Abstract
Two kinds of roll casters to cast the aluminum alloy clad strip were invented. One was a vertical tandem type twin roll caster and the other was an unequal diameter type roll caster. Three layers of clad strips were able to be cast by these roll casters. The three layers clad strip, of which the temperature of the liquidus line of the base strip was higher than that of the overlay strip, could be cast by the vertical tandem type roll caster. When the temperature of the liquidus line of the base strip was lower than that of the overlay strip, the unequal diameter type roll caster was used to cast the three layers clad strip. The interfaces between the strips were clear and the layer of the diffusion of the element was very thin. The clad strip was not peeled off at the interface by the bending and the cold rolling. The strips were connected strictly. The casting of the strip and the cladding of the strips could be operated simultaneously by one caster.
