EP2210455A2 - Electrode for a plasma burner - Google Patents

Electrode for a plasma burner

Info

Publication number
EP2210455A2
EP2210455A2 EP09804234A EP09804234A EP2210455A2 EP 2210455 A2 EP2210455 A2 EP 2210455A2 EP 09804234 A EP09804234 A EP 09804234A EP 09804234 A EP09804234 A EP 09804234A EP 2210455 A2 EP2210455 A2 EP 2210455A2
Authority
EP
European Patent Office
Prior art keywords
electrode
electrode holder
holder
emission
insert
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
EP09804234A
Other languages
German (de)
French (fr)
Other versions
EP2210455B1 (en
Inventor
Katrin Jehnert
Martin Kroschwald
Frank Laurisch
Ralf-Peter Reinke
Thomas Steudtner
Volker Krink
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.)
Kjellberg Finsterwalde Plasma und Maschinen GmbH
Original Assignee
Kjellberg Finsterwalde Plasma und Maschinen 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 Kjellberg Finsterwalde Plasma und Maschinen GmbH filed Critical Kjellberg Finsterwalde Plasma und Maschinen GmbH
Priority to PL09804234T priority Critical patent/PL2210455T3/en
Priority to SI200930863T priority patent/SI2210455T1/en
Publication of EP2210455A2 publication Critical patent/EP2210455A2/en
Application granted granted Critical
Publication of EP2210455B1 publication Critical patent/EP2210455B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3478—Geometrical details

Definitions

  • the present invention relates to an electrode for a plasma torch and a plasma torch head with the same.
  • Plasma is a thermally highly heated electrically conductive gas, which consists of positive and negative ions, electrons and excited and neutral atoms and molecules.
  • the plasma gas used is a variety of gases, for example the monatomic argon and / or the diatomic gases hydrogen, nitrogen, oxygen or air. These gases ionize and dissociate through the energy of an arc. The narrowed by a nozzle arc is then referred to as plasma jet.
  • the plasma jet can be greatly influenced in its parameters by the design of the nozzle and electrode. These parameters of the plasma jet are, for example, the beam diameter, the temperature, the energy density and the flow velocity of the gas.
  • the plasma is constricted through a nozzle, which may be gas or water cooled.
  • a nozzle which may be gas or water cooled.
  • energy densities up to 2x10 W / cm 2 can be achieved.
  • temperatures up to 30,000 0 C in conjunction realize very high cutting speeds of materials with the high flow velocity of the gas.
  • the nozzle is then inserted into a plasma torch whose main components are a plasma torch head, a nozzle cap, a plasma gas guide member, a nozzle, a nozzle holder, an electrode holder, an electrode holder with electrode insert and in modern plasma torches a nozzle cap holder and a nozzle cap.
  • the electrode holder fixes a pointed electrode insert, called emission insert, made of tungsten, which is suitable for the use of non-oxidizing gases as plasma gas, for example an argon-hydrogen mixture.
  • a so-called flat electrode whose electrode insert consists for example of hafnium is also suitable for the use of oxidizing gases as plasma gas, for example air or oxygen.
  • the nozzle and the electrode is often cooled with a liquid, for example water, but it can also be cooled with a gas.
  • the electrode consists of its electrode holder, which consists of a good electrically and heat conductive material, e.g. Copper and silver or their alloys and an emissive insert made of a temperature-resistant material, eg. As tungsten, zirconium or hafnium.
  • a good electrically and heat conductive material e.g. Copper and silver or their alloys
  • an emissive insert made of a temperature-resistant material, eg. As tungsten, zirconium or hafnium.
  • hafnium is better suited because its oxide is more temperature-stable.
  • the high-temperature material is introduced as an emission insert in the socket, which is then cooled.
  • the most effective way of cooling is liquid cooling.
  • DD 87361 describes such an electrode (cathode) for oxidizing gases.
  • the cathode (emission insert) consists of a material, eg zirconium, whose oxide is temperature-resistant and which is inserted into a cathode made of copper.
  • the cathode socket is cooled from the inside by a cooling water channel. Furthermore, the problem of a short life (life) of the cathode is described, which is generated by the rotation of the plasma gas, which is necessary for a good quality of cut.
  • the cathode socket has a collar around which a gas guide ring is arranged, which has incorporated for the division of the plasma gas in a partial flow and a main flow of gas ducts which form the main flow on the side facing the nozzle and set it in rotation and those facing on the cathode socket Form side of the oppositely rotating partial flow or that the collar of the cathode socket has recesses, which serve the formation and deflection of a partial gas flow.
  • This is intended to create a soothed gas zone prior to emissive use to reduce its wear.
  • this method does not achieve as high cutting qualities as with strongly rotating plasma gas.
  • DE 690 14 289 T3 and DE 699 37 323 T2 describe electrode arrangements in which a sleeve (separator) is mounted around the emission insert and separates the emission insert from the electrode holder.
  • the separator consists mainly of silver and the electrode holder mainly of copper. The silver ensures a longer life, especially when cutting with pure oxygen, since silver reacts with oxygen in reacting way than copper.
  • the production of these electrode arrangements is expensive.
  • the emissive surface of the emissive insert is initially shaped to define a recess in the emissive insert that has an initial depth in the central axis that is proportional to the cutting current and diameter of the emissive insert. This recess reduces the deposition of emission material on the nozzle inner surface caused by the ignition and operation of the plasma arc. Investigations have shown, however, that the life is not prolonged. - A -
  • the invention has for its object to increase the life of an electrode, in particular the emission of use, for a plasma torch while reducing the manufacturing cost.
  • an electrode for a plasma torch comprising: an elongated electrode holder having a front surface on the electrode tip and a bore disposed in the electrode tip along a central axis through the electrode holder, and an emissive insert disposed in the bore is arranged such that an emission surface of the emission insert is exposed, characterized in that the emission surface is opposite to the front surface of the electrode holder.
  • an electrode for a plasma torch comprising: an electrode holder and an electrode holder, the electrode holder having an internal thread and the electrode holder has an external thread and a groove in the cylindrical outer surface, and the electrode holder with the Elektrodenaufhahme over the external thread and the internal thread are screwed and sealed by means of the round ring.
  • a circular ring may be arranged for sealing.
  • the invention is based on the surprising finding that the life of the electrode is increased by repositioning the emission surface with respect to the front surface of the electrode holder.
  • Figure 1 is a longitudinal sectional view through a plasma burner head according to a first particular embodiment of the invention, in which both a better centering and / or sealing of the electrode and a special emission insert to extend the life and increase the reliability of the plasma torch are provided;
  • Fig. 2 shows details of the improved centering and sealing of the electrode shown in Fig. 1;
  • Fig. 3 shows an electrode holder prior to introduction of an emissive insert
  • Fig. 11 shows different surface shapes of particular embodiments of the emission insert from the front.
  • Fig. 1 shows a plasma burner head 1 according to a particular embodiment of the invention, the essential components at least one nozzle 4, an electrode 7, more specifically a flat electrode having an electrode holder 7.5 with an external thread 7.4 and an emissive insert 7.1, and a gas guide 3 ,
  • the nozzle 4 is fixed by a nozzle holder 5 and a nozzle cap 2.
  • An electrode holder 6 receives the electrode holder 7.5 via an internal thread 6.4.
  • the gas guide 3 is located between the electrode 7 and the nozzle 4 and sets a plasma gas PG in rotation.
  • the plasma burner head 1 has a water cooling, which flows through the electrode interior with the aid of a cooling tube 10 from the coolant flow (WVl) to the coolant return (WRl) and the nozzle 4 in the space between the nozzle 4 and the nozzle cap 2 from the coolant flow WV2 to the coolant return WR2.
  • the plasma burner head 1 has a nozzle protection cap 9, which in this embodiment, a Nozzle protection cap holder 8 is screwed. Between the nozzle cap 9 and the nozzle cap 2, the secondary gas flows, which protects the nozzle, in particular the nozzle tip.
  • Fig. 2 shows the improved centering and sealing of the electrode 7 to the electrode holder 7.5.
  • the electrode 7 has on the side facing the Elektrodenaufhahme 6 the external thread 7.4, a groove 7.3 for receiving a circular ring 7.2 and a cylindrical outer surface 7.6 (centering).
  • This cylindrical outer surface 7.6 is closely tolerated with the cylindrical inner surface 6.6 (centering surface) of the Elektrodenaufhahme 6. This is e.g. achieved by a, for centering usual clearance H7 / h6 according to DIN ISO 286.
  • FIG. 3 shows an electrode 7 before introducing the emissive insert 7.1 into the electrode holder 7.5.
  • FIGS. 4 to 10 show specific embodiments of the electrode 7 according to the invention, which has an electrode holder 7.5 and an emissive insert 7.1.
  • the angle ⁇ in the surface of the emission insert 7.1 is advantageously in the range of 0 ° ... 120 °.
  • the diameter c1 of the bore for the emission insert 7.1 in the electrode holder 7.5 is advantageously in the range from 0.5 mm to 2.9 mm. Furthermore, advantageously applies to the emission use 7.1:
  • Diameter c2 0.5 mm to 2.9 mm
  • Diameter d of the surface 7.11: d 0.3 mm to 2.7 mm and d ⁇ c2 - 0.2 mm
  • Fig. 11 shows different surface shapes of the emission insert 7.1.
  • the surface area A2 of the electrode holder 7.5 adjacent surface of the emissive insert 7.1 is at least as large as the resulting in a circular formation depending on the diameter c2 minimum possible surface area A2 of the annulus.
  • another e.g. oblique transition surface 7.13 be provided with an area A3.
  • the outer contours of the surfaces 7.11 and 7.13 for example, triangular, polygonal or star-shaped o.a. be.
  • A2 Surface area of the surface 7.12 a Distance between the surface 7.7 of the electrode holder 7.5 and the central surface 7.11 of the emissive insert 7.1b Distance between the surface 7.7 of the electrode holder 7.5 and the peripheral surface 7.12 of the emissive insert 7.1 cl Diameter of the hole for the emission insert 7.1 im

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Geometry (AREA)
  • Plasma Technology (AREA)
  • Arc Welding In General (AREA)
  • Discharge Heating (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Furnace Details (AREA)

Abstract

The invention relates to an electrode for a plasma burner, comprising a long electrode holder with a front surface on the tip of the electrode, and a borehole in the tip of the electrode along a central axis through the electrode holder, and an emission inset arranged in the borehole in such a way that an emission surface is separate from the emission inset. The invention is characterised in that the emission surface is set back from the front surface of the electrode holder. The invention also relates to an electrode for a plasma burner, comprising an electrode receiving element and an electrode holder, the electrode receiving element comprising an inner thread and the electrode holder comprising an outer thread and an annular ring in a groove in the cylindrical outer surface. The electrode holder is screwed to the electrode receiving element by the outer thread and the inner thread and is sealed by the annular ring. The invention also relates to a plasma burner comprising such electrodes.

Description

Elektrode für einen Plasmabrenner Electrode for a plasma torch
Die vorliegende Erfindung betrifft eine Elektrode für einen Plasmabrenner und einen Plasmabrennerkopf mit derselben.The present invention relates to an electrode for a plasma torch and a plasma torch head with the same.
Als Plasma wird ein thermisch hoch aufgeheiztes elektrisch leitfähiges Gas bezeichnet, das aus positiven und negativen Ionen, Elektronen sowie angeregten und neutralen Atomen und Molekülen besteht.Plasma is a thermally highly heated electrically conductive gas, which consists of positive and negative ions, electrons and excited and neutral atoms and molecules.
Als Plasmagas werden unterschiedliche Gase, zum Beispiel das einatomige Argon und/oder die zweiatomigen Gase Wasserstoff, Stickstoff, Sauerstoff oder Luft eingesetzt. Diese Gase ionisieren und dissoziieren durch die Energie eines Lichtbogens. Der durch eine Düse eingeschnürte Lichtbogen wird dann als Plasmastrahl bezeichnet.The plasma gas used is a variety of gases, for example the monatomic argon and / or the diatomic gases hydrogen, nitrogen, oxygen or air. These gases ionize and dissociate through the energy of an arc. The narrowed by a nozzle arc is then referred to as plasma jet.
Der Plasmastrahl kann in seinen Parametern durch die Gestaltung der Düse und Elektrode stark beeinflußt werden. Diese Parameter des Plasmastrahls sind zum Beispiel der Strahldurchmesser, die Temperatur, Energiedichte und die Strömungsgeschwindigkeit des Gases.The plasma jet can be greatly influenced in its parameters by the design of the nozzle and electrode. These parameters of the plasma jet are, for example, the beam diameter, the temperature, the energy density and the flow velocity of the gas.
Beim Plasmaschneiden beispielsweise wird das Plasma durch eine Düse, die gas- oder wassergekühlt sein kann, eingeschnürt. Dadurch können Energiedichten bis 2x10 W/cm2 erreicht werden. Im Plasmastrahl entstehen Temperaturen bis 30.000 0C,, die in Verbindung mit der hohen Strömungsgeschwindigkeit des Gases sehr hohe Schneidgeschwindigkeiten an Werkstoffen realisieren.In plasma cutting, for example, the plasma is constricted through a nozzle, which may be gas or water cooled. As a result, energy densities up to 2x10 W / cm 2 can be achieved. In the plasma jet arise temperatures up to 30,000 0 C ,, in conjunction realize very high cutting speeds of materials with the high flow velocity of the gas.
Wegen der hohen thermischen Belastung der Düse wird diese in der Regel aus einem metallischen Werkstoff, vorzugsweise wegen seiner hohen elektrischen Leitfähigkeit und Wärmeleitfähigkeit aus Kupfer, hergestellt. Gleiches gilt für den Elektrodenhalter, der aber auch aus Silber hergestellt sein kann. Die Düse wird dann in einen Plasmabrenner, dessen Hauptbestandteile ein Plasmabrennerkopf, eine Düsenkappe, ein Plasmagasführungsteil, eine Düse, eine Düsenhalterung, eine Elektrodenaufnahme, ein Elektrodenhalter mit Elektrodeneinsatz und bei modernen Plasmabrennern eine Düsenschutzkappenhalterung und eine Düsenschutzkappe sind, eingesetzt. Der Elektrodenhalter fixiert einen spitzen Elektrodeneinsatz, Emissionseinsatz genannt, aus Wolfram, der für den Einsatz nicht oxidierender Gase als Plasmagas, zum Beispiel ein Argon- Wasserstoff-Gemisch geeignet ist. Eine sogenannte Flachelektrode, deren Elektrodeneinsatz beispielsweise aus Hafnium besteht, ist auch für den Einsatz oxidierender Gase als Plasmagas, zum Beispiel Luft oder Sauerstoff, geeignet.Because of the high thermal load of the nozzle, this is usually made of a metallic material, preferably because of its high electrical conductivity and thermal conductivity of copper. The same applies to the electrode holder, which can also be made of silver. The nozzle is then inserted into a plasma torch whose main components are a plasma torch head, a nozzle cap, a plasma gas guide member, a nozzle, a nozzle holder, an electrode holder, an electrode holder with electrode insert and in modern plasma torches a nozzle cap holder and a nozzle cap. The electrode holder fixes a pointed electrode insert, called emission insert, made of tungsten, which is suitable for the use of non-oxidizing gases as plasma gas, for example an argon-hydrogen mixture. A so-called flat electrode whose electrode insert consists for example of hafnium is also suitable for the use of oxidizing gases as plasma gas, for example air or oxygen.
Um eine hohe Lebensdauer für die Düse und die Elektrode zu erreichen, wird oft mit einer Flüssigkeit, zum Beispiel Wasser, gekühlt, es kann aber auch mit einem Gas gekühlt werden.To achieve a long service life for the nozzle and the electrode is often cooled with a liquid, for example water, but it can also be cooled with a gas.
Insofern wird in flüssigkeitsgekühlte und gasgekühlte Plasmabrenner unterschieden.In this respect, a distinction is made in liquid-cooled and gas-cooled plasma torches.
Nach dem Stand der Technik besteht die Elektrode aus seinem Elektrodenhalter, der aus einem gut elektrisch und Wärme leitendem Material, z.B. Kupfer und Silber oder deren Legierungen und einem Emissionseinsatz, die aus einem temperaturfesten Werkstoff, z. B. Wolfram, Zirkonium oder Hafnium besteht. Für sauerstoffhaltige Plasmagase kann Zirkonium eingesetzt werden, wegen seiner besseren thermischen Eigenschaften ist allerdings Hafnium besser geeignet, da dessen Oxid temperaturbeständiger ist.According to the prior art, the electrode consists of its electrode holder, which consists of a good electrically and heat conductive material, e.g. Copper and silver or their alloys and an emissive insert made of a temperature-resistant material, eg. As tungsten, zirconium or hafnium. For oxygen-containing plasma gases zirconium can be used, but because of its better thermal properties, hafnium is better suited because its oxide is more temperature-stable.
Um eine hohe Lebensdauer der Elektrode zu erreichen, wird der Hochtemperaturwerkstoff als Emissionseinsatz in die Fassung eingebracht, die dann gekühlt wird. Die effektivste Art der Kühlung ist die Flüssigkeitskühlung. In DD 87361 ist eine solche Elektrode (Katode) für oxidierende Gase beschrieben. Die Katode (Emissionseinsatz) besteht aus einem Material, z.B. Zirkonium, dessen Oxid temperaturbeständig ist und die in eine aus Kupfer bestehende Katodenfassung eingesetzt wird. Die Katodenfassung wird von innen durch einen Kühlwasserkanal gekühlt. Weiterhin wird das Problem einer geringen Standzeit (Lebensdauer) der Katode beschrieben, die durch die Rotation des Plasmagases, die für eine gute Schnittqualität notwendig ist, erzeugt wird. Die Katodenfassung besitzt einen Bund, um den ein Gasführungsring angeordnet ist, der zur Aufteilung des Plasmagases in einen Teilstrom und einen Hauptstrom eingearbeitete Gaskanäle aufweist, die auf der der Düse zugewandten Seite den Hauptstrom bilden und ihn in Rotation versetzen und die auf der der Katodenfassung zugewandten Seite den entgegengesetzt rotierenden Teilstrom bilden oder dass der Bund der Katodenfassung Aussparungen aufweist, die der Bildung und Umlenkung eines Teilgasstromes dienen. Damit soll eine beruhigte Gaszone vor dem Emissionseinsatz erzeugt werden, um seinen Verschleiß zu reduzieren. Mit diesem Verfahren werden jedoch nicht so hohe Schnittqualitäten erreicht wie bei stark rotierendem Plasmagas.In order to achieve a long service life of the electrode, the high-temperature material is introduced as an emission insert in the socket, which is then cooled. The most effective way of cooling is liquid cooling. DD 87361 describes such an electrode (cathode) for oxidizing gases. The cathode (emission insert) consists of a material, eg zirconium, whose oxide is temperature-resistant and which is inserted into a cathode made of copper. The cathode socket is cooled from the inside by a cooling water channel. Furthermore, the problem of a short life (life) of the cathode is described, which is generated by the rotation of the plasma gas, which is necessary for a good quality of cut. The cathode socket has a collar around which a gas guide ring is arranged, which has incorporated for the division of the plasma gas in a partial flow and a main flow of gas ducts which form the main flow on the side facing the nozzle and set it in rotation and those facing on the cathode socket Form side of the oppositely rotating partial flow or that the collar of the cathode socket has recesses, which serve the formation and deflection of a partial gas flow. This is intended to create a soothed gas zone prior to emissive use to reduce its wear. However, this method does not achieve as high cutting qualities as with strongly rotating plasma gas.
Weiterhin werden in DE 690 14 289 T3 und in DE 699 37 323 T2 Elektrodenanordnungen beschrieben, bei den um den Emissionseinsatz eine Hülse (Separator) angebracht ist, die den Emissionseinsatz vom Elektrodenhalter trennt. Dabei besteht der Separator vorwiegend aus Silber und der Elektrodenhalter vorwiegend aus Kupfer. Das Silber sichert eine längere Lebensdauer insbesondere beim Schneiden mit reinem Sauerstoff, da Silber reaktionsträger mit Sauerstoff reagiert als Kupfer. Die Fertigung dieser Elektrodenanordnungen ist jedoch aufwendig.Furthermore, DE 690 14 289 T3 and DE 699 37 323 T2 describe electrode arrangements in which a sleeve (separator) is mounted around the emission insert and separates the emission insert from the electrode holder. The separator consists mainly of silver and the electrode holder mainly of copper. The silver ensures a longer life, especially when cutting with pure oxygen, since silver reacts with oxygen in reacting way than copper. However, the production of these electrode arrangements is expensive.
Aus DE 695 12 247 T2 ist bekannt, dass die Emissionsfläche des Emissionseinsatzes anfänglich so geformt ist, dass sie eine Aussparung im Emissionseinsatz bestimmt, die eine Anfangstiefe in der Mittelachse hat, die proportional zum Schneidstrom und zum Durchmesser des Emissionseinsatzes ist. Durch diese Aussparung wird die durch das Zünden und den Betrieb des Plasmabogens verursachte Ablagerung von Emissionsmaterial auf der Düseninnenfläche reduziert. Untersuchungen haben jedoch ergeben, dass die Lebensdauer dadurch nicht verlängert wird. - A -From DE 695 12 247 T2, it is known that the emissive surface of the emissive insert is initially shaped to define a recess in the emissive insert that has an initial depth in the central axis that is proportional to the cutting current and diameter of the emissive insert. This recess reduces the deposition of emission material on the nozzle inner surface caused by the ignition and operation of the plasma arc. Investigations have shown, however, that the life is not prolonged. - A -
Der Erfindung liegt die Aufgabe zugrunde, die Lebensdauer einer Elektrode, insbesondere des Emissionseinsatzes, für einen Plasmabrenner zu erhöhen und dabei gleichzeitig den Fertigungsaufwand zu reduzieren.The invention has for its object to increase the life of an electrode, in particular the emission of use, for a plasma torch while reducing the manufacturing cost.
Erfindungsgemäß wird diese Aufgabe gelöst durch eine Elektrode für einen Plasmabrenner, umfassend: einen länglichen Elektrodenhalter mit einer vorderen Fläche an der Elektrodenspitze und einer Bohrung, die in der Elektrodenspitze entlang einer Mittelachse durch den Elektrodenhalter angeordnet ist, und einen Emissionseinsatz, der in der Bohrung derart angeordnet ist, dass eine Emissionsfläche von dem Emissionseinsatz freiliegt, dadurch gekennzeichnet, dass die Emissionsfläche gegenüber der vorderen Fläche des Elektrodenhalters zurücksteht.According to the invention, this object is achieved by an electrode for a plasma torch comprising: an elongated electrode holder having a front surface on the electrode tip and a bore disposed in the electrode tip along a central axis through the electrode holder, and an emissive insert disposed in the bore is arranged such that an emission surface of the emission insert is exposed, characterized in that the emission surface is opposite to the front surface of the electrode holder.
Gemäß einem zweiten Aspekt wird diese Aufgabe gelöst durch eine Elektrode für einen Plasmabrenner, umfassend: eine Elektrodenaufhahme und einen Elektrodenhalter, wobei die Elektrodenaufhahme ein Innengewinde aufweist und der Elektrodenhalter ein Außengewinde und eine Nut in der zylindrischen Außenfläche aufweist, sowie der Elektrodenhalter mit der Elektrodenaufhahme über das Außengewinde und das Innengewinde verschraubt und mittels des Rundrings abgedichtet ist. In der Nut kann ein Rundring zum Abdichten angeordnet sein.According to a second aspect, this object is achieved by an electrode for a plasma torch, comprising: an electrode holder and an electrode holder, the electrode holder having an internal thread and the electrode holder has an external thread and a groove in the cylindrical outer surface, and the electrode holder with the Elektrodenaufhahme over the external thread and the internal thread are screwed and sealed by means of the round ring. In the groove, a circular ring may be arranged for sealing.
Die jeweiligen Unteransprüche betreffen vorteilhafte Weiterentwicklungen der Erfindung.The respective subclaims relate to advantageous developments of the invention.
Der Erfindung liegt die überraschende Erkenntnis zugrunde, dass durch Zurückstellen der Emissionsfläche gegenüber der vorderen Fläche des Elektrodenhalters die Lebensdauer der Elektrode erhöht wird.The invention is based on the surprising finding that the life of the electrode is increased by repositioning the emission surface with respect to the front surface of the electrode holder.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den beigefügten Ansprüchen und der nachfolgenden Beschreibung, in der mehrere Ausfuhrungsbeispiele der Erfindung anhand der schematischen Zeichnungen im einzelnen erläutert sind, in denen: Fig. 1 eine Längsschnittansicht durch einen Plasmabrennerkopf gemäß einer ersten besonderen Ausführungsform der Erfindung zeigt, bei dem sowohl eine bessere Zentrierung und/oder Abdichtung der Elektrode als auch ein spezieller Emissionseinsatz zur Verlängerung der Lebensdauer und Erhöhung der Betriebssicherheit des Plasmabrenners vorgesehen sind;Further features and advantages of the invention will become apparent from the appended claims and the following description, in which several exemplary embodiments of the invention are explained in detail with reference to the schematic drawings, in which: Figure 1 is a longitudinal sectional view through a plasma burner head according to a first particular embodiment of the invention, in which both a better centering and / or sealing of the electrode and a special emission insert to extend the life and increase the reliability of the plasma torch are provided;
Fig. 2 Details der verbesserten Zentrierung und Abdichtung der in Fig. 1 gezeigten Elektrode zeigt;Fig. 2 shows details of the improved centering and sealing of the electrode shown in Fig. 1;
Fig. 3 einen Elektrodenhalter vor dem Einbringen eines Emissionseinsatzes zeigt;Fig. 3 shows an electrode holder prior to introduction of an emissive insert;
Fig. 4 bis 10 spezielle Ausführungsformen der erfmdungsgemäßen Elektrode in Längsschnittansicht und Details der Emissionseinsätze in Längsschnittansicht und in Ansicht von vorne zeigen; und4 to 10 show special embodiments of the electrode according to the invention in longitudinal section view and details of the emission inserts in longitudinal section view and in front view; and
Fig. 11 unterschiedliche Flächenformen von besonderen Ausführungsformen des Emissionseinsatzes von vorne zeigt.Fig. 11 shows different surface shapes of particular embodiments of the emission insert from the front.
Fig. 1 zeigt einen Plasmabrennerkopf 1 gemäß einer besonderen Ausfuhrungsform der Erfindung, dessen wesentlichen Bestandteile zumindest eine Düse 4, eine Elektrode 7, genauer gesagt eine Flachelektrode, die einen Elektrodenhalter 7.5 mit einem Außengewinde 7.4 und einen Emissionseinsatz 7.1 aufweist, und eine Gasführung 3 sind.Fig. 1 shows a plasma burner head 1 according to a particular embodiment of the invention, the essential components at least one nozzle 4, an electrode 7, more specifically a flat electrode having an electrode holder 7.5 with an external thread 7.4 and an emissive insert 7.1, and a gas guide 3 ,
Im hier beschriebenen Fall wird die Düse 4 durch einen Düsenhalter 5 und eine Düsenkappe 2 fixiert. Eine Elektrodenaufnahme 6 nimmt den Elektrodenhalter 7.5 über ein Innengewinde 6.4 auf. Die Gasführung 3 befindet sich zwischen der Elektrode 7 und der Düse 4 und versetzt ein Plasmagas PG in Rotation. Der Plasmabrennerkopf 1 verfügt über eine Wasserkühlung, die den Elektrodeninnenraum mit Hilfe eines Kühlrohrs 10 vom Kühlmittelvorlauf (WVl) zum Kühlmittelrücklauf (WRl) sowie die Düse 4 im Raum zwischen der Düse 4 und der Düsenkappe 2 vom Kühlmittelvorlauf WV2 zum Kühlmittelrücklauf WR2 durchströmt. Zusätzlich verfugt der Plasmabrennerkopf 1 über eine Düsenschutzkappe 9, die in diesem Ausführungsbeispiel auf eine Düsenschutzkappenhalterung 8 aufgeschraubt ist. Zwischen der Düsenschutzkappe 9 und der Düsenkappe 2 strömt das Sekundärgas, das die Düse, insbesondere die Düsenspitze schützt.In the case described here, the nozzle 4 is fixed by a nozzle holder 5 and a nozzle cap 2. An electrode holder 6 receives the electrode holder 7.5 via an internal thread 6.4. The gas guide 3 is located between the electrode 7 and the nozzle 4 and sets a plasma gas PG in rotation. The plasma burner head 1 has a water cooling, which flows through the electrode interior with the aid of a cooling tube 10 from the coolant flow (WVl) to the coolant return (WRl) and the nozzle 4 in the space between the nozzle 4 and the nozzle cap 2 from the coolant flow WV2 to the coolant return WR2. In addition, the plasma burner head 1 has a nozzle protection cap 9, which in this embodiment, a Nozzle protection cap holder 8 is screwed. Between the nozzle cap 9 and the nozzle cap 2, the secondary gas flows, which protects the nozzle, in particular the nozzle tip.
Fig. 2 zeigt die verbesserte Zentrierung und Abdichtung der Elektrode 7 zum Elektrodenhalter 7.5. Die Elektrode 7 hat an der zur Elektrodenaufhahme 6 gewandten Seite das Außengewinde 7.4, eine Nut 7.3 für die Aufnahme eines Rundrings 7.2 und eine zylindrische Außenfläche 7.6 (Zentrierfläche). Diese zylindrische Außenfläche 7.6 ist eng mit der zylindrischen Innenfläche 6.6 (Zentrierfläche) der Elektrodenaufhahme 6 toleriert. Dies wird z.B. durch eine für, Zentrierungen übliche Spielpassung H7/h6 nach DIN ISO 286 erreicht. Durch die Kombination dieser Merkmale wird eine gute Zentrizität zwischen Elektrode 7 und Elektrodenaufhahme 6 und damit dem Plasmabrenner und eine sichere Abdichtung erreicht.Fig. 2 shows the improved centering and sealing of the electrode 7 to the electrode holder 7.5. The electrode 7 has on the side facing the Elektrodenaufhahme 6 the external thread 7.4, a groove 7.3 for receiving a circular ring 7.2 and a cylindrical outer surface 7.6 (centering). This cylindrical outer surface 7.6 is closely tolerated with the cylindrical inner surface 6.6 (centering surface) of the Elektrodenaufhahme 6. This is e.g. achieved by a, for centering usual clearance H7 / h6 according to DIN ISO 286. By combining these features, a good centricity between the electrode 7 and electrode holder 6 and thus the plasma torch and a secure seal is achieved.
Fig. 3 zeigt eine Elektrode 7 vor dem Einbringen des Emissionseinsatzes 7.1 in den Elektrodenhalter 7.5.FIG. 3 shows an electrode 7 before introducing the emissive insert 7.1 into the electrode holder 7.5.
Die Fig. 4 bis 10 zeigen spezielle Ausführungsformen der erfindungsgemäßen Elektrode 7, die einen Elektrodenhalter 7.5 und einen Emissionseinsatz 7.1 aufweist.FIGS. 4 to 10 show specific embodiments of the electrode 7 according to the invention, which has an electrode holder 7.5 and an emissive insert 7.1.
Für den Abstand a zwischen der Oberfläche 7.7 des Elektrodenhalters 7.5 und der Oberfläche 7.11 des Emissionseinsatzes 7.1 und den Abstand b zwischen der Oberfläche 7.7 des Elektrodenhalters 7.5 und der Oberfläche 7.12 des Emissionseinsatzes 7.1 gelten folgende Beziehungen:For the distance a between the surface 7.7 of the electrode holder 7.5 and the surface 7.11 of the emissive insert 7.1 and the distance b between the surface 7.7 of the electrode holder 7.5 and the surface 7.12 of the emissive insert 7.1, the following relationships apply:
a > b a = 0,15 mm bis 0,5 mm b = 0, 1 mm bis 0,45 mm a > 1,3 x b bis 3 x ba> b a = 0.15 mm to 0.5 mm b = 0, 1 mm to 0.45 mm a> 1.3 x b to 3 x b
Der Winkel γ in der Oberfläche der Emissionseinsatzes 7.1 liegt vorteilhafterweise im Bereich von 0° ... 120°. Der Durchmesser cl der Bohrung für den Emissionseinsatz 7.1 im Elektrodenhalter 7.5 liegt vorteilhafterweise im Bereich von 0,5 mm bis 2,9 mm. Weiterhin gilt vorteilhafterweise für den Emissionseinsatz 7.1:The angle γ in the surface of the emission insert 7.1 is advantageously in the range of 0 ° ... 120 °. The diameter c1 of the bore for the emission insert 7.1 in the electrode holder 7.5 is advantageously in the range from 0.5 mm to 2.9 mm. Furthermore, advantageously applies to the emission use 7.1:
Durchmesser c2: c2 = 0,5 mm bis 2,9 mmDiameter c2: c2 = 0.5 mm to 2.9 mm
Durchmesser d der Oberfläche 7.11: d = 0,3 mm bis 2,7 mm und d < c2 - 0,2 mmDiameter d of the surface 7.11: d = 0.3 mm to 2.7 mm and d <c2 - 0.2 mm
Im übrigen gilt für die Breite g der Kreisringfläche A2: g > 0,1 mm = (c2 - d)/2Incidentally, for the width g of the annular surface A2: g> 0.1 mm = (c2 - d) / 2
Vorteilhafterweise liegt der Winkel ß des Emissionseinsatzes 7.1 im Bereich von 10° bis 90°, der Winkel oc der Bohrung im Elektrodenhalter 7.5 im Bereich von 80° bis 160°, wobei gilt αAdvantageously, the angle β of the emissive insert 7.1 in the range of 10 ° to 90 °, the angle oc of the hole in the electrode holder 7.5 in the range of 80 ° to 160 °, where α
Fig. 11 zeigt unterschiedliche Flächenformen des Emissionseinsatzes 7.1. Der Flächeninhalt A2 der zum Elektrodenhalter 7.5 angrenzenden Fläche des Emissionseinsatzes 7.1 ist mindestens so groß wie der sich bei kreisförmiger Ausbildung in Abhängigkeit vom Durchmesser c2 ergebende minimal mögliche Flächeninhalt A2 des Kreisringes. Zwischen der peripheren Oberfläche 7.12 und der mittigen Oberfläche 7.11 kann noch eine z.B. schräge Übergangsfläche 7.13 mit einem Flächeninhalt A3 vorgesehen sein. Die Außenkonturen der Oberflächen 7.11 und 7.13 können beispielsweise dreieckig, vieleckig oder sternförmig o.a. sein.Fig. 11 shows different surface shapes of the emission insert 7.1. The surface area A2 of the electrode holder 7.5 adjacent surface of the emissive insert 7.1 is at least as large as the resulting in a circular formation depending on the diameter c2 minimum possible surface area A2 of the annulus. Between the peripheral surface 7.12 and the central surface 7.11, another e.g. oblique transition surface 7.13 be provided with an area A3. The outer contours of the surfaces 7.11 and 7.13, for example, triangular, polygonal or star-shaped o.a. be.
Die in der vorstehenden Beschreibung, in den Zeichnungen sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebigen Kombinationen für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein. BezugszeichenlisteThe features of the invention disclosed in the foregoing description, in the drawings and in the claims may be essential both individually and in any combination for the realization of the invention in its various embodiments. LIST OF REFERENCE NUMBERS
1 Plasmabrennerkopf1 plasma burner head
2 Düsenkappe2 nozzle cap
3 Gasführung3 gas routing
4 Düse4 nozzle
5 Düsenhalter5 nozzle holders
6 Elektrodenaufhahme 6.4 Innengewinde6 Electrode holder 6.4 Internal thread
6.6 zylindrische Innenfläche6.6 cylindrical inner surface
7 Elektrode7 electrode
7.1 Emissionseinsatz7.1 Emission use
7.2 Rundring7.2 Round ring
7.3 Nut7.3 groove
7.4 Außengewinde7.4 external thread
7.5 Elektrodenhalter7.5 Electrode holder
7.6 zylindrische Außenfläche7.6 cylindrical outer surface
7.7 Oberfläche des Elektrodenhalters an der Elektrodenspitze7.7 Surface of the electrode holder at the electrode tip
7.11 mittige Oberfläche des Emissionseinsatzes7.11 central surface of the emission insert
7.12 periphere Oberfläche des Emis sionseinsatzes7.12 Peripheral surface of the emission insert
7.13 Übergangsfläche7.13 Transition area
7.14 Bohrung im Elektrodenhalter 7.57.14 Bore in the electrode holder 7.5
7.15 Ende vom Emissionseinsatz 7.17.15 End of emission use 7.1
7.16 Boden der Bohrung 7.147.16 Bottom of the bore 7.14
8 Düsenschutzkappenhalterung8 nozzle protection cap holder
9 Düsenschutzkappe9 nozzle protection cap
Al Flächeninhalt der Oberfläche 7.11Al surface area of the surface 7.11
A2 Flächeninhalt der Oberfläche 7.12 a Abstand zwischen der Oberfläche 7.7 des Elektrodenhalters 7.5 und der mittigen Oberfläche 7.11 des Emissionseinsatzes 7.1 b Abstand zwischen der Oberfläche 7.7 des Elektrodenhalters 7.5 und der peripheren Oberfläche 7.12 des Emissionseinsatzes 7.1 cl Durchmesser der Bohrung für den Emissionseinsatz 7.1 imA2 Surface area of the surface 7.12 a Distance between the surface 7.7 of the electrode holder 7.5 and the central surface 7.11 of the emissive insert 7.1b Distance between the surface 7.7 of the electrode holder 7.5 and the peripheral surface 7.12 of the emissive insert 7.1 cl Diameter of the hole for the emission insert 7.1 im
Elektrodenhalter 7.5 c2 Durchmesser des Emissionseinsatzes 7.1 d Durchmesser der Oberfläche 7.11 des Emissionseinsatzes 7.1 e Länge des Emissionseinsatzes 7.1 f Länge des zylindrischen Teils des Bohrung für den Emissionseinsatz 7.1 imElectrode holder 7.5 c2 Diameter of the emissive insert 7.1 d Diameter of the surface 7.11 of the emissive insert 7.1 e Length of the emissive insert 7.1 f Length of the cylindrical part of the bore for the emissive insert 7.1 im
Elektrodenhalter 7.5 g Breite der Kreisringfläche A2 α Winkel der Bohrung im Elektrodenhalter 7.5 ß Winkel des Emissionseinsatzes 7.1 γ Winkel in Oberfläche des Emissionseinsatzes 7 r Radius Electrode holder 7.5 g Width of the circular ring area A2 α Angle of the hole in the electrode holder 7.5 ß Angle of the emission insert 7.1 γ Angle in the surface of the emissive insert 7 r Radius

Claims

- 11 -Ansprüche - 11 claims
1. Elektrode (7) für einen Plasmabrenner, umfassend:A plasma torch electrode (7) comprising:
einen länglichen Elektrodenhalter (7.5) mit einer vorderen Fläche (7.7) an der Elektrodenspitze und einer Bohrung (7.14) die in der Elektrodenspitze entlang einer Mittelachse durch den Elektrodenhalter (7.5) angeordnet ist, undan elongated electrode holder (7.5) having a front surface (7.7) on the electrode tip and a bore (7.14) disposed in the electrode tip along a central axis through the electrode holder (7.5), and
einen Emissionseinsatz (7.1), der in der Bohrung (7.14) derart angeordnet ist, dass eine Emissionsfläche (7.11 und 7.12) von dem Emissionseinsatz (7.1) freiliegt,an emission insert (7.1) disposed in the bore (7.14) such that an emission surface (7.11 and 7.12) is exposed from the emission insert (7.1),
dadurch gekennzeichnet, dasscharacterized in that
die Emissionsfläche (7.11 und 7.12) gegenüber der vorderen Fläche (7.7) des Elektrodenhalters zurücksteht.the emission surface (7.11 and 7.12) protrudes from the front surface (7.7) of the electrode holder.
2. Elektrode (7) nach Anspruch 1 dadurch gekennzeichnet, dass die Emissionsfläche eine mittige Oberfläche (7.11) und eine periphere Oberfläche (7.12) umfasst.Second electrode (7) according to claim 1, characterized in that the emission surface comprises a central surface (7.11) and a peripheral surface (7.12).
3. Elektrode (7) nach Anspruch 2, dadurch gekennzeichnet, dass der Abstand a zwischen der mittigen Oberfläche (7.11) des Emissionseinsatzes (7.1) und der vorderen Fläche (7.7) des Elektrodenhalters (7.5) größer ist als der Abstand b zwischen der peripheren Oberfläche (7.12) des Emissionseinsatzes (7.1) und der vorderen Fläche (7.7) des Elektrodenhaltes (7.5) ist.3. electrode (7) according to claim 2, characterized in that the distance a between the central surface (7.11) of the emissive insert (7.1) and the front surface (7.7) of the electrode holder (7.5) is greater than the distance b between the peripheral Surface (7.12) of the emission insert (7.1) and the front surface (7.7) of the electrode holder (7.5).
4. Elektrode (7) nach Anspruch 2, dadurch gekennzeichnet, dass die periphere Oberfläche (7.12) schräg verläuft. - 12 -4. electrode (7) according to claim 2, characterized in that the peripheral surface (7.12) extends obliquely. - 12 -
5. Elektrode (7) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das von der Elektrodenspitze abgewandte Ende (7.15) des Emissionseinsatzes (7.1) kegelstumpfförmig ist.5. electrode (7) according to any one of the preceding claims, characterized in that the end remote from the electrode tip (7.15) of the emissive insert (7.1) is frustoconical.
6. Elektrode (7) nach Anspruch 5, dadurch gekennzeichnet, dass das von der Elektrodenspitze abgewandte Ende (7.15) unter einem Winkel ß im Bereich von 10° bis 90° kegelstumpfförmig verläuft.6. electrode (7) according to claim 5, characterized in that the end facing away from the electrode tip (7.15) at an angle ß in the range of 10 ° to 90 ° is frustoconical.
7. Elektrode (7) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Bohrung (7.14) einen kegelförmigen Boden (7.16) aufweist.7. electrode (7) according to any one of the preceding claims, characterized in that the bore (7.14) has a conical bottom (7.16).
8. Elektrode (7) nach Anspruch 7, dadurch gekennzeichnet, dass der kegelförmige Boden (7.16) einen Winkel α im Bereich von 80° bis 160° aufweist.8. electrode (7) according to claim 7, characterized in that the conical bottom (7.16) has an angle α in the range of 80 ° to 160 °.
9. Elektrode (7) nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Elektrodenaufhahme (6) mit einem Innengewinde (6.4) aufweist und der Elektrodenhalter (7.5) ein Außengewinde (7.4) und eine Nut (7.3) in der zylindrischen Außenfläche (7.6) aufweist, sowie der Elektrodenhalter (7.5) mit der Elektrodenaufhahme (6) über das Außengewinde (7.4) und das Innengewinde (6.4) verschraubt abgedichtet ist.9. electrode (7) according to any one of the preceding claims, characterized in that it comprises an electrode holder (6) with an internal thread (6.4) and the electrode holder (7.5) has an external thread (7.4) and a groove (7.3) in the cylindrical outer surface (7.6), and the electrode holder (7.5) with the Elektrodenaufhahme (6) via the external thread (7.4) and the internal thread (6.4) is screwed sealed.
10. Elektrode nach Anspruch 9, dadurch gekennzeichnet, dass in der Nut (7.3) ein Rundring (7.2) zum Abdichten angeordnet ist.10. An electrode according to claim 9, characterized in that in the groove (7.3) a circular ring (7.2) is arranged for sealing.
11. Elektrode (7) für einen Plasmabrenner, umfassend:An electrode (7) for a plasma torch, comprising:
eine Elektrodenaufhahme (6) undan electrode holder (6) and
einen Elektrodenhalter (7.5),an electrode holder (7.5),
wobei die Elektrodenaufhahme (6) ein Innengewinde (6.4) aufweist und der Elektrodenhalter (7.5) ein Außengewinde (7.4) und eine Nut (7.3) in der zylindrischen - 13 -wherein the Elektrodenaufhahme (6) has an internal thread (6.4) and the electrode holder (7.5) has an external thread (7.4) and a groove (7.3) in the cylindrical - 13 -
Außenfläche (7.6) aufweist, sowie der Elektrodenhalter (7.5) mit der Elektrodenaufhahme (6) über das Außengewinde (7.4) und das Innengewinde (6.4) verschraubt und mittels des Rundrings (7.2) abgedichtet ist.Having outer surface (7.6), and the electrode holder (7.5) with the Elektrodenaufhahme (6) via the external thread (7.4) and the internal thread (6.4) screwed and sealed by means of the circular ring (7.2).
12. Elektrode (7) nach Anspruch 11, dadurch gekennzeichnet, dass der Elektrodenhalter (7.5) länglich ist und eine vordere Fläche (7.7) an der Elektrodenspitze und eine Bohrung (7.14) aufweist, die an der Elektrodenspitze entlang einer Mittelachse durch den Elektrodenhalter (7.5) angeordnet ist, und ein Emissionseinsatz (7.1) vorgesehen ist, der in der Bohrung (7.14) derart angeordnet ist, dass eine Emissionsfläche (7.11 und 7.12) von dem Emissionseinsatz (7.1) freiliegt, wobei die Emissionsfläche (7.11 und 7.12) gegenüber der vorderen Fläche (7.7) des Elektrodenhalters (7.5) zurücksteht.12. Electrode (7) according to claim 11, characterized in that the electrode holder (7.5) is elongate and has a front surface (7.7) on the electrode tip and a bore (7.14), which at the electrode tip along a central axis through the electrode holder ( 7.5), and an emissive insert (7.1) is provided which is disposed in the bore (7.14) such that an emissive surface (7.11 and 7.12) is exposed from the emissive insert (7.1), the emissive surface (7.11 and 7.12) facing the front surface (7.7) of the electrode holder (7.5) protrudes.
13. Elektrode nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Emissionsfläche eine mittige Oberfläche (7.11) und eine periphere Oberfläche (7.12) umfasst.13. An electrode according to claim 11 or 12, characterized in that the emission surface comprises a central surface (7.11) and a peripheral surface (7.12).
14. Elektrode (7) nach Anspruch 13, dadurch gekennzeichnet, dass der Abstand a zwischen der mittigen Oberfläche (7.11) des Emissionseinsatzes (7.1) und der vorderen Fläche (7.7) des Elektrodenhalters (7.5) größer ist als der Abstand b zwischen der peripheren Oberfläche (7.12) des Emissionseinsatzes (7.1) und der vorderen Fläche (7.7) des Elektrodenhaltes (7.5) ist.14, electrode (7) according to claim 13, characterized in that the distance a between the central surface (7.11) of the emissive insert (7.1) and the front surface (7.7) of the electrode holder (7.5) is greater than the distance b between the peripheral Surface (7.12) of the emission insert (7.1) and the front surface (7.7) of the electrode holder (7.5).
15. Elektrode (7) nach Anspruch 19, dadurch gekennzeichnet, dass die periphere Oberfläche (7.12) schräg verläuft.15. electrode (7) according to claim 19, characterized in that the peripheral surface (7.12) extends obliquely.
16. Elektrode (7) nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass das von der Elektrodenspitze abgewandte Ende (7.15) des Emissionseinsatzes (7.1) kegelstumpfförrnig ist. - 14 -16. Electrode (7) according to any one of claims 11 to 14, characterized in that the end facing away from the electrode tip (7.15) of the emissive insert (7.1) is truncated frustum. - 14 -
17. Elektrode (7) nach Anspruch 16, dadurch gekennzeichnet, dass das von der Elektrodenspitze abgewandte Ende (7.15) unter einem Winkel ß im Bereich von 10° bis 90° kegelstumpffδrmig verläuft.17. Electrode (7) according to claim 16, characterized in that the end facing away from the electrode tip (7.15) at an angle ß in the range of 10 ° to 90 ° frusto-conical.
18. Elektrode (7) nach einem der Ansprüche 11 bis 17, dadurch gekennzeichnet, dass die Bohrung (7.14) einen kegelförmigen Boden (7.16) aufweist.18 electrode (7) according to any one of claims 11 to 17, characterized in that the bore (7.14) has a conical bottom (7.16).
19. Elektrode (7) nach Anspruch 18, dadurch gekennzeichnet, dass der kegelförmige Boden (7.16) einen Winkel α im Bereich von 80° bis 160° aufweist.19 electrode (7) according to claim 18, characterized in that the conical bottom (7.16) has an angle α in the range of 80 ° to 160 °.
20. Plasmabrennerkopf (1) mit einer Elektrode (7) nach einem der vorangehenden Ansprüche. 20. plasma burner head (1) having an electrode (7) according to one of the preceding claims.
EP09804234.4A 2008-12-18 2009-11-27 Electrode for a plasma burner Active EP2210455B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL09804234T PL2210455T3 (en) 2008-12-18 2009-11-27 Electrode for a plasma burner
SI200930863T SI2210455T1 (en) 2008-12-18 2009-11-27 Electrode for a plasma burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008062731A DE102008062731C5 (en) 2008-12-18 2008-12-18 Electrode for a plasma torch
PCT/DE2009/001692 WO2010037380A2 (en) 2008-12-18 2009-11-27 Electrode for a plasma burner

Publications (2)

Publication Number Publication Date
EP2210455A2 true EP2210455A2 (en) 2010-07-28
EP2210455B1 EP2210455B1 (en) 2013-12-25

Family

ID=41786413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09804234.4A Active EP2210455B1 (en) 2008-12-18 2009-11-27 Electrode for a plasma burner

Country Status (17)

Country Link
US (1) US8710397B2 (en)
EP (1) EP2210455B1 (en)
JP (1) JP5643221B2 (en)
KR (1) KR101607358B1 (en)
CN (1) CN102217428B (en)
BR (1) BRPI0922153B1 (en)
CA (1) CA2739643C (en)
DE (1) DE102008062731C5 (en)
DK (1) DK2210455T3 (en)
ES (1) ES2453621T3 (en)
HR (1) HRP20140177T1 (en)
MX (1) MX2011005715A (en)
PL (1) PL2210455T3 (en)
RU (1) RU2526862C2 (en)
SI (1) SI2210455T1 (en)
WO (1) WO2010037380A2 (en)
ZA (1) ZA201102990B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011210453A (en) * 2010-03-29 2011-10-20 Ehime Univ In-liquid plasma generating device, cleaning device using this, repairing device, cleaning method, and repairing method
EP2642832A1 (en) * 2012-03-23 2013-09-25 Manfred Hollberg Plasma electrode for a plasma arc torch with exchangeable electrode tip
WO2013169710A1 (en) * 2012-05-10 2013-11-14 Sulzer Metco (Us) Inc. Cathode interface for a plasma gun and method of making and using the same
US9949356B2 (en) 2012-07-11 2018-04-17 Lincoln Global, Inc. Electrode for a plasma arc cutting torch
DE102012213453A1 (en) * 2012-07-31 2014-02-06 Siemens Aktiengesellschaft Torch for tungsten inert gas welding
USD768096S1 (en) * 2014-11-12 2016-10-04 Medicus Engineering Aps Electrode
JP1527635S (en) * 2015-01-30 2015-06-29
JP1527851S (en) * 2015-01-30 2015-06-29
USD775249S1 (en) * 2015-04-01 2016-12-27 Koike Sanso Kogyo Co., Ltd. Inner nozzle for plasma torch
CN107072027B (en) * 2015-04-12 2019-05-21 衢州迪升工业设计有限公司 Plasma gasification spray gun
US10639748B2 (en) 2017-02-24 2020-05-05 Lincoln Global, Inc. Brazed electrode for plasma cutting torch
DE102017112821A1 (en) * 2017-06-12 2018-12-13 Kjellberg-Stiftung Electrodes for gas- and liquid-cooled plasma torches, arrangement of an electrode and a cooling tube, gas guide, plasma torch, method for guiding gas in a plasma torch and method for operating a plasma torch
TR202106962A2 (en) * 2021-04-21 2021-06-21 Yildirim Ahmet ELECTRODE FOR PLASMA CUTTING TORCHES MADE BY SURFACE INCREASE OF THE SURFACES OF THE SPREADER CUTTER (CUT) IT IS CONNECTED TO THE ELECTRODE BODY

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7012A (en) * 1850-01-15 Improvement in mowing-machines
DE1920411C3 (en) * 1969-04-22 1978-03-23 Institut Elektrosvarki Imeni E.O. Patona Akademii Nauk Ukrainskoj Ssr, Kiew (Sowjetunion) Non-consumable composite electrode for use in electric arc processes
DD87361A1 (en) * 1970-10-23 1972-01-20 Electric discharge system for oxidizing gases
JP2506666B2 (en) * 1986-05-20 1996-06-12 松下電器産業株式会社 Plasma cutting torch
JPS6340299A (en) * 1986-08-05 1988-02-20 株式会社小松製作所 Electrode construction of non-transferring plasma torch
FR2650470B1 (en) * 1989-07-28 1992-09-04 Soudure Autogene Francaise
US5023425A (en) * 1990-01-17 1991-06-11 Esab Welding Products, Inc. Electrode for plasma arc torch and method of fabricating same
US5140130A (en) * 1990-12-05 1992-08-18 Kabushiki Kaisha Komatsu Seisakusho Construction of nozzle for plasma cutting torch
US5083055A (en) 1990-12-17 1992-01-21 General Electric Company Notched carbon brush for rotating electric machines
JP3010879B2 (en) * 1992-02-25 2000-02-21 松下電器産業株式会社 Plasma torch
US5464962A (en) * 1992-05-20 1995-11-07 Hypertherm, Inc. Electrode for a plasma arc torch
JP3179656B2 (en) * 1994-06-24 2001-06-25 株式会社田中製作所 Electrodes for plasma arc generation
JPH09192844A (en) * 1996-01-18 1997-07-29 Showa Giken Kk Electrode of plasma cutting torch
US5951888A (en) * 1998-07-09 1999-09-14 The Esab Group, Inc. Plasma electrode with arc-starting grooves
US6020572A (en) * 1998-08-12 2000-02-01 The Esab Group, Inc. Electrode for plasma arc torch and method of making same
JP2001150143A (en) * 1999-11-26 2001-06-05 Komatsu Sanki Kk Electrode for plasma processing and plasma arc cutting machine
US6424082B1 (en) * 2000-08-03 2002-07-23 Hypertherm, Inc. Apparatus and method of improved consumable alignment in material processing apparatus
US6329627B1 (en) * 2000-10-26 2001-12-11 American Torch Tip Company Electrode for plasma arc torch and method of making the same
KR100933480B1 (en) 2001-03-09 2009-12-23 하이퍼썸, 인크. Composite electrode for a plasma arc torch
CN2497925Y (en) * 2001-09-11 2002-07-03 王志康 Plasma cutting electrode
CN1267239C (en) * 2003-09-03 2006-08-02 上海市机械制造工艺研究所 Plasma cutting electrode vacuum soldering method
FR2859401B1 (en) * 2003-09-10 2006-03-17 Le Bronze Ind Sa RESISTOR WELDING ELECTRODE AND METHOD FOR MANUFACTURING SAME
US7081597B2 (en) * 2004-09-03 2006-07-25 The Esab Group, Inc. Electrode and electrode holder with threaded connection
JP2007066677A (en) * 2005-08-31 2007-03-15 Koike Sanso Kogyo Co Ltd Electrode for plasma torch
US8101882B2 (en) 2005-09-07 2012-01-24 Hypertherm, Inc. Plasma torch electrode with improved insert configurations

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010037380A2 *

Also Published As

Publication number Publication date
CA2739643C (en) 2014-12-30
PL2210455T3 (en) 2014-05-30
DE102008062731C5 (en) 2012-06-14
CA2739643A1 (en) 2010-04-08
DK2210455T3 (en) 2014-03-17
DE102008062731B4 (en) 2010-12-23
DE102008062731B9 (en) 2012-02-23
JP5643221B2 (en) 2014-12-17
US8710397B2 (en) 2014-04-29
HRP20140177T1 (en) 2014-03-28
WO2010037380A2 (en) 2010-04-08
KR101607358B1 (en) 2016-03-29
KR20110094292A (en) 2011-08-23
US20110240609A1 (en) 2011-10-06
SI2210455T1 (en) 2014-04-30
RU2011119977A (en) 2012-11-27
DE102008062731A1 (en) 2010-07-01
RU2526862C2 (en) 2014-08-27
BRPI0922153B1 (en) 2019-07-16
JP2012512510A (en) 2012-05-31
EP2210455B1 (en) 2013-12-25
CN102217428A (en) 2011-10-12
WO2010037380A3 (en) 2011-03-03
CN102217428B (en) 2014-10-08
ZA201102990B (en) 2012-08-29
ES2453621T3 (en) 2014-04-08
BRPI0922153A2 (en) 2018-12-11
MX2011005715A (en) 2011-06-17

Similar Documents

Publication Publication Date Title
EP2210455B1 (en) Electrode for a plasma burner
EP2417840B1 (en) Cooling pipes, electrode holders and electrode for an arc plasma torch and assemblies made thereof and arc plasma torch comprising the same
DE69418894T2 (en) PLASMA TORCH
DE102008018530B4 (en) A nozzle for a liquid-cooled plasma torch, arrangement of the same and a nozzle cap and liquid-cooled plasma torch with such an arrangement
EP2465334B1 (en) Protective nozzle cap, protective nozzle cap retainer, and arc plasma torch having said protective nozzle cap and/or said protective nozzle cap retainer
DE69014289T3 (en) Electrode for plasma arc torches.
DE102009006132C5 (en) Nozzle for a liquid-cooled plasma torch, nozzle cap for a liquid-cooled plasma torch and plasma torch head with the same
EP2804450B1 (en) Insulating member for a plasma arc torch consisting of several parts, torch and related assemblies equipped with the same and associated method
DE102004049445B4 (en) plasma torch
EP2449862B1 (en) Nozzle for a liquid-cooled plasma torch and plasma torch head having the same
DE102011088433A1 (en) Process and plasma arc torch system for marking and cutting workpieces with the same set of auxiliaries
EP2849542B1 (en) Electrode structure for plasma cutting torches
EP2667689B1 (en) Electrode for plasma cutting torch and use of same
DE102012213453A1 (en) Torch for tungsten inert gas welding
DE102007032496B3 (en) Apparatus for generating a plasma jet
DE69901731T2 (en) WEARING PART FOR ARC BURNERS MADE FROM COPPER ALLOY
DE1907252A1 (en) Equipment for plasma processing of materials
DE102009031857C5 (en) Nozzle for a liquid-cooled plasma torch and plasma torch head with the same
DE102009060849A1 (en) Nozzle for plasma torch head of liquid-cooled plasma torch, is provided with nozzle bore for outlet of plasma gas jet at nozzle tip, section, outer surface of which is substantially cylindrical, and section
DE102020125073A1 (en) Electrode for a plasma cutting torch, arrangement with the same, plasma cutting torch with the same and method for plasma cutting
DE202009012491U1 (en) Nozzle for a liquid-cooled plasma torch and plasma torch head with the same

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20091222

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA RS

R17D Deferred search report published (corrected)

Effective date: 20110303

RBV Designated contracting states (corrected)

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JEHNERT, KATRIN

Inventor name: KRINK, VOLKER

Inventor name: KROSCHWALD, MARTIN

Inventor name: LAURISCH, FRANK

Inventor name: STEUDTNER, THOMAS

Inventor name: REINKE, RALF-PETER

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20130715

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

BECA Be: change of holder's address

Owner name: KJELLBERG FINSTERWALDE PLASMA UND MASCHINEN G.M.B.

Effective date: 20131225

Owner name: OSCAR-KJELLBERG-STRASSE 20,D-03238 FINSTERWALDE

Effective date: 20131225

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 647176

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009008595

Country of ref document: DE

Effective date: 20140213

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20140177

Country of ref document: HR

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: KJELLBERG FINSTERWALDE PLASMA UND MASCHINEN GMBH

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KAMINSKI HARMANN PATENTANWAELTE AG, LI

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20140314

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20140177

Country of ref document: HR

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2453621

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20140408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140325

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 16015

Country of ref document: SK

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140425

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140428

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009008595

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20140926

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009008595

Country of ref document: DE

Effective date: 20140926

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E021620

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141127

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141127

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131225

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20181120

Year of fee payment: 10

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20191119

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20191121

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20191126

Year of fee payment: 11

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20201117

Year of fee payment: 12

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20201130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201127

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20211119

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20211123

Year of fee payment: 13

Ref country code: FI

Payment date: 20211117

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SI

Payment date: 20211117

Year of fee payment: 13

Ref country code: CH

Payment date: 20211123

Year of fee payment: 13

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20221116

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20221117

Year of fee payment: 14

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221128

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20230712

REG Reference to a national code

Ref country code: HR

Ref legal event code: ODRP

Ref document number: P20140177

Country of ref document: HR

Payment date: 20231108

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20231124

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20231107

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20231218

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20231123

Year of fee payment: 15

Ref country code: IT

Payment date: 20231124

Year of fee payment: 15

Ref country code: HR

Payment date: 20231108

Year of fee payment: 15

Ref country code: FR

Payment date: 20231123

Year of fee payment: 15

Ref country code: DE

Payment date: 20231127

Year of fee payment: 15

Ref country code: CZ

Payment date: 20231108

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PL

Payment date: 20231102

Year of fee payment: 15

Ref country code: BE

Payment date: 20231124

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221127

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 647176

Country of ref document: AT

Kind code of ref document: T

Effective date: 20231127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221127