Roll and method for producing a roll
AssigneeVoith Patent GmbH
InventorAlexander Etschmaier
Life of this patent
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Abstract
A roll for use in a machine for producing or finishing a web of fibrous material, such as a paper, paperboard or tissue web, has a roll core. At least one bonding layer is formed thereon and at least one ceramic layer is formed on the at least one bonding layer. The at least one ceramic layer at least partially is formed of an oxidic compound in the form of a mixed-oxide ceramic.
Claims16
A roll for use in a machine for producing or finishing a web of fibrous material, the roll comprising:
- a roll core;
- at least one bonding layer formed on said roll core;
- at least one ceramic layer formed on said at least one bonding layer, said at least one ceramic layer being at least partially formed of an oxidic compound in the form of a mixed-oxide ceramic Cr2Ti2O7 produced on the basis of a mixing ratio of 50% to 95% Cr2O3 and 3% to 50% TiO2.
A method for producing a roll for a machine for producing or finishing a web of fibrous material, wherein the method comprises the following steps:
- i) preparing an oxidic compound to form a mixed-oxide ceramic by mixing and melting Cr2O3 and TiO2 at a mixing ratio of 50% to 95% Cr2O3 and 3% to 50% TiO2
- ii) producing a bonding layer on a roll core;
- iii) applying the oxidic compound in the form of a mixed-oxide ceramic Cr2Ti2O7 by an application method to form a ceramic layer on the bonding layer;
- to thereby form the roll having the roll core, the at least one bonding layer on the roll core and at least one ceramic layer on the bonding layer.
Dependencies are inferred from the claim text.