| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a core for precision casting with improved high-temperature strength, a production method therefor, and a mold for precision casting.SOLUTION: A core for precision casting comprises a coating layer (19a) formed on the surface of a core main body (18a) for precision casting that is sintered using silica particles as the main component thereof, the coating layer composed of silica materials and alumina materials. As a result, holes (18c) formed on the surface are sealed. Therefore, core breakage during casting can be prevented.</p> |
