JPS5536048A - Direct current arc welder - Google Patents
Direct current arc welderInfo
- Publication number
- JPS5536048A JPS5536048A JP10938678A JP10938678A JPS5536048A JP S5536048 A JPS5536048 A JP S5536048A JP 10938678 A JP10938678 A JP 10938678A JP 10938678 A JP10938678 A JP 10938678A JP S5536048 A JPS5536048 A JP S5536048A
- Authority
- JP
- Japan
- Prior art keywords
- intermediate tap
- reactance
- reactor
- rise
- tap
- 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
- Arc Welding Control (AREA)
Abstract
PURPOSE: To enable smooth arc shifting by short-circuiting a part of d.c. reactor when the consumable electrode makes contact with the base metal and thereby steepening rise of welding current.
CONSTITUTION: The three-phase a.c. from the terminal 4 is rectified by thyristors TH1WTH6 through the main transformer T and output from terminals 5, 6. The d.c. reactor L2 of the output side is provided with an intermediate tap, and, at the same time, a switching element TH7 such as a thyristor etc. is connected between the tap and one end of L2 in direction of main current. The position of the intermediate tap is the point where the reactance L', L" become L'≤L". When the consumable electrode comes in contact with the base metal, the element TH7 is in conduction by gate signal and short-circuit is caused between one end of L2 and the intermediate tap. At this time, the reactance of L2 becomes L' only and the welding current Iw rises steeply. However, the rise is restricted to some degree and breakdown of the thyristor is prevented. After starting of arc, the element TH7 becomes nonconducting state automatically.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10938678A JPS5536048A (en) | 1978-09-05 | 1978-09-05 | Direct current arc welder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10938678A JPS5536048A (en) | 1978-09-05 | 1978-09-05 | Direct current arc welder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5536048A true JPS5536048A (en) | 1980-03-13 |
Family
ID=14508909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10938678A Pending JPS5536048A (en) | 1978-09-05 | 1978-09-05 | Direct current arc welder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5536048A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0610025A (en) * | 1992-06-29 | 1994-01-18 | Kawasaki Steel Corp | Method for reforming slag in ladle |
JP2006130512A (en) * | 2004-11-02 | 2006-05-25 | Yaskawa Electric Corp | Arc welding equipment |
AU2005201948B1 (en) * | 2004-12-16 | 2006-06-15 | Lincoln Global, Inc. | System for welding with multiple arcs |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4217702Y1 (en) * | 1964-03-10 | 1967-10-13 |
-
1978
- 1978-09-05 JP JP10938678A patent/JPS5536048A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4217702Y1 (en) * | 1964-03-10 | 1967-10-13 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0610025A (en) * | 1992-06-29 | 1994-01-18 | Kawasaki Steel Corp | Method for reforming slag in ladle |
JP2006130512A (en) * | 2004-11-02 | 2006-05-25 | Yaskawa Electric Corp | Arc welding equipment |
JP4570444B2 (en) * | 2004-11-02 | 2010-10-27 | 株式会社安川電機 | Arc welding equipment |
AU2005201948B1 (en) * | 2004-12-16 | 2006-06-15 | Lincoln Global, Inc. | System for welding with multiple arcs |
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