Coated roller chain pin

Details Coated roller chain pin Coated roller chain pin

1997-08-25

1999-02-02

Jones, David

Chain, staple, and horseshoe making

Chain making

Roller chain

59 5, 59 8, 59 351, 59901, F16G 1306

Patent

active

058650210

ABSTRACT:
The present invention relates to the case hardening, tempering and coating of a medium carbon alloy chain pin. A medium carbon alloy chain pin is provided and is case hardened to a selected radial depth. The case hardened chain pin is quenched and then tempered to introduce a gradient from the surface of the chain pin inwardly in carbon content and hardness. The chain pin is then coated with an electroless nickel and fluorinated carbon co-deposition to increase surface hardness.

REFERENCES:
patent: 4615171 (1986-10-01), Burk

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