Patent ID: 8904642
Filing Date: 2014-12-09
Classification: B21D,Y10T

Abstract:
1. A method of manufacturing a vibration-damped, non-ferrous, light metal alloy part that, when installed in a chassis of a vehicle, is prone to vibration propagation and noise transmission during operation of the vehicle, the method comprising: forming a cavity within a non-ferrous, light metal alloy part at a selected damping region, the cavity being delineated by an interior surface that is provided by either an internally exposed bulk surface of the light metal alloy part or a non-wettable coating overlying the internally exposed bulk surface, wherein the non-ferrous, light metal alloy part is constructed for installation on a chassis of a vehicle; and introducing a polymer insert into the cavity, the polymer insert being sized and shaped so that an exterior surface of the polymer insert can experience relative frictional contacting movement with the interior surface of the cavity when vibrations are imparted to the light metal alloy part at the selected damping region, the exterior surface of the polymer insert comprising a portion that lies against the interior surface of the cavity and a portion that is separated from the interior surface by a gap.