THIN STEEL STRIP PLATE AND ENDLESS STEEL STRIP OF HIGH STRENGTH AND HIGH FATIGUE STRENGTH, AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: SEKIDO YOSHITO, OHASHI SHOICHI, YAMAZAKI SHINGO, SUGIMARU SATOSHI
• Format: Patent
• Language: English
• Published: 10.01.2013
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a thin steel strip plate and an endless steel strip that have high strength and high fatigue strength by controlling surface layer hardness, pearlite texture and residual stress in addition to increasing the content of C to a hypereutectoid level regarding a power transmission metal strip applied to a steel belt or the like of a mechanism for transmitting drive force or the like in an electrophotographic printer, a copying machine, a printer of a personal computer, or the like.SOLUTION: The thin steel strip plate and endless steel strip of high strength and high fatigue strength are regulated to comprise, by mass, 0.6-1.3% C, 0.1-1.50% Si, 0.1-1.5% Mn, at most 0.01% Al, and at most 0.01% Ti with a remaining portion consisting of Fe and inevitable impurities, and have a tensile strength of 1,500 MPa or more, an elongation of 2% or more, and a surface layer hardness of 400 HV 0.3 or more.