JPS54123542A - Magnetic drive type controlling method for arc - Google Patents
Magnetic drive type controlling method for arcInfo
- Publication number
- JPS54123542A JPS54123542A JP2987878A JP2987878A JPS54123542A JP S54123542 A JPS54123542 A JP S54123542A JP 2987878 A JP2987878 A JP 2987878A JP 2987878 A JP2987878 A JP 2987878A JP S54123542 A JPS54123542 A JP S54123542A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- exciting
- face
- blowout
- hereby
- 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
Abstract
PURPOSE: To prevent the blowout of the arc flame from the surface and back face of the metallic material, and to improve the heating efficiency, by arranging exciting coils on the surface and back face of metallic material, and by controlling the ratio of supplied currents correspondingly to the temperature change in the end face or the moving speed of the arc.
CONSTITUTION: The exciting coils 3a, 3b, are arranged respectively on the front side and the back side, and the ratio of their exciting currents is controlled; hereby, the magnetic flux distribution uniform in the direction of thickness of the gap is maintained. In case of butting of two pipe materials, the arc flame is in danger of blowing off outward depending on the increase of the rotational speed at the lattr half period of heating; hence, the current of the exciting coil on the outer side is increased so as to raise the magnetic flux density on the outer side for the purpose of making the force of magnetic arc blow to resist against the centrifugal force; hereby, the blowout of the arc flame is restrained. The control of the exciting current for the outer face is carried out by either one of the temperature detector, the photoelectric type arc detector, or the sequential time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2987878A JPS54123542A (en) | 1978-03-17 | 1978-03-17 | Magnetic drive type controlling method for arc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2987878A JPS54123542A (en) | 1978-03-17 | 1978-03-17 | Magnetic drive type controlling method for arc |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54123542A true JPS54123542A (en) | 1979-09-25 |
Family
ID=12288226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2987878A Pending JPS54123542A (en) | 1978-03-17 | 1978-03-17 | Magnetic drive type controlling method for arc |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54123542A (en) |
-
1978
- 1978-03-17 JP JP2987878A patent/JPS54123542A/en active Pending
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