Production method of high-performance wide-specification bridge steel plate

A production method of a high-performance wide-specification bridge steel plate, and belongs to the technical field of controlled rolling of low-carbon structural steel. The production process comprise steps of: a smelting process by using converter smelting for top-blown or top-bottom blowing; vacu...

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU DEGUANG, ZHENG HUIPING, LI ZHANJUN, WANG GENJI, MA CHANGWEN, LI CHUNZHI, WANG LIFENG, HUANG SHAOSHUAI, YANG YONGDA, MENG DONGLI, WANG YANFENG, DI GUOBIAO, BAI XUEJUN
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A production method of a high-performance wide-specification bridge steel plate, and belongs to the technical field of controlled rolling of low-carbon structural steel. The production process comprise steps of: a smelting process by using converter smelting for top-blown or top-bottom blowing; vacuum treatment by LF furnace and RH furnace; casting process: thickness specifications of 300mm and width of 1800-2400mm; heating process: heating temperature between 1150-1250 DEG C, and high-pressure water descaling after discharging; rolling process: using a dual rack two-stage controlled rolling process rough rolling stage; using the longitudinal direction of the casting blank as the width direction of the steel plate in a rough rolling stage; and conducting a finish rolling stage with start rolling temperature of 800-950 DEG C and finish rolling temperature at 770-870 DEG C, and conducting ACC cooling after rolling. The high-performance wide-specification bridge steel plate has the advantages of high strength, good low temperature toughness and thickness directional performance.