About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Melt Processing, Casting and Recycling
|
Presentation Title |
Fir Tree Studies on an EN AW-1200 alloy |
Author(s) |
Nicholas Grant Towsey, Giuseppe Esposito, Thien Dang, Phil Jankowski |
On-Site Speaker (Planned) |
Nicholas Grant Towsey |
Abstract Scope |
TRIMET Essen has had an ongoing fir tree occurrence in one of it’s EN AW-1200 alloys. A transition solution where affected ingots received an extra scalp was not sustainable, since longer term the scalper capacity needed to be substantially increased. Solving the problem was complicated by:
a) the feature occurring over several mold sets (ingot sizes & aspect ratios)
b) the occurrence patterns being random regarding the fir tree being on one or both of the rolling faces, the ingot‘s position on the casting station and the production sequence.
A series of R&D casts on a smaller scale, single mold DC casting facility were made, supported by simulations of solidification and fluid flow. These trials were complemented by limited scope production trials for addressing some interim customer targets.
Clear indications as to the causal factors and corresponding solutions could be established. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Solidification, Process Technology |