METHOD FOR MANUFACTURING STEEL SHEET

A method for producing a steel plate according to the present invention comprises a step for producing a steel sheet having a Si content of 1.0 mass% or more and a Cr content of 1 mass% or less, in a case where the Cr content of the steel sheet is 0.2-0.6 mass% inclusive, and in a case where the Cr...

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Bibliographische Detailangaben
Hauptverfasser:	MAEKAWA SHUYA, OTOMO RYOSUKE, NAKAKUBO SHOHEI
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 METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
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Beschreibung
Zusammenfassung:	A method for producing a steel plate according to the present invention comprises a step for producing a steel sheet having a Si content of 1.0 mass% or more and a Cr content of 1 mass% or less, in a case where the Cr content of the steel sheet is 0.2-0.6 mass% inclusive, and in a case where the Cr content of the steel sheet is less than 0.2 mass% so as to satisfy formula 1A below, and a step for producing a steel sheet having a Si content of 1.0 mass% or more and a Cr content of 1 mass% or less, in a case where the Cr content of the steel sheet is 0.2-0.6 mass% inclusive, in a case where the Cr content of the steel sheet is less than 0.2 mass%; and a step for annealing the steel material so as to satisfy formula 1B and so as to satisfy formula 1C when the Cr content of the steel material is more than 0.6 mass% and 1.0 mass% or less in formula 1A, formula 1B, and formula 1C: # imgabs0 # imgabs1 # imgabs2: in formula 1A, formula 1B, and formula 1C: T represents the soaking holding temperature during the anneal