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Simulation of the Electrical Resistance Sintering of Hardmetal Powders
Juan Manuel Montes,Francisco J. de la Viña,Íñigo Agote,Thomas Schubert,Francisco G. Cuevas,Yadir Torres,José María Gallardo,Jesús Cintas 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.2
The simulation of the electrical resistance sintering (ERS) of hardmetal powders has been studied. The ERS process canproduce a quick consolidation of electrical conductive powders by the simultaneous application of pressure and electricalcurrent. A model of the process has been developed, integrating three actions, namely, thermal, mechanical and electrical,and taking into account the nature of both the powders and the die where powders are placed. The model has been implementedin COMSOL Multiphysics, a finite element commercial program. This paper deals with the model fundamentals andhardmetal particular aspects, such as modelling properties of mixed powders and its thermal behaviour. Other parameters inthe model have been tuned to optimally fit the initial experimental data. To check simulation results, measurable parametershave been monitored during experimental tests with WC–6 wt% Co. Once the model was completed and put to work, resultsare discussed.