Method and apparatus for preheating molds for aluminum castings

摘要

Method and apparatus for manufacturing aluminum alloys castings, for example those cast aluminum parts utilized in the manufacture of automobile engines: cylinder heads, engine blocks and the like; whereby the castings are cast in a plurality of permanent-type or semi-permanent-type molds, said molds being preheated to a predetermined temperature before starting the casting operation, and being provided with temperature sensors and a logic device which produces a blocking signal for the casting system when the temperature of the mold is below a predetermined casting temperature in order to minimize the number of scrap castings due to uneven or low mold temperatures, and preferably further including additional apparatus for creating and flowing hot gases through the interior of the mold, advantageously in the form of a burner and hood shaped to fit over at least some mold openings. <IMAGE>