JPS6445099A - Plasma torch - Google Patents

Plasma torch

Info

Publication number
JPS6445099A
JPS6445099A JP62202678A JP20267887A JPS6445099A JP S6445099 A JPS6445099 A JP S6445099A JP 62202678 A JP62202678 A JP 62202678A JP 20267887 A JP20267887 A JP 20267887A JP S6445099 A JPS6445099 A JP S6445099A
Authority
JP
Japan
Prior art keywords
discharge
electrode
nozzle
main arc
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
Application number
JP62202678A
Other languages
Japanese (ja)
Inventor
Shunichi Sakuragi
Toshiya Shintani
Iwao Kurokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP62202678A priority Critical patent/JPS6445099A/en
Publication of JPS6445099A publication Critical patent/JPS6445099A/en
Pending legal-status Critical Current

Links

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  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)

Abstract

PURPOSE:To have stable plasma jet with high output by interposing an effective swirler between an electrode member and an electrode nozzle, and supplying a non-oxidative working gas into the discharge space. CONSTITUTION:Pilot arc discharge is made between an electrode nozzle 10 and an electrode member 20, followed by main arc discharge to form a main arc column 100. N2 gas as a non-oxidative working gas jetted out of a swirl nozzle hole 31 of a swirler 30 becomes a strong swirling stream in the hole 31, and sinks in a recess 12 of the electrode nozzle 10 as shown by arrow Q. At this time, the N2 gas generates swirl in the vertically stretching discharge space 200 from the electrode member 20 to nozzle hole 11, and the main arc column 100 is held in restraint in the low pressure region of the swirl stably. This prolongs the discharge gap length, and the discharge space 200 is filled with non-oxidative N2 gas even though the discharge point becomes high temp. at the time of main arc discharge, that suppresses oxidation and combustion, and as a result the electrode nozzle 10 and electrode member 20 are prevented from fusion damage.
JP62202678A 1987-08-14 1987-08-14 Plasma torch Pending JPS6445099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62202678A JPS6445099A (en) 1987-08-14 1987-08-14 Plasma torch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62202678A JPS6445099A (en) 1987-08-14 1987-08-14 Plasma torch

Publications (1)

Publication Number Publication Date
JPS6445099A true JPS6445099A (en) 1989-02-17

Family

ID=16461343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62202678A Pending JPS6445099A (en) 1987-08-14 1987-08-14 Plasma torch

Country Status (1)

Country Link
JP (1) JPS6445099A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174980A (en) * 1989-09-25 1991-07-30 Koike Sanso Kogyo Co Ltd Plasma torch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03174980A (en) * 1989-09-25 1991-07-30 Koike Sanso Kogyo Co Ltd Plasma torch

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