Title:
COATED CERAMIC CUTTING INSERT AND METHOD OF MAKING THE SAME
Document Type and Number:
WIPO Patent Application WO/2011/112334
Kind Code:
A3
Abstract:
A coated ceramic cutting insert (20) for removing material from a workpiece, as well as a method for making the same, that includes a ceramic substrate ((40, 40A, 40B) with a rake surface (28) and at least one flank surface (30) wherein a cutting edge (32) is at the juncture therebetween. A wear-resistant coating scheme (50, 82) that includes at least one exposed alumina coating layer (50, 60, 62, 82) which exhibits a blasted stress condition ranging between about 50 MPa (tensile stress) and about - 2GPa (compressive) as measured by XRD using the Psi tilt method and the (024) reflection of alumina. The exposed alumina coating layer (50, 60, 62, 82) is the result of wet blasting a titanium-containing outer coating layer (54, 54A, 54B) region from the surface of the alumina-containing base coating layer region (50, 50A, 50B).
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Inventors:
BAN ZHIGANG (US)
GATES JR ALFRED (US)
LIU YIXIONG (US)
WU JIE (US)
GATES JR ALFRED (US)
LIU YIXIONG (US)
WU JIE (US)
Application Number:
PCT/US2011/025165
Publication Date:
December 29, 2011
Filing Date:
February 17, 2011
Export Citation:
Assignee:
KENNAMETAL INC (US)
BAN ZHIGANG (US)
GATES JR ALFRED (US)
LIU YIXIONG (US)
WU JIE (US)
BAN ZHIGANG (US)
GATES JR ALFRED (US)
LIU YIXIONG (US)
WU JIE (US)
International Classes:
B23B27/14; B23B27/16; C04B35/01; C23C16/30
Domestic Patent References:
| WO2009005924A2 | 2009-01-08 |
Foreign References:
| EP2058287A1 | 2009-05-13 | |||
| KR20060109851A | 2006-10-23 | |||
| KR20090007223A | 2009-01-16 |
Attorney, Agent or Firm:
GORDON, Matthew W. et al. (1600 Technology WayP.O. Box 23, Latrobe Pennsylvania, US)
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