Co-free drill bit
| Reference number | |
| Coordinator | Kungliga Tekniska Högskolan |
| Funding from Vinnova | SEK 3 600 000 |
| Project duration | October 2022 - October 2025 |
| Status | Completed |
| Venture | The strategic innovation programme for Metallic material |
| Call | Sustainable metal industry - Efficient material flows |
Important results from the project
All goals were accomplished and important results include: - Current models for predicting the martensite start temperature worked well for predicting the martensite fraction in cemented carbides. - The new hard metal grades showed the same wear mechanisms as the reference, but better wear resistance. - In field tests the new material did equally well as current cobalt based standard grades.
Expected long term effects
A continued strong collaboration between industry and academia on the topic of alternative binder cemented carbides. In the future, new products with less dependence on critical raw material. Results from this project show that this is possible.
Approach and implementation
The project was managed through regular project meetings with the whole project group and with work meetings in smaller groups on details of the different work packages. WP1 was mostly carried out by KTH, while WP2 was carried out by Sandvik. WP3 was a close collaboration between Sandvik and KTH where materials analysis was done and analysed by both partners. Likewise WP4 was a close collaboration between Sandvik and Boliden.