Method for manufacturing piston of internal combustion engine

Details Method for manufacturing piston of internal combustion engine Method for manufacturing piston of internal combustion engine

1987-06-26

1988-10-11

Hall, Carl E.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29418, 164 98, 164132, 123 4135, 123193P, 123196R, B23P 1510

Patent

active

047760753

ABSTRACT:
A method for manufacturing a piston of an internal combustion engine, especially for forming a piston gallery portion provided in the piston head for cooling the engine. A gallery member made of a metal pipe having a high thermal conductivity or a salt-core having a shape corresponding to the piston gallery is fixed to a fixing member having a peripheral rim and a plurality of fixing legs extended from the rim. The gallery member or the salt-core fixed to the fixing member is cast in the piston, body, and then, the fixing member is cut off from the piston body. The salt-core is melted away by pouring water. By this method, a piston of light weight and having high cooling efficiency can be manufactured.

REFERENCES:
patent: 3459253 (1969-08-01), Woolcott
patent: 4491168 (1985-01-01), Snee

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