| 摘要 |
<p>The invention describes a method of compacting the surface of a sintered part (2), whereby a sintered part (2) is moved in a die (1) along an axis (3) in a pressing direction (20) through several die portions (7, 8, 9) from a first die portion (7) at a first die orifice (6) into a last die portion (9), and a wall surface (16) of each die portion (7, 8, 9) forms at least one pressing surface (18) against which a contact surface (17) formed by an external surface (12) of the sintered part (2) is pressed, and an internal contour (25) defined by the pressing surface (18) lying in a cross-section by reference to the axis (3) at least approximately corresponds to an external contour (26) defined by the contact surface (17). As the sintered part (2) is moved, the surface is compacted from the first die orifice (6) to the last die portion (9) by die portions (7, 8, 9) continuously merging into one another and by monotonously decreasing internal diameters (19) of the die portions (7, 8, 9) as measured between co-operating pressing surfaces (18).</p> |
