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    12.
    发明专利
    未知

    公开(公告)号：BR8003161A

    公开(公告)日：1982-01-19

    申请号：BR8003161

    申请日：1980-05-20

    Applicant: UNITED TECHNOLOGIES CORP

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

    IPC: B23K15/08 ,  B23K17/00 ,  B23K26/18 ,  B23K26/38 ,  B23K15/00

    Abstract: A support for a workpiece, in which a hole is to be machined by an energy beam, consists of grains (or particles) binded together by a binder which is evaporated by the beam and partially transforms into a liquid after machining. The grains absorb heat and vapours when contacted by the beam. The compsn. of the support is chosen to ensure absorption of the beam and creation of an amt. of gas sufficient to expel molten metal from the hole and reduce formation of burrs and resolidified layers in the hole. The support is useful in the electron beam machining of holes, slots, etc. in (non)metallic workpieces, e.g. to form a hole in one wall of a hollow gas turbine engine blade.

    13.
    发明专利
    未知

    公开(公告)号：DE2910732A1

    公开(公告)日：1979-09-27

    申请号：DE2910732

    申请日：1979-03-19

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HOWARD CURTISS GILMORE ,  JORDAN LESTER WARREN ,  YAWORSKY CHESTER EDWIN

    IPC: B23K15/08 ,  B23K26/18 ,  B23K15/00

    Abstract: Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hole from hot molten spatter which is ejected from the entrance to the hole during the drilling operation. A preferred stop-off material is a substantially continuous layer of boron nitride on the first penetrated surface of the workpiece.

    15.
    发明专利
    未知

    公开(公告)号：DK152096C

    公开(公告)日：1988-07-04

    申请号：DK121379

    申请日：1979-03-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HOWARD CURTISS GILMORE ,  JORDAN LESTER WARREN ,  YAWORSKY CHESTER EDWIN

    IPC: B23K15/08 ,  B23K26/18 ,  B23K15/00

    Abstract: Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hole from hot molten spatter which is ejected from the entrance to the hole during the drilling operation. A preferred stop-off material is a substantially continuous layer of boron nitride on the first penetrated surface of the workpiece.

    16.
    发明专利
    未知

    公开(公告)号：DK152096B

    公开(公告)日：1988-02-01

    申请号：DK121379

    申请日：1979-03-23

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HOWARD CURTISS GILMORE ,  JORDAN LESTER WARREN ,  YAWORSKY CHESTER EDWIN

    IPC: B23K15/08 ,  B23K26/18 ,  B23K15/00

    Abstract: Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hole from hot molten spatter which is ejected from the entrance to the hole during the drilling operation. A preferred stop-off material is a substantially continuous layer of boron nitride on the first penetrated surface of the workpiece.

    LEACHABLE BACKER FOR ELECTRON BEAM HOLE DRILLING
    18.
    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

    20.
    发明专利
    未知

    公开(公告)号：FR2420392A1

    公开(公告)日：1979-10-19

    申请号：FR7906826

    申请日：1979-03-19

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： HOWARD CURTISS GILMORE ,  JORDAN LESTER WARREN ,  YAWORSKY CHESTER EDWIN

    IPC: B23K15/08 ,  B23K26/18 ,  B23K15/00 ,  B23K35/36

    Abstract: Disclosed is an electron beam drilling process in which the workpiece surface first penetrated by the beam is coated with a stop-off material having the required high temperature resistance for preventing formation of burrs around the perimeter of the hole from hot molten spatter which is ejected from the entrance to the hole during the drilling operation. A preferred stop-off material is a substantially continuous layer of boron nitride on the first penetrated surface of the workpiece.

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