AT53873B - Circuit for electrical resistance welding with the aid of a direct current source. - Google Patents
Circuit for electrical resistance welding with the aid of a direct current source.Info
- Publication number
- AT53873B AT53873B AT53873DA AT53873B AT 53873 B AT53873 B AT 53873B AT 53873D A AT53873D A AT 53873DA AT 53873 B AT53873 B AT 53873B
- Authority
- AT
- Austria
- Prior art keywords
- circuit
- direct current
- electrical resistance
- current source
- resistance welding
- Prior art date
Links
- 238000003466 welding Methods 0.000 title claims description 6
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 5
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Arc Welding Control (AREA)
Description
<Desc/Clms Page number 1>
Schaltung für die elektrische Widerstandsschweissung mit Hilfe einer Gleichstromquelle.
Bei dem elektrischen Widerstandsschweissverfahren nach Patent Nr. 52242, bei weichem eine Gleichstromquelle in einer Kondensatorschaltung mit einem Schweiss transformator zur Anwendung kommt, macht sich, wenn der Transformator in Reihe mit einem Kondensator liegt, der Übc ! stand bemerkbar, dass bei nichtgeschlossenem sekundären Stromkreis des Transformators, d. h. in den Arbeitspausen und bei mangelhaften Stromschluss in bzw. an den Schweissstücken, der Transformator als Drosselspule wirkt, und dass infolgedessen starke Funkenbildung an dem Stromwender eintritt, der bei Umwandlung des zur Verfügung stehenden Gleichstromes in Wechselstrom als wesentlicher Bestandteil mitwirkt.
Es hat sich nun gezeigt, dass dieser Übelstand vermieden werden kann, wenn zwei oder mehrere Kondensatoren in Reihe geschaltet werden und parallel zu einem Teil dieser Kondensatoren die primäre Wickelung des Transformators goschaitot wird.
In der Zeichnung sind zwei Ausführungsbeispiele für eine derartige Schaltung dargestellt.
In Fig. 1 ist a eine Gleichstromquelle, welche mit zwei Bürsten des Stromwenders b verbunden ist. Die beiden anderen Bürsten des Stromwenders stehen mit den Kondensatoren c und f und der Primärwindung d des Transformators in Verbindung. Die Kondensatoren c und f werden fortlandfend umgeladen und in der primären Transformatorwickelung fliessen abwechselnd Stromstösse in entgegengesetzter Richtung, so dass in der nur wenige Windungen enthaltenden sekundären Wickelung e des Transformators ein niedrig gespannter Wechselstrom erzeugt wird, der den Schweisselektroden g zugeführt wird.
EMI1.1
formatoren.
In diesen Schaltungen haben sich besonders Flüssigkeitskondensatoren von relativ grosser Kapazität gut bewährt.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Circuit for electrical resistance welding with the aid of a direct current source.
In the electrical resistance welding process according to patent no. 52242, in which a direct current source in a capacitor circuit with a welding transformer is used, if the transformer is in series with a capacitor, the Üc! it was noticeable that when the secondary circuit of the transformer is not closed, i. H. In the work breaks and in the event of a deficient electrical connection in or on the weldments, the transformer acts as a choke coil, and as a result, strong sparking occurs on the commutator, which is an essential part of converting the available direct current into alternating current.
It has now been shown that this deficiency can be avoided if two or more capacitors are connected in series and the primary winding of the transformer is goschaitot in parallel with some of these capacitors.
Two exemplary embodiments for such a circuit are shown in the drawing.
In Fig. 1, a is a direct current source which is connected to two brushes of the commutator b. The other two brushes of the commutator are connected to the capacitors c and f and the primary winding d of the transformer. The capacitors c and f are continuously reloaded and in the primary transformer winding alternating currents flow in opposite directions, so that in the secondary winding e of the transformer, which contains only a few turns, a low-voltage alternating current is generated, which is fed to the welding electrodes g.
EMI1.1
formators.
In these circuits, liquid capacitors with a relatively large capacity have particularly proven their worth.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT52242T | 1909-11-22 | ||
| AT53873T | 1910-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT53873B true AT53873B (en) | 1912-06-10 |
Family
ID=25601955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT53873D AT53873B (en) | 1909-11-22 | 1910-05-20 | Circuit for electrical resistance welding with the aid of a direct current source. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT53873B (en) |
-
1910
- 1910-05-20 AT AT53873D patent/AT53873B/en active
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