DE854828C - Process for the production of insulation layers - Google Patents
Process for the production of insulation layersInfo
- Publication number
- DE854828C DE854828C DEL6146A DEL0006146A DE854828C DE 854828 C DE854828 C DE 854828C DE L6146 A DEL6146 A DE L6146A DE L0006146 A DEL0006146 A DE L0006146A DE 854828 C DE854828 C DE 854828C
- Authority
- DE
- Germany
- Prior art keywords
- production
- insulation layers
- addition
- insulation
- layer
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 238000009413 insulation Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- 238000007792 addition Methods 0.000 claims 1
- 150000004679 hydroxides Chemical class 0.000 claims 1
- 239000000020 Nitrocellulose Substances 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
- H01J19/44—Insulation between electrodes or supports within the vacuum space
Landscapes
- Solid Thermionic Cathode (AREA)
Description
Verfahren zur Herstellung von Isolationsschichten Die Erfindung richtet sich auf ein neuartiges Herstellungsverfahren von Isolationsschichten, z. B. für Heizwendeln, insbesondere aus Aluminium-, Magnesium- oder Berylliumoxyd, beispielsweise zur Verwendung an Heizwendeln für Rundfunk-und Kathodenstrahlröhren.Process for the production of insulation layers The invention is directed focus on a new manufacturing process for insulating layers, e.g. B. for Heating coils, in particular made of aluminum, magnesium or beryllium oxide, for example for use on heating coils for radio and cathode ray tubes.
Es ist allgemein üblich, die Isolationsschichten von HeizNvendeln durch Sprühen mittels Sprühpistole oder durch Eintauchen in entsprechend zähflüssige Pasten aufzubringen. Als Bindemittel dient dabei ein Zusatz von Nitrocellulose (Kollodiumlösung) oder ein etwa io%iger Aluminiumnitratzusatz. Die Nitrocellulose hat den Nachteil, daß der bei dem Sinterprozeß zunächst entstehende Kohlenstoff evtl. vor seiner Verbrennung mit dem Wolframdralit der Wendel Karbide bilden kann, die die Bruchfestigkeit des Drahtes vermindern oder in die Schicht einwandern und dadurch den Isolationsschichtwiderstand herabsetzen. Ein Zusatz von Al (NO,)" der meistens bei etwa ro% liegt, hat den Nachteil, daß dadurch die Schichtisolation herabgesetzt wird, da diese Verbindung wegen der großen Wasserlöslichkeit nie den gleichen Reinheitsgrad erreichen kann wie A'20..It is common practice to remove the insulating layers of heating panels by spraying with a spray gun or by immersing in appropriately viscous Apply pastes. An addition of nitrocellulose (collodion solution) serves as a binding agent. or an approximately 10% aluminum nitrate additive. The nitrocellulose has the disadvantage that the carbon initially formed during the sintering process may be before it is burned with the tungsten dralite the filament can form carbides, which increase the breaking strength of the Wire or migrate into the layer and thereby the insulation layer resistance reduce. An addition of Al (NO,) ", which is mostly around ro%, has the disadvantage that thereby the layer insulation is reduced, since this connection because of the high water solubility can never reach the same degree of purity as A'20 ..
Das erfindungsgemäße Verfahren besteht nun darin, daß als Bindemittel ein Zusatz von etwa 20% Al (0H)3 verwendet wird. Gegebenenfalls können auch Zuschläge anderer ähnlicher Hydroxvde zur Erzielung besonderer Schichteigenschaften gemacht werden, wie niedrige Sintertemperatur oder größere Scherbendichte, beispielsweise Mg (O H)2 oder Be(OH)2. Durch dieses Verfahren wird eine ausreichende Haftfestigkeit der Schicht erreicht dhne irgendwelche Qualitätsverminderung des Drahtes oder der Isolation. Darüber hinaus wird durch den A12 (O H)3-Zusatz die Anwendung des elektrophoretischen Verfahrens ermöglicht, vermittels dessen das hochgereinigte Isolationsmaterial ohne Zusatz irgendwelcher Art auf dem zu isolierenden Körper abgeschieden werden kann.The method according to the invention now consists in that as a binder an addition of about 20% Al (OH) 3 is used. If necessary, surcharges can also be used other similar hydroxide made to achieve special layer properties such as low sintering temperature or greater body density, for example Mg (O H) 2 or Be (OH) 2. This procedure provides sufficient adhesive strength the layer does not suffer any degradation of Wire or insulation. In addition, the addition of A12 (O H) 3 makes the Application of the electrophoretic process enables, by means of which the highly purified Insulation material without any kind of addition on the body to be insulated can be deposited.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL6146A DE854828C (en) | 1950-10-29 | 1950-10-29 | Process for the production of insulation layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL6146A DE854828C (en) | 1950-10-29 | 1950-10-29 | Process for the production of insulation layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE854828C true DE854828C (en) | 1952-11-06 |
Family
ID=7257012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL6146A Expired DE854828C (en) | 1950-10-29 | 1950-10-29 | Process for the production of insulation layers |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE854828C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1045554B (en) * | 1956-11-30 | 1958-12-04 | Telefunken Gmbh | Process for the production of an immersion and spray-proof, consisting of aluminum oxide insulating layer on a burner for indirectly heated glow cathodes |
| DE1160113B (en) * | 1961-09-28 | 1963-12-27 | Telefunken Patent | Method for embedding a heating wire in a cathode sleeve for electron tubes |
-
1950
- 1950-10-29 DE DEL6146A patent/DE854828C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1045554B (en) * | 1956-11-30 | 1958-12-04 | Telefunken Gmbh | Process for the production of an immersion and spray-proof, consisting of aluminum oxide insulating layer on a burner for indirectly heated glow cathodes |
| DE1160113B (en) * | 1961-09-28 | 1963-12-27 | Telefunken Patent | Method for embedding a heating wire in a cathode sleeve for electron tubes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE854828C (en) | Process for the production of insulation layers | |
| DE1216499B (en) | Enamel with a high dielectric constant applied to iron or iron alloys | |
| DE537790C (en) | Process for the production of coating compounds for oxide cathodes of electron tubes | |
| DE880773C (en) | Process for the production of insulation layers | |
| DE889811C (en) | Thorium oxide paste cathode for electrical discharge vessels | |
| DE610407C (en) | Insulating body or layer for indirectly heated cathodes of electrical discharge vessels | |
| DE856486C (en) | Process for the production of insulative coatings on metallically conductive wires used for heating | |
| DE850023C (en) | Ceramic capacitor and method of manufacturing | |
| DE1903986A1 (en) | Method of manufacturing electrical heating elements | |
| DE561924C (en) | Electrical capacitor, especially high-voltage capacitor, in which layers of poorly conductive materials adjoin the edges of the coverings | |
| DE666739C (en) | Process for the production of insulated helical heating wires | |
| DE512263C (en) | Process for the manufacture of cathodes for electron tubes | |
| AT121233B (en) | Process for depositing one or more of the metals rhodium, iridium, osmium and ruthenium. | |
| DE600129C (en) | Oxide cathode | |
| AT123126B (en) | Process for the production of line-heated cathodes for electron tubes. | |
| DE866971C (en) | Reinforced-ended electrical resistance wire and method for its manufacture | |
| DE872606C (en) | Process for the production of grids for electron tubes | |
| AT167209B (en) | Electrical resistance wire with reinforced ends and method for its manufacture | |
| AT152982B (en) | Surface for the emission of secondary electrons and a method for producing such a surface. | |
| DE933659C (en) | Process for the production of porous, non-metallic sintered masses | |
| DE593516C (en) | Process for the production of indirectly heated glow cathodes | |
| DE825287C (en) | Process for the production of an electric gas and / or vapor discharge tube with a luminescent layer and ignition coating and tubes produced according to this process | |
| DE892024C (en) | Process for the production of a dielectric from titanium dioxide on a support | |
| DE447580C (en) | Wehnelt cathode | |
| DE956088C (en) | Heating wire for indirectly heated cathodes of electrical discharge tubes with an insulating layer applied by electrophoresis and a method for producing an insulating coating |