Direct-chill (DC) casting is a semi-continuous casting process that is used for producing and magnesium alloy billets (D. G. Eskin, 2008). As illustrated in (Figure 1), the consists of feeding melt (liquid metal) into a mould containing a movable bottom (the ). The ram is lowered and the billet is pulled downwards by gravity. As the billet exits the , its exposed outer surface is chilled with water jets to hasten cooling (hence the term -chill).
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Bruno Lebon (2023) studied this question.
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