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.

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.

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.

公开(公告)号：DE69936736T2

公开(公告)日：2008-04-30

申请号：DE69936736

申请日：1999-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  ANDERSON DAVID WILLIAM ,  MARCIN JOHN JOSEPH ,  SAMUELSON JEFFREY WILLIAM ,  TU JOHN SIUMING

IPC: B22D17/04 ,  F02C7/00 ,  B22C9/06 ,  B22C9/22 ,  B22D17/00 ,  B22D17/10 ,  B22D17/14 ,  B22D17/22 ,  B22D17/32 ,  B22D21/00 ,  B22D21/02 ,  B22D27/20 ,  B22D29/00 ,  C22C14/00 ,  C22C19/03 ,  C22C19/07 ,  F04D29/02 ,  F04D29/38

Abstract: A die casting machine (18) includes a melting unit (24), a horizontal shot sleeve (30) in fluid communication with die cavity (36) for receiving molten titanium from the melting unit (24), and a plunger (40) sealing and moveable engagement with the shot sleeve (30) for forcing molten material from the shot sleeve (30) into the die cavity (36). The melting unit (24), the shot sleeve (30) and the die cavity (36) are maintained in a non-reactive environment. The material is melted to a low superheat, e.g. less than about 200 DEG F/95 DEG C. Molten material is then transferred from the melting unit (24) to the shot sleeve (30) to fill not more than about one half of the shot sleeve volume. The molten material is injected from the sleeve (30) into the die cavity (36) using the plunger (40) for solidification in the die cavity (36). The resulting articles have a fine average grain microstructure and are characterized by an absence of flowlines.

公开(公告)号：AU2384700A

公开(公告)日：2000-07-12

申请号：AU2384700

申请日：1999-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  ANDERSON DAVID WILLIAM ,  MARCIN JOHN JOSEPH ,  SAMUELSON JEFFREY WILLIAM ,  TU JOHN SIUMING

IPC: F02C7/00 ,  B22C9/06 ,  B22C9/22 ,  B22D17/00 ,  B22D17/10 ,  B22D17/14 ,  B22D17/22 ,  B22D17/32 ,  B22D21/00 ,  B22D21/02 ,  B22D27/20 ,  B22D29/00 ,  C22C14/00 ,  C22C19/03 ,  C22C19/07 ,  F04D29/02 ,  F04D29/38 ,  B22D27/15

Abstract: A die casting machine (18) includes a melting unit (24), a horizontal shot sleeve (30) in fluid communication with die cavity (36) for receiving molten titanium from the melting unit (24), and a plunger (40) sealing and moveable engagement with the shot sleeve (30) for forcing molten material from the shot sleeve (30) into the die cavity (36). The melting unit (24), the shot sleeve (30) and the die cavity (36) are maintained in a non-reactive environment. The material is melted to a low superheat, e.g. less than about 200 DEG F/95 DEG C. Molten material is then transferred from the melting unit (24) to the shot sleeve (30) to fill not more than about one half of the shot sleeve volume. The molten material is injected from the sleeve (30) into the die cavity (36) using the plunger (40) for solidification in the die cavity (36). The resulting articles have a fine average grain microstructure and are characterized by an absence of flowlines.

公开(公告)号：PL3381585T3

公开(公告)日：2020-05-18

申请号：PL18163906

申请日：2018-03-26

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN JOSEPH ,  ZELESKY MARK F ,  WAGNER JOEL H ,  HALL THEODORE W ,  KRAUSE DAVID A ,  REINERT BEN S

IPC: B22C9/10 ,  B22C7/00 ,  B22F5/04 ,  B28B1/00 ,  B28B1/26 ,  B33Y80/00 ,  C22C1/04 ,  C23C4/00 ,  F01D5/18

公开(公告)号：SG11201406504XA

公开(公告)日：2014-11-27

申请号：SG11201406504X

申请日：2013-06-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHAH DILIP M ,  CHIN HERBERT A ,  MARCIN JOHN JOSEPH ,  REYNOLDS PAUL L ,  SUCIU GABRIEL L ,  GENEREUX PAUL D

IPC: F01D5/04 ,  C22C19/03 ,  F01D5/28

公开(公告)号：DE69936736D1

公开(公告)日：2007-09-13

申请号：DE69936736

申请日：1999-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  ANDERSON DAVID WILLIAM ,  MARCIN JOHN JOSEPH ,  SAMUELSON JEFFREY WILLIAM ,  TU JOHN SIUMING

IPC: B22D17/04 ,  F02C7/00 ,  B22C9/06 ,  B22C9/22 ,  B22D17/00 ,  B22D17/10 ,  B22D17/14 ,  B22D17/22 ,  B22D17/32 ,  B22D21/00 ,  B22D21/02 ,  B22D27/20 ,  B22D29/00 ,  C22C14/00 ,  C22C19/03 ,  C22C19/07 ,  F04D29/02 ,  F04D29/38

Abstract: A die casting machine (18) includes a melting unit (24), a horizontal shot sleeve (30) in fluid communication with die cavity (36) for receiving molten titanium from the melting unit (24), and a plunger (40) sealing and moveable engagement with the shot sleeve (30) for forcing molten material from the shot sleeve (30) into the die cavity (36). The melting unit (24), the shot sleeve (30) and the die cavity (36) are maintained in a non-reactive environment. The material is melted to a low superheat, e.g. less than about 200 DEG F/95 DEG C. Molten material is then transferred from the melting unit (24) to the shot sleeve (30) to fill not more than about one half of the shot sleeve volume. The molten material is injected from the sleeve (30) into the die cavity (36) using the plunger (40) for solidification in the die cavity (36). The resulting articles have a fine average grain microstructure and are characterized by an absence of flowlines.

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.

公开(公告)号：EP2890871A4

公开(公告)日：2015-09-09

申请号：EP13832481

申请日：2013-06-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHAH DILIP M ,  CHIN HERBERT A ,  MARCIN JOHN JOSEPH ,  REYNOLDS PAUL L ,  SUCIU GABRIEL L ,  GENEREUX PAUL D

IPC: F01D5/04 ,  C22C19/03 ,  F01D5/28

CPC classification number: C21D9/085 ,  B22D27/045 ,  C21D1/26 ,  C21D8/105 ,  C22C19/03 ,  C22C19/056 ,  C22C38/00 ,  C22F1/10 ,  C30B29/52 ,  C30B33/02 ,  F01D5/02 ,  F05D2220/323 ,  F05D2230/40 ,  F05D2240/60 ,  F05D2300/171 ,  F05D2300/501 ,  F05D2300/606 ,  Y02T50/672

Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.