| 摘要 |
PROBLEM TO BE SOLVED: To provide a closing mechanism (1) for pouring a molten metal from a laddle with a bottom hole. SOLUTION: The closing mechanism (1) comprises at least partially stacked three ceramic plates (2, 3, 4), and the ceramic plates (2, 3, 4) are respectively provided with hole parts (5). The three ceramic plates (2, 3, 4) are buried in ceramic materials (7), and the ceramic materials (7) are present on at least two faces. One unit is formed of the ceramic materials (7) and a metallic outer shell (10) used as a molding die. COPYRIGHT: (C)2009,JPO&INPIT
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