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, 2001
Filed:
Apr. 26, 2000
Applicant:
Inventor:
Rolf Oskarsson, Rönninge, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/12 ; C22C 1/05 ;
U.S. Cl.
CPC ...
B22F 3/12 ; C22C 1/05 ;
Abstract
The present invention relates to a method of making a WC—Co-based cemented carbide with a sintered mean WC-grain size in the range 0.4-1.6 &mgr;m. the cemented carbide is produced from well deagglomerated or easy to deagglomerate WC powder with round morphology, a Co powder also well deagglomerated or easy to deagglomerate and with a grain size equal to or smaller than the WC grain size and grain growth inhibitors. According to the invention the metal part of the grain growth inhibitors is added as part of the binder phase i.e., is included in the Co powder and alloyed therewith.