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公开(公告)号：SE7701156L
公开(公告)日：1978-08-04
申请号：SE7701156
申请日：1977-02-03
Applicant: ASEA AB
Inventor： LARKER H
IPC: B22F1/00 , B30B11/00 , C04B35/645 , F26B17/12 , C21D3/02
Abstract: Powder is degassed in a plant where the powder flows downwards from one vessel(a) through a pipe(b) into a second vessel(c). Pipe(b) has a by-pass (b1) leading to a vacuum pump; and below pipe(b1) is an adjustable choke(b2) controlling powder flow. In order to reach vacuum pipe(b1), gas removed from the powder must pass up a column of the powder which traps any fine powder particles carried upwards by the gas. Pipe(b) is pref. fitted with a by-pass(b2a) round choke (b2), which is followed by a heater located round tube(b), esp. an induction heating coil. Below the heater, a branch pipe pref. leads to a second vacuum pump used e.g. to evacuate vessel(c), which receives the degassed powder. Esp. used for powders which are to be subsequently compacted by isostatic pressing, e.g. superalloy powders or Si3N4, where all gases must be removed before pressing.
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公开(公告)号：SE7612146A
公开(公告)日：1978-05-03
申请号：SE7612146
申请日：1976-11-02
Applicant: ASEA AB
Inventor： LARKER H
IPC: C04B35/645 , G21F9/30 , G21F9/34
CPC classification number: C04B35/6455 , G21F9/30
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公开(公告)号：ZA7700476B
公开(公告)日：1977-12-28
申请号：ZA7700476
申请日：1977-01-27
Applicant: ASEA AB
Inventor： LARKER H , ADLERBORN J
IPC: C04B35/645 , B22F3/12 , C04B35/584 , C04B35/593 , C04B35/64 , C04B
CPC classification number: C04B35/593 , B22F3/1241 , B22F3/125
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Patent Agency Ranking
公开(公告)号：GB1475016A
公开(公告)日：1977-06-01
申请号：GB3859474
申请日：1974-09-04
Applicant: ASEA AB
Inventor： LARKER H
Abstract: 1475016 Extrusion ASEA AB 4 Sept 1974 [5 Sept 1973] 38594/74 Heading B3P A hydrostatic extrusion press has a high pressure cylinder composed of a liner tube 10 surrounded by a prestressed outer member and the end surfaces 15 of the liner tube are inclined towards the cylinder axis. The inclination facilitates sealing between the liner tube and the pressure-generating punch 2 and between the liner tube and the extrusion die. The inclination is greater than 1 : 20. The sealing is effected by a pair of mating metal rings 21, 26 which engage a support ring 18 provided with a frusto-conical surface 20 engaged with the inclined end surface of the liner tube.
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公开(公告)号：SE393099B
公开(公告)日：1977-05-02
申请号：SE7507699
申请日：1975-07-04
Applicant: ASEA AB
Inventor： ADLERBORN J , LARKER H
IPC: C04B35/58
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公开(公告)号：SE7308927L
公开(公告)日：1974-12-27
申请号：SE7308927
申请日：1973-06-26
Applicant: ASEA AB
Abstract: For detecting leakage past a high pressure seal which seals a space in which a high pressure exists, there is arranged outside the high pressure seal a collection space for pressure medium which leaks into the space and a device is provided connected with the space to detect changes in the pressure or temperature therein and to produce a signal or to stop the press. The detecting device may be an insulated cable which seals the space on the side remote from the high pressure seal and which may be broken by pressure within the space, thereby interrupting an electrical circuit.
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