CH111867A - Process for manufacturing electrical heating and resistance rods. - Google Patents
Process for manufacturing electrical heating and resistance rods.Info
- Publication number
- CH111867A CH111867A CH111867DA CH111867A CH 111867 A CH111867 A CH 111867A CH 111867D A CH111867D A CH 111867DA CH 111867 A CH111867 A CH 111867A
- Authority
- CH
- Switzerland
- Prior art keywords
- rods
- electrical heating
- resistance rods
- manufacturing electrical
- resistance
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- -1 lobalt Chemical compound 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ceramic Products (AREA)
Description
Verfahren zum Herstellen elektrischer Heiz- und Widerstandsstäbe. a Es ist bereits bekannt, für elektrische Öfen Heizstäbe dadurch zu erzeugen, dass man einem Karbid, wie zum Beispiel Silizium karbid, ein Metall mit amorpher Kohle hin zufügt, diese Masse mit bekannten Binde mitteln bindet, presst und glüht. In diesem Falle übernimmt aber das metallische Si lizium nicht die Leitfähigkeit, sondern soll in Verbindung mit der hinzugefügten Kohle ebenfalls Siliziumkarbid bilden und so den Stab zusammenschweissen. Es ist also hier gleichsam als Backmaterial benützt.
Es ist auch schon bekannt, dass man ge wisse Eisenverbindungen mit feuerfestem Ton mischt, presst und glüht. Diese Eisenlegierun- ,frfn haben aber ziemlich niederen Schmelz punkt, und zwar keinesfalls über 1200, so class sie für Heizstäbe ungeeignet sind.
Bei dem Verfahren zum Herstellen elek trischer Heiz- und Widerstandsstäbe gemäss der Erfindung wird von der Verwendung von Siliziumkarbid abgegangen. Gemäss der Er findung wird Metall mit einem Schmelzpunkt von über<B>1300'</B> mit einem Bindemittel, welches aus einem schwer- oder unschmelz- baren Stoff besteht, der nicht ein Karbid darstellt, gemischt, gepresst und dann geglüht.
Als Metall kann zum Beispiel Osmium, Uran, Ruthenium, Rhodium, Palladium, Thorium, Tantal, Nickel, Chrom. Zirkon, Vanadium, lobalt, Molybdän und als Bindemittel kön nen Chemikalien oder Mineralien, wie zum Beispiel Asbest, Magnesit, Zirkonerde, Kie- selgur usw., verwendet werden:
Dabei haben diese letzteren Beimischungen als Wider standsmassen zu dienen, während der Metall zusatz, je nach dessen ,Art und der Menge desselben, die elektrische Leitfähigkeit be stimmt.
Besonderes Augenmerk kann auch darauf gerichtet werden, dass solche Metalle gewählt werden, die in der Hitze schwer- oder un- oxydierbar sind.
Die Herstellung der beschriebenen Heiz und Widerstandsstäbe ist viel leichter als die Herstellung der Stäbe aus Siliziumkarbid. Die nach dem beschriebenen Verfahren her gestellten Stäbe greifen auch nicht so die Maschinen an wie Stäbe aus Siliziumkarbid, das bekanntlich eines der schärfsten Schleif- mittel ist. Ferner kann von vorneherein der Widerstand rechnerisch festgelegt werden, was bei den- alten Siliziumkarbidstäben nicht der Fall war. fluch haben sie eine viel längere Lebensdauer als Karborundumstäbe.
Process for manufacturing electrical heating and resistance rods. a It is already known to produce heating rods for electric furnaces by adding a metal with amorphous carbon to a carbide such as silicon carbide, binding this mass with known binding agents, pressing and annealing. In this case, however, the metallic silicon does not take over the conductivity, but should also form silicon carbide in conjunction with the added carbon and thus weld the rod together. So it is used here as a baking material.
It is also already known that certain iron compounds are mixed, pressed and glowed with refractory clay. These iron alloys, however, have a rather low melting point, and by no means more than 1200, as they are unsuitable for heating rods.
In the method for producing electrical heating and resistance rods according to the invention, the use of silicon carbide is abandoned. According to the invention, metal with a melting point of over <B> 1300 '</B> is mixed, pressed and then annealed with a binder which consists of a non-meltable or infusible material that is not a carbide.
As a metal, for example, osmium, uranium, ruthenium, rhodium, palladium, thorium, tantalum, nickel, chromium. Zirconium, vanadium, lobalt, molybdenum and chemicals or minerals such as asbestos, magnesite, zircon earth, kieselguhr, etc., can be used as binders:
The latter admixtures have to serve as resistance masses, while the metal additive, depending on its type and amount, determines the electrical conductivity.
Special attention can also be paid to choosing metals that are difficult to oxidize or non-oxidizable in the heat.
The production of the heating and resistance rods described is much easier than the production of the rods from silicon carbide. The rods produced using the method described do not attack the machines in the same way as rods made of silicon carbide, which is known to be one of the hottest abrasives. Furthermore, the resistance can be calculated from the outset, which was not the case with the old silicon carbide rods. curse they have a much longer lifespan than carborundum rods.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE111867X | 1924-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH111867A true CH111867A (en) | 1925-09-16 |
Family
ID=5652699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH111867D CH111867A (en) | 1924-12-04 | 1925-01-13 | Process for manufacturing electrical heating and resistance rods. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH111867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290861B (en) * | 1964-03-26 | 1969-03-13 | Max Planck Inst Eisenforschung | Use of a mixture of chromium (III) oxide and chromium |
-
1925
- 1925-01-13 CH CH111867D patent/CH111867A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1290861B (en) * | 1964-03-26 | 1969-03-13 | Max Planck Inst Eisenforschung | Use of a mixture of chromium (III) oxide and chromium |
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