The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1981
Filed:
Feb. 20, 1980
Applicant:
Inventors:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
266 81 ; 266 82 ; 266 83 ; 266 88 ; 266 89 ; 266252 ; 266254 ; 266257 ;
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.