670315.fig.003a
(a)
670315.fig.003b
(b)
670315.fig.003c
(c)
670315.fig.003d
(d)
670315.fig.003e
(e)
Figure 3: Melting process in conventional DS furnace for power distribution ratio of 5 : 5: (a) 480 min; (b) 540 min; (c) 600 min; (d) 660 min; (e) 720 min.