GB649728A - Improvements in or relating to electric welding - Google Patents
Improvements in or relating to electric weldingInfo
- Publication number
- GB649728A GB649728A GB34447/47A GB3444747A GB649728A GB 649728 A GB649728 A GB 649728A GB 34447/47 A GB34447/47 A GB 34447/47A GB 3444747 A GB3444747 A GB 3444747A GB 649728 A GB649728 A GB 649728A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- welding
- current
- arc
- oscillation
- 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
- B23K9/0671—Starting the arc by means of brief contacts between the electrodes
-
- 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)
-
- 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
- B23K9/073—Stabilising the arc
- B23K9/0738—Stabilising of the arc by automatic re-ignition means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
649,728. Supply systems for welding arcs and resistance welding. ZACK, M. Dec. 29, 1947, No. 34447. Convention date, Nov. 16, 1939. [Class 38 (iv)] A D.C. or low-frequency A.C. welding arc operating from a supply of relatively low open circuit voltage is initiated and maintained by highfrequency currents generated in an oscillatory circuit which is shocked into oscillation when the electrode is withdrawn from the work to strike the arc or whenever the current in the welding circuit is abruptly interrupted by the are temporarily extinguishing. As shown, the electrode 4 and work 3 are connected to the low voltage supply terminals 1, 2 and also to a circuit comprising inductance 9, capacitance 10 and the secondary winding 11 of a current transformer 12 the primary winding 13 of which is included in the main welding circuit. When the current in the main welding circuit is interrupted collapse of flux in the transformer core shocks the circuit 9, 10 into oscillation. Filters may be provided to permit only the high-frequency oscillations to the arc from the oscillating circuit. The invention may be applied to resistance welding in which case the high-frequency oscillations are obtained upon interruption of the welding current.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR864174T | 1939-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB649728A true GB649728A (en) | 1951-01-31 |
Family
ID=60893288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34447/47A Expired GB649728A (en) | 1939-11-16 | 1947-12-29 | Improvements in or relating to electric welding |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE471677A (en) |
| CH (1) | CH259522A (en) |
| FR (1) | FR864174A (en) |
| GB (1) | GB649728A (en) |
-
1939
- 1939-11-16 FR FR864174D patent/FR864174A/en not_active Expired
-
1947
- 1947-03-06 BE BE471677A patent/BE471677A/en unknown
- 1947-03-06 CH CH259522D patent/CH259522A/en unknown
- 1947-12-29 GB GB34447/47A patent/GB649728A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR864174A (en) | 1941-04-21 |
| CH259522A (en) | 1949-01-31 |
| BE471677A (en) | 1947-04-30 |
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