Computer modeling of the facing by resistance sintering of metal powders

Zbigniew Zimniak, Zbigniew Bartnik

Institute of Production Engineering and Automation, Wroclaw University of Technology,ul. Łukasiewicza 5, 50-371 Wroclaw, Poland.

DOI:

https://doi.org/10.7494/cmms.2007.2.0142

Abstract:

Pure, alloy and composite metal powders are used for facing by resistance sintering (based on resistance welding principles). Facings produced in this way are characterized by unique properties which are difficult to obtain by traditional methods. This kind of facing process has no limitations as to the type of base and facing material. The quality of the facing depends on the facing process parameters. The process was modelled using the finite element method (FEM). The simulation covered coupled complex electrical, thermal, mechanical, metallurgical and surface phenomena. The compression of nickel powder subjected to resistance heating on a steel base between two copper electrodes was simulated. The base was made of 3 mm thick low-carbon steel sheet S235JR. The mechanical and physical material properties and their change with temperature were investigated. Although the phenomena which occur during facing by resistance sintering have a three-dimensional character, a two-dimensional model was adopted to simplify the analysis. The FEM calculations were performed using the MSC.Marc&Mentat 2005 software with an additional Marc-Electrical module. The numerical simulations were run for a coupled electrical-thermal-mechanical analysis. The aim of the mathematical modelling of the facing process was to identify the parameters which for the physical properties of the materials used for the facing and the base allow one to obtain a high quality facing continuous with the base. The numerical simulation results are compared with experimental results.

Cite as:

Zimniak, Z., & Bartnik, Z. (2007). Computer modeling of the facing by resistance sintering of metal powders. Computer Methods in Materials Science, 7(2), 196 – 201. https://doi.org/10.7494/cmms.2007.2.0142

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