REFRACTORY MOLD AND METHOD OF MAKING.

摘要

A refractory mold is disclosed. The refractory mold includes a fugitive pattern assembly comprising a hollow sprue that comprises a sprue wall disposed about a longitudinal axis; a pattern disposed outwardly of the sprue wall; and an outwardly extending gate attached to and extending between the sprue wall and the pattern, the hollow sprue, pattern and gate each formed from a fugitive material; and a refractory mold formed on and having a mold cavity defined by an outer surface of the fugitive pattern assembly.