JPS55117579A - Resistance welding method of annealing portion near weld zone of steel - Google Patents
Resistance welding method of annealing portion near weld zone of steelInfo
- Publication number
- JPS55117579A JPS55117579A JP9864678A JP9864678A JPS55117579A JP S55117579 A JPS55117579 A JP S55117579A JP 9864678 A JP9864678 A JP 9864678A JP 9864678 A JP9864678 A JP 9864678A JP S55117579 A JPS55117579 A JP S55117579A
- Authority
- JP
- Japan
- Prior art keywords
- current
- electrodes
- supply
- sub
- welding
- 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.)
- Pending
Links
Landscapes
- Resistance Welding (AREA)
Abstract
PURPOSE: To readily and surely weld the welding works of various shapes by declining and supplying, for the specified time, the current smaller than welding current and the current approximately the same as this, respectively, betweem the sub-electrodes spacing suitably from main electrodes before and after current supply to the main electrodes which sandwich the welding works under pressure.
CONSTITUTION: For example, the weld zone of a plate material 13 which is not "hardened" and a curved round bar 15 such as spring steel which is "hardened" is sandwiched under pressure by main electrodes 17, 19. The round bar 15 is spaced at a suitable distance from the main electrode 17 and is pressed by the sub-electrodes 21, 23 in the position where it is sandwiched. Thence, a switch 29 is turned on to supply the current 35 smaller than welding current between the sub- electrodes 21, 23 from a power source 33 for about 1/10 second, after which a switch 31 is turned on to supply current 37 to the main electrodes 17, 19 in superposition thereon. Then, when a nugget 25 is produced, the switch 31 is immediately opened to stop the current 37. For about 1 second after this stoppage, the supply of the current 39 to the sub-electrodes 21, 23 is continued and the current is gradually declined by a control unit 27 near the terminal period of the current supply, after which the current supply is stopped.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9864678A JPS55117579A (en) | 1978-08-15 | 1978-08-15 | Resistance welding method of annealing portion near weld zone of steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9864678A JPS55117579A (en) | 1978-08-15 | 1978-08-15 | Resistance welding method of annealing portion near weld zone of steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55117579A true JPS55117579A (en) | 1980-09-09 |
Family
ID=14225259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9864678A Pending JPS55117579A (en) | 1978-08-15 | 1978-08-15 | Resistance welding method of annealing portion near weld zone of steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117579A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014121723A (en) * | 2012-12-21 | 2014-07-03 | Toyota Industries Corp | Welding method and welding equipment |
-
1978
- 1978-08-15 JP JP9864678A patent/JPS55117579A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014121723A (en) * | 2012-12-21 | 2014-07-03 | Toyota Industries Corp | Welding method and welding equipment |
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