GB439058A - Improvements in method of treating a graphite body - Google Patents
Improvements in method of treating a graphite bodyInfo
- Publication number
- GB439058A GB439058A GB16503/34A GB1650334A GB439058A GB 439058 A GB439058 A GB 439058A GB 16503/34 A GB16503/34 A GB 16503/34A GB 1650334 A GB1650334 A GB 1650334A GB 439058 A GB439058 A GB 439058A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graphitized
- graphite
- heated
- graphite body
- treating
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/38—Exhausting, degassing, filling, or cleaning vessels
- H01J9/385—Exhausting vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
- H01J2893/002—Chemical composition and manufacture chemical
- H01J2893/0021—Chemical composition and manufacture chemical carbon
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
A graphite body, e.g. an electrode of an electric discharge device, is heated in an oxidizing atmosphere to a glowing temperature until all non-graphitized carbonaceous materials such as hydrocarbons, are removed. Lamp black or amorphous carbon may be mixed with a suitable binder and graphitized by means of the Acheson process. The graphite may then be pressed to the desired shape and heated in air to 1200 DEG C. by means of induced high-frequency currents, or by the passage of an electric current therethrough, or by the use of an electric resistance or gas-fired muffle furnace. The body is surrounded by a blue glow during the treatment, and emits incandescent particles when all non-graphitized material is removed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US439058XA | 1933-06-02 | 1933-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB439058A true GB439058A (en) | 1935-11-28 |
Family
ID=21929512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16503/34A Expired GB439058A (en) | 1933-06-02 | 1934-06-02 | Improvements in method of treating a graphite body |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE666635C (en) |
GB (1) | GB439058A (en) |
-
1934
- 1934-06-02 DE DEH140246D patent/DE666635C/en not_active Expired
- 1934-06-02 GB GB16503/34A patent/GB439058A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE666635C (en) | 1938-10-24 |
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