| 摘要 |
A casting and molding method is provided employing one or more hollow members disposed in a mold to provide a core for hollow molding. In one form, heat transfer liquid is predeterminately circulated through the hollow core member during the molding process and serves a number of functions including reduction in the time for the molding to set, prevention of destruction of the core member by heat and, in certain instances, internal support for the core member during molding. Automatic control means are provided for controlling both the molding procedure and the flow of heat transfer fluid through the core member. The method, with minor variations, is applicable to both casting and injection molding of various materials such as metals which are molded at high temperature and require the transfer of heat therefrom or thermosetting materials which require heat to be transferred to the molding material during the molding and setting procedure.
|
