Producing eutectic Al-Si alloy foils 160mm in width was at temptedby the use of a single roll splat cooling apparatus, in which relative nozzle-roll positions, ie. injection angle from 55°to 110°, nozzle-distance 0.5 to 50mm, nozzle-roll shaft skew angle 0°to 5°and degree of parallel between nozzle and roll surface 0°to 5°were controlled. When the injection angle is 90°, sound foils can be made within an extended range of thickness. The foil thickens at acute injection angles. The uniformity of thickness in the cross section is achieved by decreasing the nozzle-roll distance and nozzle-roll shaft skew angle and by increasing degree of parallel to nozzle-roll surface. The optimum nozzle-roll position includes 90° of injection angle, minimum nozzle-roll distance, 0° of nozzle-roll skew angle, and parallel setting of nozzle to roll.
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