METHOD FOR MANUFACTURING COLD-ROLLED, WELDED STEEL SHEETS, AND SHEETS THUS PRODUCED

The invention relates to a method for manufacturing a cold-rolled steel sheet with a thickness ef of 0.5 mm to 3 mm, comprising the consecutive steps of: providing at least two hot-rolled sheets witha thickness e,, and then welding said at least two hot-rolled sheets end-to-end, so as to create a we...

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Bibliographische Detailangaben
Hauptverfasser:	SILVY LELIGOIS CHRISTOPHE, THEYSSIER MARIERISTINE, KACZYNSKI CHRISTINE, CELOTTO THIERRY, POLO MESTRE VICENTE, QUANG-TIEN NGO, DECHASSEY EMMANUEL, DUPUIS THOMAS, CHICHARRO HERRANZ FRANCISCO
Format:	Patent
Sprache:	chi ; 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:	The invention relates to a method for manufacturing a cold-rolled steel sheet with a thickness ef of 0.5 mm to 3 mm, comprising the consecutive steps of: providing at least two hot-rolled sheets witha thickness e,, and then welding said at least two hot-rolled sheets end-to-end, so as to create a welded joint (S1) in a direction perpendicular to the hot-rolling direction; then stripping by continuously passing said at least two hot-rolled sheets through a bath; then cold-rolling, in a step (L1), the assembly of the at least two hot-rolled and welded sheets, to an intermediate thickness eint,the cold-rolling direction (DL1) matching said hot-rolling direction, said cold-rolling being carried out with a reduction rate [Epsilon]1=Ln(e/e) so that: 0.35