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:
Mar. 11, 2014
Filed:
Nov. 18, 2011
Peter Leicht, Latrobe, PA (US);
Mark Greenfield, Greensburg, PA (US);
Volkmar Sottke, Muelheim a.d. Ruhr, DE;
Zhigang Ban, Perrysburg, OH (US);
Hartmut Westphal, Dernbach, DE;
Yixiong Liu, Greensburg, PA (US);
Michael Frank Beblo, Delmont, PA (US);
Peter Leicht, Latrobe, PA (US);
Mark Greenfield, Greensburg, PA (US);
Volkmar Sottke, Muelheim a.d. Ruhr, DE;
Zhigang Ban, Perrysburg, OH (US);
Hartmut Westphal, Dernbach, DE;
Yixiong Liu, Greensburg, PA (US);
Michael Frank Beblo, Delmont, PA (US);
Kennametal Inc., Latrobe, PA (US);
Abstract
A coated cutting insert for removing material from a workpiece that includes a substrate is disclosed. A wear-resistant coating on the substrate that includes an alumina layer and a Zr- or Hf-carbonitride outer layer deposited on the alumina layer. The Zr- or Hf-carbonitride outer layer is subjected to a post-coat wet blasting treatment. The wet blasting changes the stress condition of the exposed alumina coating layer from an initial tensile stress condition to a compressive stress condition.