JPS5645332A - Preparation of sintered body of high hardness for cutting - Google Patents
Preparation of sintered body of high hardness for cuttingInfo
- Publication number
- JPS5645332A JPS5645332A JP11904579A JP11904579A JPS5645332A JP S5645332 A JPS5645332 A JP S5645332A JP 11904579 A JP11904579 A JP 11904579A JP 11904579 A JP11904579 A JP 11904579A JP S5645332 A JPS5645332 A JP S5645332A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- boron nitride
- preparation
- base bodies
- crystalline boron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Laminated Bodies (AREA)
- Ceramic Products (AREA)
- Powder Metallurgy (AREA)
Abstract
PURPOSE: To secure firm fixation of a polycrystalline sintered body with homogeneity by enabling uniform heating and uniform pressurizing especially when extra- high pressure and temperature are given in the preparation of the sintered body of high hardness for cutting obtained by fixing a polycrystalline sintered substance such as boron nitride of cubic crystal to a part of a substrate such as carbide alloy.
CONSTITUTION: Inside a vessel formed of the metal having high melting point, such as Mo, are arranged alternately base bodies 11 formed of carbide alloy wherein carbon rings 8 provided with a pressure medium 7 composed of salt or hexagonally- crystalline boron nitride are put in the inner-peripheral part thereof and hard particles 10 such as particles of cubically-crystalline boron nitride in the central concave part 9a thereof. In addition, the carbon rings 8 are arranged on both end sides of the vessel, and a direct-resistance heating circuit is constituted by the rings 8, the base bodies 11 and the metal plate 12 having high melting point, whereby the sintering under extra-high pressure is made possible in a short time. Since a polycrystalline sintered body such as the cubically-crystalline boron nitride is fixedly formed on a part of the base bodies 11 monolithically in this way, the sintered body produced is made firm, while the time for preparation can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11904579A JPS5645332A (en) | 1979-09-17 | 1979-09-17 | Preparation of sintered body of high hardness for cutting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11904579A JPS5645332A (en) | 1979-09-17 | 1979-09-17 | Preparation of sintered body of high hardness for cutting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5645332A true JPS5645332A (en) | 1981-04-25 |
Family
ID=14751555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11904579A Pending JPS5645332A (en) | 1979-09-17 | 1979-09-17 | Preparation of sintered body of high hardness for cutting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5645332A (en) |
-
1979
- 1979-09-17 JP JP11904579A patent/JPS5645332A/en active Pending
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