GB604276A - Improvements in and relating to the art of electric resistance welding forging and heating - Google Patents
Improvements in and relating to the art of electric resistance welding forging and heatingInfo
- Publication number
- GB604276A GB604276A GB9549/44A GB954944A GB604276A GB 604276 A GB604276 A GB 604276A GB 9549/44 A GB9549/44 A GB 9549/44A GB 954944 A GB954944 A GB 954944A GB 604276 A GB604276 A GB 604276A
- Authority
- GB
- United Kingdom
- Prior art keywords
- welding
- current
- primary
- rectifier
- transformer
- 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
- B23K11/26—Storage discharge welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Resistance Heating (AREA)
Abstract
604,276. Supply systems for resistance welding. SCIAKY, D. May 18, 1944, No. 9549. Convention date, Aug. 4, 1943. [Class 38 (iv)] A system for welding, forging and heating comprises a transformer, the primary of which is supplied with successive impulses of direct current which induce low frequency alternating current in the secondary connected to the welding electrodes. In a preferred arrangement the iron core is provided with an air gap. Impulses are derived from rectified A.C. and, according to Figs. 1 and 2, are controlled by maximum current relay 47 which effects intermittent opening and closing of contactors 31, 32 which are energized from a separate source through a starting switch 41 and auxiliary contactors 43. 46. Variation of the wave shape of the welding current may be effected by controlling ignitrons supplying the current or by taps on the primary winding of the welding transformer, controlling the turn ratio between primary and secondary. Modifications include : (1) the use of a timing device or devices in place of the maximum current relay ; (2) switches operated by a rotating cam arrangement 64, Fig. 6, which interrupts the supply to rectifier 77, and (3) an.alternative method of varying the wave shape of the welding current by means of a further cam whereby the voltage applied to the rectifier is reduced by inserting resistors before removal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US604276XA | 1943-08-04 | 1943-08-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB604276A true GB604276A (en) | 1948-07-01 |
Family
ID=22029405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9549/44A Expired GB604276A (en) | 1943-08-04 | 1944-05-18 | Improvements in and relating to the art of electric resistance welding forging and heating |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB604276A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4877835A (en) * | 1971-12-06 | 1973-10-19 |
-
1944
- 1944-05-18 GB GB9549/44A patent/GB604276A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4877835A (en) * | 1971-12-06 | 1973-10-19 |
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