Method of producing by casting a piston with a cooled ring...

Details Method of producing by casting a piston with a cooled ring... Method of producing by casting a piston with a cooled ring...

2005-01-04

2005-01-04

Dunn, Tom (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S048000, C164S075000, C164S061000

Reexamination Certificate

active

06837298

ABSTRACT:
To prevent, in a cooled ring carrier (1) for pistons, durinh Alfin bonding, the formation of oxides induced by air that escapes due to porous ring carrier material and, as a consequence, an impairment of the ring carrier bond. To this end, the cooled ring carrier, once the ring carrier part and the sheet metal part (3) have been linked, is subjected to negative pressure in a vacuum tank.

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