Process for treating metals using recycled gases

Details Process for treating metals using recycled gases Process for treating metals using recycled gases

1978-09-12

1980-08-26

Camby, John J.

Heating

Processes of heating or heater operation

Controlling flame position or work atmosphere

432 72, 432209, F27B 322, F27B 504

Patent

active

042193249

ABSTRACT:
A process is described for treating metals in a furnace by indirect heating techniques, e.g., by using a radiant tube heater, wherein the gas used for heating is passed out of the furnace, treated in a known manner, and passed back into the furnace to serve as the source for the treating atmosphere or as a carrier gas. Carburization of metals can be carried out by this method which results in a savings in fuel and overall operational expense.

REFERENCES:
patent: 2589811 (1952-03-01), Holcroft
patent: 2799490 (1957-07-01), Rusciano
patent: 3225516 (1965-12-01), Smith et al.

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