MANUFACTURE OF FINE GRAIN STEEL

PURPOSE:To manufacture fine grain rolled steel stock having a superior mechanical property similar to that after normalizing without requiring normalizing after rolling, by applying hot rolling and heat treatment under specified conditions to low or medium carbon steel or alloy steel contg. specifie...

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Bibliographische Detailangaben
Hauptverfasser:	SAWADA YUJI, MAEDA YUKIYOSHI, IKEDA TATSUO, GUMI KAZUMA, OSHIRO TAKEHIKO, WADA YUKIO
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:	PURPOSE:To manufacture fine grain rolled steel stock having a superior mechanical property similar to that after normalizing without requiring normalizing after rolling, by applying hot rolling and heat treatment under specified conditions to low or medium carbon steel or alloy steel contg. specified small quantities of Al and N. CONSTITUTION:Steel slab of low and medium carbon steel or alloy steel contg. by weight 0.10-0.60% C, 0.10-0.35% Si, 0.30-1.80% Mn, 0.010-0.045% Al, 0.007-0.020% N, (Al/N weight ratio >1.6) of further 0.015-0.10% Nb or singly or composedly one kind or more among