| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
Molten Aluminum Test for the Identification of PVD Coating Candidates for Lube-free Aluminum Die Casting |
| Author(s) |
Nelson Campos Neto, Andras L Korenyi-Both, Stephen P Midson , Michael J Kaufman |
| On-Site Speaker (Planned) |
Nelson Campos Neto |
| Abstract Scope |
In the aluminum high-pressure die casting process (HPDC) liquid-based lubricants are sprayed onto die surfaces prior to each shot to act as a parting agent, control die surface temperatures, and prevent aluminum soldering. Unfortunately, lubricants also cause several problems, such as reducing casting quality, increasing production costs, and the production of effluents that must be discarded. PVD coatings are often applied to die surfaces to minimize soldering and to enhance tooling life. The concept of a HPDC process free of liquid-based lubricants is new, but very promising, as demonstrated by recent research that achieved a ~85% reduction in conventional lubrication spray in a die casting trial through the deposition of an AlCrN PVD coating onto an entire H13 steel die. In this work, several PVD coatings have been evaluated using a laboratory-based molten aluminum test in an attempt to identify the best candidates for moving HPDC to a lube-free process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Surface Modification and Coatings, Aluminum |