| 摘要 |
The invention relates to a method for compacting a powder material into a homoge- nous article. According to the invention the method comprises the steps of; placing the powder material in a moulding cavity (5) connected to a gas source, blowing gas into the lower end of the moulding cavity (5) so that the particles in the powder material are suspended in a gas stream, sealing the upper end of the moulding cavity (5) by an upper pressing punch (3), connecting the lower end of the moulding cavity (5) to a vacuum source, sealing the connection (6,7) to the vacuum source by moving a lower punch (4 ) relative to the lower end portion of the moulding cavity (5), and thereafter compacting the powder material with the help of the pressing punc h (3). The invention also relates to an apparatus for performing the method.</ SDOAB> |
