Piston pin and method for making such

Details Piston pin and method for making such Piston pin and method for making such

1978-08-17

1980-07-01

Dean, R.

Metal treatment

Compositions

Heat treating

148 39, 148150, C21D 908

Patent

active

042104688

ABSTRACT:
A piston or wrist pin for joining a pistonhead to a connecting rod commonly used in an internal combustion engine has an elongated hollow cylindrical configuration. The metal chosen for the pin may contain selective amounts of carbon, boron, nickel, chromium, vanadium and other alloying constituents to produce a metallurgical composition which may be selectively heat treated to provide a final structure having physical properties to meet a particular job requirement. The heat treating of the pin may be accomplished in a two step procedure which creates a pin having microstructural zones of residual stress having equal and opposite values.

REFERENCES:
patent: 3567529 (1971-03-01), Burtnett

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