MEDIUM AND HIGH CARBON STEEL PLATE AND MANUFACTURING METHOD OF THE SAME

PROBLEM TO BE SOLVED: To provide a medium and high carbon steel plate already applying a spheroidizing-annealing, giving high workability and quenchability by uniformly dispersing fine cementite, and to provide the medium and high carbon steel plate having suitable nature before the spheroidizing-an...

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Hauptverfasser:	FURUTA TOMOHIRO, TAKESHIMA KAZUYUKI, ABE MASAYUKI, YATO HISANARI, OKAMOTO TAKESHI, OTANI TAKASHI, MORIMOTO TAKAHARU, MUKAIHARA TAKASHI
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:	PROBLEM TO BE SOLVED: To provide a medium and high carbon steel plate already applying a spheroidizing-annealing, giving high workability and quenchability by uniformly dispersing fine cementite, and to provide the medium and high carbon steel plate having suitable nature before the spheroidizing-annealing and the manufacturing method of the same. SOLUTION: The medium and high carbon steel plate is composed of 0.14-0.85% C, 0.01-1.00% Si, 0.10-2.00% Mn, ≤0.04% P, ≤0.03% S, 0.002-0.08% Al, and the balance Fe with inevitable impurities and applied with the spheroidizing-annealing, and in the medium and high carbon steel plate, the cementite having ≤0.6 μm the average grain diameter and ≤4.0 μm the maximum grain diameter is dispersed so that the average distance λ between the centers becomes ≤(1.2-0.3×C)μm, and the standard deviation σ of the distance between the centers becomes ≤(0.6×λ)μm. COPYRIGHT: (C)2010,JPO&INPIT