EP1797747A2 - Plasmabrenner - Google Patents
PlasmabrennerInfo
- Publication number
- EP1797747A2 EP1797747A2 EP05790759A EP05790759A EP1797747A2 EP 1797747 A2 EP1797747 A2 EP 1797747A2 EP 05790759 A EP05790759 A EP 05790759A EP 05790759 A EP05790759 A EP 05790759A EP 1797747 A2 EP1797747 A2 EP 1797747A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- secondary gas
- plasma torch
- nozzle
- plasma
- nozzle cap
- 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
Links
- 230000007704 transition Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 abstract description 15
- 239000007789 gas Substances 0.000 description 78
- 238000005520 cutting process Methods 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008674 spewing Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- H05H1/3457—Nozzle protection devices
-
- 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 a plasma torch according to the preamble of claim 1, which serves both for dry cutting and underwater cutting of various metallic workpieces.
- an arc In plasma cutting, an arc (pilot arc) is first ignited between a cathode (electrode) and anode (nozzle) and then transferred directly to a workpiece to produce a cut.
- This arc creates a plasma, which is a thermally highly heated, electrically conductive gas consisting of positive and negative ions, electrons, and excited and neutral atoms and molecules.
- gases such as argon, hydrogen, nitrogen, oxygen or air are used. These gases are ionized and dissociated by the energy of the arc. The resulting plasma jet is used to cut the workpiece
- a modern plasma torch is made of grand components such as torch body, electrode (cathode), nozzle, one or more protective caps surrounding the nozzle, and the Connections used to supply the burner with electricity, gases and / or liquids.
- the nozzle may consist of one or more parts.
- the nozzle is held by a nozzle cap. Cooling water flows between the nozzle and the nozzle cap. The secondary gas flows between the nozzle and protective cap.
- the nozzle cap can be omitted. Then the secondary gas flows between the nozzle and protective cap.
- the electrode and the nozzle are arranged in a certain spatial relationship to one another and delimit a space - the plasma chamber in which this plasma jet is generated.
- the plasma jet may be varied in parameters such as e.g. Diameter, temperature, energy density and flow rate of the plasma gas are strongly influenced by the design of the nozzle and electrode.
- the electrodes and nozzles are made of different materials and in different shapes.
- Nozzles are usually made of copper and water cooled directly or indirectly. Depending on the cutting task and electrical power of the plasma torch, nozzles are used which have different inner contours and openings with different diameters and thus provide the optimum cutting results.
- nozzles are enclosed by protective caps. Through the gap between the nozzle and cap flows Secondary gas. This serves to create a defined atmosphere, to constrict the plasma jet and to protect against splashing during piercing.
- the selection of the secondary gas plays an important role.
- nitrogen is used as secondary gas.
- the plasma jet is flowed around with the secondary gas, which is passed between the nozzle cap and protective cap through the resulting passage and exits from the annular opening in the direction of the workpiece. This ensures a substantially non-oxidizing atmosphere on the workpiece. This effect can be enhanced by adding small amounts of hydrogen (eg 1 to 20%).
- the secondary gas passing through an annular secondary gas passage is aligned by an insulator between the nozzle cap and the protective cap.
- the insulator has small holes which are shaped so that the secondary gas exits along the axial direction of the burner body and surrounds the plasma arc with sufficient quantity and speed.
- the secondary current is generated as a circulating current in which the straightening channel formed in the insulator is formed spirally with respect to the central region of the burner.
- a protective cap directs a secondary gas flow along the arcuate surface of a nozzle cap onto the arc. During cutting, the velocity of this flow is reduced so that the arc is not destabilized. This cap contains some vents that divert the excess gas away.
- the protective cap and secondary gas flow protect the nozzle from molten metal that can splash from a workpiece onto the nozzle and cause damage or parallel arcing.
- the plasma jet is unstable by the direct flow of the secondary gas, in particular at a secondary gas flow rate that is greater than the plasma gas flow rate.
- the instability is especially when driving over technologically related kerfs and direction and speed changes, such. noticeable at corners and at the beginning of cutting.
- the cutting arc stabilizes only slowly. It comes to swinging the cutting arc. This swinging forms on the resulting cut edge and thus leads to a deterioration in quality.
- a secondary gas flows in a space between a nozzle with an elongated nozzle mouth and a protective cap.
- the outlet opening of the protective cap is shaped so that the nozzle mouth is partially between the inlet and the outlet of the outlet opening.
- Such an arrangement produces a substantially columnar flow of secondary gas around the plasma jet without substantially disturbing the plasma jet and is intended to protect the nozzle from spattering metal of the workpiece.
- Disadvantage of this method is that the nozzle mouth is insufficiently protected against high-spraying metal especially when piercing the plasma jet into the workpiece.
- the secondary gas can not be targeted in the plasma jet to achieve a good quality cut.
- the active participation of the secondary gas in the plasma process is desired.
- the secondary gas nitrogen not only acts as a protective gas to protect the interfaces of the oxidizing oxygen in the ambient air, but also actively participates in the plasma process. It reduces the surface tension of the melt, which becomes less viscous and better expelled from the kerf. The result is a beard-free cut. This is not possible with the arrangement described in US Pat. No. 6,207,923 Bl.
- Even when using oxygen as the plasma gas for cutting structural steels, different effects on the quality of cut can be achieved by different composition of the secondary gas, for example different nitrogen and oxygen fractions.
- the invention is therefore based on the object to eliminate the disadvantages of the prior art described.
- the functions of the secondary gas such as protection against high-velocity metal, creation of a defined atmosphere around the plasma jet and the active participation of the secondary gas in the plasma process should be ensured without affecting the plasma jet in its stability.
- the subclaims relate to advantageous developments of the invention.
- the invention generates a homogeneous secondary gas flow.
- This homogeneous secondary gas flow leads to a stabilization of the plasma jet.
- the oscillation of the cutting arc in difficult to be controlled technologically caused cutting situations, such as driving over the kerf and the corner and cutting start is prevented. This results in a significant improvement in the quality of the cut and a higher cutting speed.
- the secondary gas is passed through a secondary gas guide part in the secondary gas channel such that the secondary gas flow initially on a nearly cylindrical first surface of the nozzle or nozzle cap, which is directed parallel to the longitudinal axis of the plasma torch hits. Thereafter, the secondary gas is passed through the secondary gas channel part, which is bounded by almost conical mantle or inner surfaces of the nozzle or the nozzle cap and nozzle cap, to the front end of the plasma torch and then fed at an angle of almost 90 ° to the longitudinal axis of the plasma torch a plasma jet.
- the particularly good homogeneity of the secondary gas ie the particularly good distribution around a plasma jet
- the secondary gas is achieved by initially directing the secondary gas flow onto the jacket surface of the plane extending substantially at right angles to the longitudinal axis of the plasma torch Nozzle or the nozzle cap hits and that is further reset from the front end of the plasma torch and thus the secondary gas has additional time to disperse.
- the secondary gas rotated by a suitable execution of the secondary gas guide part, for example by displacement of the passages. Then the supply of the secondary gas to the plasma jet is not radial, but tangential.
- the plasma jet is not unstable in this arrangement due to the great homogeneity of the secondary gas flow, but also retains its stability in transition phases.
- this effect is reinforced even if, after passing through the Sekundärgasbowungsteils the secondary gas initially not only on the almost cylindrical first lateral surface of the nozzle or the nozzle cap, but at the same time flows into a relaxation room expansion, which allows a greater relaxation of the secondary gas, before the secondary gas then over the conical shell or inner surfaces of the plasma jet is supplied radially or tangentially.
- this area of the nozzle cap with expansion chamber extension has a smaller diameter than the beginning of the subsequent conical section.
- the nozzle cap is often omitted. Then the nozzle takes over the space-limiting task of the nozzle cap.
- the nozzle is geometrically formed in this case as the nozzle cap.
- Figure 1 is a partial sectional view of the front portion of a
- Plasma torch according to a particular embodiment of the invention; Figure 1.1 to 1.12 details of Figure 1 with variants of the design of the secondary gas duct.
- Fig. 2.2 shows another embodiment of a secondary gas guide part in
- FIG. 1 shows a plasma torch 1 according to a particular embodiment of the invention.
- the plasma torch 1 has a torch body 2 with an electrode 3 and a nozzle 4 defining a longitudinal axis L of the plasma torch 1.
- the electrode 3 and the nozzle are arranged in a particular embodiment of the invention.
- a nozzle cap 5 is arranged coaxially with the longitudinal axis L of the plasma burner 1 and holds the nozzle 4. Between the nozzle 4 and the nozzle cap
- the cooling water is supplied via a water feed WV and flows through a water return WR.
- An annular secondary gas guide member 8 having a plurality of holes in the form of bores, only one of which is denoted by the reference numeral 8a, is in a formed between the nozzle cap 5 and a nozzle cap 7 secondary gas channel 9 between a secondary gas inlet 8b and the front end of the secondary gas channel 9 arranged that the flowing through the passage 8 a secondary gas SG on a nearly cylindrical first lateral surface of the nozzle cap 5, which results in a first cylindrical portion 5 a of the nozzle cap 5 hits.
- the secondary gas SG is then passed through the secondary gas channel 9, which is bounded by a nearly conical second surface of the nozzle cap 5 in a lower portion 5 b and a corresponding conical inner surface 7 b of the nozzle cap 7, to the front end of the plasma torch 1, then at an angle of nearly 90 ° to the longitudinal axis L of the plasma torch. 1 a plasma jet (not shown) and exits through a Austrittsöfmung 7 a of the nozzle cap 7 from.
- the rotating secondary gas SG flows around the plasma jet after it leaves a nozzle opening 4a and additionally creates a defined atmosphere around the plasma jet.
- the passages 8 a of the Sekundärgasf ⁇ ihrungsteils 8 are arranged so that a rotating flow of the secondary gas SG is formed.
- transitions between the first and second lateral surfaces of the nozzle cap 5 and corresponding first and second inner surfaces of the nozzle protection cap 7 can be sharp-edged (FIGS. 1.1-1.3), with bevels (FIGS. 1.4-1.6) or radii (FIGS. 1.7-1.9). There is also the possibility of combinations of radii and chamfers at the transitions.
- Figures 1.10 -1.12 show embodiments with a relaxation space extension 10 into which the secondary gas SG flows out of the passages 8a of the secondary gas guide part 8 in order to further improve the stability of the plasma jet.
- This relaxation space extension 10 may have, for example, a round (FIG. 1.10), a rectangular (FIG. 1.11) or a multi-faceted (FIG. 1.12) shape.
- the 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.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05790759T PL1797747T3 (pl) | 2004-10-08 | 2005-09-28 | Palnik plazmowy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004049445.2A DE102004049445C5 (de) | 2004-10-08 | 2004-10-08 | Plasmabrenner |
PCT/DE2005/001714 WO2006039890A2 (de) | 2004-10-08 | 2005-09-28 | Plasmabrenner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1797747A2 true EP1797747A2 (de) | 2007-06-20 |
EP1797747B1 EP1797747B1 (de) | 2017-06-28 |
Family
ID=35456944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05790759.4A Active EP1797747B1 (de) | 2004-10-08 | 2005-09-28 | Plasmabrenner |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1797747B1 (de) |
DE (3) | DE102004049445C5 (de) |
ES (1) | ES2641235T3 (de) |
PL (1) | PL1797747T3 (de) |
WO (1) | WO2006039890A2 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0608903A2 (pt) | 2005-05-11 | 2010-02-17 | Hypertherm Inc | geração de jatos distintos de gás em aplicações de maçarico a arco de plasma |
US8097828B2 (en) | 2006-05-11 | 2012-01-17 | Hypertherm, Inc. | Dielectric devices for a plasma arc torch |
DE202009018173U1 (de) | 2009-08-11 | 2011-03-17 | Kjellberg Finsterwalde Plasma Und Maschinen Gmbh | Düsenschutzkappe und Düsenschutzkappenhalter sowie Lichtbogenplasmabrenner mit derselben und/oder demselben |
DE102010005617A1 (de) | 2009-10-01 | 2011-04-07 | Kjellberg Finsterwalde Plasma Und Maschinen Gmbh | Verfahren zum Plasmaschneiden eines Werkstücks mittels einer Plasmaschneidanlage |
IT1399320B1 (it) | 2010-04-12 | 2013-04-16 | Cebora Spa | Torcia per il taglio al plasma. |
DE202011052130U1 (de) | 2011-11-28 | 2012-12-05 | Sato Schneidsysteme Anton Hubert E.K. | Plasmabrenner |
US9949356B2 (en) | 2012-07-11 | 2018-04-17 | Lincoln Global, Inc. | Electrode for a plasma arc cutting torch |
US8698036B1 (en) * | 2013-07-25 | 2014-04-15 | Hypertherm, Inc. | Devices for gas cooling plasma arc torches and related systems and methods |
US9560733B2 (en) | 2014-02-24 | 2017-01-31 | Lincoln Global, Inc. | Nozzle throat for thermal processing and torch equipment |
US9572242B2 (en) | 2014-05-19 | 2017-02-14 | Lincoln Global, Inc. | Air cooled plasma torch and components thereof |
US9398679B2 (en) | 2014-05-19 | 2016-07-19 | Lincoln Global, Inc. | Air cooled plasma torch and components thereof |
US9572243B2 (en) | 2014-05-19 | 2017-02-14 | Lincoln Global, Inc. | Air cooled plasma torch and components thereof |
US9730307B2 (en) | 2014-08-21 | 2017-08-08 | Lincoln Global, Inc. | Multi-component electrode for a plasma cutting torch and torch including the same |
US9681528B2 (en) | 2014-08-21 | 2017-06-13 | Lincoln Global, Inc. | Rotatable plasma cutting torch assembly with short connections |
US9736917B2 (en) | 2014-08-21 | 2017-08-15 | Lincoln Global, Inc. | Rotatable plasma cutting torch assembly with short connections |
US9457419B2 (en) | 2014-09-25 | 2016-10-04 | Lincoln Global, Inc. | Plasma cutting torch, nozzle and shield cap |
US9686848B2 (en) * | 2014-09-25 | 2017-06-20 | Lincoln Global, Inc. | Plasma cutting torch, nozzle and shield cap |
DE102016010341A1 (de) | 2015-08-28 | 2017-03-02 | Lincoln Global, Inc. | Plasmabrenner und komponenten des plasmabrenners |
US10863610B2 (en) | 2015-08-28 | 2020-12-08 | Lincoln Global, Inc. | Plasma torch and components thereof |
DE102016214146A1 (de) | 2016-08-01 | 2018-02-01 | Kjellberg Stiftung | Plasmabrenner |
DE102016219350A1 (de) | 2016-10-06 | 2018-04-12 | Kjellberg-Stiftung | Düsenschutzkappe, Lichtbogenplasmabrenner mit dieser Düsenschutzkappe sowie eine Verwendung des Lichtbogenplasmabrenners |
US10639748B2 (en) | 2017-02-24 | 2020-05-05 | Lincoln Global, Inc. | Brazed electrode for plasma cutting torch |
USD861758S1 (en) | 2017-07-10 | 2019-10-01 | Lincoln Global, Inc. | Vented plasma cutting electrode |
US10589373B2 (en) | 2017-07-10 | 2020-03-17 | Lincoln Global, Inc. | Vented plasma cutting electrode and torch using the same |
WO2023020893A1 (de) | 2021-08-16 | 2023-02-23 | Kjellberg Stiftung | Verfahren zum plasmaschneiden von werkstücken |
DE102021005500A1 (de) | 2021-08-16 | 2023-02-16 | Kjellberg-Stiftung | Verfahren zum Plasmaschneiden von Wertstücken |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5317126A (en) | 1992-01-14 | 1994-05-31 | Hypertherm, Inc. | Nozzle and method of operation for a plasma arc torch |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
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US3641308A (en) * | 1970-06-29 | 1972-02-08 | Chemetron Corp | Plasma arc torch having liquid laminar flow jet for arc constriction |
DE2642649A1 (de) * | 1976-09-22 | 1978-03-23 | Nuc Weld Gmbh | Plasmabrenner |
DE3050798C2 (de) * | 1979-08-28 | 1984-10-31 | Union Carbide Corp | Plasmabrenner |
US4311897A (en) * | 1979-08-28 | 1982-01-19 | Union Carbide Corporation | Plasma arc torch and nozzle assembly |
US4361748A (en) * | 1981-01-30 | 1982-11-30 | Couch Jr Richard W | Cooling and height sensing system for a plasma arc cutting tool |
DE3641308A1 (de) | 1986-12-03 | 1988-06-16 | Weisse Hans Dietrich | Schaltungsanordnung mit einer von einer ein- oder mehrphasigen spannung beaufschlagten, gesteuerten gleichrichterbrueckenschaltung und einem von dieser gespeisten wechselrichter |
IT1191365B (it) * | 1986-06-26 | 1988-03-16 | Cebora Spa | Circuito di comando per una apparecchiatura di talgio o saldatura al plasma ad arco trasferito |
DD282349A7 (de) * | 1988-03-10 | 1990-09-12 | Finsterwalde Schweisstechnik | Plasmaschmelzschneidbrenner zum schneiden metallischer werkstoffe unter wasser |
US5132512A (en) * | 1988-06-07 | 1992-07-21 | Hypertherm, Inc. | Arc torch nozzle shield for plasma |
US5695662A (en) * | 1988-06-07 | 1997-12-09 | Hypertherm, Inc. | Plasma arc cutting process and apparatus using an oxygen-rich gas shield |
US5023425A (en) * | 1990-01-17 | 1991-06-11 | Esab Welding Products, Inc. | Electrode for plasma arc torch and method of fabricating same |
US5393952A (en) * | 1991-02-28 | 1995-02-28 | Kabushiki Kaisha Komatsu Seisakusho | Plasma torch for cutting use with nozzle protection cap having annular secondary GPS passage and insulator disposed in the secondary gas passage |
EP0794697B2 (de) * | 1991-04-12 | 2009-12-16 | Hypertherm, Inc. | Lichtbogen-Plasmaschneidvorrichtung |
US5124525A (en) * | 1991-08-27 | 1992-06-23 | Esab Welding Products, Inc. | Plasma arc torch having improved nozzle assembly |
US5308949A (en) * | 1992-10-27 | 1994-05-03 | Centricut, Inc. | Nozzle assembly for plasma arc cutting torch |
US5624586A (en) * | 1995-01-04 | 1997-04-29 | Hypertherm, Inc. | Alignment device and method for a plasma arc torch system |
JPH08215856A (ja) * | 1995-02-13 | 1996-08-27 | Komatsu Sanki Kk | プラズマ切断方法 |
US5747767A (en) * | 1995-09-13 | 1998-05-05 | The Esab Group, Inc. | Extended water-injection nozzle assembly with improved centering |
US6215090B1 (en) * | 1998-03-06 | 2001-04-10 | The Esab Group, Inc. | Plasma arc torch |
US6207923B1 (en) | 1998-11-05 | 2001-03-27 | Hypertherm, Inc. | Plasma arc torch tip providing a substantially columnar shield flow |
US6320156B1 (en) * | 1999-05-10 | 2001-11-20 | Komatsu Ltd. | Plasma processing device, plasma torch and method for replacing components of same |
US6268583B1 (en) * | 1999-05-21 | 2001-07-31 | Komatsu Ltd. | Plasma torch of high cooling performance and components therefor |
US6191380B1 (en) * | 1999-06-16 | 2001-02-20 | Hughen Gerrard Thomas | Plasma arc torch head |
US6424082B1 (en) * | 2000-08-03 | 2002-07-23 | Hypertherm, Inc. | Apparatus and method of improved consumable alignment in material processing apparatus |
DE10144516B4 (de) * | 2001-09-10 | 2004-03-25 | Kjellberg Finsterwalde Elektroden Und Maschinen Gmbh | Plasmabrenner |
US6946617B2 (en) | 2003-04-11 | 2005-09-20 | Hypertherm, Inc. | Method and apparatus for alignment of components of a plasma arc torch |
-
2004
- 2004-10-08 DE DE102004049445.2A patent/DE102004049445C5/de not_active Expired - Fee Related
- 2004-10-08 DE DE202004021663U patent/DE202004021663U1/de not_active Expired - Lifetime
- 2004-10-08 DE DE102004064160.9A patent/DE102004064160C5/de not_active Expired - Fee Related
-
2005
- 2005-09-28 PL PL05790759T patent/PL1797747T3/pl unknown
- 2005-09-28 ES ES05790759.4T patent/ES2641235T3/es active Active
- 2005-09-28 EP EP05790759.4A patent/EP1797747B1/de active Active
- 2005-09-28 WO PCT/DE2005/001714 patent/WO2006039890A2/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5317126A (en) | 1992-01-14 | 1994-05-31 | Hypertherm, Inc. | Nozzle and method of operation for a plasma arc torch |
Also Published As
Publication number | Publication date |
---|---|
DE102004049445B4 (de) | 2010-08-19 |
DE202004021663U1 (de) | 2010-05-12 |
PL1797747T3 (pl) | 2018-03-30 |
ES2641235T3 (es) | 2017-11-08 |
WO2006039890A2 (de) | 2006-04-20 |
DE102004064160B4 (de) | 2010-12-30 |
EP1797747B1 (de) | 2017-06-28 |
WO2006039890A3 (de) | 2007-02-08 |
DE102004049445C5 (de) | 2016-04-07 |
DE102004064160C5 (de) | 2016-03-03 |
DE102004049445A1 (de) | 2006-04-20 |
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