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138 records (took 0.023 seconds)

    112.
    发明专利
    未知

    公开(公告)号：SE8003698A

    公开(公告)日：1981-11-20

    申请号：SE8003698

    申请日：1980-05-19

    Applicant: ASEA AB

    Inventor： LARKER H ,  TEGMAN R

    IPC: G21F9/36

    113.
    发明专利
    未知

    公开(公告)号：SE420964B

    公开(公告)日：1981-11-09

    申请号：SE8002365

    申请日：1980-03-27

    Applicant: ASEA AB

    Inventor： LARKER H

    IPC: H01L23/04 ,  H01L23/051 ,  H01L21/52 ,  H01L23/492 ,  H01L23/48 ,  H01L29/40

    Abstract: Composite material comprising a matrix of an alloy of about 64 percent by weight iron and about 36 percent by weight nickel or of a different alloy containing iron and nickel having a coefficient of thermal expansion of at the most 3.10-6K-1 within the temperature range 20 DEG C. to 100 DEG C. and veins of copper, distributed in one direction through the matrix, with the copper and the alloy metallurgically bonded to each other through a boundary layer containing copper and the alloy having a thickness of at the most 5 mu m.

    117.
    发明专利
    未知

    公开(公告)号：SE7809075L

    公开(公告)日：1980-03-01

    申请号：SE7809075

    申请日：1978-08-29

    Applicant: ASEA AB

    Inventor： ADLERBORN J ,  LARKER H ,  NILSSON J

    IPC: B22F3/12 ,  B22F3/14 ,  B22F3/15 ,  C04B35/593 ,  C04B35/645 ,  C04B35/58 ,  C01B21/068 ,  C04B35/64

    Abstract: Disclosed is an improved method for manufacturing an object of silicon nitride. In the method, a body preformed from silicon nitride powder and enclosed in a casing of glass is isostatically pressed with a gaseous pressure medium in a pressure vessel at a temperature required for sintering of silicon nitride. After pressing and sintering are completed, the pressure and the temperature in the pressure vessel are adjusted such that the temperature maintains the glass in a plastic state and the pressure in the pressure vessel is below the partial pressure of nitrogen gas for silicon nitride at that temperature so that the glass casing is blown up around the body and the body is freed from or can easily be freed from the glass casing.

    119.
    发明专利
    未知

    公开(公告)号：DK140047C

    公开(公告)日：1979-11-12

    申请号：DK203971

    申请日：1971-04-28

    Applicant: ASEA AB

    Inventor： NILSSON J ,  LARKER H

    IPC: B21C23/00

    Abstract: For hydrostatic extrusion, a press is provided having a yoke. One of the end pieces of the yoke carries a die receiving block having an extrusion passage therethrough. A pressure cylinder is mounted within the yoke for movement towards and from the die receiving block. Slidable in the cylinder of the high pressure cylinder is a billet holder which divides the space within the cylinder into two parts. The billet holder has a spring controlled valve which prevents passage of pressure fluid therethrough until a predetermined pressure differential exists between the chambers. A punch is provided for sliding into and out of the high pressure cylinder on the opposite side thereof from the die.

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