Abstract
AbstractThe process integrated powder coating by radial axial rolling of rings represents a new hybrid production technique in order to apply the functional layers on ring‐shaped work pieces. Since the layer is produced in a powder metallurgical way [1], the ring volume decreases during the compaction of the layer material. In conventional ring rolling processes an isochoric plastic deformation of the ring is exploited in order to control the process. However this is not true any more for a ring exhibiting a compressible layer [2]. Consequently different control mechanisms have to be developed for the new considered process. One major aspect is the stability of the process which is governed by a stable position of the ring as well as the roundness of the ring. Therefore the finite element (FE) model has been coupled with a PID‐controller unit and it will be shown that a stable process can be reached in this way. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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