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Large Diameter Billet Casting Technology

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Large Diameter Billet Casting Technology

Tim Scott, Research Metallurgist, Wagstaff, Inc., Spokane Valley, Washington, USA

Track: BILLET PROCESS & EQUIPMENT - Casting, Casthouse, Environmental Health & Safety

ABSTRACT—Wagstaff, Inc. has been involved with billet casting technology design for many years,
with sizes typically below 530mm diameter. Interest in increased billet diameters recently induced a fresh
look at the need to cast a wide range of alloys in extended sizes. The intent of the Wagstaff® Advanced
Refractory Channel (ARC™) large-diameter billet technology development is to push the boundaries of
current market capabilities. To date, development has been primarily focused on casting the challenging
2xxx and 7xxx alloys with the ARC mold. First production tooling has been manufactured and shipped to
be commissioned this year. To broaden the benefits to the casthouse, a parallel research project was
established to investigate the effect of electromagnetic (EM) stirring as an additional method to increase
value to end users of large-diameter billets produced with ARC technology. Wagstaff, Inc. provided the
casting tooling and casting expertise, while ABB provided the modeling, electromagnet, and power
supply control for the stirring.

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