METHOD OF HARDENING OF STEEL ROLL OF SECTION ROLLING MILL

FIELD: metallurgy; rolling process; hardening working gauges of steel rolls of section rolling mils. SUBSTANCE: proposed method includes mechanical turning of roll followed by heating it to temperature of 300-370 C at rate of 50-100 C/h. Subsequent hard-facing is performed at rate of 30-40 m/h and d...

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Bibliographische Detailangaben
Hauptverfasser:	KHOREV G.A, NIKIFOROV V.V, MONID V.A, TRAJNO A.I, TJAPAEV O.V, ROVKIN A.M, LUTSENKO A.N
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMBINED OPERATIONS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OTHER WORKING OF METAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	FIELD: metallurgy; rolling process; hardening working gauges of steel rolls of section rolling mils. SUBSTANCE: proposed method includes mechanical turning of roll followed by heating it to temperature of 300-370 C at rate of 50-100 C/h. Subsequent hard-facing is performed at rate of 30-40 m/h and density of electric current of 40-45 A/sq mm. Then, heat treatment is performed to temperature of 450-500 C continued for 1.5-2 h. EFFECT: enhanced resistance of rolls. 2 cl, 1 tbl, 6 ex