According to an embodiment, a coil spring is formed of a wire which is helically wound, and includes an end turn portion and an effective portion, and a surface of the wire in the end turn portion includes an area which is softer than a surface of the wire in the effective portion.
COIL SPRING, SUSPENSION DEVICE, AND METHOD FOR PRODUCING COIL SPRING
SCHRAUBENFEDER, AUFHÄNGUNGSVORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG EINER SCHRAUBENFEDER
RESSORT HÉLICOÏDAL, DISPOSITIF DE SUSPENSION ET PROCÉDÉ DE PRODUCTION D'UN RESSORT HÉLICOÏDAL
2024-05-08
Patent
Elektronische Ressource
Englisch
IPC: | B21F Bearbeiten oder Verarbeiten von Draht aus Metall , WORKING OR PROCESSING OF METAL WIRE / B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / F16F SPRINGS , Federn |
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