公开(公告)号：WO1992021472A1

公开(公告)日：1992-12-10

申请号：PCT/US1992002791

申请日：1992-04-01

Applicant: KENNAMETAL, INC.

Inventor： KENNAMETAL, INC. ,  SANTHANAM, Anakkavur, T. ,  GODSE, Rajendra, V.

IPC: B23C05/20

CPC classification number: B23C5/207 ,  B23C2200/201 ,  B23C2200/205 ,  C23C30/005 ,  Y10T407/27

Abstract: A coated indexable cutting insert (1) for wet and dry milling of cast irons is provided. The substrate of the insert (1) is composed of a cemented tungsten carbide based composition containing about 5.7 to about 6.4 weight percent cobalt and about 2.9 to about 3.6 weight percent tantalum. The coating includes two coatings of differing composition. The first coating is selected from titanium carbide, titanium carbonitride, and titanium nitride. The second coating is alumina.

公开(公告)号：WO1992005009A1

公开(公告)日：1992-04-02

申请号：PCT/US1991003397

申请日：1991-05-15

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  SANTHANAM, Anakkavur, T. ,  GODSE, Rajendra, V. ,  GRAB, George, P. ,  QUINTO, Dennis, T. ,  UNDERCOFFER, Kenneth, E. ,  JINDAL, Prem, C.

IPC: B23P15/28

CPC classification number: C23C28/044 ,  B22F2998/00 ,  B23B27/148 ,  B23P15/28 ,  C22C29/06 ,  C23C28/048 ,  C23C30/005 ,  Y10T407/27 ,  Y10T428/31678 ,  B22F2207/03

Abstract: Provided is a coated cutting tool (10) having a binder enriched substrate (18). The coating includes at least one chemical vapor deposited (CVP) layer (30) and at least one physical vapor deposited (PVD) layer (34). The PVD layer contains residual compressive stresses.

公开(公告)号：WO1992005296A1

公开(公告)日：1992-04-02

申请号：PCT/US1991003396

申请日：1991-05-15

Applicant: KENNAMETAL INC.

Inventor： KENNAMETAL INC. ,  SANTHANAM, Anakkavur, T. ,  QUINTO, Dennis, T. ,  GODSE, Rajendra, V. ,  JINDAL, Prem, C. ,  UNDERCOFFER, Kenneth, E.

IPC: C23C14/00

CPC classification number: C23C28/044 ,  B23B27/148 ,  C23C14/0641 ,  C23C14/0664 ,  C23C16/34 ,  C23C16/36 ,  Y10T407/23 ,  Y10T407/27

Abstract: Provided is a coated cutting tool (10) having a coating and a substrate. The coating includes at least one chemical vapor deposited (CVD) layer and at least one physical vapor deposited (PVD) layer. The outermost layer of the coating is a PVD layer, containing residual compressive stresses. The substrate is a composite having hard refractory grains bonded together by a binder material.