EP0923276B1 - Elektrodenkörper/Elektrodenhalter Einheit für Plasmabrenner - Google Patents

Elektrodenkörper/Elektrodenhalter Einheit für Plasmabrenner Download PDF

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Publication number
EP0923276B1
EP0923276B1 EP98403072A EP98403072A EP0923276B1 EP 0923276 B1 EP0923276 B1 EP 0923276B1 EP 98403072 A EP98403072 A EP 98403072A EP 98403072 A EP98403072 A EP 98403072A EP 0923276 B1 EP0923276 B1 EP 0923276B1
Authority
EP
European Patent Office
Prior art keywords
electrode
electrode body
plasma torch
holder
electrode holder
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 - Lifetime
Application number
EP98403072A
Other languages
English (en)
French (fr)
Other versions
EP0923276A1 (de
Inventor
Gérard Marhic
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.)
Lincoln Electric Co France SA
Original Assignee
La Soudure Autogene Francaise
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 La Soudure Autogene Francaise filed Critical La Soudure Autogene Francaise
Publication of EP0923276A1 publication Critical patent/EP0923276A1/de
Application granted granted Critical
Publication of EP0923276B1 publication Critical patent/EP0923276B1/de
Anticipated expiration legal-status Critical
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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
    • H05H1/34—Details, e.g. electrodes, nozzles
    • 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
    • H05H1/3478—Geometrical details
    • 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
    • H05H1/38—Guiding or centering of 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
    • H05H1/3442—Cathodes with inserted tip

Definitions

  • the present invention relates to a set electrode body / electrode holder for plasma torch, a plasma torch provided with such an assembly and at a plasma arc welding, cutting or marking process likely to implement such a torch.
  • plasma torches consist of a torch body with, in its rear part, connections to supply pipes in fluid, especially in plasma gas, and in current electric and, in its front part, means of mounting the electrode body and the nozzle.
  • the torch can be provided with means assembly / disassembly, as described in EP-A-599709.
  • This document teaches a plasma torch having a torch support with a first support face and fluid circuits; a unitary torch body assembly with an electrode, a nozzle, fluid circuits and a second support face; and assembly means for quickly assemble the unitary torch body assembly to the torch holder so that the first side support comes into axial support against the second support face and that the fluid circuits of the torch holder come to communicate with the fluid circuits of the unitary torch body assembly.
  • the actual electrode is generally carried by a support element, also called electrode body, which furthermore performs a function of radiator by allowing the evacuation of part of the heat given off during welding, cutting or plasma marking, by heat exchange with a cooling.
  • the electrode body has a shape of threaded sleeve of circular section. Tapping practiced on part of the peripheral surface inside of the sleeve ensures fixing by screwing the electrode body onto the electrode holder, which carries an additional thread on its outer circumference.
  • the aim of the present invention is therefore to alleviate the aforementioned problems by proposing a set male / female for plasma torch whose structure allows, in particular, to improve the centering of the electrode body on the electrode holder without require an increase in the length of the threads fixation.
  • the invention also relates to a torch with plasma as given in claims 9 to 11 and on an automatic welding, cutting or plasma arc marking equipped with a plasma torch.
  • the invention further relates to a method of cutting, welding or plasma arc marking likely to use a plasma torch according to the invention.
  • FIG. 1 shows a diagram of a section longitudinal of part of the distal end of a male / female assembly fitted to a plasma torch according to prior art.
  • This male / female set 1 consists an electrode holder 4 whose distal end 4 'carries a 5 'thread on part of its peripheral wall external, of an electrode body 3 carrying a thread 5 fitted on part of its internal peripheral wall from its proximal end 3 'and supporting, in addition, the actual electrode 2.
  • the electrode body 3 has substantially the shape of a sleeve and is fixed only by screwing on the electrode holder 4 via thread 5 'and tapping 5 carried, respectively, by said distal 4 'and proximal 3' ends.
  • the threaded portions 5 'and threaded 5 not only provide centering and positioning of the electrode body 3 on the electrode holder 4, but also their maintenance in contact with one with the other.
  • the dip tube 6 ensures the routing a coolant which sweeps the internal walls of electrode body 3 and electrode holder 4, so as to ensure cooling of these by heat exchange.
  • the body electrode 3 is made of a metal or an alloy metallic, for example a copper alloy.
  • the electrode 2 is an electrode for cutting, plasma arc welding or marking which may or may not, depending on the case, include a recess or protrusion of its downstream end, which can be made in one material chosen in particular from hafnium, zirconium and tungsten.
  • the male / female assembly 1 represented in FIG. 1 has several drawbacks, in particular of achieving imperfect or incorrect centering of the electrode body 3 on the electrode holder 4, since said centering is only ensured by the threaded parts 5 and 5 '.
  • Figures 2 to 8 show, for their part, electrode holder 3 or electrode body 4 diagrams according to the present invention taken in isolation or in association in a male / female set.
  • FIG. 3 represents a view in longitudinal section of an identical male / female assembly to that of FIG. 2, but angularly offset by one angle of about 45 °, as shown in Figure 3a.
  • a male / female assembly 11 comprising an electrode 2 carried by an electrode body 3, said electrode electrode body 3 being fixed by means of its 3 'proximal end, by screwing on the electrode holder 4 by means of the 15 'threaded and tapped parts 15.
  • the internal thread 15 is arranged on the proximal part of the internal wall of the electrode body 3 (see figures 4 and 5) and the thread 15 'is carried by part of the outer peripheral wall of electrode holder 4 (see figure 6).
  • the inside of the electrode body 3 has been machined so as to present, in cross section, a hexagonal shape (H), near its end proximal 3 ', as shown schematically in Figure 5.
  • a 4 "template has been installed on the distal end 4 'of the electrode holder 4 (see figure 6) to be able to adapt to the new configuration internal of the electrode body 3. More precisely, as it can be seen in Figures 2, 3 and 4, the distal end 4 ′ of the electrode holder 4 has been extended towards electrode 2 and template 4 " located on its present outer wall, in section transverse, at least locally complementary to that of the inner wall of the body electrode 3, that is, here, a shape also hexagonal, as shown diagrammatically in FIG. 6A.
  • recesses 8 and / or the 4 "gauge is not necessarily a symmetrical shape, such as in particular polygonal shapes convex or concave or multi-lobed forms.
  • the recesses 8 and the template 4 can take on more or less complex forms, partially or completely complementary to each other, in the measure that the relative sliding by nesting of the electrode holder and electrode body is assured.
  • a 15 'thread was fitted on the wall external device of said electrode holder 4, so able to cooperate, by screwing, with thread 15 carried by the electrode body 3.
  • FIGS. 7 and 8 The placement of the electrode body 3 on the electrode holder 4 is detailed in FIGS. 7 and 8.
  • This implementation consists of a phase of mounting ( Figure 7) and a tightening phase (Figure 8).
  • the assembly phase ( Figure 7) we introduce the electrode holder (4) inside the sleeve that constitutes the electrode body 3, according to a movement of translation until the start of the 15 'thread, said 15 'thread serving as a stop.
  • the phase tightening ( Figure 8), we operate a proper screwing 15 'threaded and tapped / hollowed out parts 15 one with the other.
  • the centering of the electrode body 3 on the electrode holder 4 is obtained by guidance / positioning of the 4 "template carried by the electrode holder 4 by the internal peripheral wall of the housing 16, that is to say of the part of the electrode holder 3 having a diameter D2, as shown in Figure 4.
  • the diameter D1 of the part threaded / machined 15 is less than the diameter D2 of the housing 16 located between said threaded portion 15 and the bottom of the electrode body 3 (see Figure 4).
  • orifices 9, here 4 in number have been made within the end 4 'of the electrode holder 4, which 9 holes allow the flow of cooling channeled through channel 6 'of the tube plunger 6.
  • This cooling flow can thus go in contact with the internal wall of the electrode body 3 in order to ensure efficient cooling thereof and better than the cooling obtained conventionally.
  • FIG. 4 is a diagram, in longitudinal section, an electrode body 3 similar to that of FIGS. 2 and 3, shown not attached to an electrode holder.
  • the electrode body 3 has a sleeve shape carrying at its distal end the electrode 2 and at its proximal end 3 ', on its internal peripheral wall, a thread 15 in length d, within which recesses 8 are made, so as to present a hexagonal cross section H.
  • Figure 6 is a diagram of an electrode holder 4 according to the invention bearing on its 4 ′ end, a 15 'thread intended to come to cooperate by screwing with the tapping 15 of the electrode body 3 of FIG. 4 and, in in addition, a 4 "template with a complementary profile recesses 8 made within the internal thread 15 of the body electrode 3.
  • the dimension D3 of the template 4 "of the electrode holder 4 is less, by the value of a functional clearance, than diameter D2 of the housing 16 of the electrode body 3 for allow the relative movement of a part with respect to the other, but close enough or close enough to ensure the desired centering effect, and therefore allow correct positioning of the electrode body 3 on said electrode holder 4.
  • the male / female assembly 11 according to the invention can equip manual or automatic plasma torches.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Arc Welding In General (AREA)
  • Plasma Technology (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Claims (13)

  1. Elektrodenkörper (3) für einen Plasmabrenner, der im wesentlichen die Form einer Muffe aufweist und folgendes umfaßt:
    auf einem Oberteil seiner inneren Umfangsfläche zumindest ein Innengewinde (15), innerhalb dessen zumindest eine Aussparung (8) angebracht ist, die sich über die ganze Länge (d) des Innengewindes (15) erstreckt, wobei der mit dem Innengewinde (15) versehene Teil im Querschnitt einen Durchmesser D1 aufweist, und
    zumindest ein Unterteil, das einen Hohlraum (16) mit Durchmesser D2 begrenzt, der zwischen dem mit einem Innengewinde (15) versehenen Oberteil und dem Boden des Elektrodenkörpers (3) liegt, wobei D2 > D1.
  2. Elektrodenkörper nach Anspruch 1, dadurch gekennzeichnet, daß der Boden des Elektrodenkörpers (3) eine Elektrode (2) umfaßt.
  3. Elektrodenkörper nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß er mehrere Aussparungen (8) aufweist,
  4. Elektrodenkörper nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er mehrere Aussparungen (8) aufweist, die im Querschnitt ein Vieleck bilden.
  5. Elektrodenkörper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Aussparungen (8) ein Vieleck bilden, das entweder ein Dreieck, ein Quadrat, ein Fünfeck, ein Sechseck, ein Siebeneck oder ein Achteck ist.
  6. Elektrodenkörper nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß er aus Metall oder einer Metallegierung, vorzugsweise aus einer Kupferlegierung hergestellt wird.
  7. Elektrodenkörper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß er eine Elektrode (2) umfaßt, die aus einem Material hergestellt ist, das aus Hafnium, Zirkon oder Wolfram ausgewählt wird.
  8. Einheit mit männlichem/weiblichem Teil (11) für einen Plasmabrenner mit einem Elektrodenkörper (3), der im wesentlichen die Form einer Muffe hat, die das weiblichen Teil bildet, und mit einem Elektrodenträger (4) von in wesentlichen länglicher Form, der das männliche Teil bildet, bei der:
    der Elektrodenkörper (3) gemäß einem der Ansprüche 1 bis 7 gestaltet ist, und
    der Elektrodenträger (4) auf seiner äußeren Umfangsfläche zumindest ein Formstück (4'') umfaßt, das zumindest lokal im Querschnitt ein Profil aufweist, das dem Profil der zumindest einen Aussparung (8) des Elektrodenkörpers (3) entspricht, und zumindest ein Gewinde (15'), wobei das Formstück (4'') zwischen dem unteren Ende des Elektrodenträgers (4) und dem Gewinde (15') liegt.
  9. Plasmabrenner, der mit einem Elektrodenträger (4) versehen ist, der auf seiner äußeren Umfangsfläche zumindest ein Formstück (4'') und zumindest ein Gewinde (15') umfaßt, wobei das Formstück (4'') zwischen dem unteren Ende des Elektrodenträgers (4) und dem Gewinde (15') liegt, wobei das Formstück (4'') zumindest lokal im Querschnitt ein Profil aufweist, das dem Profil der zumindest einen Aussparung (8) eines Elektrodenkörpers (3) gemäß einem der Ansprüche 1 bis 7 entspricht.
  10. Plasmabrenner, dadurch gekennzeichnet, daß er mit einer Einheit mit männlichem/weiblichem Teil (11) nach Anspruch 8 ausgestattet ist.
  11. Automatische Maschine zum Schweißen, Schneiden oder Markieren mittels Plasmabogen, dadurch gekennzeichnet, daß sie mit einem Plasmabrenner nach einem der Ansprüche 9 bis 10 ausgestattet ist.
  12. Verfahren zum Schweißen, Schneiden oder Markieren mittels Plasmabogen, dadurch gekennzeichnet, daß ein Plasmabrenner nach einem der Ansprüche 9 bis 10 eingesetzt wird.
  13. Verwendung eines Elektrodenkörpers (3) nach einem der Ansprüche 1 bis 7 in einem Plasmabrenner.
EP98403072A 1997-12-12 1998-12-07 Elektrodenkörper/Elektrodenhalter Einheit für Plasmabrenner Expired - Lifetime EP0923276B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9715751A FR2772547B1 (fr) 1997-12-12 1997-12-12 Ensemble corps d'electrode/porte-electrode pour torche plasma
FR9715751 1997-12-12
US09/443,116 US6147318A (en) 1997-12-12 1999-11-18 Assembly of electrode body and electrode carrier for a plasma torch
CA002290144A CA2290144A1 (fr) 1997-12-12 1999-11-22 Ensemble corps d'electrode/porte-electrode pour torche plasma

Publications (2)

Publication Number Publication Date
EP0923276A1 EP0923276A1 (de) 1999-06-16
EP0923276B1 true EP0923276B1 (de) 2001-10-17

Family

ID=27171087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98403072A Expired - Lifetime EP0923276B1 (de) 1997-12-12 1998-12-07 Elektrodenkörper/Elektrodenhalter Einheit für Plasmabrenner

Country Status (7)

Country Link
US (2) US6147318A (de)
EP (1) EP0923276B1 (de)
CA (1) CA2290144A1 (de)
DE (1) DE69802062T2 (de)
ES (1) ES2165136T3 (de)
FR (1) FR2772547B1 (de)
PT (1) PT923276E (de)

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US7395527B2 (en) 2003-09-30 2008-07-01 International Business Machines Corporation Method and apparatus for counting instruction execution and data accesses
US8381037B2 (en) 2003-10-09 2013-02-19 International Business Machines Corporation Method and system for autonomic execution path selection in an application
US7895382B2 (en) 2004-01-14 2011-02-22 International Business Machines Corporation Method and apparatus for qualifying collection of performance monitoring events by types of interrupt when interrupt occurs
US7415705B2 (en) 2004-01-14 2008-08-19 International Business Machines Corporation Autonomic method and apparatus for hardware assist for patching code
DE102009016932B4 (de) 2009-04-08 2013-06-20 Kjellberg Finsterwalde Plasma Und Maschinen Gmbh Kühlrohre und Elektrodenaufnahme für einen Lichtbogenplasmabrenner sowie Anordnungen aus denselben und Lichtbogenplasmabrenner mit denselben
US8338753B2 (en) * 2010-04-30 2012-12-25 Lincoln Global, Inc. Contact tip and diffuser
US10456855B2 (en) 2013-11-13 2019-10-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US9981335B2 (en) 2013-11-13 2018-05-29 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11278983B2 (en) 2013-11-13 2022-03-22 Hypertherm, Inc. Consumable cartridge for a plasma arc cutting system
US11684995B2 (en) 2013-11-13 2023-06-27 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
US11432393B2 (en) 2013-11-13 2022-08-30 Hypertherm, Inc. Cost effective cartridge for a plasma arc torch
CN111604576B (zh) 2014-08-12 2023-07-18 海别得公司 用于等离子弧焊炬的成本有效的筒
JP2018523896A (ja) 2015-08-04 2018-08-23 ハイパーサーム インコーポレイテッド 液冷プラズマアークトーチ用カートリッジ
US10413991B2 (en) 2015-12-29 2019-09-17 Hypertherm, Inc. Supplying pressurized gas to plasma arc torch consumables and related systems and methods
CZ202054A3 (cs) * 2020-02-05 2021-03-03 B&Bartoni, spol. s r.o. Sestava elektrody pro plazmový obloukový hořák se zlepšeným přenosem elektrického proudu

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JPS551017A (en) * 1978-06-16 1980-01-07 Hiroshi Tanida Torch for generating transfer type plasma jet
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US5796067A (en) * 1995-10-30 1998-08-18 The Lincoln Electric Company Plasma arc torches and methods of operating and testing the same
US5841095A (en) * 1996-10-28 1998-11-24 Hypertherm, Inc. Apparatus and method for improved assembly concentricity in a plasma arc torch

Also Published As

Publication number Publication date
FR2772547B1 (fr) 2000-01-21
CA2290144A1 (fr) 2001-05-22
US6252194B1 (en) 2001-06-26
DE69802062T2 (de) 2002-06-20
US6147318A (en) 2000-11-14
FR2772547A1 (fr) 1999-06-18
DE69802062D1 (de) 2001-11-22
ES2165136T3 (es) 2002-03-01
EP0923276A1 (de) 1999-06-16
PT923276E (pt) 2002-02-28

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