JPS5550968A - Plasma arc welding starting method - Google Patents
Plasma arc welding starting methodInfo
- Publication number
- JPS5550968A JPS5550968A JP12286378A JP12286378A JPS5550968A JP S5550968 A JPS5550968 A JP S5550968A JP 12286378 A JP12286378 A JP 12286378A JP 12286378 A JP12286378 A JP 12286378A JP S5550968 A JPS5550968 A JP S5550968A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- pilot arc
- pilot
- welding
- gas
- 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 surely transfer the pilot arc of plasma welding to the main arc and eliminate welding interruption or the like by simultaneously increasing plasma gas or pilot arc current value immediately before the shift to the main arc at the producing of the pilot arc.
CONSTITUTION: In the case of a pilot arc intermission system of plasma welding, the plasma gas flow B is flowed at V1l/mm upon welding start. The V1l/mm is made larger (V1=1.2W4V2) than the flow (broken line) of conventional methods and the gas flow V2l/mm at the execution of welding. At the same time, high frequency waves are applied between the electrode and restrained chip to apply a pilot voltage and produce pilot arc. The increased plasma gas does not stagnate between the electrode and restrained chip and the pilot arc arrives at the objects to be welded, thus surely shifting to the main arc. In the case of a continuous system of the pilot arc, the specified quantity of the pilot arc current is increased simultaneously with gas quantity and the shift to the main arc is made sure by the synergistic effect thereof, thus the starting failure occuring in the gas stagnation of conventional methods is eliminated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12286378A JPS5550968A (en) | 1978-10-05 | 1978-10-05 | Plasma arc welding starting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12286378A JPS5550968A (en) | 1978-10-05 | 1978-10-05 | Plasma arc welding starting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5550968A true JPS5550968A (en) | 1980-04-14 |
Family
ID=14846492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12286378A Pending JPS5550968A (en) | 1978-10-05 | 1978-10-05 | Plasma arc welding starting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5550968A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60111770A (en) * | 1983-11-19 | 1985-06-18 | Daido Steel Co Ltd | Plasma build-up welding method |
JPS6163366A (en) * | 1984-09-03 | 1986-04-01 | Hitachi Seiko Ltd | Plasma cutting equipment |
JPS61276768A (en) * | 1985-05-31 | 1986-12-06 | Toa Seiki Kk | Ignition method for main plasma arc in non-key hole type plasma arc welding |
JPS63194867A (en) * | 1987-02-06 | 1988-08-12 | Nippon Steel Weld Prod & Eng Co Ltd | Method for generating pilot arc or plasma torch |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5089237A (en) * | 1973-12-11 | 1975-07-17 | ||
JPS5244584U (en) * | 1975-09-23 | 1977-03-29 |
-
1978
- 1978-10-05 JP JP12286378A patent/JPS5550968A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5089237A (en) * | 1973-12-11 | 1975-07-17 | ||
JPS5244584U (en) * | 1975-09-23 | 1977-03-29 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60111770A (en) * | 1983-11-19 | 1985-06-18 | Daido Steel Co Ltd | Plasma build-up welding method |
JPS6163366A (en) * | 1984-09-03 | 1986-04-01 | Hitachi Seiko Ltd | Plasma cutting equipment |
JPH049637B2 (en) * | 1984-09-03 | 1992-02-20 | ||
JPS61276768A (en) * | 1985-05-31 | 1986-12-06 | Toa Seiki Kk | Ignition method for main plasma arc in non-key hole type plasma arc welding |
JPS63194867A (en) * | 1987-02-06 | 1988-08-12 | Nippon Steel Weld Prod & Eng Co Ltd | Method for generating pilot arc or plasma torch |
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