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:
May. 06, 1980
Filed:
Sep. 18, 1978
Applicant:
Inventors:
Cornelis H Luiten, Nijmegen, NL;
Werner Gohring, Kleve, DE;
Assignee:
Ipsen Industries International GmbH, Kleve, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 165 ; 148 166 ; 148 315 ;
Abstract
A method for gas carburization of workpieces made of steel in a furnace chamber, by which in the initial phase of the treatment more carbon than desired is released or dissolved in the workpiece surface and in the final phase of the treatment is decarburized to the desired edge carbon content by change of the quantity flow of the decarburizing gas. The decarburizing process is performed by exclusive introduction of a hydrogen-free, oxygen-containing decarburization gas in the furnace chamber.