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:
Jul. 26, 2011
Filed:
Jul. 07, 2008
Jenni Zackrisson, Fagersta, SE;
Silvia Dahlund, Soderbarke, SE;
Tommy Larsson, Angelsberg, SE;
Seco Tools AB, Fagersta, SE;
Abstract
The present invention concerns a cutting tool insert for turning of steel at high cutting speeds. The cutting tool insert comprises a (006) textured α-AlOcoated cemented carbide grade. The cemented carbide body has about 4.5-6.5 wt-% Co and about 3-10 wt-% cubic carbide forming metals and an S-value of about 0.77-0.92 and a coercivity of about 10-20 kA/m. The α-AlOlayer has a thickness ranging from about 7 to 12 μm and is composed of columnar grains having a length/width ratio from about 2 to 12 and is deposited on an MTCVD Ti(C,N) layer having a thickness from about 4 to 12 μm. The alumina layer is characterized by a pronounced (006) growth texture. The alumina layer is the uppermost layer and is wet-blasted having an Rvalue of less than 1 μm, giving the tool a black and shiny appearance.