公开(公告)号：DE60224631T2

公开(公告)日：2008-12-24

申请号：DE60224631

申请日：2002-10-23

Applicant: UNITED TECHNOLOGIES CORP

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

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

Abstract: Concepts for fabricating improved cores for investment casting are described. The cores are composite and include refractory metal elements (200,202,204,206,208,210,212,214,216) and ceramic elements (120). The refractory metal elements are provided to enhance the mechanical properties of the core and/or to permit the fabrication of cores having shapes and geometries that could not otherwise be achieved. In one embodiment, the entire core may be made of refractory metal components. The cores may be used to investment cast gas turbine superalloy components.

公开(公告)号：DE69916983T2

公开(公告)日：2005-06-09

申请号：DE69916983

申请日：1999-12-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  GIUGNO RALPH ,  GUSTAFSON WALTER FREDERICK ,  MARCIN JOHN JOSEPH JR ,  SAMUELSON JEFFREY WILLIAM ,  NORTON DELWYN EARLE ,  NUNES JAY JOHN

IPC: C22C19/05 ,  B22D17/00 ,  B22D21/00 ,  C22C1/02 ,  C22C19/03 ,  C22C19/07 ,  C22F1/00 ,  C22F1/10 ,  C23C20060101 ,  F02C7/00

Abstract: A die cast article composed of nickel base superalloy IN 718 is disclosed. The microstructure is characterized by an absence of flowlines and includes a fine average grain size, e.g., ASTM 3 or smaller. A method of heat treating the articles is also disclosed. Exemplary articles include gas turbine engine components, such as blades, vanes, cases and seals.

公开(公告)号：ES2216453T3

公开(公告)日：2004-10-16

申请号：ES99310535

申请日：1999-12-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  GIUGNO RALPH ,  GUSTAFSON WALTER FREDERICK ,  MARCIN JOHN JOSEPH JR ,  SAMUELSON JEFFREY WILLIAM ,  NORTON DELWYN EARLE

IPC: C22C19/05 ,  B22D17/00 ,  B22D21/00 ,  C22C1/02 ,  C22C19/03 ,  C22C19/07 ,  C22F1/00 ,  C22F1/10 ,  C23C20060101 ,  F02C7/00

Abstract: A die cast article composed of nickel base superalloy IN 718 is disclosed. The microstructure is characterized by an absence of flowlines and includes a fine average grain size, e.g., ASTM 3 or smaller. A method of heat treating the articles is also disclosed. Exemplary articles include gas turbine engine components, such as blades, vanes, cases and seals.

公开(公告)号：DE69923930D1

公开(公告)日：2005-04-07

申请号：DE69923930

申请日：1999-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN J ,  MARCIN JOHN JOSEPH JR ,  ANDERSON DAVID WILLIAM ,  PRIVITZER EBERHART ,  SAMUELSON JEFFERY WILLIAM ,  TU JOHN SIUMING

IPC: B22D17/20

公开(公告)号：DE69916983D1

公开(公告)日：2004-06-09

申请号：DE69916983

申请日：1999-12-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  GIUGNO RALPH ,  GUSTAFSON WALTER FREDERICK ,  MARCIN JOHN JOSEPH JR ,  SAMUELSON JEFFREY WILLIAM ,  NORTON DELWYN EARLE ,  NUNES JAY JOHN

IPC: C22C19/05 ,  B22D17/00 ,  B22D21/00 ,  C22C1/02 ,  C22C19/03 ,  C22C19/07 ,  C22F1/00 ,  C22F1/10 ,  C23C20060101 ,  F02C7/00

Abstract: A die cast article composed of nickel base superalloy IN 718 is disclosed. The microstructure is characterized by an absence of flowlines and includes a fine average grain size, e.g., ASTM 3 or smaller. A method of heat treating the articles is also disclosed. Exemplary articles include gas turbine engine components, such as blades, vanes, cases and seals.

公开(公告)号：AT266103T

公开(公告)日：2004-05-15

申请号：AT99310535

申请日：1999-12-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  GIUGNO RALPH ,  GUSTAFSON WALTER FREDERICK ,  MARCIN JOHN JOSEPH JR ,  SAMUELSON JEFFREY WILLIAM ,  NORTON DELWYN EARLE ,  NUNES JAY JOHN

IPC: C22C19/05 ,  B22D17/00 ,  B22D21/00 ,  C22C1/02 ,  C22C19/03 ,  C22C19/07 ,  C22F1/00 ,  C22F1/10 ,  C23C20060101 ,  F02C7/00

Abstract: A die cast article composed of nickel base superalloy IN 718 is disclosed. The microstructure is characterized by an absence of flowlines and includes a fine average grain size, e.g., ASTM 3 or smaller. A method of heat treating the articles is also disclosed. Exemplary articles include gas turbine engine components, such as blades, vanes, cases and seals.

公开(公告)号：CA2408815A1

公开(公告)日：2003-04-24

申请号：CA2408815

申请日：2002-10-18

Applicant: UNITED TECHNOLOGIES CORP

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

IPC: B22C9/04 ,  B22C9/10 ,  B22C9/24 ,  B22C21/14 ,  B22D29/00 ,  B22C1/08

Abstract: Concepts for fabricating improved cores for investment casting are described. The cores are composite which include refractory metal elements (200) and ceramic elements (120). The refractory metal elements are provided to enhance the mechanical properties of the core and/or to permit the fabrication of cores having shapes and geometries that could not otherwise be achieved. In one embodiment, the entire core may be made of refractory metal components. The cores may be used to investment cast gas turbine superalloy components.

公开(公告)号：EP1152851A4

公开(公告)日：2004-03-31

申请号：EP99967586

申请日：1999-12-22

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN JOSEPH ,  ANDERSON DAVID WILLIAM ,  MARCIN JOHN JOSEPH JR ,  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 ,  B22D17/04

CPC classification number: B22D17/00 ,  B22D17/10 ,  B22D21/005 ,  B22D21/025

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.