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1.发明授权Pressure chamber for treating material with high pressure,such as isostatic compression of powder bodies 失效用于高压处理材料的压力室，如等离子体压缩粉末体
公开(公告)号：US3613157A
公开(公告)日：1971-10-19
申请号：US3613157D
申请日：1969-03-10
Applicant: ASEA AB
Inventor： LANDA TORSTEIN , SYVAKARI PERTI , WESTMAN ERIK
CPC classification number: B30B11/001 , B01J3/048 , B22F3/04 , B30B11/002 , Y10S264/50
Abstract: A PRESSURE CHAMBER FOR THE ISOSTATIC COMPRESSION OF POWDER BODIES INCLUDES A HIGH PRESSURE CYLINDER WITH END CLOSURES PROJECTING INTO THE CYLINDER. THERE ARE TWO ARRANGEMENTS FOR SUPPLY PRESSURE MEDIA. ONE OF THE END CLOSURES IS A UNIT SURROUNDED BY THE PRESSURE MEDIUM WHICH OPERATES ON THE WORKPIECE, THIS UNIT PROJECTING INTO THE CYLINDER AND HAVING A DISPLACEABLE WALL WHICH SEPARATES THE TWO PRESSURE MEDIA.
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公开(公告)号：DE3019047A1
公开(公告)日：1980-12-18
申请号：DE3019047
申请日：1980-05-19
Applicant: ASEA AB
Inventor： BRUNOSSON GUNNAR , LARSSON HANS-GUNNAR , WESTMAN ERIK
Abstract: Apparatus for manufacturing powder, especially metallic powder, by a melt atomization process, comprises a closed container in which a jet of gas is directed transversely into a stream of the melt and breaks it down into droplets which rapidly solidify and are thrown in a parabolic trajectory to the lower part of the container. In the lower part of the container there is an inclined bottom or a shaking table on which the powder flows to an outlet opening. Means are provided for withdrawing gas from the container, cooling it and re-introducing it into the lower part of the container where it is forced by guide means to flow in contact with the powder flowing to the outlet opening. The flow direction of this re-introduced gas is substantially opposite to the direction of flow of the powder to the outlet opening, so that it has an efficient cooling effect on the powder.
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公开(公告)号：FR2328531A1
公开(公告)日：1977-05-20
申请号：FR7631908
申请日：1976-10-22
Applicant: ASEA AB
Inventor： LARSSON HANS-GUNNAR , WESTMAN ERIK
Abstract: A holding force for retaining a billet and die against a die support is obtained by forming a pressure drop in the pressure medium flow in a gap between the billet and a surrounding constructional element inside the pressure chamber. The gap may be formed by the outer surface of the billet and the inner surface of the high pressure chamber. The gap may also be formed between the outer surface of the billet and the inner surface of a spacing tube mounted within the pressure chamber. The spacing tube is constructed with a portion having a smaller diameter than the remainder of the spacing tube to provide a gap to achieve a sufficient pressure drop for retaining the billet and die against the die support.
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公开(公告)号：FR2317975A1
公开(公告)日：1977-02-11
申请号：FR7621804
申请日：1976-07-16
Applicant: ASEA AB
Inventor： LARSSON HANS-GUNNAR , WESTMAN ERIK
Abstract: In a press for hydrostatic extrusion, the die has a conical inlet portion and a portion forming a die opening. The die has draining channels which bypass the smallest cross-section of the die opening for the purpose of intercepting and diverting pressure medium which accompanies the billet as it moves down towards the smallest cross-section of the die. This removes any pressure medium which might otherwise pass through the die opening and damage the surface of the extruded article.
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公开(公告)号：FR2457731A1
公开(公告)日：1980-12-26
申请号：FR8011806
申请日：1980-05-28
Applicant: ASEA AB
Inventor： BRUNOSSON GUNNAR , LARSSON HANS-GUNNAR , WESTMAN ERIK
Abstract: Apparatus for manufacturing powder, especially metallic powder, by a melt atomization process, comprises a closed container in which a jet of gas is directed transversely into a stream of the melt and breaks it down into droplets which rapidly solidify and are thrown in a parabolic trajectory to the lower part of the container. In the lower part of the container there is an inclined bottom or a shaking table on which the powder flows to an outlet opening. Means are provided for withdrawing gas from the container, cooling it and re-introducing it into the lower part of the container where it is forced by guide means to flow in contact with the powder flowing to the outlet opening. The flow direction of this re-introduced gas is substantially opposite to the direction of flow of the powder to the outlet opening, so that it has an efficient cooling effect on the powder.
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Patent Agency Ranking
公开(公告)号：DE2934465A1
公开(公告)日：1980-03-20
申请号：DE2934465
申请日：1979-08-25
Applicant: ASEA AB
Inventor： LARSSON GUNNAR , WESTMAN ERIK
Abstract: The invention relates to a method for filling a capsule under rotation and a machine for carrying out the method. The capsule is rotated at a variable speed during the filling so that the centrifugal force at the inner surface of powder present in the capsule is essentially equal to the gravity. The centrifugal machine comprises a holder for the capsule and a drive structure by which the holder is driven at variable speed. The amount of supplied powder is measured and the speed is controlled in dependence on the output signal generated by the measurement.
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公开(公告)号：FR2325446A1
公开(公告)日：1977-04-22
申请号：FR7628462
申请日：1976-09-22
Applicant: ASEA AB
Inventor： LARSSON HANS-GUNNAR , WESTMAN ERIK
Abstract: The hydrostatic extrusion press has a receiver cylinder (3) containing a moulding die mounted on a support (7). There is a compression plunger (6) and sealing carrier ring on the end of rods (18). The inner edges of the cylinder (3) are chamfered, forming a sealing surface (11) inclined towards the centre line of the receiver cylinder. Similarly, the upper end of the cylinder is chamfered (12) and the compression plunger (6) is surrounded by a ring (14) with inclined surface (15) forming a sealing connection with the inclined open edge (12) of the receiver cylinder. The radial forces acting on the inclined surfaces during the extrusion operation result in contact pressures between the sealing surfaces, which are greater than the pressure in the pressure chamber. The inclined surfaces can have a rounded shape.
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公开(公告)号：DE2208861A1
公开(公告)日：1973-05-17
申请号：DE2208861
申请日：1972-02-25
Applicant: ASEA AB
Inventor： NILSSON JAN DIPL ING , SYVAEKARI PERTTI , WESTMAN ERIK
Abstract: A press for the hydrostatic extrusion of long billets has a stand with a pressure generating chamber and a pressure generating plunger insertable in the pressure generating chamber to generate high pressure in a pressure medium contained therein. A pressure chamber is arranged in line and communicates with the pressure generating chamber. A stationary support table is provided to take up axial forces on a die, and is spaced from the opening of the pressure chamber so that a die can be inserted into alignment with the opening of the pressure chamber. The support table contains a piston which is movable in the direction of the pressure chamber and on which the die support is carried for movement of the die into the opening of the pressure chamber opening.
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公开(公告)号：DE2962800D1
公开(公告)日：1982-07-01
申请号：DE2962800
申请日：1979-07-16
Applicant: ASEA AB
Inventor： LARSSON HANS-GUNNAR , WESTMAN ERIK
IPC: B22F9/08
Abstract: An apparatus for granulating a metal melt which comprises a closed housing having a granulating section and a collecting section for the collection of manufactured powder, the granulating including a casting box and one or more primary nozzles which form decomposing, groove-shaped gas jets which impinge against the stream of metal melt falling from the casting box to form droplets which are then thrown in a parabolic trajectory into the collecting section. The apparatus further includes one or more secondary nozzles producing one or more auxiliary gas jets which are used to increase the breakdown or granulating effect of the groove-shaped gas jets, to control the trajectory of the formed droplets in the collecting section of the housing and to prevent the eddying of the formed droplets towards the primary nozzles from which the groove-shaped gas jets emanate.
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公开(公告)号：CA1125964A
公开(公告)日：1982-06-22
申请号：CA332296
申请日：1979-07-20
Applicant: ASEA AB
Inventor： LARSSON HANS G , WESTMAN ERIK
Abstract: A method and a apparatus of forming a metal powder wherein a stream of molten metal is granulated by directing a jet of gas having a trough-shaped cross-section against the stream such that the stream is thrown into a parabolic trajectory. An additional gas jet is also directed towards the stream so that it hits both the trough-shaped gas jet and the stream.
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