Production method of general oriented silicon steel with twice cold rolling changed into one time cold rolling

The invention provides a production method of general oriented silicon steel with twice cold rolling changed into one time cold rolling, and the method comprises the following steps: (1) smelting, treating with vacuum, refining and continuously casting into blanks; (2) hot rolling; (3) normalizing a...

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Bibliographische Detailangaben
Hauptverfasser:	WEI ZHIQIANG, ZHANG AICHUN, ZHANG WEILIN, NIE RUOKUN, XU JIEBIN, ZHANG ZONGEN, JI FUXIANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL 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:	The invention provides a production method of general oriented silicon steel with twice cold rolling changed into one time cold rolling, and the method comprises the following steps: (1) smelting, treating with vacuum, refining and continuously casting into blanks; (2) hot rolling; (3) normalizing and pickling; (4) carrying out one time cold rolling with the cold rolling reduction ratio which is not less than 82%; (5) decarburizing and annealing, wherein, the decarburizing annealing temperature is 750-890 DEG C., and the atmosphere dew point is 25-75 DEG C., and the decarburization time is in the range of 90-350 seconds, and the steel band surface total oxygen amount is 170/t