PRESS ROLL AND METHOD FOR THE MANUFACTURING OF SAME

A press roll for a paper machine includes a cylindrical mantle formed of metal providing the roll with mechanical strength. A coating is provided on the roll mantle, the coating being partially or entirely metallic. The metallic coating is preferably formed of stainless steel containing chromium and...

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Bibliographische Detailangaben
1. Verfasser:	MIIHKINEN, VEIJO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BEARINGS BLASTING ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PRODUCTION OF CELLULOSE ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TEXTILES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A press roll for a paper machine includes a cylindrical mantle formed of metal providing the roll with mechanical strength. A coating is provided on the roll mantle, the coating being partially or entirely metallic. The metallic coating is preferably formed of stainless steel containing chromium and provides for a controlled detachment of the paper web from the roll coating as well as durability, i.e., ability to withstand various strains to which the roll surface is subjected. In addition to the metallic component, the roll coating may also include a component or components of ceramic material. A method for manfuacturing such a press roll includes the application of the coating to the surface of the cylindrical mantle by band welding wherein the welding admixture band is preferably in the range of between about 30 to 150mm wide and about 0.5mm thick. In the band welding, a ceramic admixture may be included in the welding band or, alternatively, the ceramic admixture may be alloyed into the molten weld by means of a shield powder.