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. 28, 1985
Filed:
Jan. 20, 1983
Applicant:
Inventor:
Robert J Causton, Delran, NJ (US);
Assignee:
Davy McKee (Sheffield) Limited, Sheffield, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
148 16 ; 1481261 ;
Abstract
In order to anneal high speed steel powder having a hardness of the order of about 550 to 600 Vickers and an oxygen content of 1500-2000 ppm, the powder is heated to a maximum temperature of about 1050.degree. C. and held at that temperature for about one hour. The powder is then gas quenched to between 700.degree. and 780.degree. C., held at that temperature for about one hour, and finally gas quenched to ambient temperature.