JPS5568179A - Plasma arc starting method - Google Patents
Plasma arc starting methodInfo
- Publication number
- JPS5568179A JPS5568179A JP13986978A JP13986978A JPS5568179A JP S5568179 A JPS5568179 A JP S5568179A JP 13986978 A JP13986978 A JP 13986978A JP 13986978 A JP13986978 A JP 13986978A JP S5568179 A JPS5568179 A JP S5568179A
- Authority
- JP
- Japan
- Prior art keywords
- current
- gas
- arc
- time
- main
- 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 suppress the production of double arcs at the starting of main arc and prevent damaging of nozzle by adding dissimilar operating gas after the start of the plasma arc produced in the operating gas flow.
CONSTITUTION: Operating gas PG is beforehand supplied and a main arc 4 is produced at the welding work start point a. While the main current thereof is being detected, the current is shifted from the cutting start current Ip1 of small current to plasma cutting main current Ip. This current shifting involves increasing the current from the current Ip1 to the current Ip during the slow up time Ta and this time Ta is arbitrarily variable. For the gas PG, the operating gas of the same gas is supplied as the initial operating gas PG1 and at the time a, the second operating gases PG2 and PG3' are increased within the shift mode range of the time Ta. Namely, the gas PG is increased in the small current region and therefore rapid unstabilizing of the arc is obviated and the stable main arc shifting and the prevention of the formation of double arcs 6, 6' are accomplished. In the figure, 1 denotes a torch, 2 an electrode, 3 a base metal and 5 a nozzle, respectively.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13986978A JPS5568179A (en) | 1978-11-15 | 1978-11-15 | Plasma arc starting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13986978A JPS5568179A (en) | 1978-11-15 | 1978-11-15 | Plasma arc starting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5568179A true JPS5568179A (en) | 1980-05-22 |
Family
ID=15255441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13986978A Pending JPS5568179A (en) | 1978-11-15 | 1978-11-15 | Plasma arc starting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5568179A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009095843A (en) * | 2007-10-15 | 2009-05-07 | Daihen Corp | Method of controlling arc start in plasma arc welding |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931562A (en) * | 1972-07-25 | 1974-03-22 | ||
JPS53119252A (en) * | 1977-03-29 | 1978-10-18 | Origin Electric | Plasma arc cutting start method |
-
1978
- 1978-11-15 JP JP13986978A patent/JPS5568179A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4931562A (en) * | 1972-07-25 | 1974-03-22 | ||
JPS53119252A (en) * | 1977-03-29 | 1978-10-18 | Origin Electric | Plasma arc cutting start method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009095843A (en) * | 2007-10-15 | 2009-05-07 | Daihen Corp | Method of controlling arc start in plasma arc welding |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56131071A (en) | All position tig welding method | |
JPS5788972A (en) | Two electrode arc welding method | |
CA2330069A1 (en) | Method and apparatus for improving plasma arc consumable life | |
JPS5568179A (en) | Plasma arc starting method | |
JPS5527417A (en) | Vertical downward build-up welding method | |
JPS55117575A (en) | Arc welding method | |
JPS555125A (en) | Plasma arc build-up welding method by powder metals or other | |
SU1699739A1 (en) | Method of consumable electrode multiarc welding | |
JPS56144865A (en) | Surface hardening build-up welding method | |
JPS5554271A (en) | Arc starting method in dcsp-tig welding of aluminum material | |
JPS55120481A (en) | Multielectrode welding method | |
SU659325A1 (en) | Method of tuning the operating duty at plasma-arc welding | |
JPS57165174A (en) | Arc starting method | |
JPS5533833A (en) | High speed inclined position submerged arc welding method | |
JPS5420932A (en) | High speed welding method | |
JPS54110947A (en) | Reverse polar plasma arc padding welding | |
JPS54159361A (en) | Preventing method for crack at starting point and toe of weld in mig welding | |
JPS52147513A (en) | Smelting method of low nitrogen steel at steel making arc furnace | |
JPS53131242A (en) | Inert gas arc welding method and welding nozzle | |
JPS546830A (en) | Tig arc welding method | |
SU572353A1 (en) | Method of plasma-arc surface cutting | |
JPS53124146A (en) | Plasma welding method for high nickel steel | |
JPS5577976A (en) | Pulse arc welding method | |
JPS57209778A (en) | Gas shielded arc welding method | |
JPS5645266A (en) | Gas fusion cutting starting method |