METHOD OF HEATING STEEL

PROBLEM TO BE SOLVED: To simultaneously control the temperature distributions in the width direction of steel and the moving direction when heating the steel before the finish rolling in the hot rolling process. SOLUTION: The steel H is heated with heaters 31, 32, 33 in this order while moving the s...

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Bibliographische Detailangaben
1. Verfasser:	TAKAHASHI KOUYA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To simultaneously control the temperature distributions in the width direction of steel and the moving direction when heating the steel before the finish rolling in the hot rolling process. SOLUTION: The steel H is heated with heaters 31, 32, 33 in this order while moving the steel. The interval XRbetween the cores 41, 42 of the heater 31 and the middle part PCof the steel H and the interval XLbetween the cores 41, 42 of the heater 33 and the middle part PCare respectively made variable. In such constitution, the target value of the output of each heater 31, 32, 33 and the target value of each interval XR, XLare determined on the basis of the target value of temperature rise ΔTCwhich is given to the middle part PC, the target value of the difference ΔERof the temperature rise between the temperature rise which is given to the side parts PRand the temperature rise ΔTCand the target value of the difference ΔELof the temperature rise between the temperature rise which is given to the side part PLand the temperature rise ΔTC. Further, the output of each heater 31, 32, 33 is made equal to each other when the cores 41, 42 of each heater 31, 32, 33 are opposed in the prescribed position of the steel H. COPYRIGHT: (C)2008,JPO&INPIT