Method of manufacturing composite strips by continuous casting

A method of forming a composite material formed of a strip which is between 0.1 and 1 mm thick of a metal having a mechanical strength and melting point which are substantially higher than those of aluminum, the strip being plated on at least one face of a strip of the aluminum which is between 1.5 and 20 mm thick by continuous casting of the aluminum between spaced parallel rolls, the aluminum being discharged between the rolls by means of a nozzle having a flattened cross-section and a width equal to the strip to be cast which is placed in the vicinity of the rolls, the metal strip to be plated onto the aluminum strip being interposed between the roll or rolls and the aluminum, comprising the steps of:

• contacting the strip of plating metal with one of the rolls over an arc of contact which is greater than 30.degree. and includes the portion thereof between a generatrix closest to the end of the nozzle and a generatrix situated in the plane of the roll axes;
• providing a clearance between the nozzle and the roll entraining the plating metal of a dimension smaller than the thickness of the plating strip increased by 1 mm;
• and,
• providing a casting speed such that the elongation of the plating metal strip is greater than 1% and less than that of the aluminum once the aluminum has solidified.