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1.发明公开
公开(公告)号：EP1991380A1
公开(公告)日：2008-11-19
申请号：EP07721961.6
申请日：2007-02-27
CPC分类号： B22F5/009 , B22F3/225 , B22F7/062 , B22F2998/10 , B28B1/002 , B28B1/24 , C04B35/638 , C04B37/021 , C04B2235/6027 , C04B2237/34 , C04B2237/341 , C04B2237/36 , C04B2237/361 , C04B2237/363 , C04B2237/40 , F23R2900/00018 , B22F3/1021
摘要： The invention relates to a method for producing a sealing segment to be used in compressor and turbine components by means of a powder injection molding process. Said method encompasses the following steps: a) a first homogeneous mixture of a metal powder or a mixture of metal powders or a ceramic powder or a mixture of ceramic powders and at least one binder is produced; b) a first molded article is produced by injection-molding the first mixture; c) a second homogeneous mixture of a metal powder or a mixture of metal powders or a ceramic powder or a mixture of ceramic powders and at least one binder is produced, said second mixture being chosen so as to be provided with less abrasion resistance than the first mixture following a subsequent joint sintering process; d) a second molded article is produced as a brush layer by injection-molding the second mixture; and e) the first and second molded article are joined so as to obtain the sealing segment. The invention further relates to a sealing segment which is to be used in compressor and turbine components and comprises at least one first molded article as a basic element and at least one second molded article as a brush layer, which has less abrasion resistance than the first molded article, the first and the second molded article each being produced using a powder injection molding process.
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2.发明授权
公开(公告)号：EP0883360B1
公开(公告)日：2002-02-27
申请号：EP97909335.8
申请日：1997-09-30
CPC分类号： A46D3/047 , F16J15/3288 , Y10T29/49297
摘要： The invention relates to a method for the manufacture of brush joints consisting of the following steps: stacking of bristles in an accommodating shaft so that the bristles are situated in part close to location for at least one brush face; movement of shaft accommodating bristles in synchronization with stacking of bristles relative to insertion point of bristles in accommodating shaft so that the surface position of bristles stacked in accommodating shaft remains at least substantially constant; fastening of bristles on at least one bristle face in accommodating shaft, and withdrawal of at least one brush face with bristles fastened thereon from the accommodating shaft. The invention also relates to a device for the production of brush seals enabling the above-mentioned method to be carried out.
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