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:
Nov. 02, 2004
Filed:
Jan. 07, 2002
Applicant:
Inventor:
Peter Littecke, Huddinge, SE;
Assignee:
Sandvik AB, Sandviken, SE;
Primary Examiner:
Int. Cl.
CPC ...
B23B 2/714 ; C23C 1/630 ;
U.S. Cl.
CPC ...
B23B 2/714 ; C23C 1/630 ;
Abstract
The present invention relates to a cutting tool with increased tool life when machining grey cast iron. The tool comprises a solid CBN-containing body containing more than 60 vol % CBN and a coating. The coating consists of at least one layer of metal nitride, carbonitride or carbide with the metal elements selected from at least one of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, W and Al, with a total thickness of 2-7 &mgr;m and 2-8 &mgr;m of &agr;- and/or &kgr;-Al O . The coating is a CVD coating deposited at 900° C. or higher.