JPH05287379

PURPOSE:To maintain the prescribed hardness and maximum efficiency of a pipe as worked, at the time of subjecting a steel pipe having a specified compsn. to high-frequency bending, by deciding the working rate based on the relationship between it and the carbon equivalent of the steel pipe and the m...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HIRANO TAKAYUKI, MORIKAWA TAKASHI, MAE MADOKA, TANAKA YOSHIO, TANAKA TAKASHI, AKIYAMA MASAO, OKAZAWA TORU
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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To maintain the prescribed hardness and maximum efficiency of a pipe as worked, at the time of subjecting a steel pipe having a specified compsn. to high-frequency bending, by deciding the working rate based on the relationship between it and the carbon equivalent of the steel pipe and the maximum hardess after being worked. CONSTITUTION:A steel pipe contg., by weight, 0.03 to 0.30% C, 0.05 to 0.50% Si, 0.30 to 1.60% Mn,