PURPOSE: To produce an Al alloy strip having high accuracy of thickness by specifying a distance between a nozzle for spouting molten metal and a cooling base plate, at the time of producing the Al alloy strip by a rapid solidifying method.
CONSTITUTION: In the method obtaining the metallic strip 6 by spouting the molten metal 3 on the cooling base plate from a gap between a first lip 1 and a second lip 2, i.e., the nozzle opening hole, the distance between the nozzle for spouting the molten metal and the cooling base plate are made to be 1.5-5mm in the front part and 0.02-0.5mm in the rear part in the shifting direction of the cooling base plate to spout the molten metal on the shifting base plate. The front part in the shifting direction of this cooling base plate designates the distance (d2) between the second lip 2 and the cooling base plate 5. On the other hand, the rear part in the shifting direction of the cooling base plate designates the distance (d1) between the first lip 1 and the cooling base plate 5. By this method, grooving defect and defect of hole, etc., developed in the conventional method are prevented and the Al alloy strip having high accuracy of the thickness can be produced.
ENDO MICHIO
IMAGUNBAI MASAKATA
