DE239877C - - Google Patents
Info
- Publication number
- DE239877C DE239877C DENDAT239877D DE239877DA DE239877C DE 239877 C DE239877 C DE 239877C DE NDAT239877 D DENDAT239877 D DE NDAT239877D DE 239877D A DE239877D A DE 239877DA DE 239877 C DE239877 C DE 239877C
- Authority
- DE
- Germany
- Prior art keywords
- mass
- production
- metal
- tungstic acid
- yellow
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- CMPGARWFYBADJI-UHFFFAOYSA-L Tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atoms Chemical class [H]* 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 150000003658 tungsten compounds Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H01K3/02—Manufacture of incandescent bodies
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-JVr 239877 — KLASSE 21/. GRUPPE -JVr 239877 - CLASS 21 /. GROUP
Die gebräuchlichen Verfahren zur Herstellung preßbarer Massen für Metallglühfäden durch Reduktion der Wolframverbindungen mit verschiedenartigen Reduktionsmitteln, z. B. Kohle, Zink, Aluminium, zeigen den großen Übelstand, daß die reduzierten Massen einer unter Umständen sehr langwierigen und für die Beschaffenheit des Metalles schädlichen Reinigungsmethode zu unterwerfen sind, dieThe usual processes for the production of pressable masses for metal filaments by reducing the tungsten compounds with various reducing agents, e.g. B. Coal, zinc, and aluminum show the great disadvantage that the reduced masses of one may be very tedious and harmful to the nature of the metal Cleaning method are subject to that
ίο die Beseitigung der Reaktionskomponenten bezweckt. ίο the purpose of eliminating the reaction components.
_ Gemäß vorliegender Erfindung gelingt es,_ According to the present invention, it is possible
diesen Übelstand völlig zu beheben und dabei eine Masse zu erhalten, die der auf anderen Wegen gewonnenen an Reinheit und Homogenität der Struktur überlegen ist und durch die man ein ganz lockeres Metallprodukt von voluminöser Struktur erhält, das besonders zur Herstellung von Glühfaden geeignet ist.to remedy this deficiency completely while maintaining a mass similar to that of others Because of its purity and homogeneity the structure is superior and by which you get a very loose metal product with a voluminous structure, that special is suitable for the production of filament.
Dabei ist es jedoch von Wichtigkeit, eine reine und besonders trockene Wolframsäure von großem Feinheitsgrade und Phosphor von großer Feinheit zu verwenden. Die beiden Komponenten werden durch Mischen in innigen Kontakt gebracht. Die Erhitzung des Gemisches erfolgt in einer indifferenten Gasatmosphäre oder im Vakuum, wodurch lediglich bezweckt wird, eine Oxydation der zu erhaltenden Metallmasse zu vermeiden. Dabei ist das schützende, indifferente Gas, beispielsweise Wasserstoff, ausdrücklich von dem Innern der Masse selbst fern zu halten, da die Gegenwart eines derartigen Gases von Einfluß auf die Struktur der Masse in einem der Lockerheit entgegenwirkenden Sinne ist.However, it is important to use a pure and particularly dry tungstic acid of great fineness and phosphorus of great fineness. The two Components are brought into intimate contact by mixing. The heating of the Mixing takes place in an inert gas atmosphere or in a vacuum, whereby only The aim is to avoid oxidation of the metal mass to be obtained. Included is the protective, indifferent gas, e.g. hydrogen, expressly of the Inside the mass itself to keep away, since the presence of such a gas of Influence on the structure of the mass in a sense that counteracts the looseness.
Die Reinigung des erhaltenen Produktes geschieht in einfacher Weise durch kurzes Abschlämmen mit Wasser, um die Hauptmenge des noch vorhandenen Phosphors in Gestalt von Phosphorsäure zu, entfernen. Die sox erhaltene Masse wird in üblicher Weise unter Zusatz eines Bindemittels zu Fäden gepreßt und durch den Glühprozeß stromleitend gemacht. Die Fäden werden in bekannter Weise elektrisch geglüht, wobei die letzten Reste noch etwa vorhandenen Phosphors entweichen. The product obtained is cleaned in a simple manner by briefly desludging with water in order to remove most of the remaining phosphorus in the form of phosphoric acid. The mass so obtained is pressed x in the customary manner under addition of a binder to form threads and made to conduct current through the annealing process. The threads are electrically annealed in a known manner, with the last remnants of any remaining phosphorus escaping.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE239877C true DE239877C (en) |
Family
ID=499283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT239877D Active DE239877C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE239877C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509192B1 (en) * | 1992-02-24 | 2003-01-21 | Coulter International Corp. | Quality control method |
-
0
- DE DENDAT239877D patent/DE239877C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6509192B1 (en) * | 1992-02-24 | 2003-01-21 | Coulter International Corp. | Quality control method |
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