Roll for supporting and conveying hot material, method for the production of a roll, method for repairing a used roll

The invention relates to a roll (1) for supporting and conveying hot material, comprising a roll element that has a roll jacket (2) made of a basic material and a wearing coat which is applied to the basic material by means of a surface welding process (4) using a welding additive and which surround...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SHAN GUOXIN, POEPPL JOHANN, LECHNER STEFAN, WIMMER FRANZ, THOENE HEINRICH, LEKIC-NINIC MARINKO, TRNKA KARL
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING FERROUS OR NON-FERROUS ALLOYS MACHINE TOOLS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PUNCHING METAL ROLLING OF METAL SOLDERING OR UNSOLDERING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a roll (1) for supporting and conveying hot material, comprising a roll element that has a roll jacket (2) made of a basic material and a wearing coat which is applied to the basic material by means of a surface welding process (4) using a welding additive and which surrounds the surface of the roll jacket. In order to increase the service life of the wearing coat, improve the resistance to wear, and reduce the cost for producing the welded-on surface, a roll (1) is proposed in which the basic material of the roll jacket (2) is steel and contains up to 0.45 percent of C, the welded-on surface (4) is designed as a single-layer weld, and the wearing coat contains 12.5 to 14.0 percent of Cr at least in an external zone that surrounds the surface of the roll jacket. The invention further relates to a method for producing the roll (1), a method for repairing a used roll (1), a welding additive and a welding rod for producing the welded-on surface.