Method of producting thin sheet of high Si-Fe alloy

摘要

PCT No. PCT/JP85/00534 Sec. 371 Date Feb. 10, 1986 Sec. 102(e) Date Feb. 10, 1986 PCT Filed Sep. 26, 1985 PCT Pub. No. WO86/02102 PCT Pub. Date Apr. 10, 1986.Fe alloy containing Si more than 4.0 wt % is produced by a thin plate casting process. The producing condition depends upon rapid solidification of Fe alloy from a molten condition at cooling rate of more than 1 DEG C./sen to less than 105 DEG C./sec. The obtained thin cast plates are subjected to a hot rolling of more than 30% at the temperature range of 600 DEG to 800 DEG C., and to the cold rolling to a determined thickness, followed pickling. By the above mentioned conditions, operations of the industrial scale may be practiced without cracks on the surface in the cold rolling excellent magnetic characteristics may be provided by passing the annealing after the cold rolling.