Acta Mechanica Slovaca 2018, 22(4):32-42 | DOI: 10.21496/ams.2018.032

Analysis of CMT weld Clads for High-pressure die Casting Mold Restoration

Janette Brezinová1, Miroslav Dľupon2, Marek Vojtko2, Viktor Puchý2, Ondrej Milkovič2,3, Jakub Brezina1, Pavlo Maruschak4, Anna Guzanová1
1 Department of Mechanical Engineering Technologies and Materials, Faculty of Mechanical Engineering, Technical University of Koąice, Mäsiarska 74, 040 01 Koąice, Slovakia
2 Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Koąice, Slovakia
3 Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Koąice, Park Komenského 11, 040 01 Koąice, Slovakia
4 Department of Automation of Processes and Production, Faculty of Applied Information Technologies and Electrical Engineering, Ternopil Ivan Puµuj National Technical University, Ruska 56, 46001, Ternopiµ, Ukraine

The paper presents results of the research focused on the possibility of restoration of the shape parts of molds made of X15CrNiSi20-12 heat resistant austenitic chromium-nickel-stainless steel working in high-pressure die casting of aluminum alloys by clad welding. There were tested two welding wires - Thermanit 625 and Thermanit X, deposited on X15CrNiSi20-12 tool steel using cold metal transfer (CTM) welding in protective atmosphere of Ar. Two important properties of welded clads were tested - resistance of welds against dissolution in molten aluminum alloy AlSi8Cu3 and wear resistance of welds. Resistance of welds against dissolution were assessed by exposition of welded clads in aluminum melt for 120 and 300 minutes. The EDX semiquantitative microanalyses of element distribution were performed at the welding-melt interface, also build-ups were observed on the surface of welded clads. Wear resistance of the welded clads was tested using pin-on-disk test at room temperature. Results were compared to reference material - base tool steel X15CrNiSi20-12.

Keywords: high pressure die casting; wear; dissolution; CMT welding.

Published: February 1, 2019  Show citation

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Brezinová, J., Dľupon, M., Vojtko, M., Puchý, V., Milkovič, O., Brezina, J., Maruschak, P., & Guzanová, A. (2018). Analysis of CMT weld Clads for High-pressure die Casting Mold Restoration. Acta Mechanica Slovaca, 22(4), 32-42. doi: 10.21496/ams.2018.032
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