中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

62 records (took 0.038 seconds)

    METHOD OF IMPROVING DURABILITY OF TURBINE BLADE
    1.
    发明专利
    METHOD OF IMPROVING DURABILITY OF TURBINE BLADE 失效

    公开(公告)号：JP2002180231A

    公开(公告)日：2002-06-26

    申请号：JP2000386525

    申请日：2000-12-20

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ALLEN WILLIAM PATRICK ,  OLSON WALTER E ,  SHAH DILIP M ,  CETEL ALAN DAVID

    IPC: F01D5/28 ,  B05B7/16 ,  B05D3/10 ,  B05D5/00 ,  B05D7/14 ,  B05D7/24 ,  C22C19/05 ,  C23C4/02 ,  C23C4/08 ,  C23C4/10

    Abstract: PROBLEM TO BE SOLVED: To improve the durability of a structural element by applying a rust preventing paint on a part of a turbine blade, which is not coated previously and not exposed to a high temperature gas stream. SOLUTION: An article to be exposed to a high temperature, for example, >=1000 deg.C during operating is disclosed. In an embodiment, a method for the gas turbine engine includes a directionally crystallized metallic base, for example a superalloy demarcating a blade profile, a blade root and a pedestal arranged between the blade profile and the blade root. The pedestal has an under side adjacent to the root and a corrosion resistant lining coating material such as MCrAlY, an aluminized compound containing a noble metal or a corrosion resistant ceramic is arranged on a part of the blade, for example, the under side of the pedestal and a neck part, where is not coated with the coating material. The applied coating material prevents the corrosion and the stress corrosion cracking of the blade in the region. A coating material for the blade profile coated with the coating material can have a composition different from the coating material applied on the pedestal under surface.

    DIRECTIONALLY SOLIDIFIED ARTICLES AND NICKEL BASE SUPERALLOY
    2.
    发明专利
    DIRECTIONALLY SOLIDIFIED ARTICLES AND NICKEL BASE SUPERALLOY 审中-公开

    公开(公告)号：JP2003231933A

    公开(公告)日：2003-08-19

    申请号：JP2002366323

    申请日：2002-12-18

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ALAN D SETEL ,  SHAH DILIP M

    IPC: F02C7/00 ,  C22C19/05

    Abstract: PROBLEM TO BE SOLVED: To provide a material for manufacturing articles consisting of columnar crystals, and the above articles having an adequate strength and at least equivalent oxidation resistance and corrosion resistance, compared to the corresponding article consisting of a single crystal. SOLUTION: Corrosion and oxidation resistant, high strength, directionally solidified superalloy alloys and articles are described. The articles have a nominal composition in weight percent of about 12% Cr, 9% Co, 1.9% Mo, 3.8% W, 5% Ta, 3.6% Al, 4.1% Ti, 0.015% B, 0.1% C, up to about 0.02% Zr, balance essentially nickel, and include no intentional additions of hafnium or zirconium, and also have a small amounts of tantalum carbide. The resultant articles have good hot corrosion resistance and superior oxidation resistance and creep properties. COPYRIGHT: (C)2003,JPO

    INDENTING TOOL
    3.
    发明专利
    INDENTING TOOL 审中-公开

    公开(公告)号：JP2003205479A

    公开(公告)日：2003-07-22

    申请号：JP2002380948

    申请日：2002-12-27

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： CLEMENS READE ,  SHAH DILIP M ,  ROE DAVID LEE

    IPC: B25H7/04 ,  B44B3/06

    Abstract: PROBLEM TO BE SOLVED: To provide a diamond-tipped indenting tool with improved wear resistance. SOLUTION: The diamond-tipped indenting tool for marking a surface of a metal part is composed of a shank part 12 having a tip 14, and a diamond 16 attached to the tip 14 by a brazing material 18. Preferably, the brazing material 18 comprises a brazing alloy with favorable wettability to the diamond 16 and a material forming the shank part 12. The diamond 16 forms a point 22 of the tool. Preferably, the diamond 16 is a high quality single crystal diamond. COPYRIGHT: (C)2003,JPO

    TURBINE BLADE FOR GAS TURBINE ENGINE
    4.
    发明专利
    TURBINE BLADE FOR GAS TURBINE ENGINE 失效

    公开(公告)号：JP2001234322A

    公开(公告)日：2001-08-31

    申请号：JP2000386526

    申请日：2000-12-20

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： ALLEN WILLIAM PATRICK ,  OLSON WALTER E ,  SHAH DILIP M ,  CETEL ALAN DAVID

    IPC: C22C19/00 ,  C23C4/00 ,  C23C4/08 ,  C23C30/00 ,  F01D5/28

    Abstract: PROBLEM TO BE SOLVED: To coat the part of a turbine blade, which is not directly exposed to a high temperature gas flow, with a rust preventive paint for improving the durability of its components. SOLUTION: In this invention, e.g. an article to be exposed to a high temperature of >=1,000 deg.C in the process of its operation is disclosed. In one embodiment, the turbine blade for a gas turbine engine contains a directionally crystallized metallic base, e.g. a superalloy demarcating a profile, a root and a stand arranged between the blade and the root. The stand has a lower side adjacent to the root, and a corrosion resistant lining coating material such as MCrAlY is arranged at the lower side and the cervical part of the stand. The applied coating material prevents the corrosion and stress corrosion cracking of the blade in those regions. Moreover, in the place to be coated with the profile, the coating material for the profile may have a composition different from that of the coating material for the lower face of the stand.

    CORE FOR PRECISE INVESTMENT CASTING
    6.
    发明专利
    CORE FOR PRECISE INVESTMENT CASTING 审中-公开

    公开(公告)号：JP2003181599A

    公开(公告)日：2003-07-02

    申请号：JP2002309155

    申请日：2002-10-24

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SHAH DILIP M ,  THOMPSON BEALS JAMES ,  MARCIN JOHN JOSEPH JR ,  MURRAY STEPHEN DOUGLAS

    IPC: B22C9/04 ,  B22C9/10 ,  B22C9/24 ,  B22C21/14 ,  B22D29/00

    Abstract: PROBLEM TO BE SOLVED: To provide a core for investment casting capable of manufacturing the core thinner than a present ceramic core and having improved mechanical characteristics. SOLUTION: The core is a composite article including a heat resistant metal element and a ceramic element. The heat resistant metal element is provided so as to improve the mechanical characteristics of the core or to allow the core having a shape and a shape dimension which cannot be obtained by the other method. In one embodiment, the overall core can be formed of the heat resistant metal constituting element. The core can be used for investment-casting a gas turbine superhard alloy constituting element. COPYRIGHT: (C)2003,JPO

    TURBINE BLADE AND GAS TURBINE MEMBER
    8.
    发明专利
    TURBINE BLADE AND GAS TURBINE MEMBER 失效

    公开(公告)号：JP2001226758A

    公开(公告)日：2001-08-21

    申请号：JP2000386527

    申请日：2000-12-20

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： SHAH DILIP M ,  CETEL ALAN DAVID

    IPC: C23C4/00 ,  C23C4/02 ,  C23C4/10 ,  C23C30/00 ,  F01D5/28

    Abstract: PROBLEM TO BE SOLVED: To provide corrosion resistant coating for preventing corrosion in the part of a member free from direct exposure to a hot gas flow. SOLUTION: Corrosion resistant overlay coating of stabilized zirconia, etc., is applied to an undersurface (18) of a platform (16) and a neck part (19) of a blade (10), desirably by plasma spraying. Owing to this coating, the corrosion of the blade, caused by the salt depositing on the blade part which is shielded and free from direct exposure to a gas passage, such as the undersurface (18) of the platform (16), can be prevented and the life of the member can be prolonged. Another advantage of this coating is that the stress corrosion cracking of the blade can be prevented. This corrosion resistant overlay coating functions as a barrier between the salt and the member composed of nickel-base alloy member under it and prevents corrosion and stress corrosion cracking.

Patent Agency Ranking