Fluidized bed apparatus for treating metals

Details Fluidized bed apparatus for treating metals Fluidized bed apparatus for treating metals

1985-09-12

1987-06-09

Brody, Christopher W.

Metallurgical apparatus

With control means responsive to sensed condition

266 81, 266 90, 266252, C21O 900

Patent

active

046714960

ABSTRACT:
This application discloses a method and apparatus for conducting various metal treatment processes including nitriding, carbonitriding, nitrocarburizing, surface activation, and selective oxidation in any desired sequence in the same fluidized bed furnace. The apparatus comprises a fluidized bed furnace having a humidifier system including a humidifier and superheater and the method involves exposing a metal workpiece sequentially to at least two separate metal treatment atmospheres in a fluidized bed furnace.

REFERENCES:
patent: 2699927 (1955-01-01), Gilroy et al.
patent: 2981526 (1961-04-01), Grumbach
patent: 3105104 (1963-09-01), Neiss
patent: 3655172 (1977-04-01), Ingels
patent: 3658602 (1972-04-01), Pomey
patent: 3659604 (1972-05-01), Melville et al.
patent: 4249889 (1981-02-01), Kemp
Japka J., "Using the Fluidized Bed for Nitriding Type Processes", Metal Progress, vol. 123, No. 2, Feb. 1983.

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