DE886784C - Method for sealing surfaces of objects, in particular of capacitor housings - Google Patents
Method for sealing surfaces of objects, in particular of capacitor housingsInfo
- Publication number
- DE886784C DE886784C DEL4475D DEL0004475D DE886784C DE 886784 C DE886784 C DE 886784C DE L4475 D DEL4475 D DE L4475D DE L0004475 D DEL0004475 D DE L0004475D DE 886784 C DE886784 C DE 886784C
- Authority
- DE
- Germany
- Prior art keywords
- objects
- sealing surfaces
- capacitor housings
- housings
- paint
- 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 10
- 239000003990 capacitor Substances 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 title claims description 5
- 239000003973 paint Substances 0.000 claims description 6
- 239000002966 varnish Substances 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 238000002425 crystallisation Methods 0.000 claims 1
- 230000008025 crystallization Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000011269 tar Substances 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/12—Protection against corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
Verfahren zum Abdichten von Oberflächen von Gegenständen, insbesondere von Kondensatorgehäusen Bei vielen technischen Gegenständen ist es nötig, diese den äußeren Einflüssen der Atmosphäre zu entziehen. Dafür wird in vielen Fällen ein Tränkverfahren angewendet, z. B. zur Konservierung von Holz oder zur Haltbarmachung von Kondensatorenwickeln. Die Anwendung eines solchen Tränkverfahrens ist aber z. B. bei Kondensatoren nicht ausreichend, denn selbst das Tränkmittel, z. B. Paraffin oder Vaseline, nimmt Feuchtigkeit auf und vermindert dadurch die guten Eigenschaften des Kondensators. Man umgibt darum die Kondensatorenwickel noch mit einem Gehäuse aus Hartpapier oder Metall. Diese Gehäuse werden dann mit einer Vergußmasse abgeschlossen oder bei hochwertigen Kondensatoren unter Verwendung von eingelöteten Glas- oder keramischen Durchführungen völlig dichtgelötet. Diese völlige Dichtlötung erfordert aber einen verhältnismäßig hohen Aufwand an Werkstoff und Arbeitszeit. Bei Kondensatoren mit hohen Beanspruchungen läßt sich dieses Abschlußverfahren aber nicht vermeiden.Method for sealing surfaces of objects, in particular of capacitor housings For many technical objects it is necessary to have them to withdraw the external influences of the atmosphere. This is done in many cases applied an impregnation process, e.g. B. to preserve wood or to preserve it of capacitor windings. The use of such an impregnation process is z. B. in capacitors not sufficient, because even the impregnating agent, z. B. paraffin or Vaseline, absorbs moisture and thereby reduces the good properties of the capacitor. The capacitor winding is therefore surrounded by a housing made of hard paper or metal. These housings are then closed with a potting compound or in the case of high-quality capacitors using soldered glass or ceramic bushings completely tightly soldered. This requires complete sealing soldering but a relatively high expenditure of material and working time. With capacitors However, this closing procedure cannot be avoided with high demands.
Die vorliegende Erfindung ermöglicht es, auch mit einfachen Mitteln für die Verwendungszeit der Geräte völlig ausreichenden Abschluß zu schaffen. Es können dabei Verfahren für den Bau des Gehäuses angewendet werden, die nicht zur völligen Abdichtung führen, wie z. B. beim Abschluß eines runden Metallbechers durch einen aufgesetzten Isolierkopf aus Preßmasse oder beim Einpressen von Preßmassedurchführungen in die Deckel von Metallgehäusen. Bei den genannten einfacheren Verfahren wird von vornherein damit gerechnet, daß, wie die Erfahrung gelehrt hat, die Abdichtung nicht ganz vollkommen ist. An den Verbindungsstellen sind dann Spalte vorhanden in einer Länge von ein oder mehreren Millimetern.The present invention makes it possible even with simple means to create a completely sufficient closure for the period of use of the devices. It procedures for the construction of the housing can be used that are not intended for complete sealing, such as. B. at the conclusion of a round Metal cup by an attached insulating head made of molding compound or when pressed in of molding compound feedthroughs in the lids of metal housings. With the mentioned Simpler procedures are expected from the outset that, like experience taught that the seal is not quite perfect. At the connection points then there are gaps with a length of one or more millimeters.
Die Erfindung bezweckt, diese Spalte mit einem geeigneten Stoff auszufüllen und den Stoff in diesen Spalten. zur Erstarrung kommen zu lassen. Zu diesem Zweck wird nach der völligen Fertigstellung des Gehäuses dieses mit einer Schicht überzogen, die beispielsweise aus einem geeigneten Lack besteht. Der Lack kann in bekannter Weise durch Tauchen, Spritzen od. ä. aufgetragen werden. Dann wird der so vorbereitete Kondensator in einem Raum gebracht, in dem ein Überdruck herrscht von beispielsweise z atü. Dadurch wird der Lack in die Poren gepreßt. Bei der hohen Kohäsion des Lackes ist dieser in der Lage, die zur Ausfüllung des Spaltes erforderliche Lackmenge von der Oberfläche in den Spalt hineinzuziehen. In der Regel wird die dann im Spalt selbst wirkende Kapillarkraft ausreichen, um den Stoff festzuhalten. Wenn aber Schwierigkeiten auftreten, kann gemäß der weiteren Erfindung auch der Überdruck so lange aufrechterhalten werden, bis der Lack, z. B. durch Verdunsten, abgetrocknet ist. Diese Drucklackierung hat gegenüber der bisher üblichen einfachen Auftragung des Lackes den Vorteil, daß der Lack weit in die Tiefen der Spalte eindringt und dadurch die Spalte fest verschließt. Wenn der Spalt wie bisher nur an der Oberfläche mit Lack überzogen ist, so besteht die Gefahr, daß die dann abschließende Haut bei äußerem Überdruck zerreißt und dann Undichtigkeiten auftreten. Das neue Verfahren stellt also einen wesentlich festeren Abschluß dar und ergibt in den undichten Stellen eine weit größere Dicke, entsprechend der Tiefe des Spaltes, wodurch auch der Feuchtigkeitsabschluß erheblich besser ist.The aim of the invention is to fill this column with a suitable substance and the stuff in these columns. to freeze. To this end after the complete completion of the housing, it is covered with a layer, which consists, for example, of a suitable paint. The paint can be known in Can be applied by dipping, spraying or the like. Then the one so prepared Condenser placed in a room in which there is an overpressure of, for example z atü. This will force the paint into the pores. With the high cohesion of the varnish if this is able to fill the gap, the amount of lacquer required by the surface into the gap. Usually this is then in the gap self-acting capillary force is sufficient to hold the fabric in place. But if there are difficulties occur, according to the further invention, the overpressure can also be maintained for such a long time until the paint, e.g. B. by evaporation is dried. This print varnish has the advantage over the previously common simple application of the paint that the lacquer penetrates far into the depths of the gap and thereby tightly closes the gap. If the gap is only covered with varnish on the surface, as before, then there is the risk that the then final skin will tear if there is excessive external pressure, and then Leaks occur. The new procedure is therefore a much more solid one Completion and results in a much greater thickness in the leaks, accordingly the depth of the gap, which means that the moisture barrier is considerably better.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL4475D DE886784C (en) | 1944-07-01 | 1944-07-01 | Method for sealing surfaces of objects, in particular of capacitor housings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL4475D DE886784C (en) | 1944-07-01 | 1944-07-01 | Method for sealing surfaces of objects, in particular of capacitor housings |
Publications (1)
Publication Number | Publication Date |
---|---|
DE886784C true DE886784C (en) | 1953-08-17 |
Family
ID=7256522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL4475D Expired DE886784C (en) | 1944-07-01 | 1944-07-01 | Method for sealing surfaces of objects, in particular of capacitor housings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE886784C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1073107B (en) * | 1960-01-14 | Ernst Roederstein Spezialfabnk fur Kondensatoren GmbH Landshut (Bay) | Process for the production of electrical components, in particular small wound capacitors |
-
1944
- 1944-07-01 DE DEL4475D patent/DE886784C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1073107B (en) * | 1960-01-14 | Ernst Roederstein Spezialfabnk fur Kondensatoren GmbH Landshut (Bay) | Process for the production of electrical components, in particular small wound capacitors |
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