Schell, Lukas ; Groche, Peter
Hrsg.: Gracious Ngaile, Kuniaki Dohda (2022)
Challenges in Tribometry for Warm and Hot Sheet Metal Forming of High Strength Aluminum with Tool Lubrication.
doi: 10.4028/p-lq0q96
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
For conventional sheet metal forming at room temperature, numerous tribometers were developed in the 20th century. At the present state of the art, unsolved issues for tribometry remain for temperature-supported forming processes of high strength aluminum (e.g. EN AW-7075), in which the sheet is heated to temperatures between 200 and 480 °C. The tribological design of these processes remains a major challenge, which needs to be addressed by investigations with adapted tribometers. In this study, a recently adapted strip drawing test for aluminum warm and hot forming is presented – including a newly developed strip heating unit, a die lubrication system and a die tempering system for efficient tribological testing. The contribution is completed with both, experimental results and a numerical investigation of temperature gradients in the strip drawing test. Finally, it is discussed whether transient process conditions of non-isothermal forming processes with die lubrication should be considered in tribometers for warm and hot sheet metal forming.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2022 |
| Herausgeber: | Gracious Ngaile, Kuniaki Dohda |
| Autor(en): | Schell, Lukas ; Groche, Peter |
| Art des Eintrags: | Bibliographie |
| Titel: | Challenges in Tribometry for Warm and Hot Sheet Metal Forming of High Strength Aluminum with Tool Lubrication |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Baech |
| Verlag: | Trans Tech Publications Ltd. |
| Reihe: | Defect and Diffusion Forum |
| Band einer Reihe: | 414 |
| DOI: | 10.4028/p-lq0q96 |
| Kurzbeschreibung (Abstract): | For conventional sheet metal forming at room temperature, numerous tribometers were developed in the 20th century. At the present state of the art, unsolved issues for tribometry remain for temperature-supported forming processes of high strength aluminum (e.g. EN AW-7075), in which the sheet is heated to temperatures between 200 and 480 °C. The tribological design of these processes remains a major challenge, which needs to be addressed by investigations with adapted tribometers. In this study, a recently adapted strip drawing test for aluminum warm and hot forming is presented – including a newly developed strip heating unit, a die lubrication system and a die tempering system for efficient tribological testing. The contribution is completed with both, experimental results and a numerical investigation of temperature gradients in the strip drawing test. Finally, it is discussed whether transient process conditions of non-isothermal forming processes with die lubrication should be considered in tribometers for warm and hot sheet metal forming. |
| Freie Schlagworte: | Aluminum, Hot Forming, Strip Drawing Test, Tribometry |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) 16 Fachbereich Maschinenbau > Institut für Produktionstechnik und Umformmaschinen (PtU) > Forschungsabteilung Tribologie |
| Hinterlegungsdatum: | 23 Jun 2022 06:34 |
| Letzte Änderung: | 23 Jun 2022 06:34 |
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