GB1453366A - Electrode assembly for plasma torch - Google Patents

Electrode assembly for plasma torch

Info

Publication number
GB1453366A
GB1453366A GB2060974A GB2060974A GB1453366A GB 1453366 A GB1453366 A GB 1453366A GB 2060974 A GB2060974 A GB 2060974A GB 2060974 A GB2060974 A GB 2060974A GB 1453366 A GB1453366 A GB 1453366A
Authority
GB
United Kingdom
Prior art keywords
insert
electrode assembly
chamber
holder
plasma
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.)
Expired
Application number
GB2060974A
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.)
V N I PK I T I ELEKTROSVAROCHN
Original Assignee
V N I PK I T I ELEKTROSVAROCHN
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
Priority to DE2422322A priority Critical patent/DE2422322C3/en
Application filed by V N I PK I T I ELEKTROSVAROCHN filed Critical V N I PK I T I ELEKTROSVAROCHN
Priority to GB2060974A priority patent/GB1453366A/en
Priority to FR7419317A priority patent/FR2274196A1/en
Publication of GB1453366A publication Critical patent/GB1453366A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0205—Non-consumable electrodes; C-electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3436—Hollow cathodes with internal coolant flow
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3442—Cathodes with inserted tip
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/44—Plasma torches using an arc using more than one torch

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)

Abstract

1453366 Welding by fusion VSES NI PROEKTNO-KONSTRUKT I TEKHNOL INST ELEKTROSVAROCH OBORUDOVANIA 9 May 1974 20609/74 Heading B3R [Also in Divisions H3-H5] A non-consumable plasma torch electrode assembly comprises a water cooled rod like electrically conductive copper holder 1, containing a refractory metal insert 2 at one end, a chamber 3 symmetrical about the longitudinal axis of the assembly being provided in the holder 1 and being bounded on one side by a central portion only of the insert 2, the chamber being filled with a substance of lower thermal conductivity than the material of the holder 1 so that the central portion of the insert 2 is cooled less than the peripheral portion which is in direct contact with the holder 1. Thus in use the arc is centred on the hotter central zone of the insert 32 and does not tend to migrate to the cooler peripheral zone. The refractory metal of the insert may be a refractory metal of groups IV, V and VI, or an alloy of these metals. Specified alloys are Ta 73%/Hf 25%/Mo 2% : Hf 99%/ Mo 1% : W 97%/La 3%. The material filling the chamber 3 may be titanium, steel, pig iron, air or argon. The plasma torch may be a d.c. transferred arc torch in which the electrode assembly is supported in a hollow water cooled nozzle by an insulating spacer provided with longitudinal channels for introduction of plasma forming gas to the end of the electrode assembly. In Fig. 4 (not shown) two plasma torches with electrode assemblies as described connected in series are supplied from a d.c. source to produce a heated plasma for surfacing an adjacent workpiece. The electrode assembly if connected to the positive pole has a gas filled chamber behind the insert and the electrode assembly connected to the negative pole has a solid filled chamber. The torch can be used for welding, surfacing, surface finishing and cutting metals.
GB2060974A 1974-05-09 1974-05-09 Electrode assembly for plasma torch Expired GB1453366A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2422322A DE2422322C3 (en) 1974-05-09 1974-05-08 Electrode for a plasma torch
GB2060974A GB1453366A (en) 1974-05-09 1974-05-09 Electrode assembly for plasma torch
FR7419317A FR2274196A1 (en) 1974-05-09 1974-06-05 PLASMA GUN ELECTRODE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2060974A GB1453366A (en) 1974-05-09 1974-05-09 Electrode assembly for plasma torch

Publications (1)

Publication Number Publication Date
GB1453366A true GB1453366A (en) 1976-10-20

Family

ID=10148769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2060974A Expired GB1453366A (en) 1974-05-09 1974-05-09 Electrode assembly for plasma torch

Country Status (3)

Country Link
DE (1) DE2422322C3 (en)
FR (1) FR2274196A1 (en)
GB (1) GB1453366A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365810A (en) * 2000-06-21 2002-02-27 Inocon Technologie Gmbh Reverse polarity dc plasma arc welding

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU974613A1 (en) * 1978-06-28 1982-11-15 Специальное Конструкторско-Технологическое Бюро С Опытным Производством Института Физики Ан Бсср Plasma oscillator
ZW5683A1 (en) * 1982-03-05 1983-06-01 Mineral Tech Council The protection of water cooled plasma generating devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365810A (en) * 2000-06-21 2002-02-27 Inocon Technologie Gmbh Reverse polarity dc plasma arc welding
GB2365810B (en) * 2000-06-21 2004-05-19 Inocon Technologie Gmbh Welding method and apparatus

Also Published As

Publication number Publication date
DE2422322B2 (en) 1979-06-28
FR2274196B1 (en) 1976-10-15
DE2422322C3 (en) 1980-03-13
DE2422322A1 (en) 1975-11-20
FR2274196A1 (en) 1976-01-02

Similar Documents

Publication Publication Date Title
GB1151873A (en) Improvements in Metal Deposition.
GB1276110A (en) Method of and device for plasma arc metal working
GB892448A (en) Arc torch
US3944778A (en) Electrode assembly of plasmatron
GB1117607A (en) Improvements in or relating to arc welding
GB1307507A (en) Fabrication of nuclear fuel assemblies
GB1101036A (en) Electric arc welding
GB866106A (en) Improved arc working process and apparatus
GB1453366A (en) Electrode assembly for plasma torch
GB1223162A (en) Improvements in electrodes for electric arc furnaces
GB1027504A (en) Improvements in and relating to electric welding
US2510180A (en) Method of making tubes
GB1109667A (en) Improvements in or relating to the surface melting of metal bodies
US2185496A (en) Process of deseaming blooms, billets, sheet bars, and the like
GB961117A (en) Method and apparatus for refining surface contaminated metals
GB1496744A (en) Weld metal
GB769879A (en) Inert gas-shielded arc welding torch with water-cooled non-consumable electrode and method of welding therewith
FR2437760A1 (en) Electric contact for molten metal, esp. in arc furnaces - where contact has enlarged rear portion contg. several chambers through which coolant is circulated
GB580794A (en) Improvements in and relating to fusion welding
GB1439004A (en) Welding of copper
GB1320378A (en) Method of welding metals
US3610868A (en) Submerged-welding method
SU846183A1 (en) Non-meltable electrode for arc processes
GB2061163A (en) Method of and an apparatus for marking metal objects
GB772132A (en) Gas shielded multi-arc welding

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee