SPRING STEEL WIRE, METHOD FOR PRODUCING THE SAME, AND SPRING

PROBLEM TO BE SOLVED: To provide a spring steel wire having high strength and high toughness, a method for producing the same, and a spring excellent in fatigue resistance and resistance to permanent set.SOLUTION: The spring steel wire includes, by mass%, 0.5%-0.8% C, 1.0%-2.5% Si, 0.20%-1.0% Mn, 0....

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	SHIMIZU KENICHI, FUJINO YOSHIRO, MURAI TERUYUKI, TAKAMURA NOBUE
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a spring steel wire having high strength and high toughness, a method for producing the same, and a spring excellent in fatigue resistance and resistance to permanent set.SOLUTION: The spring steel wire includes, by mass%, 0.5%-0.8% C, 1.0%-2.5% Si, 0.20%-1.0% Mn, 0.5%-2.5% Cr, and 0.05%-0.50% V, with the balance being Fe and unavoidable impurities, wherein when the wire is subjected to low temperature annealing of 400°C-450°C×20 min, the yield stress after the low temperature annealing is higher by 300 MPa or more as compared with that before the low temperature annealing. This spring steel wire is excellent in machinability and can easily form a spring because it has low yield stress before the spring machining. Further, this spring steel wire provides a spring excellent in fatigue resistance and resistance to permanent set because it has high yield stress after the low temperature annealing assuming the distortion removal heat treatment after the spring machining. This spring steel wire can be produced by subjecting the wire material after the quenching and annealing to wire drawing of a specific reduction of area.