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Anode erosion in wire-EDM - a theoretical model

: Spur, G.; Schönbeck, J.


CIRP Annals. Manufacturing Technology 42 (1993), No.1, pp.253-256
ISSN: 0007-8506
Journal Article
Fraunhofer IPK ()
finite element analysis; process model; wire-EDM

Theoretical predictions concerning the machinability of different materials by EDM are difficult because numerous aspects govern this problem. The influence of the thermophysical material properties which play a dominant role can be studied best by a theoretical model. Thus, a new model which is tailored after a typical wire-EDM discharge has been developed and experimentally verified. The model discribes the impact of a discharge on the anode as a heat source on a semi-infinite solid whose size and intensity are time-dependent. The numerical analysis of this mathematical problem has been performed by using the Finite element method.