Method of making aluminum piston with reinforced piston ring gro

Details Method of making aluminum piston with reinforced piston ring gro Method of making aluminum piston with reinforced piston ring gro

1977-03-25

1978-11-21

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

219121LM, 427 53, B23P 1510, B23P 900, F16J 102

Patent

active

041259262

ABSTRACT:
An aluminum piston for use in heavy duty internal combustion engines is disclosed, in which the grooves for receiving the piston rings are formed in stainless steel inserts fusion bonded directly to the aluminum without an intermediate metallic layer other than the resulting alloy of the steel and aluminum. The method of making such piston is described in which austenitic stainless steel powder deposited in an oversize groove in the aluminum piston is melted in situ by a laser beam to simultaneously form the stainless steel insert and alloy it with the aluminum to provide a fusion bond, the piston ring groove being subsequently formed in the stainless steel insert.

REFERENCES:
patent: 3295198 (1967-01-01), Coan
patent: 3310423 (1967-03-01), Ingham, Jr.
patent: 3562009 (1971-02-01), Cranston et al.
patent: 3952180 (1976-04-01), Gnanamuthu
patent: 4015100 (1977-03-01), Gnanamuthu et al.
patent: 4048459 (1977-09-01), Earle
"Laser Right on the Beam for Heat Treating Duty", from Iron Age, Feb. 10, 1975, pp. 45-47.
"Tools and Engineering Materials with Hard, Wear-Resistant Infusions", by Alfred Schmidt, from Journal of Engineering for Industry, Aug. 1969, pp. 549-552.

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