DE287613C - - Google Patents
Info
- Publication number
- DE287613C DE287613C DENDAT287613D DE287613DA DE287613C DE 287613 C DE287613 C DE 287613C DE NDAT287613 D DENDAT287613 D DE NDAT287613D DE 287613D A DE287613D A DE 287613DA DE 287613 C DE287613 C DE 287613C
- Authority
- DE
- Germany
- Prior art keywords
- ramming
- carbon electrodes
- electrode
- layer
- electrodes
- 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.)
- Active
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000003779 heat-resistant material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000011253 protective coating Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/06—Electrodes
- H05B7/08—Electrodes non-consumable
- H05B7/085—Electrodes non-consumable mainly consisting of carbon
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Discharge Heating (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMTPATENT OFFICE
Die gewöhnlichen Kohlenelektroden für elektrische Öfen leiden bekanntlich zufolge der geringen Widerstandsfähigkeit der Materialien, aus denen man dieselben herzustellen pflegt, stark durch Abbrand, außerdem bilden sich bei denselben durch ungleichmäßige Erhitzung und Abkühlung von der Oberfläche aus leicht Sprünge und Risse, die ein Zerbrechen der Elektroden zur Folge haben können.The ordinary carbon electrodes for electric furnaces are known to suffer from poor ones Resistance of the materials from which they are usually made, strong through burning, in addition they are formed through uneven heating and cooling of the surface from easily cracks and cracks that cause breakage of the Electrodes.
ίο Gemäß der Erfindung werden beide Übelstände dadurch behoben, daß beim Aufstampfen der Elektroden rings an die inneren Wandungen des Stampfzylinders eine Schicht eines gegen Hitzeeinwirkung widerstandsfähigeren, dem Brüchigwerden weniger ausgesetzten Materials (vorzugsweise Graphit mit einem geeigneten Bindemittel) angelegt wird, welche das gewöhnliche Elektrodenmaterial, den Kern, nach Art eines Schutzmantels umhüllt. Durch das gemeinsame Aufstampfen und Pressen beider Materialien wird ein fester Zusammenhalt derselben erzielt. Ein besonderer Vorteil der neuen Elektrode ist noch darin zu erblicken, daß ihre Herstellung kaum mehr Zeit in Anspruch nimmt als die Herstellung der gewöhnlichen Elektroden.ίο According to the invention, both evils remedied by the fact that when the electrodes are stamped on all around the inner walls of the ramming cylinder a layer of a layer that is more resistant to the effects of heat, less exposed material to brittle (preferably graphite with a suitable Binder), which contains the usual electrode material, the core, enveloped in the manner of a protective jacket. By stamping and pressing together Both materials are firmly held together. A particular advantage The new electrode can still be seen in the fact that its manufacture is scarcely any more time takes up as the manufacture of ordinary electrodes.
Die Dicke des Graphitmantels soll vorzugsweise etwa 1Z7 des gesamten Durchmessers der Elektrode betragen; je nach dem Verwendungszweck können der Umhüllungsmasse Zusätze, wie Metalloxyde, Metallkarbide oder Metalle, zugefügt werden. An die Stelle des Graphitgemisches könnte auch ein anderer Stoff genügender Festigkeit, welcher den im Ofenbetrieb auftretenden chemischen und Hitzeeinwirkungen hinreichend gut,widersteht, treten. Der Elektrode kann im Querschnitt beliebige Form (Kreisform, Rechteckform usw.) gegeben werden. Im Falle der Rechteckquerschnittsform könnte z. B. zur Erhöhung der Bruchfestigkeit eine Schicht des widerstandsfähigen Materials die Elektrode, in der Längsmittelebene liegend, rippen artig durchsetzen. The thickness of the graphite jacket should preferably be about 1 Z 7 of the total diameter of the electrode; Depending on the intended use, additives such as metal oxides, metal carbides or metals can be added to the coating compound. Instead of the graphite mixture, another material of sufficient strength, which withstands the chemical and heat effects that occur in the furnace, could also be used. The cross-section of the electrode can be given any shape (circular, rectangular, etc.). In the case of the rectangular cross-sectional shape, for. B. to increase the breaking strength, a layer of the resistant material, the electrode, lying in the longitudinal center plane, enforce rib-like.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE287613C true DE287613C (en) |
Family
ID=542820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT287613D Active DE287613C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE287613C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1265028B (en) * | 1964-10-27 | 1968-03-28 | Hagenburger Chamotte Ton | Process for the manufacture of carbon-containing chamotte products by firing |
-
0
- DE DENDAT287613D patent/DE287613C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1265028B (en) * | 1964-10-27 | 1968-03-28 | Hagenburger Chamotte Ton | Process for the manufacture of carbon-containing chamotte products by firing |
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