JPS5566253A - Preparation of carbon brush - Google Patents
Preparation of carbon brushInfo
- Publication number
- JPS5566253A JPS5566253A JP13795978A JP13795978A JPS5566253A JP S5566253 A JPS5566253 A JP S5566253A JP 13795978 A JP13795978 A JP 13795978A JP 13795978 A JP13795978 A JP 13795978A JP S5566253 A JPS5566253 A JP S5566253A
- Authority
- JP
- Japan
- Prior art keywords
- binder
- spherical crystals
- blank
- pressurized
- molded
- 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
Abstract
PURPOSE: To eliminate the need for a binder, to simplify a process of manufacture and to homogenize and stabilize a blank, by pressurizing, molding and baking spherical crystals using as raw material, and by graphitizing them at specified treatment temperatures.
CONSTITUTION: Meso-carbon micro-beads (spherical crystals) obtained by thermally treating petroleum system heavy quality oil and by fractionating mesophase small spheres formed by a solvent can be pressurized and molded without using a binder because they have a pitch-like element besides a carbon material-like element. The spherical crystals are employed as raw material, pressurized and molded without the binder and graphitized at the graphitization treatment temperatures t of 1900°C≤ t≤2800°C, preferably, at 2200°C≤t≤2500°C. Thus, a carbon brush that is extremly homogeneous and stable as a blank is obtained having stable contact with a commutator, etc. and excellent sliding characteristics can be acquired.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13795978A JPS5566253A (en) | 1978-11-10 | 1978-11-10 | Preparation of carbon brush |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13795978A JPS5566253A (en) | 1978-11-10 | 1978-11-10 | Preparation of carbon brush |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5566253A true JPS5566253A (en) | 1980-05-19 |
Family
ID=15210715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13795978A Pending JPS5566253A (en) | 1978-11-10 | 1978-11-10 | Preparation of carbon brush |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5566253A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01321841A (en) * | 1988-06-21 | 1989-12-27 | Hitachi Chem Co Ltd | Electric brush material |
US20120326081A1 (en) * | 2010-03-26 | 2012-12-27 | Toyo Tanso Co., Ltd. | Carbon brush |
-
1978
- 1978-11-10 JP JP13795978A patent/JPS5566253A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01321841A (en) * | 1988-06-21 | 1989-12-27 | Hitachi Chem Co Ltd | Electric brush material |
US20120326081A1 (en) * | 2010-03-26 | 2012-12-27 | Toyo Tanso Co., Ltd. | Carbon brush |
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