ALLOY PIECE PRODUCTION DEVICE AND PRODUCTION METHOD FOR RAW MATERIAL ALLOY PIECE FOR RARE EARTH MAGN

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An alloy piece production device (1) comprising : a crystallinity controlling means (2) that controls the alloy crystal structure of provided alloy pieces, in a desired state; a cooling means (3) that cools the alloy pieces discharged from the crystallinity controlling means (2); and a chamber that maintains these in a decompressed or inert gas atmosphere. Heat processing can be uniformly applied over long periods to the alloy pieces immediately after ingots have been crushed, because the crystallinity controlling means (2) has : a rotation-type heating drum (21) having a cylindrical shape and which heats the supplied alloy pieces; and a switching means (23) that switches between retaining and discharging the alloy pieces supplied to the inside wall side of the heating drum (21). It is desirable for the heating drum (21) to have a brushing-up blade plate (22) that brushes up the alloy pieces supplied to the inside wall side in line with the rotation of the heating drum (21).