Patent ID: 7571528
Filing Date: 2009-08-11
Classification: B21J,B21K,B23P,Y10T

Abstract:
1. A method for manufacturing highly loadable components with different stress zone, comprising: determining a deformation rate necessary to provide desired strength properties for each of a plurality of different critical stress zones of a finished component, wherein the deformation rate for each critical stress zone corresponds to a volume of a preform in the critical stress zone as compared to a volume of the finished component in that same critical stress zone, with a higher deformation rate providing increased strength properties and resulting from a higher ratio of preform volume to finished component volume within a respective critical stress zone, and wherein each of the different critical stress zones has different desired strength properties requiring a different deformation rate; determining a volume of the preform for each critical stress zone that will provide the necessary deformation rate; producing the preform in a one-step forming operation such that the preform has the determined volume in each of the critical stress zones to provide the necessary plurality of deformation rates; and subsequently finish forging the preform to attain, in each of the critical stress zones, the required deformation rate of the preform and the strength properties of the finished component.