Method for reinforcement of pistons of aluminum or aluminum allo

Details Method for reinforcement of pistons of aluminum or aluminum allo Method for reinforcement of pistons of aluminum or aluminum allo

1984-02-03

1986-07-15

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

295275, 29530, 29DIG2, 29DIG5, 29DIG10, 29DIG44, 92176, 92213, 92224, 123193P, 164 98, 164111, 164113, 164120, B23P 1510, B22D 1900, B22D 2709, B22D 2711

Patent

active

045997721

ABSTRACT:
The reinforcement of the crown of a piston of aluminum or aluminum alloy for an internal combustion engine comprises the preparation of a reinforcement member (10, 13) which is provided with apertures (11, 14), or reentrants. The reinforcement member is placed in a crown-forming part (18) of a piston die in a squeeze casting apparatus and the piston is squeeze cast. The molten metal penetrates the apertures, or enters the reentrants, and these are so shaped that when the molten metal has solidified, keys are formed which connect securely the reinforcement member to the aluminum or aluminum alloy. Further reinforcement members can then be readily brazed or welded to the first reinforcement member.

REFERENCES:
patent: 1228049 (1917-05-01), Rich
patent: 1482778 (1924-02-01), Bowmar
patent: 1568835 (1926-01-01), Hawley, Jr.
patent: 2057560 (1936-10-01), Dempster
patent: 2262074 (1941-11-01), Welty
patent: 3545341 (1970-12-01), Fischer
patent: 3616729 (1971-11-01), Fishcer
patent: 4334507 (1982-06-01), Kohner et al.
patent: 4404262 (1983-09-01), Watmough
McGuire, "Squeeze Cast Diesel Pistons", Diesel & Gas Turbine Progress (Sep. 1979), pp. 59-60.
Kulkarni, "Squeeze Casting Comes of Age", Foundry H & T (Aug. 1974), pp. 76-79.

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