Continuous casting, much like centrifugal molding, produces sheets or beams which may undergo further fabrication. Continuous casting involves forcing a melted metal through an open-ended mold. Heat is extracted and metal exits the mold as a solid fabricated sheet. Molds are commonly made of graphite.
Molds or "dies" last several weeks, after which graphite must be reworked to original specifications. Metal melting points impose severe restrictions on mold design. Consequently, iron is difficult while aluminium and its alloys are relatively easy to process. The technique already is well-automated and is used to fabricate aluminium and copper alloys, but only on very special applications for iron.
Source | Copyright