Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COATED PCBN CUTTING INSERT, COATED PCBN CUTTING TOOL USING SUCH COATED PCBN CUTTING INSERT, AND METHOD FOR MAKING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/112335
Kind Code:
A3
Abstract:
A coated polycrystalline cubic boron nitride cutting insert (28, 58), which has a polycrystalline cubic boron nitride substrate (70, 126) with a cutting edge (34, 66). A wear-resistant coating scheme (74, 74A) is on the polycrystalline cubic boron nitride substrate. The wear-resistant coating scheme includes an inner coating layer region (94, 150) and at least one exposed alumina coating layer (84, 84A, 138). The exposed alumina coating layer (84, 84A, 138) exhibiting a post-blasted stress condition with stress ranging between about 50 MPa (tensile stress) and about - 2GPa (compressive stress) as measured by XRD using the Psi tilt method and the (024) reflection of alumina. The exposed coating layer (84, 84A, 138) is the result of wet blasting an outer titanium-containing coating layer (86, 88, 140, 142) from the surface of the alumina-containing coating layer region (84, 138).

Inventors:
BAN ZHIGANG (US)
LIU YIXIONG (US)
Application Number:
PCT/US2011/025179
Publication Date:
December 22, 2011
Filing Date:
February 17, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KENNAMETAL INC (US)
BAN ZHIGANG (US)
LIU YIXIONG (US)
International Classes:
B23B27/14; B23B27/16; B32B9/00; C04B41/89; C23C16/40; C23C28/00
Foreign References:
EP1806193A12007-07-11
KR20060129432A2006-12-15
JP2002543993A2002-12-24
JP2007001007A2007-01-11
Attorney, Agent or Firm:
GORDON, Matthew, W. et al. (1600 Technology WayP.O. Box 23, Latrobe PA, US)
Download PDF: