EP0794696B1 - Plasmabrenner für das Plasma-Schutzgas-Lichtbogenschweissen mit einer nicht abschmelzenden wassergekühlten Elektrode - Google Patents
Plasmabrenner für das Plasma-Schutzgas-Lichtbogenschweissen mit einer nicht abschmelzenden wassergekühlten Elektrode Download PDFInfo
- Publication number
- EP0794696B1 EP0794696B1 EP97101879A EP97101879A EP0794696B1 EP 0794696 B1 EP0794696 B1 EP 0794696B1 EP 97101879 A EP97101879 A EP 97101879A EP 97101879 A EP97101879 A EP 97101879A EP 0794696 B1 EP0794696 B1 EP 0794696B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- electrode
- plasma torch
- plasma
- bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/28—Cooling arrangements
-
- 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
- H05H1/341—Arrangements for providing coaxial protecting fluids
-
- 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
Definitions
- the invention relates to a plasma torch for the Plasma shielding gas arc welding with a non melting water-cooled electrode according to the generic term of the first claim.
- DE 42 34 267 A1 describes a plasma torch head for one Plasma welding and cutting torch described the Cooling a device for distribution and forwarding of flowing fluid media, with two Feed channels radially into the center of the rear part of the burner extend. An opening extends down to a continuous central hole in the electrode holder. This cools the plasma gas directed. Furthermore, this solution has a heat sink on, which is optionally cooled with water or secondary gas can be.
- Electrode An axial chamber in which there is a cooling tube is, which excretes dropwise water, which in the closed end of the electrode during operation Steam is converted. Through two cooling passages still compressed gas for cooling the electrode as well as the burner housing and the nozzle. Likewise a water-cooled electrode is described in DE 2927996 A1 shown. The electrode has a water-cooled one Housing and a water-cooled interior on, each with a separate water connection. The positive pole electrode should pass through the Water cooling a long service life even with currents ensure over 500 A.
- Plasma welding of aluminum is achieved through dense, high melting, firmly adhering oxide layers on the Workpiece surface obstructed (plasma welding of Aluminum with electrode on positive pole; DVS notification 64/1981, Knoch, R .; Welz, W.)
- a cooling pipe which surrounds the electrode and at its, from the Electrode tip distal end with an annulus in Connection is made with a radial breakthrough the coolant inlet is connected.
- a cooling chamber is arranged and the coolant is from the electrode via a flow hole to the cooling chamber out of which there is a coolant return reaches the return hole.
- the coolant will also not directly to the tip of the electrode, whereby only welding currents of 200A are possible are.
- the object of the invention is to provide a plasma torch for the Plasma shielding gas arc welding with a non to develop a melting water-cooled electrode which has a simple construction and a high thermal load due to the positive pole the electrode and uniformly high currents in the Range of 500A the resulting heat quantities as quickly and safely as possible from the electrode and the To discharge the plasma nozzle.
- the plasma torch for plasma shielding gas arc welding exhibits a non-melting water-cooled Electrode on the center of the plasma torch located.
- the nozzle is in an upper part and a Subdivided the lower part of the nozzle, between which the electrical Separation an insulating spacer arranged is.
- On the lower part of the nozzle there is a protective gas nozzle with a High-frequency connection, preferably axially displaceable attached.
- the Coolant is drained through a radial bore Coolant supply to a cavity in the electrode led into which a cooling pipe opens.
- the coolant flows past the tip of the electrode, cools it down and passes through the ring Cooling channel between the outer diameter of the cooling tube and inner diameter of the electrode is formed in a cavity through which the cooling pipe extends.
- the coolant flow is made via a cavity Flow hole in the area of the lower part of the nozzle led in which the highest temperature stress occurs.
- the coolant flows through the lower part of the nozzle an annular cooling chamber and from there via a Return hole for coolant return in the upper part of the nozzle.
- the cylindrical Electrode top has a cavity from the bottom from a central hole in the upper part of the electrode extends.
- the cooling pipe is in this hole attached to one end.
- this centric bore to the outside a radial bore for the supply of the coolant.
- In the cavity it will Lower electrode part fixed in such a way that an area of the cavity from which the Flow bore to the cooling chamber opens into the lower part of the nozzle.
- the pilot hole is in a radial area and divided an axial area.
- the axial area leads from the cavity through the upper part of the nozzle Isolating intermediate piece and the lower nozzle part in it Cooling chamber. Leading from the cavity in the upper electrode part the radial area over a breakthrough to one Chamber through the outer surface of the electrode top and through a recess in the upper part of the nozzle is formed up to the axial area.
- the lower part of the electrode is in the plasma gas space a gas distributor and centering ring made of electrical conductive or insulating material in the lower part of the nozzle centered. Is the gas distributor and centering ring made? electrically conductive material is also a Place the insulating sleeve in the lower part of the nozzle.
- the constriction nozzle is preferred for the plasma arc Separately designed and detachable in the lower part of the nozzle or permanently attached. To stabilize the plasma arc become circular around the central plasma hole the constriction nozzle around additional Holes arranged. These can be on the same or different circles. The number of Drilling can be varied as needed.
- the shielding gas nozzle is at the top of the nozzle pointing end with the inside diameter on the outside diameter of the lower part of the nozzle. Then will a distribution chamber between the outer surface of the Lower part of the nozzle and inner surface of the protective gas nozzle formed, in which the protective gas from its connection in The upper part of the nozzle flows over the corresponding holes.
- the Shielding gas nozzle preferably has annular ones Outlet holes for the distribution and outflow of the Shielding gas, in particular on a common Pitch circle and their number can be varied.
- the electrode tip advantageously consists of high-purity electrolytic copper.
- Can in the tip of the electrode an insert made of tungsten can also be arranged centrally.
- the plasma torch according to the invention for plasma shielding gas arc welding according to Fig. 1 one Power connector 1, a connector for the plasma gas supply line 2, a connection for the protective gas supply line 3 and a connection for the coolant inlet 4 and Coolant return 5 on. There is also a high-frequency connection 6 provided.
- a longitudinal section along the line B-B is shown in Fig. 2.
- the nozzle is in one Subdivided upper nozzle part 7 and a lower nozzle part 8, between which one for electrical isolation Insulating intermediate piece 9 is arranged.
- On the lower part of the nozzle 8 is a protective gas nozzle 10 with the high-frequency connection 6 preferably axially slidably attached.
- Downtown is the non-melting water-cooled electrode arranged, which consists of an upper electrode part 12 and a Lower electrode part 13 exists.
- the upper electrode part 12 and the lower electrode part 13 are detachable with one another connected. This allows the lower electrode part 13 to Wear can be easily replaced.
- a cooling tube 14 is attached, which in the Cavity of the lower electrode part 13 approximately to Electrode tip 15 is sufficient.
- Electrode tip 15 there is an insert 16 made of tungsten.
- the Coolant is from the coolant inlet 4 through a radial passage 17, which opens into an annular space 18, and a radial one adjacent to the annular space 18 Passage 19 in the upper electrode part 12 to one therein arranged centric axial bore 20 out.
- the cooling tube 14 is attached.
- the Cooling tube 14 reaches the cooling liquid up to Electrode tip 15, cools it and flows in Cooling channel 21 between the cooling tube 14 and the interior of the Lower electrode part 13 to a cavity 22 in Electrode upper part 12 and through an opening 23 the upper electrode part 12. Breakthrough 23 the coolant flow closes to an annular one Cooling chamber 24 in the lower nozzle part 8.
- the coolant flow consists of a radial bore 25 which towards an opening 22 in an annular space 26 expanded and an axial pilot hole V, which of the radial bore 25 in the nozzle upper part 7 through the Insulating intermediate piece 9 and lower nozzle part 8 in the therein located cooling chamber 24 leads.
- the coolant flows through the annular cooling chamber 24 and from this via a return bore R to Coolant return 5 in the upper part of the nozzle 7.
- a baffle plate S arranged to separate Forward and return is in the cooling chamber 24 between Flow bore V and return bore R .
- the lower electrode part 13 is in the plasma gas space P through a gas distributor and Centering ring 27 made of electrically conductive or insulating material centered in the lower part of the nozzle.
- electrically conductive material is also a Arrange insulating sleeve 28 in the lower nozzle part 8.
- the constriction nozzle 29 for the plasma arc preferably formed separately as shown and in Lower nozzle part 8 releasably or permanently attached. to Stabilization of the plasma arc become circular around the central plasma hole 30 of the constriction nozzle 29 arranged around additional bores 31 (s. also Fig. 6). These can be the same or different Partial circles lie.
- the number of holes 31 can be varied as required.
- the shielding gas nozzle 10 lies on the upper part 7 of the nozzle pointing end with the inside diameter on the outside diameter of the lower nozzle part 8. Then will a distribution chamber 32 between the outer surface of the Lower nozzle part 8 and inner surface of the protective gas nozzle 10 formed, in which the protective gas from its connection 3rd flows in the nozzle upper part 7 via corresponding bores.
- the protective gas nozzle 10 preferably has an annular shape arranged outlet holes 33 for distributing and Outflow of the protective gas, in particular on a common pitch circle and their number can be varied.
- the insulating intermediate piece 9 is over a screw connection, not shown, with the Nozzle upper part 7 connected. Is on the intermediate insulating piece 9 the lower nozzle part 8 by means of a union nut 34 attached.
- the upper electrode part 12 is detachable with the Electrode holder 35 connected to which the Power connector 1 is located.
- the plasma torch continues to point a mounting bracket 36 for attachment to one Equipment carrier on by an insulating sleeve 37th is electrically separated from the upper nozzle part 7.
- Fig. 3 the section C-C is gem.
- Fig. 1 shown.
- An axial bore L2 leads from the plasma gas connection 2 to Plasma gas space P between insulating sleeve 28 and cooling tube 13 and the return bore R leads to the coolant return 5.
- the lower part of the nozzle is with the union nut 34 Insulated intermediate piece 9 attached.
- the lower electrode part 13 is gem. Fig. 4 by a radially arranged clamping screw 38 releasably in the upper electrode part arranged.
- Fig. 5 shows the gas distributor and centering ring 27, the the lower electrode part 13 is centered. At the same time a distribution of the plasma gas through the bores 27a achieved.
- the constriction nozzle 29 (FIG. 6) is designed separately and has other holes in addition to the plasma holes bores 31 arranged in a ring thereon. It will preferably 3 to 6 holes 31 are provided.
- the constricting nozzle is used to constrict the positive pole arc. Due to the special construction, the Arc are given a specific shape. Consequently is achieved that between the arc and plasma nozzle 29th the emerging plasma gas to the plasma nozzle 29 a Temperature reduction causes. This will reduce the service life the nozzle increases.
- the bores 31 arranged in a ring serve as additional support for the plasma arc.
- Fig. 7 shows the top view of the lower nozzle part the preliminary bore has an essentially cylindrical part V, the return hole R and the hole L3 for the Supply of the protective gas.
- the holes V and R are separated from each other by a baffle plate S.
- Fig. 7 is shown in Fig. 8.
- the cooling chamber 24 is closed by a ring 11, which is preferably is attached by brazing.
- the insulating intermediate piece 9 is shown again in FIGS. 9, 10 and 11. It has through holes V, R, L1 and L2 on.
- the shielding gas nozzle 10 is shown in FIG. 12. At the top At the end, this has a bore 39. Through this hole 39 can the shielding gas nozzle with a clamping screw on Lower nozzle part 8 are axially slidably attached. On the threaded bore 40 becomes the high-frequency connection 6 appropriate. To ensure an even escape of the protective gas to ensure circular exit bores 33 introduced. Through these holes 33 can an annular protective gas curtain surrounds the plasma arc form. the whole welding process before protects the rest of the atmosphere. The adjustability of the Shielding gas nozzle 10 additionally increases the gas protection effect.
- the type of cooling system with only one cooling circuit and the cooling channel in the electrode, which is pulled far down as well as the cooling chamber in the area of the plasma nozzle ensure safe heat dissipation of the resulting high amounts of heat. So that the service life of the Constriction nozzle 29 and the lower electrode part 13 be significantly increased.
- the arcing is caused by a high frequency overlay (in the range of 5 kHz).
- the The arc is ignited between the tip of the electrode 15 and the constriction nozzle 29 (plasma nozzle). On this is the shortest distance between these two components.
- the high-frequency voltage connections are located on power connection 1 of the positive pole electrode (High frequency positive pole) and at the shielding gas nozzle 10 (high frequency mass).
- the spark ignited by it is by the previously switched on plasma shielding gas blown out.
- the welding voltage can thus be non-contact ignite.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma Technology (AREA)
- Arc Welding In General (AREA)
Description
- Fig. 1:
- Draufsicht des Plasmabrenners 1
- Fig. 2:
- Schnittdarstellung entlang der Linie B-B gem. Fig. 1
- Fig. 3:
- Schnittdarstellung entlang der Linie C-C gem. Fig. 1
- Fig. 4:
- Längsschnitt der Elektrode
- Fig. 5:
- Darstellung des Gasverteiler- und Zentrierringes
- Fig. 6:
- Längsschnitt der Einschnürungsdüse
- Fig. 7:
- Draufsicht des Düsenunterteils
- Fig. 8:
- Längsschnitt des Düsenunterteils
- Fig. 9:
- Draufsicht auf das Isolierzwischenstück
- Fig. 10:
- Längsschnitt durch das Isolierzwischenstück entlang der Linie A-A gem. Fig. 9
- Fig.11:
- Längsschnitt durch das Isolierzwischenstück entlang der Linie B-B gem. Fig. 9
- Fig. 12:
- Längsschnitt der Schutzgasdüse
- 1
- Stromanschluß
- 2
- Plasmagaszuleitung
- 3
- Schutzgaszuleitung
- 4
- Kühlmittelzulauf
- 5
- Kühlmittelrücklauf
- 6
- Hochfrequenzanschluß
- 7
- Düsenoberteil
- 8
- Düsenunterteil
- 9
- Isolierzwischenstück
- 10
- Schutzgasdüse
- 11
- Ring
- 12
- Elektrodenoberteil
- 13
- Elektrodenunterteil
- 14
- Kühlrohr
- 15
- Elektrodenspitze
- 16
- Einsatz
- 17
- radialer Durchlaß
- 18
- Ringraum
- 19
- radialer Durchlaß
- 20
- Bohrung
- 21
- Kühlkanal
- 22
- Hohlraum
- 23
- Durchbruch
- 24
- Kühlkammer
- 25
- Bohrung
- 26
- Ringraum
- 27
- Gasverteiler- und Zentrierring
- 28
- Isolierhülse
- 29
- Einschnürungsdüse
- 30
- Plasmalochbohrung
- 31
- Bohrungen
- 32
- Verteilungskammer
- 33
- Austrittsbohrungen
- 34
- Überwurfmutter
- 35
- Elektrodenhalter
- 36
- Befestigungsschelle 36
- 37
- Isolierhülse
- 38
- Schraube
- 39
- Bohrung
- 40
- Gewindebohrung
- P
- Plasmagasraum
- R
- Rücklaufbohrung
- S
- Stauscheibe
- V
- Vorlaufbohrung
Claims (12)
- Plasmabrenner für das Plasma-Schutzgas-Lichtbogen-Schweißen mit einer nicht abschmelzenden, wassergekühlten, aus einem Oberteil (12) und einem Unterteil (13) bestehenden Elektrode, die sich im Zentrum des Plasmabrenners befindet, wobei der Plasmabrenner aus einem Düsenoberteil (7) und einem Düsenunterteil (8) besteht, zwischen welchen zur elektrischen Trennung ein Isolierzwischenstück (9) angeordnet ist, sowie mit einer am Düsenunterteil (8) vorgesehenen ringförmigen Schutzgasdüse (10), einem Stromanschluss (1) für den Schweißstrom, einer Plasmagaszuleitung (2), einer Schutzgaszuleitung (3) sowie mit einem Kühlmittelzulauf (4) und einem Kühlmittelrücklauf (5), wobei zur Kühlung der Elektrode ein Kühlrohr (14) vorgesehen ist, das an seinem von der Elektrodenspitze (15) entfernten Ende mit einem Ringraum (18) in Verbindung steht, der über einen radialen Durchbruch (17) mit dem Kühlmittelzulauf (4) verbunden ist, und dass eine Vorlaufbohrung (V) in einem Kühlmittelkreislauf mit einer ringförmigen Kühlkammer (24) im Bereich des Düsenunterteils (8), verbunden ist und von der Kühlkammer (24) zum Kühlmittelrücklauf (5) eine Rücklaufbohrung (R) führt, dadurch gekennzeichnet,dass das Unterteil (13) der Elektrode als einseitig geschlossener, rotationssymmetrischer Hohlkörper ausgebildet ist, dessen geschlossenes Ende die Elektrodenspitze (15) bildet, wobei im Zentrum des Unterteils (13) der Elektrode das Kühlrohr (14) angeordnet ist, welches nicht bis an die Elektrodenspitze (15) heranreicht und dessen Außendurchmesser kleiner ist als der Innendurchmesser des Unterteils (13) der Elektrode, so dass ein ringförmiger Kühlkanal (21) gebildet wird,das Elektrodenoberteil (12) einen Hohlraum (22) aufweist, durch welchen das Kühlrohr (14) hindurchreicht und in den der Kühlkanal (21) mündet, wobei die Vorlaufbohrung (V) mit dem Hohlraum (22) in Verbindung steht unddass in der Kühlkammer (24) zwischen Vorlaufbohrung (V) und Rücklaufbohrung (R) eine Stauscheibe (S) zur Trennung von Vor- und Rücklauf angeordnet ist.
- Plasmabrenner nach Anspruch 1, dadurch gekennzeichnet, daß das Elektrodenunterteil (13) an dem Elektrodenoberteil (12) lösbar befestigt ist.
- Plasmabrenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß vom Grund des Hohlraumes (22) aus eine zentrische Bohrung (20) in das Elektrodenoberteil (12) hineinreicht, in welcher das Kühlrohr (14) mit einem Ende befestigt wird, daß von der zentrischen Bohrung (20) nach außen eine radiale Bohrung (17) für den Zulauf des Kühlmittels vorgesehen ist, daß in dem Hohlraum (22) das Elektrodenunterteil (13) derartig befestigt ist, daß ein Bereich des Hohlraumes (22) frei bleibt und daß vom Hohlraum (22) aus eine radiale Bohrung (23) die Verbindung zur Vorlaufbohrung (V) herstellt.
- Plasmabrenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Elektrodenunterteil im Plasmagasraum (P) durch einen Gasverteiler- und Zentrierring (27) aus elektrisch leitendem oder isolierendem Werkstoff im Düsenunterteil (8) zentriert ist.
- Plasmabrenner nach Anspruch 4, dadurch gekennzeichnet, daß bei Anwendung eines Gasverteiler- und Zentrierringes (27) aus elektrisch leitfähigem Werkstoff eine Isolierhülse (28) im Düsenunterteil (8) angeordnet ist.
- Plasmabrenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß eine Einschnürungsdüse (29) für den Plasmalichtbogen separat ausgebildet und im Düsenunterteil (8) lösbar oder unlösbar befestigt ist.
- Plasmabrenner nach Anspruch 6, dadurch gekennzeichnet, daß zur Stabilisierung des Plasmalichtbogens auf gleichen oder unterschiedlichen Teilkreisen um die zentrale Plasmalochbohrung (30) der Einschnürungsdüse (29) herum zusätzliche Bohrungen (31) angeordnet sind.
- Plasmabrenner nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Schutzgasdüse (10) an ihrem zum Düsenoberteil (7) weisenden Ende mit dem Innendurchmesser am Außendurchmesser des Düsenunterteils (8) anliegt, daß anschließend eine spaltartige Verteilungskammer (32) zwischen Düsenunterteil (8) und Schutzgasdüse (10) gebildet wird, in welche das Schutzgas von seinem Anschluss (3) im Düsenoberteil (7) über entsprechende Bohrungen (L3) strömt und daß die Schutzgasdüse (10) ringförmig angeordnete Austrittsbohrungen (33) für das Verteilen und Ausströmen des Schutzgases aufweist, die auf einem gemeinsamen Teilkreis liegen und deren Anzahl variiert werden kann.
- Plasmabrenner nach Anspruch 8, dadurch gekennzeichnet, daß die Schutzgasdüse (10) axial verschiebbar am Düsenunterteil (8) angeordnet ist.
- Plasmabrenner nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß an der Schutzgasdüse (10) ein Hochfrequenzanschluss (6) befestigt ist.
- Plasmabrenner nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Elektrodenspitze (15) aus hochreinem Elektrolytkupfer gefertigt ist.
- Plasmabrenner nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß in der Elektrodenspitze (15) ein Einsatz (16) aus Wolfram zentrisch angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19608554 | 1996-03-06 | ||
DE19608554A DE19608554C1 (de) | 1996-03-06 | 1996-03-06 | Plasmabrenner für das Plasma-Schutzgas-Lichtbogen-Schweißen mit einer nicht abschmelzenden, wassergekühlten Elektrode |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0794696A1 EP0794696A1 (de) | 1997-09-10 |
EP0794696B1 true EP0794696B1 (de) | 2004-07-21 |
Family
ID=7787320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97101879A Expired - Lifetime EP0794696B1 (de) | 1996-03-06 | 1997-02-06 | Plasmabrenner für das Plasma-Schutzgas-Lichtbogenschweissen mit einer nicht abschmelzenden wassergekühlten Elektrode |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0794696B1 (de) |
AT (1) | ATE271750T1 (de) |
DE (1) | DE19608554C1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015001456A1 (de) | 2014-07-15 | 2016-01-21 | Linde Aktiengesellschaft | Verfahren zum Wolfram-Schutzgasschweißen |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19842074B4 (de) * | 1998-09-15 | 2004-06-03 | Castolin S.A. | Anode für Plasmaauftragsbrenner |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3569661A (en) * | 1969-06-09 | 1971-03-09 | Air Prod & Chem | Method and apparatus for establishing a cathode stabilized (collimated) plasma arc |
FR2275270A1 (fr) * | 1974-06-21 | 1976-01-16 | Inst Elektrosvarochnogo Oborud | Dispositif pour le travail de materiaux conducteurs au plasma et procede d'utilisation dudit dispositif |
DE2900330A1 (de) * | 1978-01-09 | 1979-07-12 | Inst Elektroswarki Patona | Verfahren zur plasmaerzeugung in einem plasma-lichtbogen-generator und vorrichtung zur durchfuehrung des verfahrens |
SE447076B (sv) * | 1978-07-11 | 1986-10-27 | Gpnii Nikel Kobalt Olov Promy | Ickesmeltande ljusbagselektrod |
US5247152A (en) * | 1991-02-25 | 1993-09-21 | Blankenship George D | Plasma torch with improved cooling |
DE4234267A1 (de) * | 1991-10-14 | 1993-04-15 | Binzel Alexander Gmbh Co Kg | Plasmabrennerkopf fuer einen plasmaschweiss- und schneidbrenner |
-
1996
- 1996-03-06 DE DE19608554A patent/DE19608554C1/de not_active Expired - Fee Related
-
1997
- 1997-02-06 AT AT97101879T patent/ATE271750T1/de not_active IP Right Cessation
- 1997-02-06 EP EP97101879A patent/EP0794696B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015001456A1 (de) | 2014-07-15 | 2016-01-21 | Linde Aktiengesellschaft | Verfahren zum Wolfram-Schutzgasschweißen |
DE102015001455A1 (de) | 2014-07-15 | 2016-01-21 | Linde Aktiengesellschaft | Elektrode für einen Schweißbrenner zum Wolfram-Schutzgasschweißen und Schweißbrenner mit solcher Elektrode |
Also Published As
Publication number | Publication date |
---|---|
DE19608554C1 (de) | 1997-07-17 |
EP0794696A1 (de) | 1997-09-10 |
ATE271750T1 (de) | 2004-08-15 |
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