GB1146283A - Improvements in or relating to direct current electric arc initiation - Google Patents
Improvements in or relating to direct current electric arc initiationInfo
- Publication number
- GB1146283A GB1146283A GB1088265A GB1088265A GB1146283A GB 1146283 A GB1146283 A GB 1146283A GB 1088265 A GB1088265 A GB 1088265A GB 1088265 A GB1088265 A GB 1088265A GB 1146283 A GB1146283 A GB 1146283A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- inverter
- welding
- march
- circuit
- 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
- 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)
- Arc Welding Control (AREA)
Abstract
1,146,283. Arc systems. AIR PRODUCTS Ltd. 15 March, 1966 [15 March, 1965], No. 10882/65. Heading H2H. A D.C. arc 14, 15 is started and maintained by a series of high voltage D.C. pulses of the same polarity as the arc produced by an inverter 17 coupled to a transformer 34 and a ladder network 18 the output of which is connected to the arc through a capacitor 39 which is repeatedly discharged through a spark gap 40. The inverter input is connected across the arc so that it is disabled when the arc is struck. The inverter may be of the ringing choke transistor type 17 fed from a network 19 compensating for changes in opencircuit voltage. In a welding arrangement, an argon gas solenoid-operated valve 20 may be energized simultaneously with the inverter on operation of a manual switch 25 on the welding torch which solenoid is maintained energized for a short period after cessation of welding by a timing circuit 21, which also disconnects the inverter and closes the gas valve, say four seconds after closure of the switch 25 should the are not strike. A crater eliminator circuit (not shown) may be included which operates by switching resistors progressively into the arc circuit before termination of the arc current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1088265A GB1146283A (en) | 1965-03-15 | 1965-03-15 | Improvements in or relating to direct current electric arc initiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1088265A GB1146283A (en) | 1965-03-15 | 1965-03-15 | Improvements in or relating to direct current electric arc initiation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1146283A true GB1146283A (en) | 1969-03-26 |
Family
ID=9976060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1088265A Expired GB1146283A (en) | 1965-03-15 | 1965-03-15 | Improvements in or relating to direct current electric arc initiation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1146283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589307A1 (en) * | 1985-10-25 | 1987-04-30 | Soudure Autogene Francaise | METHOD FOR PRIMING AN ELECTRIC WELDING ARC AND WELDING TORCH USING THE SAME |
-
1965
- 1965-03-15 GB GB1088265A patent/GB1146283A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2589307A1 (en) * | 1985-10-25 | 1987-04-30 | Soudure Autogene Francaise | METHOD FOR PRIMING AN ELECTRIC WELDING ARC AND WELDING TORCH USING THE SAME |
| WO1987002606A1 (en) * | 1985-10-25 | 1987-05-07 | L'air Liquide, Societe Anonyme Pour L'etude Et L'e | Arcing method in electric welding and welding torch for implementing said method |
| EP0223675A1 (en) * | 1985-10-25 | 1987-05-27 | La Soudure Autogene Francaise | Electric-welding torch with device for starting the arc |
| US4855566A (en) * | 1985-10-25 | 1989-08-08 | L'air Liquide | Process for striking an arc in electric welding and welding torch employing said process |
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