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:
Dec. 20, 2011
Filed:
Mar. 28, 2008
Zhigang Ban, Latrobe, PA (US);
Mark J. Rowe, New Derry, PA (US);
Yixiong Liu, Greensburg, PA (US);
Alfred S. Gates, Jr., Greensburg, PA (US);
Kent P. Mizgalski, Stahlstown, PA (US);
Mark S. Greenfield, Greensburg, PA (US);
Zhigang Ban, Latrobe, PA (US);
Mark J. Rowe, New Derry, PA (US);
Yixiong Liu, Greensburg, PA (US);
Alfred S. Gates, Jr., Greensburg, PA (US);
Kent P. Mizgalski, Stahlstown, PA (US);
Mark S. Greenfield, Greensburg, PA (US);
Kennametal Inc., Latrobe, PA (US);
Abstract
A coated cutting insert for use in a chip-forming material removal operation wherein the coated cutting insert includes a substrate that has a flank surface and a rake surface and the flank surface intersects the rake surface to form a cutting edge at the intersection. There is a wear-resistant coating scheme that adheres to at least a portion of the substrate. The wear-resistant coating scheme includes one or more coating layers of one or more of alumina, hafnia and zirconia. There is a wear indicating coating that adheres to at least a portion of the wear-resistant coating scheme. The wear indicating coating includes M(OCN) wherein M is selected from the group comprising one or more of the following titanium, hafnium, zirconium, chromium, titanium-aluminum alloy, hafnium-aluminum alloy, zirconium-aluminum alloy, chromium-aluminum alloy, and their alloys, and x>0, y≧0, z≧0 and y+z>0. A method of making a cutting insert with wear indicating coating including the steps of: providing a substrate with an outer alumina coating layer; applying an as-deposited non-wear indicating coating layer to the alumina coating layer; and treating the non-wear indicating coating layer to convert it to a wear indicating coating layer.