Suspension torsion beam manufacturing process line apparatus and hybrid press forming torsion beam thereof

摘要

the present invention is a tubular (Tubular) having CTBA (Coupled Torsion Beam Axle) of the molding process at room temperature after cold forming from about 950 ~ 910 temperature of the heated and then re- forming and at the same time about 750 ~ 450 and then subjected to a primary indirect (mold ), cooled , pull out the material out of the secondary water cooling as material strength by implementing the method boosts to 1000MPa ~ 1500Mpa, low temperature quenching quenching does not occur (Quenching) in the annealed condition martensite (Martensite) and bainite (Bainite) and the internal organization was mixed payload Ride (Ferrite) may create , quenched (Quenching) and give it the toughness and has a temper (Tempering) characterized as a separate heat treatment step is applied selectively to be applied in order to improve the fatigue properties .