.Al: 0.015 to 0.075%, N: 0.0049 % or less, O: 0.0049 % or less, B: 0.0001 to 0.0029 %, Nb: 0.001 to 0.019 %, Ti: 0.001 to 0.029 %, Cr: 0.001 to 0.195 %, Mo: 0.001 to 0.195 %, and 0.4 or more and less than 0.58 of Ceq, and satisfying that the sum (χ) of hardenability multiples according to Grossmann being aware of B is 1.2 or more and less than 1.7, heating the steel slab to 1160 to 1320˚C, subjecting the resultant slab to a hot finish rolling having an ending temperature for the finish rolling of 750 to 980˚C, annealing the rolled product for a period of 2s or more before winding, and then winding the product up at a temperature of 560 to 740˚C, to thereby produce a hot-rolled steel belt which has a structure having an average grain diameter (df) corresponding to a ferrite circle of 1.1 μm or more and less than 12 μm and a ferrite volume percentage (Vf) of 30 to 98 %. A steel pipe is produced by a method comprising using the above hot-rolled steel belt as a material and subjecting it to an electric welding wherein a reduction ratio for width is 8 % or less. A steel product produced by the above method is excellent in formability, fatigue strength after hardening, toughness at a low temperature, characteristics of resistance to delayed break and corrosion fatigue strength.

    ТЕПЛОИЗОЛИРОВАННАЯ МНОГОСЛОЙНАЯ ТРУБА ДЛЯ ПЕРЕДАЧИ ЭЛЕКТРОЭНЕРГИИ В УСЛОВИЯХ СВЕРХПРОВОДИМОСТИ И СПОСОБ ЕЕ УКЛАДКИ
    2.
    发明专利
    ТЕПЛОИЗОЛИРОВАННАЯ МНОГОСЛОЙНАЯ ТРУБА ДЛЯ ПЕРЕДАЧИ ЭЛЕКТРОЭНЕРГИИ В УСЛОВИЯХ СВЕРХПРОВОДИМОСТИ И СПОСОБ ЕЕ УКЛАДКИ 未知

    公开(公告)号：RU2719362C1

    公开(公告)日：2020-04-17

    申请号：RU2019140367

    申请日：2018-05-29

    Applicant: JFE STEEL CORP

    Inventor： ISHIGURO YASUHIDE ,  SATO AKIO ,  SAKASHITA SHIGETO

    IPC: H01B12/14 ,  H01L39/04

    Abstract: Теплоизолированнаямногослойнаятрубадляпередачиэлектроэнергиив условияхсверхпроводимостисодержит: сверхпроводящийкабель; многослойнуютрубу, котораясостоитизмножествапрямолинейныхтруби вкоторойпомещенсверхпроводящийкабель; имножествопрослоек, которыерасположенымеждудвумясмежнымипрямолинейнымитрубамиизмножествапрямолинейныхтруб, причемформасечениякаждойпрослойкиявляетсямногоугольником, имеющимтриилиболеевершин, каждаяпрослойкаимеетсквозноеотверстиев центрев плоскости, внутренняяпрямолинейнаятрубарасположенатакимобразом, чтоонапроходитчерезсквозноеотверстие, коэффициенттренияμмеждукаждойпрослойкойи внутреннейпрямолинейнойтрубойравен 0,1 илименее, коэффициенттренияμмеждукаждойпрослойкойи наружнойпрямолинейнойтрубойравен 0,1 илименее, иотношение L/d диагональнойэквивалентнойдлины Lмногоугольникак внутреннемудиаметру d наружнойпрямолинейнойтрубыиздвухсмежныхпрямолинейныхтрубравно 0,9 илименее. Теплоизолированнаямногослойнаятрубадляпередачиэлектроэнергиисогласноизобретениюв условияхсверхпроводимостиимеетпревосходныетеплоизоляционныесвойствапосравнениюс теплоизолированнымимногослойнымитрубами, содержащимигофрированныетрубыилигибкиетрубы. 2 н. и 4 з.п. ф-лы, 3 ил.

    STEEL FOR STRUCTURAL PART OF AUTOMOBILE AND METHOD FOR PRODUCING THE SAME
    4.
    发明专利
    STEEL FOR STRUCTURAL PART OF AUTOMOBILE AND METHOD FOR PRODUCING THE SAME 未知

    公开(公告)号：CA2548560C

    公开(公告)日：2012-06-26

    申请号：CA2548560

    申请日：2004-12-09

    Applicant: JFE STEEL CORP ,  TOYOTA MOTOR CO LTD

    Inventor： TOYODA SHUNSUKE ,  SAKATA KEI ,  SATO AKIO ,  KANEKO KOUICHI ,  KAWAGUCHI HIROSHI

    IPC: C21D9/46 ,  C22C38/00 ,  C21D8/02 ,  C21D8/10 ,  C22C38/58

    Abstract: The present invention provides a steel having excellent formability, fatigue endurance after quenching, low temperature toughness, resistance for hydrogen embrittlement, and corrosion fatigue endurance. Resolving means includes heating a steel slab at 1160°C to 1320°C, hot-finish-rolling the steel slab at a finisher delivery temperature of 750°C to 980°C, and then coiling the hot-rolled steel at a coiling temperature of 560°C to 740°C after slow cooling for a time of 2 seconds or more to produce a hot-rolled steel strip having a structure in which the ferrite grain diameter df corresponding to a circle is 1.1 m, to less than 1.2 µm and the ferrite volume fraction Vf is 30% to 98%, the steel slab containing 0.18 to 0.29% of C, 0.06 to 0.45% of Si, 0.91 to 1.85% of Mn, 0.019% or less of P, 0.0029% or less of S, 0.015 to 0.075% of sol. Al, 0.0049% or less of N, 0.0049% or less of 0, 0.0001 to 0.0029% of B, 0.001 to 0.019% of Nb, 0.001 to 0.029% of Ti, 0.001 to 0.195% of Cr, and 0.001 to 0.195% of Mo so that the carbon equivalent Ceq satisfies a value of 0.4 to less than 0.58, and the total x of multiplying factors including that for B according to Grossmann satisfies a value of 1.2 to less than 1.7. The hot-rolled steel strip is used as a raw material for producing a steel tube by electric resistance welded tube making with a width reduction of hoop of 8% or less.

    STEEL PRODUCT FOR STRUCTURAL MEMBER OF AUTOMOBILE AND METHODFOR PRODUCTION THEREOF
    5.
    发明专利
    STEEL PRODUCT FOR STRUCTURAL MEMBER OF AUTOMOBILE AND METHODFOR PRODUCTION THEREOF 未知

    公开(公告)号：CA2548560A1

    公开(公告)日：2005-06-23

    申请号：CA2548560

    申请日：2004-12-09

    Applicant: TOYOTA MOTOR CO LTD ,  JFE STEEL CORP

    Inventor： TOYODA SHUNSUKE ,  SAKATA KEI ,  SATO AKIO ,  KANEKO KOUICHI ,  KAWAGUCHI HIROSHI

    IPC: C21D9/46 ,  C22C38/00 ,  C21D8/02 ,  C21D8/10 ,  C22C38/58

    Abstract: A method for producing a steel product which comprises providing a steel sla b having a chemical composition satisfying C: 0.18 to 0.29 %, Si: 0.06 to 0.45 %, Mn: 0.91 to 1.85 %, P: 0.019 % or less, S: 0.0029% or less, sol.Al: 0.015 to 0.075%, N: 0.0049 % or less, O: 0.0049 % or less, B: 0.0001 to 0.0029 %, Nb: 0.001 to 0.019 %, Ti: 0.001 to 0.029 %, Cr: 0.001 to 0.195 %, Mo: 0.001 to 0.195 %, and 0.4 or more and less than 0.58 of Ceq, and satisfying that the sum (.chi.) of hardenability multiples according to Grossmann being aware of B is 1.2 or more and less than 1.7, heating the steel slab to 1160 to 1320~C, subjecting the resultant slab to a hot finish rolling having an ending temperature for the finish rolling of 750 to 980~C, annealing the rolled product for a period of 2s or more before winding, and then winding the product up at a temperature of 560 to 740~C, to thereby produce a hot-rolled steel belt which has a structure having an average grain diameter (df) corresponding to a ferrite circle of 1.1 .mu.m or more and less than 12 .mu. m and a ferrite volume percentage (Vf) of 30 to 98 %. A steel pipe is produced by a method comprising using the above hot-rolled steel belt as a material a nd subjecting it to an electric welding wherein a reduction ratio for width is 8 % or less. A steel product produced by the above method is excellent in formability, fatigue strength after hardening, toughness at a low temperatur e, characteristics of resistance to delayed break and corrosion fatigue strengt h.

    ТЕПЛОИЗОЛИРОВАННАЯ МНОГОСТЕННАЯ ТРУБА ДЛЯ СВЕРХПРОВОДЯЩЕЙ СИСТЕМЫ ПЕРЕДАЧИ ЭНЕРГИИ
    9.
    发明专利
    ТЕПЛОИЗОЛИРОВАННАЯ МНОГОСТЕННАЯ ТРУБА ДЛЯ СВЕРХПРОВОДЯЩЕЙ СИСТЕМЫ ПЕРЕДАЧИ ЭНЕРГИИ 未知

    公开(公告)号：RU2723290C1

    公开(公告)日：2020-06-09

    申请号：RU2019143596

    申请日：2018-05-29

    Applicant: JFE STEEL CORP

    Inventor： ISHIGURO YASUHIDE ,  SATO AKIO ,  SAKASHITA SHIGETO

    IPC: H01B12/14

    Abstract: Предлагаетсятеплоизолированнаямногостеннаятрубадлясверхпроводящейсистемыпередачиэнергии, Теплоизолированнаямногостеннаятрубадлясверхпроводящейсистемыпередачиэнергиивключаетсверхпроводящийкабельи многостеннуютрубу, котораявмещаетсверхпроводящийкабель, гдемногостеннаятрубаобразованаизмножествапрямыхтруб, и, поменьшеймере, однаизмножествапрямыхтрубимеетнасвоейповерхностислойпокрытия, содержащийпорошкообразныйметалл. Изобретениеобеспечиваетсозданиетрубы, котораяв высокойстепенипредотвращаетпритоквнешнеготепла, обусловленныйизлучением, идемонстрируетпревосходныехарактеристикитеплоизоляциибезиспользованиясверхизоляциии легкоможетбытьпроизведена. 3 з.п. ф-лы, 1 табл.

    HIGH-TENSILE STRENGTH WELDED STEEL TUBE FOR STRUCTURAL PARTSOF AUTOMOBILES AND METHOD OF PRODUCING THE SAME
    10.
    发明专利
    HIGH-TENSILE STRENGTH WELDED STEEL TUBE FOR STRUCTURAL PARTSOF AUTOMOBILES AND METHOD OF PRODUCING THE SAME 未知

    公开(公告)号：CA2656637A1

    公开(公告)日：2008-01-10

    申请号：CA2656637

    申请日：2007-06-19

    Applicant: JFE STEEL CORP

    Inventor： TOYODA SHUNSUKE ,  ARATANI MASATOSHI ,  KAWABATA YOSHIKAZU ,  HASHIMOTO YUJI ,  SAKATA KEI ,  SUZUKI KOJI ,  GUNJI MAKIO ,  SATO AKIO ,  SAWAKI TETSURO

    IPC: C22C38/00 ,  B21C37/08 ,  C21D8/02 ,  C21D8/10 ,  C22C38/14 ,  C22C38/58

    Abstract: A high-tension welded steel pipe for automotive structural members which has excellent formability and has excellent resistance to torsional fatigue after section forming and subsequent annealing for stress removal; and a pro cess for producing the steel pipe. A raw steel material having a composition which contains C, Si, and Al in amounts in respective proper ranges and fur ther contains 1.01-1.99% Mn, 0.041-0.150% Ti, and 0.017-0.150% Nb, provided that Ti+Nb is 0.08% or more, and in which the amounts of P, S, N, and O have been regulated so as to be not larger than given values is subjected to hot rolling in which the heating temperature and the finish-rolling completion temperature are in proper ranges. After completion of the hot rolling, the s teel material is annealed in a temperature range of 750-650°C for 2 seconds or longer. The steel is then wound at a winding temperature of 660-510°C to obtain a hot-rolled steel strip comprising at least 60 vol.% ferrite phase h aving an average particle diameter of 2-8 µm and a structure comprising an ( Nb/Ti) composite carbide having an average particle diameter of 2-40 nm and precipitated in the ferrite phase. This steel strip is subjected to the step of pipe formation by electric-resistance welding at a width reduction of 10 % or lower to thereby form a welded steel pipe.Thus, a high-tension welded s teel pipe is obtained which has a high yield strength exceeding 660 MPa and is excellent in low-temperature toughness, formability, and resistance to to rsional fatigue after annealing for stress removal.

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