DE482455C - Process for the production of heating rods which contain silicon and carbon as main components - Google Patents
Process for the production of heating rods which contain silicon and carbon as main componentsInfo
- Publication number
- DE482455C DE482455C DES83863D DES0083863D DE482455C DE 482455 C DE482455 C DE 482455C DE S83863 D DES83863 D DE S83863D DE S0083863 D DES0083863 D DE S0083863D DE 482455 C DE482455 C DE 482455C
- Authority
- DE
- Germany
- Prior art keywords
- carbon
- silicon
- production
- main components
- different
- 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
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
Description
Verfahren zur Herstellung von Heizstäben, die Silicium und Kohlenstoff als Hauptbestandteil enthalten Siliciumcarbidhaltige Widerstandskörper werden in der Weise hergestellt, daß Körper aus Kohle oder aus Siliciumcarbid oder Körper, die Kohle oder Silicium und Kohle enthalten, durch Hindurchleiten eines elektrischen Stromes in einer Bettung erhitzt werden, die Siliciumdämpfe erzeugt. Der Silicim ngehalt und die sonstige Beschaffenheit der Körper ist abhängig von der Dauer der Erhitzung, von der Erhitzungstemperatur und von der Art der Bettung.Process for the manufacture of heating rods containing silicon and carbon Resistance bodies containing silicon carbide are contained as the main component in made in such a way that bodies of carbon or silicon carbide or bodies, containing carbon or silicon and carbon, by passing an electric through it Stromes are heated in a bed that generates silicon vapors. The Silicim Content and the other nature of the body depends on the duration of the Heating, the heating temperature and the type of bedding.
Es ist an sich bekannt, Körper herzustellen, die an verschiedenen Stellen verschiedenen Siliciumgehalt -und verschiedene Leitfähigkeit besitzen. Erfindungsgenläß wird der Stab an den Stellen, die verschiedene Eigenschaft-en erhalten sollen, in entsprechend verschiedene Bettungsmischungen eingebettet, insbesonderg in dem Sinne, daß die Teile, die die höhere Leitfähigkeit erhalten sollen (z. B. die Enden der Stäbe) in eine Mischung eingebracht werden, die größere Mengen von Silicium entwickelt als die Bettung der anderen Stäbe. Es wird hierdurch ermöglicht, daß die Stäbe in einem einzigen Arbeitsgang genau so wie normale Stäbe hergestellt werden können, wodurch große'Gleichmäßigkeit und'Güte der Endprodukte gewährleistet ist.It is known per se to produce bodies that are attached to various Make different silicon content - and have different conductivity. Invention Genläß the rod is placed in the places that are to receive various properties different bedding mixes embedded, in particular in the sense, that the parts that are to receive the higher conductivity (e.g. the ends of the Rods) are introduced into a mixture that develops larger amounts of silicon than the bedding of the other bars. It is hereby made possible that the rods in in a single operation just like normal bars can be produced, whereby great uniformity and quality of the end products is guaranteed.
Die Menge von Siliciumdampf, die unter sonst gleichen Bedingungen (Druck, Temperatur und Erhitzungsdaner) entwickelt wird, hängt wesentlich von der Zusammensetzung der Bettungsmasse ab. Man kann heispielsweise eine Massel die mehr Siliciumdampf entwickelt, dadurch bekommen, daß man in der sonst üblichen Quarz-Kohle-Mischung die Kohle ganz oder teilweise durch Siliciumcarbid ersetzt. Am größten wird dann die Siliciumdampfmenge sein, wenn das Mischungsverhältnis so gewählt ist, daß es den sich abspielenden Reaktionen entspricht. Eine geeignete Mischung besteht z. B. aus gleichen Teilen von Siliciumcarbid und Kieselsäure, oder einer Mischung, -die etwa bis zu 50 % mehr Carbid als Kieselsäure enthält.The amount of silicon vapor produced, all other things being equal (Pressure, temperature and heating) depends essentially on the Composition of the bedding mass. For example, you can get a pig the more Silicon vapor is developed, obtained by using the otherwise usual quartz-charcoal mixture all or part of the carbon is replaced by silicon carbide. It will be greatest then be the amount of silicon vapor when the mixing ratio is chosen so that it corresponds to the reactions taking place. A suitable mixture consists e.g. B. from equal parts of silicon carbide and silica, or a mixture, -that contains up to 50% more carbide than silica.
Es hat sich gezeigt, daß sich bei genügend scharfem Abgrenzen verschiedener Bettungsmassen gegen-einander die mit ihnen in B#erührung stehen-den Teile der Heizstäbe sehr scharf in ihren Eigenschaften voneinander unterscheiden, -wenn im übrigen die in dieser Weise eingebetteten Stäbe auf gleiche Temperatur und gleiche Dauer erhitzt werden.It has been shown that with sufficiently sharp delimitation of different bedding masses from one another, the parts of the heating rods that are in contact with them differ very sharply in their properties - if the rest of the rods embedded in this way are at the same temperature and heated for the same duration.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES83863D DE482455C (en) | 1928-01-28 | 1928-01-28 | Process for the production of heating rods which contain silicon and carbon as main components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES83863D DE482455C (en) | 1928-01-28 | 1928-01-28 | Process for the production of heating rods which contain silicon and carbon as main components |
Publications (1)
Publication Number | Publication Date |
---|---|
DE482455C true DE482455C (en) | 1929-09-14 |
Family
ID=7511307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES83863D Expired DE482455C (en) | 1928-01-28 | 1928-01-28 | Process for the production of heating rods which contain silicon and carbon as main components |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE482455C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2910151A1 (en) * | 1979-03-15 | 1980-10-02 | Didier Werke Ag | ELECTRIC HEATING CONDUCTOR, YOUR PREPARATION, YOUR USE IN A HEATABLE WEARING PART AND A METHOD FOR PRODUCING SUCH WEARING PARTS WITH THE HEATING CONDUCTOR |
-
1928
- 1928-01-28 DE DES83863D patent/DE482455C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2910151A1 (en) * | 1979-03-15 | 1980-10-02 | Didier Werke Ag | ELECTRIC HEATING CONDUCTOR, YOUR PREPARATION, YOUR USE IN A HEATABLE WEARING PART AND A METHOD FOR PRODUCING SUCH WEARING PARTS WITH THE HEATING CONDUCTOR |
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