| 摘要 |
A tubular compact (14) obtained by compacting a powder is applied with one circumferential surface (16) at a minimum distance required for said application, from an abutment surface (15) corresponding to said one circumferential surface (16). The space between said one circumferential surface (16) and the abutment surface (15) is evacuated, such that the compact (14), while undergoing a certain deformation to bridge said space, is sucked against the abutment surface (15) so as to be firmly retained against it. A device for carrying out the above comprises a support means (1) having an abutment surface (15) corresponding to one circumferential surface (16) of the compact (14), at least one opening (2) provided in the abutment surface (15) of the support means (1), and a channel which is provided in the support means (1) and which at one end communicates with the opening (2) and at the other end is connectible (11, 12) to a vacuum source (13), such that an evacuation, brought about by the vacuum source (13) through the channel and the opening (2), of the space between the abutment surface (15) and the compact (16) sucks the latter into a position of firm retention against the abutment surface (15). |
