| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Friction and Thermal Insulation: Influence of Oxide Scale on Hot Forging Sequences |
| Author(s) |
Laurent Dubar |
| On-Site Speaker (Planned) |
Laurent Dubar |
| Abstract Scope |
In the field of hot forging processes, oxide scales are produced on steel billets by oxidation at high temperature. During forming, the oxide layer at the billet/tool interface affects not only friction but also the heat exchange. A global approach is first proposed with the determination of friction coefficients at high temperature with the presence of oxides. The tests are performed on the Warm and Hot Upsetting and Sliding Test. An investigation is conducted at microscale with pin on disk test at high temperature in a controlled atmosphere, in order to understand the phenomena involved during the substrate/oxide/soap/tool contact. The analysis of the results is conducted by integrating local material data. Finally, a thermomechanical finite element modeling of the forging process is developed considering the mechanical and thermal effects of the oxide layers. The impact on the forging sequence is investigated, by quantifying global and local improvements of the model. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |