Method and a press tool for manufacturing a separation disk

A method for manufacturing a separating disk adapted to be included in a disk package of a centrifuge rotor of a centrifugal separator,

• wherein the separating disk extends around an axis (x) of rotation and has a tapering shape with an inner surface and an outer surface along the axis (x) of rotation,
• wherein the separating disk is manufactured of at least a material and
• wherein the separating disk comprises a number of distance members in the form of pressed protrusions extending away from at least one of the inner surface and/or the outer surface,
• wherein the method comprises a press step, which comprises pressing of a blank of the material against a first tool part, which has a shape corresponding to the tapering shape of the pressed separating disk and comprises first form elements having a shape corresponding to the protrusions, the press step further comprises:
• a first part step, where the blank by means of a second tool part is pressed in a direction towards the first tool part, and
• a second part step, where a liquid is supplied at a pressure between the blank and the second tool part in such a way that the blank is pressed to abutment against the first tool part.

A press tool for manufacturing a separating disk adapted to be included in a disk package of a centrifuge rotor of a centrifugal separator,

• wherein the separating disk extends around an axis (x) of rotation and has a tapering shape with an inner surface and an outer surface along the axis (x) of rotation and wherein the separating disk is manufactured of at least a material and comprises a number of distance members in the form of pressed protrusions extending away from at least one of the inner surface and/or the outer surface,
• wherein the press tool comprises a first tool part and a second tool part,
• wherein the press tool is arranged to permit in a charging position introduction of a blank of said material between the first tool part and the second tool part,
• wherein the first tool part and the second tool part are arranged to be moved towards each other to a final position, and
• wherein the first tool part has a shape corresponding to the tapering shape of the pressed separating disk and comprises first form elements having a shape corresponding to the protrusions,
• the press tool further comprises a supply device arranged to permit in the final position supply of a liquid at a pressure between the blank and the second tool part in such a way that the blank is pressed to abutment against the first tool part.