| 摘要 |
PURPOSE: A ceramic baffle is provided to shield a molten metal cooling bath used in directional casting of superalloys from a high temperature furnace environment. CONSTITUTION: A plurality of floating ceramic baffles(24) are used, and floated on the top of such cooling bath so as to substantially cover the surface thereof. Each baffle member(24) comprises a hollow ceramic member and ceramic seal means(30) sintered to such hollow member so as to form a hermetically sealed chamber within the hollow member. The baffles are displaced during the directional casting process when a mold containing the cast article is lowered into the cooling bath. A ceramic baffle of the construction is also disclosed. |
