OUTER LAYER MATERIAL FOR HOT ROLLING ROLL AND COMPOSITE ROLL FOR HOT ROLLING

PROBLEM TO BE SOLVED: To provide an outer layer material for a hot rolling roll and a composite roll for hot rolling having excellent wear resistance, seizing resistance and surface roughening resistance. SOLUTION: The outer layer material has a composition containing 2.4-3.2% C, 0.9-2.5% Si, 0.2-1....

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Bibliographische Detailangaben
Hauptverfasser:	ICHINO KENJI, TOYOOKA TAKAAKI, KOSEKI TOMOHITO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 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 HEATING LIGHTING MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PUNCHING METAL ROLLING OF METAL ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an outer layer material for a hot rolling roll and a composite roll for hot rolling having excellent wear resistance, seizing resistance and surface roughening resistance. SOLUTION: The outer layer material has a composition containing 2.4-3.2% C, 0.9-2.5% Si, 0.2-1.5% Mn, 0.8-2.5% Cr, 1.2-4.0% Mo, 2.0-7.0% Ni, 1.5-2.7% V, 0.1-0.8% Nb, 0.020-0.2% B, 0.0006-0.040% REM and also contents of C, Cr, Nb and V satisfy the relations: 1.8≤C-(0.236×V+0.129×Nb)≤2.6 and Cr/C