Method of making a roll end for a roll in a paper or board machine or in a finishing machine, and a roll, in particular a heatable roll

摘要

A roll end for a roll, in particular for a heatable roll, in a paper or board machine or in a finishing machine has a whole formed by an end flange (31) and an axle journal (32), as well as a duct system (10) situated inside the material of the roll end (30), through which in a finished roll end a heat transfer medium is arranged to circulate from outside the roll through the axle journal (32) and the roll end (31) into bores of a roll shell and back. The roll end (30) is made by a powder metallurgy process in a mould (20) such that the duct system (10) for the heat transfer medium is formed in connection with the manufacture of the roll end by the powder metallurgy process. A hot isostatic pressing process in particular is used in the manufacture.