Plastic deformation behaviors and their application in power spinning process of conical parts with transverse inner rib

摘要

By using FE method combined with experimental method, the power spinning processes of conical parts with transverse inner rib under different processing parameters are investigated. It is found that three kinds of typical plastic deformation behaviors, namely, under-filled, full-filled and unstable plastic deformation behavior occur in the forming process; the under-filled plastic deformation behavior has two different deformation modes; clearance between forming roller and mandrel and feed rate of forming roller are the two decisive factors influencing the plastic deformation behavior. Based on the study of plastic deformation behaviors, reasonable range of processing parameters for obtaining desired transverse inner rib is determined. Further, combining with the effects of processing parameters on the degree of inhomogeneous deformation and surface quality of finished spun parts, the rules for selecting reasonable processing parameters in power spinning process of conical parts with transverse inner rib are established for the first time. Then, reasonable values of processing parameters for a given process are determined, and desired spun parts with transverse inner rib are successfully obtained in experiment.