COIL SPRING WITH HIGH FATIGUE STRENGTH

PURPOSE:To produce a coil spring excellent in fatigue resistance and settling resistance by subjecting a wire rod having specific composition to patenting, wiredrawing, and quench-and-temper treatment and regulating surface roughness to a specific value. CONSTITUTION:A wire rod having a composition...

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Bibliographische Detailangaben
1. Verfasser:	MURAI TERUYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING METALLURGY SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To produce a coil spring excellent in fatigue resistance and settling resistance by subjecting a wire rod having specific composition to patenting, wiredrawing, and quench-and-temper treatment and regulating surface roughness to a specific value. CONSTITUTION:A wire rod having a composition which consists of, by weight ratio, 0.5-0.8% C, 1.2-2.5% Si, 0.4-0.8% Mn, 0.7-1.0& Cr, 0.005-0.030% N, two or three kinds among 0.1-0.6% V, 0.005-0.50% Mo, and 0.05-0.50% W, and the balance Fe with inevitable impurities and where the contents of Al and Ti among the inevitable impurities are regulated to