中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.022 seconds)

    STRESS RELIEF OF SINGLE CRYSTAL SUPERALLOY ARTICLES
    3.
    发明专利
    STRESS RELIEF OF SINGLE CRYSTAL SUPERALLOY ARTICLES 未知

    公开(公告)号：DE3761024D1

    公开(公告)日：1989-12-28

    申请号：DE3761024

    申请日：1987-06-25

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HENRICKS ROBERT JACOBI ,  MARCIN JOHN JOSEPH ,  WAHL JACQUELINE BURNS ,  PINKOWISH ALEXANDER ALFONS

    IPC: C22F1/10 ,  C22F1/00 ,  C23F1/00 ,  C30B33/00 ,  F01D5/28 ,  F02C3/06 ,  C30B29/52

    Abstract: A coated nickel base superalloy single crystal turbine airfoil, blade (1), which is subject to gas turbine engine operation, can crack during refurbishment by a stress corrosion mechanism when exposed to certain corrosive media. The rapid thermal cycling that occurs during typical gas turbine engine operation results in high, non-uniform stresses across the airfoil, producing large localized residual strains in the article at ambient temperatures. Exposure to a corrosive environment, such as during coating removal or agressive cleaning, can produce chordwise cracks in a large number of the airfoils exposed. Such cracking is avoided by subjecting the articles to a preliminary stress relieving heat treatment which reduces the residual strains to a level below which cracking will not occur, prior to exposure to the corrosive media.

    STRESS RELIEF OF SINGLE CRYSTAL NICKEL BASE SUPERALLOY ARTICLES
    4.
    发明专利
    STRESS RELIEF OF SINGLE CRYSTAL NICKEL BASE SUPERALLOY ARTICLES 未知

    公开(公告)号：AU7498987A

    公开(公告)日：1988-01-07

    申请号：AU7498987

    申请日：1987-06-29

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HENRICKS ROBERT JACOBI ,  MARCIN JOHN JOSEPH ,  WAHL JACQUELINE BURNS ,  PINKOWISH ALEXANDER ALFONS

    IPC: C22F1/10 ,  C22F1/00 ,  C23F1/00 ,  C30B33/00 ,  F01D5/28 ,  F02C3/06 ,  C22F1/02

    Abstract: A coated nickel base superalloy single crystal turbine airfoil, blade (1), which is subject to gas turbine engine operation, can crack during refurbishment by a stress corrosion mechanism when exposed to certain corrosive media. The rapid thermal cycling that occurs during typical gas turbine engine operation results in high, non-uniform stresses across the airfoil, producing large localized residual strains in the article at ambient temperatures. Exposure to a corrosive environment, such as during coating removal or agressive cleaning, can produce chordwise cracks in a large number of the airfoils exposed. Such cracking is avoided by subjecting the articles to a preliminary stress relieving heat treatment which reduces the residual strains to a level below which cracking will not occur, prior to exposure to the corrosive media.

    5.
    发明专利
    未知

    公开(公告)号：MX168891B

    公开(公告)日：1993-06-14

    申请号：MX714687

    申请日：1987-06-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： PINKOWISH ALEXANDER ALFONS ,  HENRICKS ROBERT JACOBI ,  MARCIN JOHN JOSEPH ,  WAHL JACQUELINE BURNS

    IPC: C22F1/00 ,  C22F1/10 ,  C23F1/00 ,  C30B33/00 ,  F01D5/28 ,  F02C3/06

    Abstract: A coated nickel base superalloy single crystal turbine airfoil, blade (1), which is subject to gas turbine engine operation, can crack during refurbishment by a stress corrosion mechanism when exposed to certain corrosive media. The rapid thermal cycling that occurs during typical gas turbine engine operation results in high, non-uniform stresses across the airfoil, producing large localized residual strains in the article at ambient temperatures. Exposure to a corrosive environment, such as during coating removal or agressive cleaning, can produce chordwise cracks in a large number of the airfoils exposed. Such cracking is avoided by subjecting the articles to a preliminary stress relieving heat treatment which reduces the residual strains to a level below which cracking will not occur, prior to exposure to the corrosive media.

    STRESS RELIEF OF SINGLE CRYSTAL NICKEL BASE SUPERALLOY ARTICLES
    6.
    发明专利
    STRESS RELIEF OF SINGLE CRYSTAL NICKEL BASE SUPERALLOY ARTICLES 未知

    公开(公告)号：AU594478B2

    公开(公告)日：1990-03-08

    申请号：AU7498987

    申请日：1987-06-29

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HENRICKS ROBERT JACOBI ,  MARCIN JOHN JOSEPH ,  WAHL JACQUELINE BURNS ,  PINKOWISH ALEXANDER ALFONS

    IPC: C22F1/10 ,  C22F1/00 ,  C23F1/00 ,  C30B33/00 ,  F01D5/28 ,  F02C3/06 ,  C22F1/02

    Abstract: A coated nickel base superalloy single crystal turbine airfoil, blade (1), which is subject to gas turbine engine operation, can crack during refurbishment by a stress corrosion mechanism when exposed to certain corrosive media. The rapid thermal cycling that occurs during typical gas turbine engine operation results in high, non-uniform stresses across the airfoil, producing large localized residual strains in the article at ambient temperatures. Exposure to a corrosive environment, such as during coating removal or agressive cleaning, can produce chordwise cracks in a large number of the airfoils exposed. Such cracking is avoided by subjecting the articles to a preliminary stress relieving heat treatment which reduces the residual strains to a level below which cracking will not occur, prior to exposure to the corrosive media.

Patent Agency Ranking