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. 01, 2011
Filed:
Nov. 20, 2006
Per Mårtensson, Nacka, SE;
Per Gustafson, Huddinge, SE;
Per Mårtensson, Nacka, SE;
Per Gustafson, Huddinge, SE;
Sandvik Intellectual Property AB, Sandviken, SE;
Abstract
The present invention discloses coated cutting tool inserts particularly useful for turning of nodular cast iron preferably at high speeds, comprising a cemented carbide substrate comprising from about 5 to about 9 wt-% Co and from about 1 to about 5 wt % cubic carbides and balance WC of 86-94 wt-%, and a coating comprising a first layer of TiCNOwith equiaxed grains, a layer of TiCNOwith a thickness of less than about 10 to about 15 μm with columnar grains, a layer of TiCNOwith a thickness of from about 0.1 to about 2 μm and with equiaxed or plate-like grains, a layer of α-AlOwith thickness from about 3 to about 8 μm, an outer layer of a multilayered structure of TiN+TiC with TiC being the outermost layer and a total thickness of from about 0.5 to about 2 μm and wherein the outer coating layer has been removed in the edge line and on the rake face so that the α-AlOlayer is on top along the cutting edge line and on the rake face and the outer TiC layer is the top layer on the flank face.