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. 08, 1979
Filed:
Aug. 17, 1977
Applicant:
Inventors:
Kazuo Ogata, Kobe, JP;
Seiya Furuta, Kobe, JP;
Assignee:
Kobe Steel, Ltd., Kobe, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148126 ; 75211 ; 148 16 ; 148 203 ;
Abstract
A process is provided for heating steel powder compacts in a controlled atmosphere consisting of a primary gas containing at least 80% by volume of an inert gas, and a secondary gas comprising 0.1 to 5% by volume, based on the volume of said primary gas, of a paraffinic hydrocarbon. The process makes it possible to reduce the residual oxygen concentration in the steel powder compacts, while maintaining accurate control of the carbon content.