Plant for generating an atmosphere for the heat treatment of met

Details Plant for generating an atmosphere for the heat treatment of met Plant for generating an atmosphere for the heat treatment of met

1980-02-20

1981-07-21

Dean, R.

Metallurgical apparatus

With control means responsive to sensed condition

With means supplying a treating agent

266 82, 266 83, 266 88, 266 89, 266252, 266254, 266257, C21D 1100

Patent

active

042794064

ABSTRACT:
This invention relates to the generation of an atmosphere for the heat treatment of metals, incorporating an alcohol of the methanol type that decomposes by cracking.
A generating plant comprises a nitrogen circuit connected to a pressure source, an alcohol circuit connected to a pressurized tank containing the alcohol in the liquid phase and an injector arranged to feed the alcohol and nitrogen into the furnace in the form of a mist of alcohol within a jet of nitrogen.
The invention is applicable in particular to the hardening, heating prior to quenching, and annealing of steels.

REFERENCES:
Mouflard et al., Atmospheres de Cementation A Partir D'Azote et de Methanol, Revue de Metallurgie, vol. 58, May 1961.

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