Effect of Magnetic Field on Air Film Continuous Casting
The influences of low frequency magnetic field and static magnetic field on the air film casting process are studied in this paper. 6063 aluminum alloy ingot of 174-mm diameter were produced by electromagnetic air film casting process; intensity of the coil current is from 50 to 200A, and frequency is from 15 to 30Hz. The results showed that low-frequency magnetic fields can speed up the flow of liquid metal in sump and the air film stability was undermined, leading to folds and segregations appeared on the ingot surface. Static magnetic field could inhibit the melt to erosion the solidified shell effectively, it’s help to improve the speed and pull good surface quality.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
F. Qu and J. Z. Cui, "Effect of Magnetic Field on Air Film Continuous Casting", Advanced Materials Research, Vols. 189-193, pp. 2827-2831, 2011