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    RAW PIPE OF Fe-Ni ALLOY AND METHOD FOR PRODUCTION THEREOF
    2.
    发明公开
    RAW PIPE OF Fe-Ni ALLOY AND METHOD FOR PRODUCTION THEREOF 有权
    管，从EAR Fe-Ni合金及工艺用于生产

    公开(公告)号：EP1777314A4

    公开(公告)日：2008-01-09

    申请号：EP05755195

    申请日：2005-06-29

    Applicant: SUMITOMO METAL IND

    Inventor： IGARASHI MASAAKI ,  SHIMODA KAZUHIRO ,  YAMAKAWA TOMIO ,  AMAYA HISASHI

    IPC: C22C38/00 ,  B21B19/04 ,  C21D8/10 ,  C22C19/05 ,  C22C38/58 ,  C22F1/10

    CPC classification number: C22F1/10 ,  B21B23/00 ,  C21D8/10 ,  C22C19/055 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

    Abstract: A raw pipe made of an Fe-Ni alloy, which has a chemical composition that C: 0.04 % or less, Si: 0.50 % or less, Mn: 0.01 to 6.0 %, P: 0.03 % or less, S: 0.01 % or less, Cr: 20 to 30 %, Ni: 30 to 45 %, Mo: 0 to 10 %, W: 0 to 20 %, Cu: 0.01 to 1.5 %, Al: 0.01 % or less, N: 0.0005 to 0.20 % and the balance: substantially Fe, with the proviso that Mo(%) + 0.5W(%) is more than 1.5 % and not more than 10 %, wherein 1440 - 6000P - 100S - 2000C = 1300, Ni + 10(Mo + 0.5W) + 100N = 120, (Ni - 35) + 10(N - 0.1) - 2(Cr -25) - 5(Mo + 0.5W - 3) + 8 = 0 are satisfied. The above raw pipe made of the Fe-Ni alloy is excellent in the property of the inner surface thereof and thus can be finished into a seamless pipe by the use of Mannesman piercer, and the resultant seamless pipe has excellent mechanical properties and also excellent in the corrosion resistance under a sour gas circumstance. Accordingly, the above raw pipe made of the Fe-Ni alloy can be utilized as a raw pipe for an oil well pipe and a line pipe, and further as a raw pipe for various structural members in a nuclear power plant and a chemical industry plant.

    BORING MACHINE, PLUG, AND METHOD OF MANUFACTURING SEAMLESS STEEL TUBE
    6.
    发明公开
    BORING MACHINE, PLUG, AND METHOD OF MANUFACTURING SEAMLESS STEEL TUBE 有权
    钻头，插塞和制造无缝钢管方法

    公开(公告)号：EP1908533A4

    公开(公告)日：2009-08-19

    申请号：EP06766673

    申请日：2006-06-14

    Applicant: SUMITOMO METAL IND

    Inventor： SHIMODA KAZUHIRO ,  YAMAKAWA TOMIO

    IPC: B21B25/00 ,  B21B19/04 ,  B21B25/04

    CPC classification number: B21B25/04 ,  B21B19/04

    Abstract: A plug (2) used for a boring machine, comprises a tip part (23), a cylindrical part (24), a body part (25), a core joining part (22), and a jetting hole (21). The jetting hole (21) is passed through from the surface of the cylindrical part (24) to the surface of the core joining part (22), and jets a lubricant fed from the outside thereto. A bored material forms a clearance from the cylindrical part (24). Since the jetting hole (21) is formed in the cylindrical part (24), the material during boring is not brought into contact with the jetting hole (21). Accordingly, scores resulting from the contact of the material on the jetting hole (21) can be prevented from occurring on the inner surface of the material.

    Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF
    7.
    发明公开
    Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF 有权
    PIPE镍基合金材料及其制造方法

    公开(公告)号：EP1777313A4

    公开(公告)日：2009-06-03

    申请号：EP05755622

    申请日：2005-06-29

    Applicant: SUMITOMO METAL IND

    Inventor： IGARASHI MASAAKI ,  SHIMODA KAZUHIRO ,  YAMAKAWA TOMIO ,  AMAYA HISASHI

    IPC: C22C19/05 ,  B21B19/04 ,  C22F1/10

    CPC classification number: B21B19/04 ,  B21B23/00 ,  C22C19/053 ,  C22C19/055 ,  C22C19/056 ,  C22F1/10

    Abstract: A nickel base alloy material tube which has a chemical composition that C = 0.04 %, Si = 0.50 %, Mn: 0.01 to 6.0 %, P = 0.03 %, S = 0.01 %, Cr: 15 to 30 %, Ni: more than 45 % and not more than 60 %, Mo: 0 to 18 %, W: 0 to 36 %, with the proviso that Mo (%) + 0.5W (%): more than 1.5 % and not more than 18 %, Cu: 0.01 to 1.5 %, Al = 0.01 %, N: 0.0005 to 0.20 %, and the balance: substantially Fe, wherein 1380 - 5000P - 100S - 4400C = 1300, Ni + 10(Mo + 0.5W) + 100N = 200, and (Ni - 50) + 10(N - 0.1) -2(Cr -25) - 5(Mo + 0.5W - 6) + 12 = 0 are satisfied. The above nickel base alloy material tube has excellent inner surface characteristics being sufficient to be finished into a seamless pipe by the use of Mannesman piercer. The resultant seamless pipe has an excellent mechanical properties and also excellent in the corrosion resistance under the sour gas environment, and thus, the above nickel base alloy material tube can be utilized as a material tube for an oil well pipe and a line pipe and further a material tube for various structural members in a nuclear power plant and a chemical plant.

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