Authors:
Josip Vincic (Politecnico di Torino, Italy),
Diego Manfredi (Politecnico di Torino, Italy),
Alberta Aversa (Politecnico di Torino, Italy)
Abstract:
The D2 tool steel is a cold work tool steel with high hardness and high wear resistance, but not easy to be welded due to its high carbon content. On the other hand, as a result of the growing need for faster production, industries are facing higher tool wear than expected. The high costs of replacing tools has prompted thinking about repairing them. The aim of this study was to evaluate the possibility to repair D2 tool steel parts with a hot work tool steel or with a metal matrix composite using directed energy deposition (DED). The optimal parameters were found by depositing and analysing first single tracks, then single layers and ultimately multi-layers. The samples were analysed from a microstructural point of view, by optical and electron microscopy, and from a mechanical point of view, by hardness measurements. This work demonstrates the potential of DED for repairing industrial tools.
DOI:
https://doi.org/10.59499/WP225371682