Abstract
Cemented carbide scrap was reclaimed by commercial zinc recycling process to a fine powder. The fine powder was further processed by spray drying and high shear mixing to feedstock for sintering and thermal spraying. Both powders and manufactured parts were characterized and compared to references. The results revealed that process and application relevant compositional adjustments (Co, Cr etc.) of the powder can be performed like for primary raw materials. The most critical issues are the particle size distribution, shape, and density of the fine powder and granulated feedstock. As good as or even better results than reference were obtained irrespective of small differences in particle characteristics, which indicate very good applicability of the reclaimed WC-Co materials. Life cycle assessment study revealed clear benefits of recycling. High performance products can be assured by a careful selection of the scrap and adjusting the process according to the application.
| Original language | English |
|---|---|
| Title of host publication | Euro PM2025 Proceedings |
| Publisher | European Powder Metallurgy Association (EPMA) |
| Number of pages | 8 |
| DOIs | |
| Publication status | Published - 14 Sept 2025 |
| MoE publication type | A4 Article in a conference publication |
| Event | EURO PM2025 Congress & Exhibition - Glasgow, United Kingdom Duration: 14 Sept 2025 → 17 Sept 2025 |
Exhibition
| Exhibition | EURO PM2025 Congress & Exhibition |
|---|---|
| Country/Territory | United Kingdom |
| City | Glasgow |
| Period | 14/09/25 → 17/09/25 |
Keywords
- Recycling of used cemented carbide parts is a effective way to reduce the usage of critical raw materrials (CRM). Both technical and life cycle issues are covered. It is shown that there is no issues hindering the use of recycled WCC