GB533760A - Improvements in and relating to the manufacture of electrically welded metal tubing - Google Patents
Improvements in and relating to the manufacture of electrically welded metal tubingInfo
- Publication number
- GB533760A GB533760A GB30683/39A GB3068339A GB533760A GB 533760 A GB533760 A GB 533760A GB 30683/39 A GB30683/39 A GB 30683/39A GB 3068339 A GB3068339 A GB 3068339A GB 533760 A GB533760 A GB 533760A
- Authority
- GB
- United Kingdom
- Prior art keywords
- seam
- electrode
- nov
- relating
- manufacture
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/24—Electric supply or control circuits therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Control Of Resistance Heating (AREA)
Abstract
533,760. Welding. SPURWAY, F. G. Nov. 24, 1939, No. 30683. Convention date, Nov. 16, 1938. [Class 83 (iv)] In resistance welding the longitudinal seam of a tube formed from bright or black stock, the current passes longitudinally of the tube from one electrode to a second and also from the second to a third which is in two parts so arranged as to pass the current also transversely of the seam. The roller electrodes 7, 8, which are in direct contact with the team, are each connected to one of the closed phase points of an open delta secondary 6 of a three-phase transformer provided with a tapped primary 5. The third electrode 9 consists of two components 12, 13 insulated from each other and arranged on opposite sides of the seam and connected to the open phase points of the secondary. Insulated pressure rollers 14 are arranged slightly in rear of the electrodes 7, 8, whilst those adjacent to 9 are directly underneath the weld and provide the upsettling pressure. The seam when travelling from electrode 7 to 8 may be preheated to 700‹C. and from 8 to 9 to 1250‹C. The seam in advance of the electrode 9 may be descaled by steam.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU533760X | 1938-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB533760A true GB533760A (en) | 1941-02-19 |
Family
ID=3739377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30683/39A Expired GB533760A (en) | 1938-11-16 | 1939-11-24 | Improvements in and relating to the manufacture of electrically welded metal tubing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB533760A (en) |
-
1939
- 1939-11-24 GB GB30683/39A patent/GB533760A/en not_active Expired
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