| 摘要 |
<p>A spruing assembly (2) for receiving investment material in the production of an investment mold for castings by the "lost wax" process which includes a hollow chamber to receive the investment material formed by a base member (4) and an engaging tapered ring (10, 11). A horizontal feeder bar (12) is contained within the chamber and is supported by hollow sprue means (14A, 14B). The feeder bar is open at its top and has a narrow channel for conducting molten wax into the hollow sprue support. The base member includes a centralized sprue base former (6) and support means (8) associated with the former to provide support for the hollow sprue means supporting the feeder bar.</p> |
