1990-09-01

New Casting Technology for Closed Deck Aluminum Cylinder Blocks 901725

This paper describes a technology and its application to V8 type closed deck aluminum cylinder blocks for the LEXUS LS400. The low pressure casting method is generally used for the manufacture of high quality aluminum blocks with the closed deck shape. The method is. however, not suitable for mass production due to its low productivity. The newly developed casting method is a kind of differential pressure type casting method such as the low pressure casting method. The characteristic feature of this new method is to suck up the molten metal and to feed it into a die. Since the air in such a die is easily exhausted by this method. the efficiency of feeding molten metal into a die is positively improved. Owing to this new technology, high quality closed deck aluminum blocks can be manufactured with high productivity.

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