PRODUCTION OF HIGH STRENGTH STEEL BAR AND WIRE

PURPOSE:To produce steel bars and wires of high strength by patenting steel contg. Al, Ti, V, Nb, Cr in specific amts. of C, silicon and Mn to pearlite structure and subjecting the same to drawing of specific reduction of area then to a bluing treatment at specific temps. CONSTITUTION:Steel contg.,...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI TOSHIHIKO, MURAKAMI MASAAKI, MORI TOSHIMICHI, ASANO ITSUYUKI, SATOU HIROSHI
Format:	Patent
Sprache:	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:	PURPOSE:To produce steel bars and wires of high strength by patenting steel contg. Al, Ti, V, Nb, Cr in specific amts. of C, silicon and Mn to pearlite structure and subjecting the same to drawing of specific reduction of area then to a bluing treatment at specific temps. CONSTITUTION:Steel contg., by wt%, 1 or >=2 kinds among 0.01-0.1 Al, 0.005- 0.05 Ti, 0.01-0.1 V, 0.005-0.1 Nb, and 0.2-1 Cr in 0.7-0.9 C, 0.5-2 silicon and 0.4-1.5 Mn is patented to form a pearlite structure. Next, it is subjected to drawing of 40-65% reduction rate of area and further to a bluing treatment at 250-600 deg.C. It is further preferable to apply 1-4% tensile strain thereto at the time of performing the bluing treatment.