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:
Mar. 25, 2014
Filed:
Nov. 25, 2009
Florent Chaffotte, Bagneux, FR;
Didier Domergue, Palaiseau, FR;
Florent Chaffotte, Bagneux, FR;
Didier Domergue, Palaiseau, FR;
Abstract
The invention relates to a method for generating an atmosphere for heat treating metal parts in a furnace, which includes inserting, in at least one phase of the treatment cycle or at least one area of the heat treatment furnace, a mixture comprising gaseous COand ethanol in the form of fine droplets or vapor, so as to carry out the reaction between the COand the ethanol inside the furnace to form a mixture of hydrogen and CO according to the reaction: CO+CHOH→3 CO+3 H, characterized in that the injection is performed in a phase of the treatment cycle or in an area of the heat treatment furnace in which the temperature is higher than 750° C., while COalone or optionally mixed with nitrogen is injected in the phase or phases of the treatment cycle or in the area or areas of the furnace in which the temperature is lower than 750° C.