GB1431379A - Arc-striking sytems - Google Patents
Arc-striking sytemsInfo
- Publication number
- GB1431379A GB1431379A GB2110572A GB2110572A GB1431379A GB 1431379 A GB1431379 A GB 1431379A GB 2110572 A GB2110572 A GB 2110572A GB 2110572 A GB2110572 A GB 2110572A GB 1431379 A GB1431379 A GB 1431379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- supply
- striking
- source
- power supply
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/006—Control circuits therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
- B23K9/067—Starting the arc
- B23K9/0672—Starting the arc without direct contact between electrodes
- B23K9/0673—Ionisation of the arc gap by means of a tension with a step front (pulses or high frequency tensions)
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Plasma Technology (AREA)
Abstract
1431379 Supply circuits for arc systems ASSOCIATED ENG Ltd 18 July 1973 [5 May 1972] 21105/72 Heading H2H A system for striking an arc between the spaced electrodes 11, 12 of a plasma gun 10 comprises a power supply, the voltage of which is insufficient to strike the arc but is sufficient to sustain an arc after striking, a source 26 of alternating voltage for striking the arc and an inductance 30 which inhibits the passage of alternating current from the source 26 to the power supply. The power supply for sustaining the arc is an 80 volt D.C. supply connected between terminals marked + VE and - VE. Cooling water is supplied to the electrodes via inlet and outlet pipes 24, 17, and via metal lined pipes 15, 16. The D.C. supply is converted to a 10-15 kilovolt supply at a frequency of 2 kc/s. by the source 26 which comprises a two transistor oscillator. The inductance 30 presents a high impedance to the H.T. supply which is fed to the electrodes via a rectifier and an adjustable spark gap 29. A switch 23 prevents the arc being struck unless cooling water is flowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2110572A GB1431379A (en) | 1972-05-05 | 1972-05-05 | Arc-striking sytems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2110572A GB1431379A (en) | 1972-05-05 | 1972-05-05 | Arc-striking sytems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1431379A true GB1431379A (en) | 1976-04-07 |
Family
ID=10157319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2110572A Expired GB1431379A (en) | 1972-05-05 | 1972-05-05 | Arc-striking sytems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1431379A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3322455A1 (en) * | 1982-06-22 | 1983-12-22 | Anglo Amer Corp South Africa | ELECTRIC WELDING APPARATUS |
| US4453073A (en) * | 1980-12-22 | 1984-06-05 | Crucible Societe Anonyme | High frequency welding apparatus |
-
1972
- 1972-05-05 GB GB2110572A patent/GB1431379A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4453073A (en) * | 1980-12-22 | 1984-06-05 | Crucible Societe Anonyme | High frequency welding apparatus |
| DE3322455A1 (en) * | 1982-06-22 | 1983-12-22 | Anglo Amer Corp South Africa | ELECTRIC WELDING APPARATUS |
| US4520255A (en) * | 1982-06-22 | 1985-05-28 | Crucible Societe Anonyme | High frequency self-oscillating welding apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920718 |