About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Cast Shop Technology
|
Presentation Title |
Industrial Verification of One- and Two-chamber Siphon Degassing |
Author(s) |
Arild Hakonsen, Terje Haugen |
On-Site Speaker (Planned) |
Arild Hakonsen |
Abstract Scope |
Removal of dissolved Hydrogen from liquid Aluminium prior to casting is industrial standard today. The challenge the casthouses face is to remove as much Hydrogen as possible with as low cast as possible. Cost drivers for degassing is energy and Argon consumption in addition to drain metal, maintenance and consumable parts. Hycast has for almost two decades supplied a drain free two-rotor siphon degassers for metal flow rates up to 75mt/h (I-60 SIR), and has recently launched a one-rotor version for metal flow rates up to 25mt/h (I-25 SIR). This paper is a summary of the industrial results gained over these years.
The effect of the relative Argon flow rate to the metal flow rate, the alloy composition and the rotor speed on the removal efficiency is investigated. One conclusion found from the measurements is that the Hydrogen concentration within one degassing chamber is close to constant. |
Proceedings Inclusion? |
Planned: Light Metals |