EP0269525A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surface coated carbo-nitride titanium-base cermet material for inserts of high-speed cutting tools
Assignee: Mitsubishi Materials Corp
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Filing: 1987-11-24
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Granted: —
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Expires: 2007-11-24
Abstract
Abstract A surface coated TiCN-base cermet material for inserts of cutting tools, which possesses excellent wear resistance as well as excellent chipping resistance and therefore can exhibit excellent cutting performance over a long period of use when used as a cutting insert in high speed cutting of steel or the like. The cermet material consists essentially of a substrate or a TiCN-base cermet, and a hard surface layer formed over surfaces of the substrate, the hard surface layer being formed of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, or a composite layer of at least two compounds selected from the same group, the hard surface layer having a mean thickness within a range from 0.5 to 10 micrometers. The hard surface layer has a mean grain size of not more than 0.05 micrometers.
Inventors
- 👤 Hironori C/O Tokyo Seisakusho Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 23:29
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/04; C23; C23C; C23C14/00; C23C14/06; C23C14/0635; C23C14/0641; C23C14/0664; C23C30/00; C23C30/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
Surface coated TiCN-base cermet material for inserts of cutting tools, consisting essentially of : (1) a substrate of a TiCN-base cermet ; and (2) a hard surface layer formed over surfaces of said substrate, said hard surface layer being formed of one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, said hard surface layer having a mean thickness within a range from 0.5 to 10 micrometers, characterized in that said hard surface layer has a mean grain size of not more than 0.05 micrometers.
Claim 2
Dependent Claim
107 words
Surface coated TiCN-base cermet material for inserts of cutting tools, consisting essentially of : (1) a substrate of a TiCN-base cermet ; and (2) a hard surface layer formed over surfaces of said substrate, said hard surface layer being formed of one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, said hard surface layer having a mean thickness within a range from 0.5 to 10 micrometers, characterized in that said hard surface layer has a mean grain size of not more than 0.05 micrometers.
Claim 3
Dependent Claim
26 words
Surface coated TiCN-base cermet material as claimed in claim 1, characterized in that said hard surface layer has been formed by a physical vapor deposition method.
Claim 4
Dependent Claim
149 words
Method of manufacturing a surface coated TiCN-base cermet material for inserts of cutting tools, comprising the steps of : (a) preparing a substrate of a TiCN-base cermet ; and (b) coating over surfaces of said substrate a hard surface layer formed of one of a single layer of one compound selected from the groups consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, by means of a physical vapor deposition, characterized by the following conditions : Reaction Temperature : 550 - 700°C ; Voltage Applied on Substrate : - 700 - -100 volts ; and Pressure of Reaction Atmosphere : 5 × 10⁻³ - 5 × 10⁻⁵ torr (0.6-0.006 Pa), whereby said hard surface layer has a mean thickness within a range from 0.5 to 10 micrometers and a mean grain size of not more than 0.05 micrometers.
Claim 5
Dependent Claim
149 words
Method of manufacturing a surface coated TiCN-base cermet material for inserts of cutting tools, comprising the steps of : (a) preparing a substrate of a TiCN-base cermet ; and (b) coating over surfaces of said substrate a hard surface layer formed of one of a single layer of one compound selected from the groups consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, by means of a physical vapor deposition, characterized by the following conditions : Reaction Temperature : 550 - 700°C ; Voltage Applied on Substrate : - 700 - -100 volts ; and Pressure of Reaction Atmosphere : 5 × 10⁻³ - 5 × 10⁻⁵ torr (0.6-0.006 Pa), whereby said hard surface layer has a mean thickness within a range from 0.5 to 10 micrometers and a mean grain size of not more than 0.05 micrometers.
References Cited (Backward Citations)
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