FOERFARANDE Før audio BELAEGGNING a roll or corresponding, I PRESSVALS interesting, particularly audio I pappersmaskin the OR CELLULOSAMASKIN.

摘要

The invention relates to a method for lining a roll or the like, particularly a press roll of a paper or pulp machine, where a metal shell, prestressed to a controlled degree, is fitted round and against a metal body. The length of a shell plate (3) is dimensioned depending on the diameter of a roll body (1) in the way that a gap (5) will be left in the longitudinal joint (4) of a shell (2) at the initial stage of the lining. When the shell plate (3) is being heated by a heating element (6), thermal expansion of the shell plate occurs while at the same time it is tightened in such a way that the gap (5) is diminished. After this the longitudinal joint (4) is welded. Finally the shell plate (3) is allowed to cool down, whereby it contracts and tightens to the desired tightness round and against the roll body (1).