FIELD: machine engineering.
SUBSTANCE: plate segment adapted for mounting on a disc disperser, or a refiner for the cellulose crushed material comprises a front side having a dispersing teeth or grinding the blades, the back side having a projecting rack surrounding the fastener installation structure, and protruding plate positioning portion, and side edges of the plate segment, the radially outer edge and a radially inner edge extending between the side edges, wherein the back side has no protruding structures along the side edges. Also the disk assembly is disclosed as well as the plate segment to the refiner or dispenser and a method for forming plate segment comprising a casting plate segment using the molten metal is poured into a mould, where the form comprises a recess for the rear side of the plate segment that contains no protruding ribs along the side edges back-side cooling plate segment and the segment extracting from the mould after pouring molten metal, as well as cleaning and removing from the sprue plate segment cooled and grinding the cooled plate segment.
EFFECT: weight reduction.
20 cl, 13 dwg
