Disintegrative core for high pressure casting, method for manufacturing the same, and method for extracting the same
Disclosed is a method for manufacturing a disintegrative core for use in high pressure casting. The disintegrative core can be applied where a light metal such as an aluminum alloy or magnesium alloy is subjected to high pressure casting, such as die casting or squeeze casting and is manufactured fr...
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Main Author | |
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Format | Patent |
Language | English |
Published |
22.01.2001
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | Disclosed is a method for manufacturing a disintegrative core for use in high pressure casting. The disintegrative core can be applied where a light metal such as an aluminum alloy or magnesium alloy is subjected to high pressure casting, such as die casting or squeeze casting and is manufactured from a water-soluble salt which is high in latent heat and ranges, in melting point, from 280 to 520° C. and, in heat transfer coefficient (kappa), from 9.8x10<-2 >to 1.2x10 W/m.° C. The water-soluble salt, alone or in combination with a fine hard powder, is melted and solidified in a core mold. Alternatively, the melt is processed into a fine powder which is then molded in a core mold. The method can be applied for the manufacture of complex shapes of cores. Also, disclosed is a method for extracting such a core from a high pressure molded product. |
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Bibliography: | Application Number: AU20000055784 |