METHOD FOR REGULATING SURFACE HARDNESS OF ROLL FOR ROLLING

PURPOSE:To enhance the operation unit of a hardened roll for rolling by heating the roll to the desired temp. with an induction heater at arbitrary frequency so as to obtain the desired surface hardness by tempering without reducing the depth of hardening. CONSTITUTION:A hardened roll for rolling is...

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Bibliographische Detailangaben
Hauptverfasser:	HIDA OSAMU, TSUCHIYA KATSUHIRO, OZAKI NOBUHIKO, GOTO HIROSHI, KANO SHOICHI, NAKAJIMA TOSHIFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To enhance the operation unit of a hardened roll for rolling by heating the roll to the desired temp. with an induction heater at arbitrary frequency so as to obtain the desired surface hardness by tempering without reducing the depth of hardening. CONSTITUTION:A hardened roll for rolling is rapidly heated to the desired tempering temp. by induction heating with an induction heater at arbitrary frequency. At this time, a tempering effect is produced only in the surface layer of the required thickness by selecting the frequency and the desired surface hardness is obtd. without reducing the depth of hardening.