EP1166942A2 - Torche plasma - Google Patents

Torche plasma Download PDF

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Publication number
EP1166942A2
EP1166942A2 EP01890189A EP01890189A EP1166942A2 EP 1166942 A2 EP1166942 A2 EP 1166942A2 EP 01890189 A EP01890189 A EP 01890189A EP 01890189 A EP01890189 A EP 01890189A EP 1166942 A2 EP1166942 A2 EP 1166942A2
Authority
EP
European Patent Office
Prior art keywords
electrode
nozzle
pole
voltage source
rod
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.)
Granted
Application number
EP01890189A
Other languages
German (de)
English (en)
Other versions
EP1166942B1 (fr
EP1166942A3 (fr
Inventor
Gerhard Schwankhart
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.)
Inocon Technologie GmbH
Original Assignee
Inocon Technologie GmbH
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 Inocon Technologie GmbH filed Critical Inocon Technologie GmbH
Priority to AT01890189T priority Critical patent/ATE335565T1/de
Publication of EP1166942A2 publication Critical patent/EP1166942A2/fr
Publication of EP1166942A3 publication Critical patent/EP1166942A3/fr
Application granted granted Critical
Publication of EP1166942B1 publication Critical patent/EP1166942B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05H1/44—Plasma torches using an arc using more than one torch

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • the aim of the invention is to overcome these disadvantages avoid and a facility of the type mentioned propose a high welding speed even when allows difficult alloys and with that too it can be ensured that oxide layers formed be removed.
  • the proposed measures make it possible the two rod-shaped electrodes with different poles to connect the voltage sources. This allows you to Plasma pulses with one with the plus pole one Electrode connected to the voltage source are generated Oxide layers ripped open and with the following Plasma pulses with the one with the negative pole Voltage source connected and therefore connected as a cathode Electrode are generated, the base material clean and with large penetration depth are welded, whereby very result in narrow and smooth seams. It can be done with a very high welding speed. Through the Locking the switching devices, each only Allow voltage pulses of approximately 1 to 5 milliseconds ensured that only one electrode was applied at a time can be.
  • Each plasma arc can be ignited by means of a high frequency pulse occur when the level of voltage the individual voltage pulses Breakdown voltage of the distance between the electrode and their respective counterelectrode.
  • the ignition but can also by correspondingly high, the respective Breakdown voltage exceeding voltage pulses themselves to be triggered.
  • claims 9 and 11 effect one Constriction of the plasma, or avoid expanding it due to the friction of the plasma in the air with escapes at high speed, so that a very high concentration the energy is achieved.
  • a receptacle 1 which consists of an electrical insulating material is made.
  • this shot 1 are two holders 2, at the lower ends of electrodes 3, 4 a temperature-resistant material such as Tungsten, used.
  • the holder 2 are made of an electrically highly conductive Material made and are with a central bore 5th provided that in the upper and lower area via radial Bores 6 are connected to chambers 7, 8, of which the Chambers 7, each with a gas channel 109, 109 ', via the plasma gas is fed separately, are connected, and the chambers 8 with one outflow nozzle 9 9 'are connected.
  • nozzles 9, 9 have conical inner walls, the inner wall of the nozzle 9 being substantially parallel to the tapered end portion of the electrode 3, the free End of the electrode 3 can be flattened.
  • the electrode 4 is in contrast to the electrode 3 essentially blunt educated.
  • cooling channel 10 in the receptacle 1 provided that of an inlet 11 to one of the holder 2 of the Electrode 4 penetrates and divided by annular space 12 in two branch channels (Fig. 2) to another from the holder 2 of the Electrode 3 passes through annular space 13 and from this to one Spout 14 leads.
  • connection of the two electrodes 3, 4, or their holder 2 can screw caps 15, or if the Gas channels 109, 109 'have electrically conductive walls, about these are done. In the latter case, the connection can be made via Connection nipples via which gas is supplied are made.
  • a tubular guide 16 between the nozzles 9, 9 ' provided that to serve as an additional material Wire is provided.
  • the guide 16 is cranked out.
  • the recording 1 be made very narrow.
  • the electrode 3 runs in the position of use of the receptacle 1 in essentially vertical and the electrode 4 closes with this an acute angle which is usually 20 ° to 70 ° can.
  • connection head 18 In this connection head 18 are spring-loaded Nipple 20 held axially displaceable, one of which Water supply line 21 and a water discharge line 22 for supply and Removal of cooling water are connected, this spring-loaded connecting nipple 20 when the receptacle is connected 1 engage in the inlet or outlet 11, 14 of the same. Furthermore, 18 are fixed connection nipples 23 in this connection head provided on which plasma gas, e.g. Helium, leading Gas lines 24 are connected. The fixed Connection nipples 23 engage with the receptacle 1 connected Inlets 25 of the gas channels 109, 109 'of the receptacle 1. there are, as with the inlet and outlet 11, 14 in the inlets 25 O-rings used for sealing.
  • plasma gas e.g. Helium
  • connection head 18 arranged pin 26 held in a corresponding Bore 27 engages a receptacle 1. This is ensured that a connection of a recording 1 to the Connection head only in a certain position, in which one correct flow through the gas and cooling channels is given, is possible.
  • connection head 18 can with different Electrodes 3, 4 equipped receptacles 1 are connected, such a change can be carried out very easily can.
  • FIG. 7 shows a detail of the nozzle body 9 for an electrode 3, which is a conical, or substantially has a frustoconical end.
  • the plasma gas flowing through these cold gas channels causes cooling of the nozzle body 9 and causes a further constriction of the exiting from the nozzle 9 Plasma and thus a reduction in the focal spot and thus an increase in energy concentration in this.
  • the Chamber 8 is supplied with plasma gas via a Gas channel 109, 109 ', the upper radial bores 6 of the holder 2, its central bore 5 and the lower radial bores 6th
  • Fig. 8 shows schematically the connection of the device according to the invention.
  • the electrodes 3, 4 with one pole each, one voltage source 31, 32 connected, the respective second pole of each of which has a switching device 33, 34 is connected to a workpiece 30.
  • the two switching devices 33, 34 locked against each other so that only one Switching device 33 or 34 can be switched through. There are only short for the two switching devices 33, 34 Switching times are provided so that the electrodes 3, 4 only impulsed.
  • Typical values are e.g. a Current application of approx. 170 A for a time of approx. 15ms and a pause of approx. 3ms. During this time switches the switching device 33 through and with the plus pole Electrode 4 connecting current source 31 is approx. 250 A for about 3ms applied.
  • Insert 1 insert two electrodes 3 and both with the Minus pole each to connect a DC voltage source 32 and to apply these essentially alternately, whereby however, overlap times can also be provided. There on this way the load of each electrode 3 accordingly is small, electrodes 3 with a small diameter can be used be made, which makes the recording very narrow can.
  • the embodiment according to FIG. 10 differs from that according to FIGS. 1 and 2 in that in the over the gas channels 109, 109 'in connection with the gas connections standing chambers 8 helical ribs 35 are arranged between which are helical channels remain, via which the plasma gas flows to the nozzles 9, 9 '.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)
EP01890189A 2000-06-21 2001-06-19 Torche plasma Expired - Lifetime EP1166942B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT01890189T ATE335565T1 (de) 2000-06-21 2001-06-19 Plasmabrenner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0045300U AT4667U1 (de) 2000-06-21 2000-06-21 Plasmabrenner
AT4532000 2000-06-21

Publications (3)

Publication Number Publication Date
EP1166942A2 true EP1166942A2 (fr) 2002-01-02
EP1166942A3 EP1166942A3 (fr) 2004-01-02
EP1166942B1 EP1166942B1 (fr) 2006-08-09

Family

ID=3491008

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890189A Expired - Lifetime EP1166942B1 (fr) 2000-06-21 2001-06-19 Torche plasma

Country Status (4)

Country Link
US (1) US6410879B1 (fr)
EP (1) EP1166942B1 (fr)
AT (1) AT4667U1 (fr)
CA (1) CA2350977C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434000B (zh) * 2008-12-13 2011-03-23 东方电气集团东方汽轮机有限公司 小内径深孔等离子喷焊枪

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9233432B2 (en) * 2007-02-12 2016-01-12 Yu Ming Zhang Arc welder and related system
US9831070B1 (en) 2017-06-15 2017-11-28 Enercon Industries Corporation Surface treater with expansion electrode arrangement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691373A (en) * 1950-04-28 1953-05-13 Gen Electric Co Ltd Improvements in and relating to processes for electric arc welding and to apparatus for carrying out such processes
FR2062768A5 (en) * 1969-10-01 1971-06-25 British Railways Board Plasma torch
FR2229493A1 (en) * 1973-05-16 1974-12-13 Pk Tekhno Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle
GB1384730A (fr) * 1971-11-19 1975-02-19 Rikagaku Kenkyusho Plasma Jet
US3931489A (en) * 1973-11-05 1976-01-06 Kabel-Und Metallwerke Gutehoffnungshuette Aktiengesellschaft Multiarc seam welding apparatus for thin metal sheet
US4107507A (en) * 1973-06-06 1978-08-15 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Arc welding process and apparatus
US4119828A (en) * 1977-02-08 1978-10-10 Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky I Tekhnologichesky Institut Elektrosvarochnogo Oborudovania Method of plasma multiarc welding by permanently burning direct-current arcs
US5332885A (en) * 1991-02-21 1994-07-26 Plasma Technik Ag Plasma spray apparatus for spraying powdery or gaseous material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926210A1 (de) 1979-06-29 1981-02-12 Maschf Augsburg Nuernberg Ag Verfahren und vorrichtung zum elektrischen lichtbogenschweissen
US5798497A (en) * 1995-02-02 1998-08-25 Battelle Memorial Institute Tunable, self-powered integrated arc plasma-melter vitrification system for waste treatment and resource recovery
WO1996039794A1 (fr) * 1995-06-05 1996-12-12 Tohoku Unicom Co., Ltd. Alimentation servant a une decharge par electrodes multiples
JPH11117845A (ja) 1997-10-11 1999-04-27 Masahide Ichikawa 内燃機関に於ける複数点火パルス発生回路
US6121571A (en) * 1999-12-16 2000-09-19 Trusi Technologies Llc Plasma generator ignition circuit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB691373A (en) * 1950-04-28 1953-05-13 Gen Electric Co Ltd Improvements in and relating to processes for electric arc welding and to apparatus for carrying out such processes
FR2062768A5 (en) * 1969-10-01 1971-06-25 British Railways Board Plasma torch
GB1384730A (fr) * 1971-11-19 1975-02-19 Rikagaku Kenkyusho Plasma Jet
FR2229493A1 (en) * 1973-05-16 1974-12-13 Pk Tekhno Strip welding twin nozzle plasma gun - with opposed alternately pulsed current in either nozzle
US4107507A (en) * 1973-06-06 1978-08-15 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Arc welding process and apparatus
US3931489A (en) * 1973-11-05 1976-01-06 Kabel-Und Metallwerke Gutehoffnungshuette Aktiengesellschaft Multiarc seam welding apparatus for thin metal sheet
US4119828A (en) * 1977-02-08 1978-10-10 Vsesojuzny Nauchno-Issledovatelsky Proektno-Konstruktorsky I Tekhnologichesky Institut Elektrosvarochnogo Oborudovania Method of plasma multiarc welding by permanently burning direct-current arcs
US5332885A (en) * 1991-02-21 1994-07-26 Plasma Technik Ag Plasma spray apparatus for spraying powdery or gaseous material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101434000B (zh) * 2008-12-13 2011-03-23 东方电气集团东方汽轮机有限公司 小内径深孔等离子喷焊枪

Also Published As

Publication number Publication date
US6410879B1 (en) 2002-06-25
AT4667U1 (de) 2001-10-25
CA2350977C (fr) 2009-05-12
EP1166942B1 (fr) 2006-08-09
CA2350977A1 (fr) 2001-12-21
US20020033386A1 (en) 2002-03-21
EP1166942A3 (fr) 2004-01-02

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