Method and apparatus for heat treating a bushing

Details Method and apparatus for heat treating a bushing Method and apparatus for heat treating a bushing

1999-02-02

2000-04-11

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148571, 148575, 148594, C21D 142

Patent

active

060484179

ABSTRACT:
Conventional methods for heat treating cylindrical components such as track bushings involve multiple steps. For example, many such methods consist of carburizing, cooling, induction-hardening, quenching, and tempering. The conventional methods have proved to be costly because different heat treating apparatus are required. This causes duplicate handling and wasted manufacturing time. The present invention provides a method and apparatus 30 for heat treating a bushing 10 simultaneously from an outer peripheral surface and the pair of inner circumferential surfaces.

REFERENCES:
patent: 3567529 (1971-03-01), Burtnett
patent: 4637844 (1987-01-01), Pfaffman
patent: 5049207 (1991-09-01), Sahara et al.
patent: 5702667 (1997-12-01), Pond

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