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公开(公告)号：SE361085B
公开(公告)日：1973-10-15
申请号：SE317071
申请日：1971-03-12
Applicant: ASEA AB
Inventor： LARKER H , LINDBERG M
Abstract: A vertical furnace for isostatic hot-pressing of powder bodies includes a cylindrical pressure chamber formed of a high pressure cylinder and end closures projecting into the cylinder. Insulation arranged in the chamber includes a cylindrical insulating wall and end insulation members. There is a seal between the upper end closure and the high pressure cylinder. In order to protect this seal against heat from the inside of the chamber, a heat resistant seal of a semi-porous material such as asbestos is arranged below the first seal in the space between the pressure cylinder and the upper end closure projecting into the cylinder.
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公开(公告)号：SE340605B
公开(公告)日：1971-11-29
申请号：SE717170
申请日：1970-05-26
Applicant: ASEA AB
Abstract: A press for hot hydrostatic extrusion of a billet, has a stand, a pressure chamber axially movable in the stand to engage a die mounted in one end against a die support carried by the stand, a punch slidable in the pressure chamber to raise a pressure medium in the pressure chamber to extrusion pressure, and a billet holder slidable in the chamber for pressing the billet against the die during sliding movement of the pressure chamber to closing position.
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公开(公告)号：SE8300645L
公开(公告)日：1984-08-09
申请号：SE8300645
申请日：1983-02-08
Applicant: ASEA AB
Inventor： ADLERBORN J , LARKER H , NILSSON J , MATTSSON B
IPC: B22F3/12 , B22F3/14 , B22F3/15 , C04B35/58 , C04B35/593 , C04B35/645 , C04B35/64 , B22F3/04
Abstract: An object is manufactured from a powdered material by isostatic pressing of a body, preformed from the powdered material, with a pressure medium, whereby the preformed body, in which at least the surface layer consists of a ceramic material in the form of a nitride, is surrounded by a casing which is rendered impenetrable to the pressure medium, before the isostatic pressing is carried out and the powder sintered. As the material in the casing there is used boron oxide or a glass containing boron oxide or a material forming glass while being heated, in which the content of boron oxide is sufficiently high for the glass-or the glass formed during heating-to be removable by water. The preformed body surrounded by the casing is subjected to a heat treatment for the formation of boron nitride on the surface of the preformed body, before the isostatic pressing is carried out. The casing is removed from the finished product by means of water or water vapor.
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公开(公告)号：SE426815B
公开(公告)日：1983-02-14
申请号：SE8101509
申请日：1981-03-10
Applicant: ASEA AB
Inventor： ADLERBORN J , LARKER H , MATTSSON B , NILSSON J
IPC: B22F3/12 , B22F5/04 , B22F7/06 , B28B1/00 , C04B35/593 , C04B35/645 , C04B37/00 , F01D5/28 , C04B35/58
Abstract: In the manufacture of an article of ceramic material, for example a bladed turbine wheel of silicon nitride, there is first formed a plurality of article parts, at least one of which is a shaped powder body formed from powder of ceramic material mixed with a plasticizer, after which the plasticizer is driven off by a suitable heating operation. The article parts are then assembled together into a configuration conforming to that of the article to be manufactured, and the assembled article parts are surrounded with a gas-impermeable layer, for example a layer of glass. Finally, the assembled parts are isostatically pressed at elevated temperature to form the assembled article parts into a dense, homogeneous article.
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Patent Agency Ranking
公开(公告)号：SE425707B
公开(公告)日：1982-10-25
申请号：SE8101778
申请日：1981-03-20
Applicant: ASEA AB
Abstract: Spent fuel rods from a nuclear reactor are enclosed in a body of copper, the fuel rods being embedded in copper powder in a copper container provided with a copper lid. The container with its contents and lid are then subjected to isostatic compression at a pressure and temperature sufficient to form a coherent dense mass unit of the powder, the container and the lid which embeds the fuel rods. The container can be enclosed in a sealed gas-tight capsule prior to the isostatic compression. A preliminary isostatic compression may be conducted at a lower temperature to effect creep deformation of the container, the lid and the powder.
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公开(公告)号：SE8101509L
公开(公告)日：1982-09-11
申请号：SE8101509
申请日：1981-03-10
Applicant: ASEA AB
Inventor： ADLERBORN J , LARKER H , MATTSSON B , NILSSON J
IPC: B22F3/12 , B22F5/04 , B22F7/06 , B28B1/00 , C04B35/593 , C04B35/645 , C04B37/00 , F01D5/28 , C04B35/58 , C04B35/64
Abstract: In the manufacture of an article of ceramic material, for example a bladed turbine wheel of silicon nitride, there is first formed a plurality of article parts, at least one of which is a shaped powder body formed from powder of ceramic material mixed with a plasticizer, after which the plasticizer is driven off by a suitable heating operation. The article parts are then assembled together into a configuration conforming to that of the article to be manufactured, and the assembled article parts are surrounded with a gas-impermeable layer, for example a layer of glass. Finally, the assembled parts are isostatically pressed at elevated temperature to form the assembled article parts into a dense, homogeneous article.
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公开(公告)号：SE8003699L
公开(公告)日：1981-11-20
申请号：SE8003699
申请日：1980-05-19
Applicant: ASEA AB
IPC: G21F9/36
Abstract: A container for enclosing particulate or piece-formed radioactive material which is to be converted into a solid body by isostatic pressing at a high temperature and a high pressure. The container may have a corrugated sheath and suitably a plane lid and a plane bottom. The corrugation makes possible axial compression of the container prior to the pressing. The container may also have a cylindrical sheath and bellows projecting into the sheath and joining the sheath of the container to a lid and a bottom. The bellows make it possible to insert the lid and the bottom by gas pressure, so that the material present in the container is axially compressed.
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公开(公告)号：SE8002365L
公开(公告)日：1981-09-28
申请号：SE8002365
申请日：1980-03-27
Applicant: ASEA AB
Inventor： LARKER H
IPC: H01L23/04 , H01L23/051 , H01L23/492 , H01L21/52 , 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.
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公开(公告)号：SE413400B
公开(公告)日：1980-05-27
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 , C01B21/068 , C04B35/58 , 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.
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