Speaker
Description
Aluminum die-casting requires an efficient melting technology to conserve energy, because aluminum die-casting process produces a large amount of aluminum casts and consumes huge quantity of energy. We have suggested the possibility of supplying molten aluminum to the die-cast process in a short time by DC induction heating using a superconducting magnet. In our DC induction heating equipment, the aluminum samples in sample holders were rotated around the rotating shaft which is perpendicular to the magnetic field. The mechanical energy to rotate the aluminum samples in a magnetic field was converted into heat and it could melt the samples. We presented the preparation of the conduction-cooled superconducting split coil pair comprised of eight rectangle shaped double pancake coils, using REBCO coated conductors. The superconducting split coil pair was cooled and generated a magnetic field of about 1 T at the outermost circumference of the rotating aluminum specimens. This time, we examined some ways to hold the aluminum specimens to reduce the uneven distribution of aluminum melt. Then aluminum samples with a total weight of more than 2 kg were observed to melt in a short period and that is better for energy saving. The details of the aluminum melting tests will be discussed.
