Characteristics of a Vertical Type Tandem Twin Roll Caster for Casting Clad Strip

Abstract

A roll caster for making the five layers clad strip was devised. In this process, three twin roll casters were set at the vertical tandem position. This vertical type tandem twin roll caster was assembled. Five layers clad strip can be cast directly from the molten metals by the vertical type tandem twin roll caster. First layer was cast by the first caster (upper caster). Second layers were cast by the second caster (mid caster). Third layers were cast by the third caster (lower caster). Procedure of casting to make five layers clad strip is as below. First layer was cast by first caster. This layer was drawn into second caster. When first layer went into the roll-bite of the second caster, the molten metal of second layers was poured to second caster. This three layers clad strip was drawn into third caster. When this three layers clad strip went into the roll-bite of the second caster, the melting of third layers was poured to third caster. In this study, two kinds of five layers clad strips were tried by this caster. One of 3003 aluminum alloy was used for first and second layers, and 4045 aluminum alloy was used for third layers. The other of 3003 aluminum alloy was used for first layer, and AC4C aluminum alloy was used for second layers, and 4045 aluminum alloy was used for third layers. Two kinds of five layers clad strips could be cast by this caster. The interfaces of five layers clad strips were clear and flat.