JPS5548477A - Direct-current arc welding - Google Patents
Direct-current arc weldingInfo
- Publication number
- JPS5548477A JPS5548477A JP12111278A JP12111278A JPS5548477A JP S5548477 A JPS5548477 A JP S5548477A JP 12111278 A JP12111278 A JP 12111278A JP 12111278 A JP12111278 A JP 12111278A JP S5548477 A JPS5548477 A JP S5548477A
- Authority
- JP
- Japan
- Prior art keywords
- current
- direct
- primary
- winding
- circuit
- 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 improve arc start characteristics of a direct-current arc welder by providing a direct-current reactor composed of primary and secondary winding differing winding in direction, by connecting a series circuit of the secondary winding and a switching element in parallel to the primary winding and then by making the above-mentioned element conductive for a specific time.
CONSTITUTION: Wear type electrode 4 is in contact with base material 5 and when alternating-current inputs from input terminals 1, 2 and 3 are supplied to electrodes 4 and 5 by way of transformer T, rectifier RF and direct-current reactor DCL, the switching element TH7 turns ON by a signal from a gate circuit. Since sudden short current I flows through primary and secondary windings N1 and N2, Joule heat increases and an arc can start smoothly, improving start characteristics. On detecting a current through a main circuit, a detection circuit turns the gate circuit OFF to turn element TH7 OFF, so that a welding current will flow only primary winding N1 and will be in a stationary state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12111278A JPS5548477A (en) | 1978-09-30 | 1978-09-30 | Direct-current arc welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12111278A JPS5548477A (en) | 1978-09-30 | 1978-09-30 | Direct-current arc welding |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5548477A true JPS5548477A (en) | 1980-04-07 |
Family
ID=14803170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12111278A Pending JPS5548477A (en) | 1978-09-30 | 1978-09-30 | Direct-current arc welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5548477A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015211976A (en) * | 2014-05-01 | 2015-11-26 | 株式会社ダイヘン | Weldment electric power unit and method for controlling weldment electric power unit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4217702Y1 (en) * | 1964-03-10 | 1967-10-13 |
-
1978
- 1978-09-30 JP JP12111278A patent/JPS5548477A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4217702Y1 (en) * | 1964-03-10 | 1967-10-13 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015211976A (en) * | 2014-05-01 | 2015-11-26 | 株式会社ダイヘン | Weldment electric power unit and method for controlling weldment electric power unit |
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