| 摘要 |
<p>A method of fastening core elements together without the use of foreign agencies, such as adhesives, screws or other such fasteners, uses the same core sand and resin that form the core elements themselves. Core sand elements are retained in an assembly by bodies of cured core sand and resin (13) in holes or cavities (51, 21) that span the interface between the core elements (11, 12) and fasten the core sand elements together. Core sand elements are provided with alignable holes (11a, 12a), or cavities, into which a mixture of core sand and a curable resin, preferably the same resin used in forming the core sand elements, is added and the curable resin is cured to provide a body of cured core sand and resin, preferably adhering to the core sand elements, fastening the core sand elements together.</p> |
