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Simulation of die pressing and sintering of powder metals, hard metals and ceramics

: Riedel, H.; Sun, D.-Z.

Chenot, J.-L.; Wood, R.D.; Zienkiewicz, O.C.:
NUMIFORM '92. Numerical Methods in Industrial Forming Processes. Proceedings
Rotterdam: A.A.Balkema, 1992
ISBN: 90-5410-0877
S.883-886 : Abb.,Lit.
International Conference on Numerical Methods in Industrial Forming Processes <4, 1992, Valbonne>
Fraunhofer IWM ()
ceramic; die pressing; hard metal; Hartmetall; Keramik; numerical simulation; numerische Simulation; sintering; Sintern; Trockenpressen

Constitutive equations for die pressing and sintering are developed and implemented in the finite-element program ADINA (copyright). As an example, the production of a hard-metal tool is simulated numerically. Due to its wedge-type profile, a gradient in green density develops during pressing. This leads to a severe shape distortion during sintering.