RT Journal Article
SR Electronic
A1 Brezinová, Janette
A1 Džupon, Miroslav
A1 Vojtko, Marek
A1 Puchý, Viktor
A1 Milkovič, Ondrej
A1 Brezina, Jakub
A1 Maruschak, Pavlo
A1 Guzanová, Anna
T1 Analysis of CMT weld Clads for High-pressure die Casting Mold Restoration
JF Acta Mechanica Slovaca
YR 2019
VO 22
IS 4
SP 32
OP 42
DO 10.21496/ams.2018.032
UL https://www.actamechanica.sk/artkey/ams-201804-0005.php
AB 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.