GB875660A - Improvements in electric arc welding apparatus - Google Patents
Improvements in electric arc welding apparatusInfo
- Publication number
- GB875660A GB875660A GB3417356A GB3417356A GB875660A GB 875660 A GB875660 A GB 875660A GB 3417356 A GB3417356 A GB 3417356A GB 3417356 A GB3417356 A GB 3417356A GB 875660 A GB875660 A GB 875660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- generator
- sections
- welding
- mutually
- arc
- 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
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1012—Power supply characterised by parts of the process
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
875,660. Exciting dynamo-electric machines; supply systems for welding arcs. LINCOLN ELECTRIC CO. Ltd. Jan. 24, 1958 [Nov. 8, 1956], No. 34173/56. Classes 35 and 38 (4). In an electric arc welding apparatus comprising means for producing a welding arc 6 and a generator for supplying the arc and having control gear, the generator field winding is separately excited and is divided into two or more sections 1, 2, and the control gear includes means for changing the connections to one of the sections whereby the sections may be changed from mutually additive to mutually subtractive magnetic effect in order to substantially reduce the generator output voltage while maintaining current through the field windings. The invention is to reduce output voltage variations as between when the generator is hot or cold, by keeping the field windings at a constant temperature regardless of whether the generator is idling or supplying welding current. As shown the changing means comprises a change-over switch 4 connected across the section 2 which is parallel connected with the section 1 which has a series-connected either fixed or variable resistor 5. Alternatively the sections 1, 2 may be mutually series connected, and they may have either equal or unequal magnetic effects to one another, the latter embodiment providing a voltage sufficient for adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3417356A GB875660A (en) | 1956-11-08 | 1956-11-08 | Improvements in electric arc welding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3417356A GB875660A (en) | 1956-11-08 | 1956-11-08 | Improvements in electric arc welding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875660A true GB875660A (en) | 1961-08-23 |
Family
ID=10362298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3417356A Expired GB875660A (en) | 1956-11-08 | 1956-11-08 | Improvements in electric arc welding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875660A (en) |
-
1956
- 1956-11-08 GB GB3417356A patent/GB875660A/en not_active Expired
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