Piston and process of providing wear-resisting surfaces in the r

Details Piston and process of providing wear-resisting surfaces in the r Piston and process of providing wear-resisting surfaces in the r

1983-12-12

1985-12-31

Albritton, C. L.

Electric heating

Metal heating

For deposition welding

291565R, 92231, 219 7614, B23K 904

Patent

active

045623279

ABSTRACT:
An arc welding process is used for form wear-resistant surfaces at least in the uppermost ring groove of aluminum alloy pistons for internal combustion engines. To reduce the manufacturing costs and to avoid an increase of the weight of the piston, the piston blank is formed by machining with a groove in at least one region to be provided with a ring groove having wear-resistant surfaces. During a rotation of the piston blank about its longitudinal axis said groove is entirely filled by arc welding with a filler material which comprises a silicon-containing aluminum alloy. The molten pool is solidified as quickly as possible by an adequate cooling. The ring groove is subsequently formed by machining.

REFERENCES:
patent: 3014771 (1961-12-01), Nichols
patent: 3285717 (1966-11-01), Fischer
patent: 4223197 (1980-09-01), Imai et al.
patent: 4233490 (1980-11-01), Shalai et al.

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