21-89 RELEVANŢA PROCESULUI DE ECRUISARE APLICAT ARCURILOR ELICOIDALE CILINDRICE ALE VEHICULELOR FEROVIARE


RELEVANT PROCESS APPLIED HARDENING COIL
SPRINGS CYLINDRICAL RAILWAY VEHICLES
In the performance of helical springs, the surface residual stresses are
introduced: the outside bar tensile stress and compressive stress inside the
bar. They associated with a possible primer for cracks can lead to premature
rupture of the spring in use. To eliminate this drawback springs are subjected to
hardening treatment which is performed, usually with steel shot.
This paper aims highlighting the importance of the hardening process
applied coil springs to increase resistance to fatigue and lifetime.
Cuvinte cheie : ecruisare, arcuri, epruveta ALMEN, bile de otel (alice)
Keywords: hardening, springs, Almen specimen, steel balls (shot)

89 RELEVANŢA PROCESULUI DE ECRUISARE APLICAT