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    CORE FOR PRECISE INVESTMENT CASTING
    1.
    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

    DEVICE FOR DIE CASTING MATERIAL HAVING HIGH MELTING TEMPERATURE
    3.
    发明专利
    DEVICE FOR DIE CASTING MATERIAL HAVING HIGH MELTING TEMPERATURE 失效

    公开(公告)号：JP2000197957A

    公开(公告)日：2000-07-18

    申请号：JP36051899

    申请日：1999-12-20

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: B22D17/20

    Abstract: PROBLEM TO BE SOLVED: To execute die casting a member having high m.p. in a good condition by selecting the ratio of the inside diameter and the outside diameter of a sleeve so as to minimize the thermal deformation of the sleeve in the case of pouring molten material into the shot sleeve. SOLUTION: The cylindrical sleeve has the inside diameter Ri and the outside diameter Ro in the cold state, and as the molten material is poured into a low portion, the low portion is expanded more than the portion at the upper side and deformed as shown with the broken line to form an elliptic shape shown with a major axis Ma and a minor axis Mm. In such a case, the ratio (Ro/Ri) of the outside diameter and the inside diameter is desirable to be at least 1.5. In this way, the molten material having suitable volume, (particularly, in the case of filling only a small portion of the molten material), is formed as bow shape in the longitudinal direction or formed as the elliptic shape, and it can be sufficiently minimized that the sleeve is thermally deformed and the machine can be prevented from jamming. further, the inside diameter is desirable to be at least 1.5 inch.

    APARATO DE FUNDICION A PRESION PARA MATERIAL DE ALTA TEMPERATURA DE FUSION.
    5.
    发明专利
    APARATO DE FUNDICION A PRESION PARA MATERIAL DE ALTA TEMPERATURA DE FUSION. 未知

    公开(公告)号：ES2235445T3

    公开(公告)日：2005-07-01

    申请号：ES99310240

    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

    Abstract: Un aparato de fundición a presión para fabricar objetos compuestos de un material que tiene una temperatura de fusión por encima de 1093ºC o más particularmente por encima de 1649ºC, comprendiendo el aparato: - una unidad (24) de fusión para fusión de al menos una carga única del material; - un troquel (36) de piezas múltiples, que define la cavidad del troquel ; - un manguito de disparo (30) generalmente cilíndrico, en comunicación de fluido con el troquel (36) y para recibir material fundido de la unidad (24) de fusión, teniendo el manguito radios interno (Ri) y externo (Ro); y - una unidad (40) de pistón en acoplamiento móvil y de cierre hermético con el manguito de disparo (30) a lo largo de una carrera del pistón para forzar el material desde el manguito de disparo (30) dentro de la cavidad (36) del troquel; caracterizado porque el aparato comprende además: - el medio (22) para proporcionar un entorno de presión reducida para la unidad (24) de fusión, el troquel (36) y el manguito de disparo (30); y porque - el radio (Ri) interno del manguito tiene al menos 25mm; y - la relación (Ro/Ri) es al menos 1,25.

    8.
    发明专利
    未知

    公开(公告)号：DE60224631D1

    公开(公告)日：2008-03-06

    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.

    9.
    发明专利
    未知

    公开(公告)号：AT383918T

    公开(公告)日：2008-02-15

    申请号：AT02257358

    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.

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