Method of making a cast aluminum based engine block

Details Method of making a cast aluminum based engine block Method of making a cast aluminum based engine block

B - Operations, Transporting

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B22D 19/00 (2006.01) B22C 9/10 (2006.01) F02F 1/10 (2006.01) F02F 7/00 (2006.01) F02B 75/18 (2006.01)

Patent

CA 1186482

- 13 - ABSTRACT OF THE DISCLOSURE A method of making a die cast aluminum based engine block with a closed deck is disclosed. A core assembly having at least one water soluble alkaline metal salt core member is stationed on a bore die of a die casting assembly for the block. The core assembly also preferably comprises an iron cylindrical liner centered within the salt core member by an aluminum mesh collar which dissolves in the cast metal during high pressure aluminum die casting. The salt core member is fabricated by die casting under pressure and heat to form a shaped body which, as a core, cooperates to define a substantially closed chamber to serve as the water jacket for the block. The salt core member is removed from the cast block by water dissolution admitted through small port openings in the closed deck block to form a brine, which brine is then washed out of such port openings.

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