| 摘要 |
The invention relates to a method for compacting a powder material into a homogenous 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 punch (3). The invention also relates to an apparatus for performing the method. <IMAGE> |
