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:
Aug. 31, 2004
Filed:
Dec. 02, 2003
Seco Tools AB, Fagersta, SE;
Abstract
A coated sintered cemented carbide body includes a cemented carbide body, a first layer adjacent the cemented carbide body, the first layer including Ti(C,N) and having a thickness of from about 3 to about 20 &mgr;m, an alumina layer adjacent said first layer, the alumina layer including &agr;-Al O or &kgr;-Al O and having a thickness of from about 1 to about 15 &mgr;m, and a further layer adjacent the aluminum layer of a carbide, carbonitride or carboxynitride of one or more of Ti, Zr and Hf, the further layer having a thickness of from about 1 to 15 &mgr;m. A friction-reducing layer, including one or more of &ggr;-Al O , &kgr;-A1 O and nanocrystalline Ti(C,N) and having a thickness of from about 1 to about 5 &mgr;m, can be adjacent to the further layer. A method to cut steel with a sintered cemented carbide body where the alumina is &agr;-Al O and a method to cut cast iron with a sintered cemented carbide body where the alumina is &agr;-Al O .