GB2014331A - Flash Welders - Google Patents
Flash WeldersInfo
- Publication number
- GB2014331A GB2014331A GB7839773A GB7839773A GB2014331A GB 2014331 A GB2014331 A GB 2014331A GB 7839773 A GB7839773 A GB 7839773A GB 7839773 A GB7839773 A GB 7839773A GB 2014331 A GB2014331 A GB 2014331A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- comparator
- potentiometer
- source
- platen
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
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
- B23K11/04—Flash butt welding
- B23K11/043—Flash butt welding characterised by the electric circuits used therewith
-
- 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
- B23K11/241—Electric supplies
- B23K11/246—Electric supplies for flash welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
An electrical control terminates the upset current of a flash welding process as a function of platen position. It comprises an operational amplifier which is used as a comparator. Voltage from a first source is fed to the comparator, this voltage being adjustable to provide for termination of the upset current at a selected position of the movable platen of the flash welder. Voltage from a second source is impressed upon a potentiometer and this voltage is varied in magnitude as the movable platen moves toward its closed position on the stationary platen. The variable voltage from the potentiometer is also fed into the comparator. When the algebraic sum of the voltage from the potentiometer and offset voltage of the comparator becomes of a magnitude (more or less) than the adjusted voltage from the first source, the comparator acts in the manner of a precision switch to set into operation means to terminate the upset current. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87601078A | 1978-02-08 | 1978-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2014331A true GB2014331A (en) | 1979-08-22 |
Family
ID=25366784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7839773A Withdrawn GB2014331A (en) | 1978-02-08 | 1978-10-09 | Flash Welders |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE874044A (en) |
DE (1) | DE2904414A1 (en) |
FR (1) | FR2416765A1 (en) |
GB (1) | GB2014331A (en) |
IN (1) | IN150364B (en) |
IT (1) | IT1164932B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2457736A1 (en) * | 1979-05-29 | 1980-12-26 | Inst Po Stroitelstvu Magistral | Flash butt welding machine - with sensors for all parameters affecting weld quality (OE 15.6.80) |
FR2481172A1 (en) * | 1980-04-23 | 1981-10-30 | Matix Ind | Flash butt welding machine, esp. for railway rails - where hydraulic circuit contg. adjustable control valves is used to adjust welding gap between rails |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3706316C2 (en) * | 1987-02-27 | 1994-07-21 | Stahlberg Roensch Gmbh & Co Kg | Process for flash butt welding of parts to be butted together |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE693189C (en) * | 1936-09-01 | 1940-07-03 | Siemens Schuckertwerke Akt Ges | Automatically controlled drive device for electrical flash welding machines |
-
1978
- 1978-10-09 GB GB7839773A patent/GB2014331A/en not_active Withdrawn
- 1978-10-21 IN IN1144/CAL/78A patent/IN150364B/en unknown
-
1979
- 1979-02-06 DE DE19792904414 patent/DE2904414A1/en not_active Withdrawn
- 1979-02-06 FR FR7902975A patent/FR2416765A1/en not_active Withdrawn
- 1979-02-07 IT IT67274/79A patent/IT1164932B/en active
- 1979-02-08 BE BE0/193359A patent/BE874044A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2457736A1 (en) * | 1979-05-29 | 1980-12-26 | Inst Po Stroitelstvu Magistral | Flash butt welding machine - with sensors for all parameters affecting weld quality (OE 15.6.80) |
FR2481172A1 (en) * | 1980-04-23 | 1981-10-30 | Matix Ind | Flash butt welding machine, esp. for railway rails - where hydraulic circuit contg. adjustable control valves is used to adjust welding gap between rails |
Also Published As
Publication number | Publication date |
---|---|
FR2416765A1 (en) | 1979-09-07 |
IT7967274A0 (en) | 1979-02-07 |
BE874044A (en) | 1979-08-08 |
DE2904414A1 (en) | 1979-08-09 |
IN150364B (en) | 1982-09-18 |
IT1164932B (en) | 1987-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |