Tool steel powder production from scrap material or worn tools

Department

Department of Applied Science and Technology (DISAT), Politecnico of Turin

Main research activities/topics/projects

Among the iron-based alloys, tool steels have inherent strategic values in terms of the alloying elements in their composition (Cr, Mo, V, W, Co, Nb); furthermore, the carbon footprint associated with their production cycle is not negligible due to the complex secondary metallurgical processes involved (e.g. ESR, VAR). In this context, the use of powder metallurgy represents an approach to metallurgy and metal forming technologies that promotes sustainability by reducing waste and maximising resource efficiency. Although there are few studies in the literature on the production of tool steel powders, a systematic approach to the production of powders from scrap materials is still under investigation, both in terms of the effect of processing parameters and the use of scrap materials on the properties of atomised powders. 

The research to be carried out at the Politecnico di Torino laboratories, involving the Brazilian PhD candidate, aims to explore the possibility of producing tool steel powders starting from scraps and wastes from the conventional metallurgy. The activity will involve producing various batches of powder with different process parameters using a gas atomizer. These powders will be thoroughly characterized, assessing their chemical, physical, and processing properties. The following activities will be focused on evaluating the processability of the powders, primarily through Additive Manufacturing techniques, to identify the most effective process for producing demonstrators.

Working language

The working language can indifferently be either Italian or English.

Special entry requirements

Skills in the use of a gas atomizer

 Skills in the analysis of metals powders properties

 Knowledge of tool steels and of the (post) processes for the improvement of materials properties

 Knowledge in the field of Material Science 

 Expertise in Industrial Engineering, material processing and fabrication methods

 Communication and organizational skills

Duration in months (min-max)

PhD sandwich: 6-12