Synthetic press role for paper machine

In a synthetic press roll to be used in a paper machine the surface layer of the cylinder mantle of the press roll is composed of a mixture of a metal powder and a powder of an inorganic material. The metal component may be copper, bronze, stainless steel, nickel, chromium, and/or a titanium alloy,...

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Bibliographische Detailangaben
1. Verfasser:	VEIJO MIIHKINEN
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CHEMISTRY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS 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 METALLURGY 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	In a synthetic press roll to be used in a paper machine the surface layer of the cylinder mantle of the press roll is composed of a mixture of a metal powder and a powder of an inorganic material. The metal component may be copper, bronze, stainless steel, nickel, chromium, and/or a titanium alloy, and the inorganic powder consists of quartz, feldspar, Al2O3, ZrO2, TiO2, TiC, SiC, MgO, Si3N4, Cr2O3, WC, Nbc, VC, Cr7C3, or of a corresponding ceramic material or of mixtures of same. The roll face is produced by thermal spraying, casting, by winding a sintered and/or rolled band around the cylinder, or by using a flexible mat in which the desired mix is bound by means of PTFE and in which the pre-coating is fixed by melting by means of induction or laser heating. The press roll provides means by which the detaching of the paper web from the roll face is controlled and the resistance of the roll to variations in temperature and to mechanical strains is improved.