Title:
靭性を要する短穴ドリル加工用超硬合金インサート
Document Type and Number:
Japanese Patent JP2008512262
Kind Code:
A
Abstract:
The present invention relates to a coated cutting insert with excellent toughness properties particularly useful for toughness demanding short hole drilling in low alloy and stainless steels and a method of making the same. The inserts comprise a substrate and a coating. The substrate comprises WC, from about 8 to about 11 wt-% Co and from about 0.2 to about 0.5 wt-% Cr with an average WC-grain size of from about 0.5 to about 1.5 mum and a CW-ratio of from about 0.80 to about 0.90. The coating comprises a laminar, multilayered structure of TiN+Ti1-xAlxN+TiN+Ti1-xAlxN+TiN . . . in polycrystalline, non-repetitive form, with x being from about 0.4 to about 0.6 with a thickness of the individual TiN-or Ti1-xAlxN-layers of from about 1 to about 30 nm varying essentially at random and with a total thickness of the multilayered coating of from about 1 to about 5 mum. The layers are deposited using arc evaporation technique.
Inventors:
Earl Glenn, Mats
Ogren, Torbjorn
Kale Glen, Yang
Ogren, Torbjorn
Kale Glen, Yang
Application Number:
JP2007531136A
Publication Date:
April 24, 2008
Filing Date:
January 26, 2006
Export Citation:
Assignee:
Sandvik Intellectual Property Actie Borag
International Classes:
B23B51/00; C22C29/08; C23C14/06; C22C1/05
Domestic Patent References:
| JPH07205361A | 1995-08-08 | |||
| JP2001521447A | 2001-11-06 | |||
| JPH0929512A | 1997-02-04 | |||
| JPH0598385A | 1993-04-20 | |||
| JP2000233320A | 2000-08-29 | |||
| JPH09209123A | 1997-08-12 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Hiroshi Kamematsu
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Hiroshi Kamematsu