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    2.
    发明专利
    未知

    公开(公告)号：FR2562827A1

    公开(公告)日：1985-10-18

    申请号：FR8503732

    申请日：1985-03-14

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： JORDAN LESTER W ,  LOERSCH JOSEPH F ,  ADINOLFI ROBERT G

    IPC: B23K15/00 ,  C09K3/00 ,  B23K37/06 ,  B23K35/38

    Abstract: By coating a workpiece with a uniform layer of polyimide containing surfactant upon the nonweld areas, spatter produced in electron beam welding of the workpiece is prevented from adhering to the workpiece surface in the nonweld areas. The polyimide coating is so constituted as to be adherent, heat stable, acid resistant, and chemically removeable. Silicone surfactant is preferred.

    LEACHABLE BACKER FOR ELECTRON BEAM HOLE DRILLING
    3.
    发明专利
    LEACHABLE BACKER FOR ELECTRON BEAM HOLE DRILLING 未知

    公开(公告)号：CA1145415A

    公开(公告)日：1983-04-26

    申请号：CA353220

    申请日：1980-06-02

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HOWARD CURTISS GILMORE ,  JORDAN LESTER W ,  YAWORSKY CHESTER E

    IPC: B23K15/00 ,  H01J37/30

    Abstract: BACKER FOR ELECTRON BEAM HOLE DRILLING Disclosed is an electron beam hole drilling process in which the workpiece surface where the hole exits is covered with a backer comprising particulate bonded to itself and the exit surface by a binding agent. The backer enables a hole having substantial uniform symmetry along its length to be drilled and is particularly useful for hollow parts and contoured surfaces. Backers removable by liquifying, melting, dissolution, leaching and the like, are particularly useful for inaccessible exit surfaces. In a preferred embodiment the backer is comprised of a nonmetallic particulate such as glass while the binder is a soluble silicate. EH-6196A

    4.
    发明专利
    未知

    公开(公告)号：DE3509475A1

    公开(公告)日：1985-10-24

    申请号：DE3509475

    申请日：1985-03-15

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： JORDAN LESTER W ,  LOERSCH JOSEPH F ,  ADINOLFI ROBERT G

    IPC: C09K3/00 ,  B23K15/00

    Abstract: By coating a workpiece with a uniform layer of polyimide containing surfactant upon the nonweld areas, spatter produced in electron beam welding of the workpiece is prevented from adhering to the workpiece surface in the nonweld areas. The polyimide coating is so constituted as to be adherent, heat stable, acid resistant, and chemically removeable. Silicone surfactant is preferred.

    VITREOUS-METALLIC CONTAINER FOR HOT ISOSTATIC COMPACTION
    5.
    发明专利
    VITREOUS-METALLIC CONTAINER FOR HOT ISOSTATIC COMPACTION 未知

    公开(公告)号：CA1057485A

    公开(公告)日：1979-07-03

    申请号：CA267222

    申请日：1976-12-06

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： LOERSCH JOSEPH F ,  HURWITZ PETER A ,  JORDAN LESTER W

    IPC: F01D5/28 ,  B22F3/12 ,  B22F3/14 ,  B22F3/15 ,  B30B11/00 ,  B22F7/04

    Abstract: This invention involves a method of making a gasimpervious container for the hot isostatic compaction of particulate material into an article of intricate configuration. It comprises providing a removable pattern in the appropriate precompaction configuration of the article to be produced, forming a shell of vitreous frit on the pattern, heating the shell to effect vitrification thereof, and coating the vitreous shell with a layer of metallic material to form a gas-impervious metallic shell around the vitreous shell. The pattern may be removed at any time after formation of the shell of vitreous frit. The gas-impervious container thus produced is well-suited for use in hot isostatic compaction processes wherein dense articles of complex shape, such as gas turbine engine components, are produced from superalloy powders.

    6.
    发明专利
    未知

    公开(公告)号：FR2562827B1

    公开(公告)日：1988-02-19

    申请号：FR8503732

    申请日：1985-03-14

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： JORDAN LESTER W ,  LOERSCH JOSEPH F ,  ADINOLFI ROBERT G

    IPC: B23K15/00 ,  C09K3/00 ,  B23K37/06 ,  B23K35/38

    Abstract: By coating a workpiece with a uniform layer of polyimide containing surfactant upon the nonweld areas, spatter produced in electron beam welding of the workpiece is prevented from adhering to the workpiece surface in the nonweld areas. The polyimide coating is so constituted as to be adherent, heat stable, acid resistant, and chemically removeable. Silicone surfactant is preferred.

    METHOD OF HOT ISOSTATIC COMPACTION
    8.
    发明专利
    METHOD OF HOT ISOSTATIC COMPACTION 未知

    公开(公告)号：CA1093268A

    公开(公告)日：1981-01-13

    申请号：CA265018

    申请日：1976-11-05

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： LOERSCH JOSEPH F ,  HURWITZ PETER A ,  JORDAN LESTER W

    IPC: B22F3/12 ,  B22F3/15 ,  B22F5/04 ,  B22F3/04

    Abstract: This invention involves a method for the hoe isostatic compaction of particulate material into an article of intricate configuration. It comprises providing a removable pattern in the appropriate precompaction configuration of the article to be produced, coating the pattern with a first layer of conductive material and a second layer of metallic material, the two layers cooperating to provide a self-supporting and gas-impervious shell around the pattern and removing the pattern from the shell to provide a self-supporting and gas-impervious container having an internal configuration corresponding to the precompaction shape of the article to be produced. The container is then filled with particulate material, evacuated ant sealed, and isostatically compacted in a pressure vessel at elevated temperature until the particulate material is compacted into a dense article of complex shape. The container is thereafter removed to obtain the compacted article. Dense articles of complex shape, such as gas turbine engine components including blades, discs and the like, are readily produced by the method of the invention.

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