Design and realization of an experimental cold crucible levitation melting system for light alloys

Abstract

Thanks to their properties of ultra-lightness and high strength/weight ratio, Mg and Al alloys find increasing
employ in aerospace, automotive and biomedical applications. These alloys can be formed using all the
conventional technologies used for other materials, like casting and forming. However, the mechanical
properties of the final components are significantly influenced by the quality of the starting liquid metal.
In fact, the quality of the starting liquid metal has been substantially increased in recent years, thanks to the
improvement of cleaning technologies. To this purpose, electromagnetic processing of materials has evolved as
an important experimental technique in the fields of material processing, associated with applications such as
shape controlling, flow driving, online detecting, controlled heat generation, inclusion removing, magnetic
levitation. In particular, electromagnetic levitation, as a promising technique, can be helpful to create some
new phenomena and discoveries, especially in melting process. This work describes the design, optimization
and realization of a cold crucible levitation melting (CCLM) system for light alloys. Electromagnetic models are
used and applied in FEM codes to numerical simulate the working range of the CCLM.
The simulation results show good agreement with experimental data.