Cold chamber die-casting piston

Details Cold chamber die-casting piston Cold chamber die-casting piston

B - Operations, Transporting

22

D

B22D 17/20 (2006.01) B22D 17/08 (2006.01)

Patent

CA 2387617

The finding relates to a piston for cold chamber die-casting machines that comprises a steel body and at least one sealing band in copper alloy mounted around the body into a respective housing in back position with respect to the piston head. At least two channels are provided on the outside surface of the piston comprised between head and sealing band, for an inflow on the melted metal under the same band. When such metal solidifies, it creates a thickness that radially pushes the band outwards, thus compensating for its wear.

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