Continuous Strip Casting of Aluminum Alloy AC7A Using Commercial Scale Twin Roll Caster

Abstract

This paper describes a commercial scale twin roll strip casting process for producing aluminum alloy strip of AC7A. Twin roll casting process is able to produce a strip from molten metal directly. Thus this process has a possibility to reduce total cost of strip making. However, strip casting process has some disadvantage. Casting speed depends on the material properties. It is difficult to decide the casting conditions. Many paper on the strip casting are reported. However, there are few reports on the commercial scale machine. In this study, the effect of roll speed on the strip casting was investigated. Continuous strip could not be produced at the roll speed 5 m/min. Continuous strip could be produced at the roll speed 10 m/min. However, the cracks were observed. Continuous strip was produced at the roll speed 20 m/min. However, cracks were observed too.