Patent ID: 8246783

Claim:
A roller for use in the thermal pressure treatment of roll goods comprising: a roller base body made of tempered and hardened forged steel or an alloyed cast iron having a hardness of at least 400 HV and no more than 620 HV; an intermediate material layer applied to the roller base body; an outer material layer applied to the intermediate material layer, wherein the outer material layer is a hard wearing layer that has a minimum hardness of 600 HV; and axially parallel peripheral bores designed to carry a fluid heat transfer medium, the bores being arranged in the roller base body equidistant from a roller axis and equidistant from one another, wherein a distance of the peripheral bores from a roller surface, measured to a point on an individual bore closest to the roller surface, is greater than 50 mm, and wherein the intermediate layer has a thermal expansion coefficient that is between those of the outer wearing layer and the roller base body.