JPS569061A - Direct current arc welding machine - Google Patents
Direct current arc welding machineInfo
- Publication number
- JPS569061A JPS569061A JP8325579A JP8325579A JPS569061A JP S569061 A JPS569061 A JP S569061A JP 8325579 A JP8325579 A JP 8325579A JP 8325579 A JP8325579 A JP 8325579A JP S569061 A JPS569061 A JP S569061A
- Authority
- JP
- Japan
- Prior art keywords
- rectifying circuit
- reactor
- thyristors
- electric current
- 4thw6th
- 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 make possible smooth arc starting by short-circuiting a DC reactor at the contacting of an electrode and base metals thereby making the rise of electric current steep and obviating the impairment of DC reactor effect at the arc stabilizing.
CONSTITUTION: Primary windings Ta of a transformer T are delta-connected and are connected to the inlet terminals 1W3 of 3-phase AC. Intermediate taps are provided to its secondary windings Tb. The 1st rectifying circuit RF1 is constituted by the 1stW3rd thyristors TH1W3 and the 2nd rectifying circuit RF2 is constituted by the 4thW6th thyristors TH4W6 connected to the intermediate taps of the secondary windings. A cotrol rectifying circuit S consisting of a thyristor connected between the connecting points of the anodes of the 4thW6th thyristors and an output terminal 4 is provided. A rectifying element D such as diode is placed from the connecting point of the 1st rectifying circuit and a linear reactor DCL to the connecting point of the 2nd rectifying circuit and the control rectifying circuit. Because of this, the electric current of the base by the 2nd rectifying circuit flows without passing through the DC reactor at the arc starting, thus the rise of the electric current becomes steep.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8325579A JPS569061A (en) | 1979-06-30 | 1979-06-30 | Direct current arc welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8325579A JPS569061A (en) | 1979-06-30 | 1979-06-30 | Direct current arc welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS569061A true JPS569061A (en) | 1981-01-29 |
Family
ID=13797219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8325579A Pending JPS569061A (en) | 1979-06-30 | 1979-06-30 | Direct current arc welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS569061A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01173684U (en) * | 1988-05-30 | 1989-12-08 |
-
1979
- 1979-06-30 JP JP8325579A patent/JPS569061A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01173684U (en) * | 1988-05-30 | 1989-12-08 |
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