Closed shot die casting system

Details Closed shot die casting system Closed shot die casting system

B - Operations, Transporting

22

D

B22D 17/30 (2006.01) B22D 17/04 (2006.01) B22D 17/20 (2006.01)

Patent

CA 2068058

A method and apparatus for closed shot die casting is disclosed in which a molten metal filling cylinder is provided intersecting a shot sleeve in fluid communication with a filling hole in the shot sleeve. Molten metal is introduced into the filling cylinder. The molten metal passes from the filling cylinder through the filling hole into the shot sleeve until the shot sleeve is completely filled with molten metal. The filling cylinder includes a piston-like, reciprocating internal valve which moves into position to seal off the filling hole. As a result, the shot sleeve is completely filled with molten metal and pressure-sealed prior to the advancement of the shot plunger.

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