EP0908264A1 - Apparatus for hardening the internal contour of a gun barrel with laser beam - Google Patents
Apparatus for hardening the internal contour of a gun barrel with laser beam Download PDFInfo
- Publication number
- EP0908264A1 EP0908264A1 EP98116447A EP98116447A EP0908264A1 EP 0908264 A1 EP0908264 A1 EP 0908264A1 EP 98116447 A EP98116447 A EP 98116447A EP 98116447 A EP98116447 A EP 98116447A EP 0908264 A1 EP0908264 A1 EP 0908264A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laser
- weapon barrel
- laser head
- barrel
- beam deflecting
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/10—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes shotgun barrels
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/12—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes barrels for ordnance
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
Definitions
- the invention relates to a device for hardening the inner contour a weapon barrel with laser radiation according to the generic term of claim 1.
- a disadvantage of this known laser arrangement is that the use of the CO 2 laser requires a relatively rigid beam guidance system, so that the processing space is limited. In addition, it cannot be inferred from this document how the relative movement required between the weapon barrel and the laser head could be realized.
- the present invention has for its object a Device for the transformation hardening of the inner contour of a weapon barrel specify with which the gun barrel very accurately and can be cured homogeneously and with their intended use Use an enlargement of the machining space is.
- the invention is based on the idea of using an ND: YAG laser as the laser, since glass fibers can be used for the transmission of the laser beam due to the shorter wavelength of 1.06 ⁇ m compared to CO 2 lasers.
- ND: YAG laser As the laser, since glass fibers can be used for the transmission of the laser beam due to the shorter wavelength of 1.06 ⁇ m compared to CO 2 lasers.
- the laser head by attaching the laser head to a pull rod that can be centered in the weapon barrel (and thus supported on the barrel walls) and displaceable in the direction of the core axis of the weapon barrel, the focus position of the laser beam is maintained very precisely during the hardening process.
- FIG. 1 shows the side view of a curing gun barrel in connection with a laser system and a program-controlled groove drawing machine.
- 1 denotes the weapon barrel, which is on the groove drawing machine 2 is aligned and fixed.
- the Pull rod 3 of the groove pulling machine extends within of the gun barrel 1 along the soul axis 4 and supports on the inner surface 5 of the barrel 1 over two Guide bushings 6 and 7.
- a laser head 10 is arranged at the end 9 of the pull rod 3, which via an optical fiber 11 with an Nd: YAG laser 12 (e.g. with 2 kW output power).
- the laser head 10 is via a first hose line 13 with a cooling device 14 and a second Hose line 15 with a protective gas source 16 (e.g. with Argon-filled gas bottle).
- the laser head 10 essentially comprises a facet mirror 17, the laser beam coming from the optical fiber 11 on the inner surface 5 of the weapon barrel 1 to be hardened focused, and that due to the occurring in operation enormous heat generation by a coolant, which over the hose line 13 is supplied, can be cooled.
- the laser head 10 is also with a second tube or Hose line 15 connected via a protective gas during transformation hardening on the heated surface of the barrel flows and a deteriorating surface quality Prevents oxide layer formation.
- both drawn gun barrels as well as gun barrels with a smooth barrel profile transformation hardening are drawn gun barrels as well as gun barrels with a smooth barrel profile transformation hardening.
- steel pipes go down to a depth of 0.4 to 0.8 mm let transformation hardening, the hardened surface areas had between 600 and 750 HV.
- the invention comprises Device an electronic control device 18 with which the laser power is regulated and which one on the laser 12 downstream closure unit 19 acts and the correct operation of the laser system constantly monitored such that in the event of a defect, e.g. at a fiber break in the optical fiber or an interrupted one or insufficient cooling of the facet mirror etc., the The gun barrel interrupts the hardening process.
- a defect e.g. at a fiber break in the optical fiber or an interrupted one or insufficient cooling of the facet mirror etc.
- control device 18 is preferred connected to the control device 21 for the groove drawing machine.
- this makes the flexible design of Machining cycles and on the other hand the monitoring of safety-related interlocks guaranteed.
- a third pipe or hose line is provided be through the compressed air or nitrogen across the jet outlet of the laser head is passed through this directed gas flow, the mirror optics and the interior protect the laser head from dirt.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laser Beam Processing (AREA)
- Heat Treatment Of Articles (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Die Erfindung betrifft eine Vorrichtung zum Härten der Innenkontur eines Waffenrohres (1) mit Laserstrahlung, wobei die Vorrichtung einen Laser (12) und einen entlang der Seelenachse (4) des Waffenrohres (1) verschiebbar anordbaren und eine Strahlumlenkoptik (17) enthaltenden Laserkopf (10) umfaßt, so daß die Laserstrahlung mündungsseitig in das Waffenrohr (1) einkoppelbar und mittels der Strahlumlenkoptik (17) senkrecht auf die innere Oberfläche (5) des Waffenrohres (1) führbar ist. Um zu erreichen, daß das Waffenrohr (1) sehr genau und homogen gehärtet werden kann und ein gegenüber bekannten Vorrichtungen relativ großer Bearbeitungsraum zur Verfügung steht, schlägt die Erfindung vor, einerseits als Laser (12) einen ND:YAG-Laser zu verwenden, da durch die gegenüber CO2-Lasern geringere Wellenlänge Glasfasern für die Übertragung des Laserstrahles eingesetzt werden können, und andererseits den Laserkopf (10) an einer in dem Waffenrohr (1) zentrierbaren und in Richtung der Seelenachse (4) des Waffenrohres (1) verschiebbaren Ziehstange (3) zu befestigen. <IMAGE>The invention relates to a device for hardening the inner contour of a weapon barrel (1) with laser radiation, the device comprising a laser (12) and a laser head (10) which can be displaced along the core axis (4) of the weapon barrel (1) and which contains a beam deflecting lens (17) ) includes so that the laser radiation can be coupled into the weapon barrel (1) on the muzzle side and can be guided vertically onto the inner surface (5) of the weapon barrel (1) by means of the beam deflecting optics (17). In order to ensure that the weapon barrel (1) can be hardened very precisely and homogeneously and that a processing space that is relatively large compared to known devices is available, the invention proposes on the one hand to use an ND: YAG laser as the laser (12), because Due to the shorter wavelength compared to CO2 lasers, glass fibers can be used for the transmission of the laser beam, and on the other hand the laser head (10) on a pull rod (1) that can be centered in the weapon barrel (1) and displaceable in the direction of the core axis (4) of the weapon barrel (1) 3) to attach. <IMAGE>
Description
Die Erfindung betrifft eine Vorrichtung zum Härten der Innenkontur eines Waffenrohres mit Laserstrahlung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for hardening the inner contour a weapon barrel with laser radiation according to the generic term of claim 1.
Um die durch die heißen Treibladungsgase verursachte Erosion des jeweiligen Waffenrohres bzw. den durch die Reibung zwischen der Geschosse und dem Waffenrohr verursachten abrasiven Verschleiß gering zu halten und damit deren Lebensdauer zu erhöhen, ist es bekannt, die innere Oberfläche des in der Regel aus Stahl bestehenden Waffenrohres mit einer Hartmetallschicht, z.B. einer Chromschicht oder einer Chrom enthaltenden Legierungsschicht (z.B. einer Kobalt-Chrom-Wolfram-Legierung), zu versehen.The erosion caused by the hot propellant gases of the respective gun barrel or that due to the friction between the projectiles and the gun barrel caused abrasive To keep wear low and thus increase their lifespan increase, it is known to increase the inner surface of the in the Rule consisting of steel gun barrel with a hard metal layer, e.g. a chromium layer or a chromium-containing one Alloy layer (e.g. a cobalt-chromium-tungsten alloy), to provide.
Nachteilig ist bei derartigen Waffenrohren, daß die Aufbringung der Auftragsschicht prozeßtechnisch relativ aufwendig ist und häufig Abplatzungen und Auswaschungen dieser Schicht auftreten, welche die Lebensdauer der Waffenrohre vermindern. The disadvantage of such gun barrels is that the application the application layer is relatively complex in terms of process technology is and often flaking and erosion of this Layer occur which affects the life of the gun barrels Reduce.
Aus der DE 195 44 824 A1 ist es ferner bekannt, die innere Oberfläche des jeweiligen Waffenrohres durch eine thermische Oberflächenbehandlung mittels Laserstrahlen zu härten (Umwandlungshärten). Dabei wird die Laserstrahlung eines CO2-Lasers mündungsseitig axial in das Waffenrohr eingekoppelt und mit Hilfe eines in dem Waffenrohr verschiebbar angeordneten, eine Strahlenumlenkoptik enthaltenden Laserkopfes senkrecht auf die zu härtende Innenflächen des Waffenrohres geleitet.From DE 195 44 824 A1 it is also known to harden the inner surface of the respective weapon barrel by thermal surface treatment by means of laser beams (transformation hardening). The laser radiation of a CO 2 laser is coupled axially into the weapon barrel on the muzzle side and directed vertically onto the inner surfaces of the weapon barrel to be hardened with the aid of a laser head which is displaceably arranged in the weapon barrel and contains a beam deflecting optics.
Nachteilig ist bei dieser bekannten Laseranordnung, daß die Verwendung des CO2-Lasers ein relativ starres Strahlführungssystem erforderlich macht, so daß der Bearbeitungsraum eingegrenzt ist. Außerdem läßt sich dieser Schrift nicht entnehmen, auf welche Weise die zwischen Waffenrohr und Laserkopf erforderliche Relativbewegung realisiert werden könnte.A disadvantage of this known laser arrangement is that the use of the CO 2 laser requires a relatively rigid beam guidance system, so that the processing space is limited. In addition, it cannot be inferred from this document how the relative movement required between the weapon barrel and the laser head could be realized.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Umwandlungshärten der Innenkontur eines Waffenrohres anzugeben, mit der das Waffenrohr sehr genau und homogen gehärtet werden kann und mit deren bestimmungsgemäßer Verwendung eine Vergrößerung des Bearbeitungsraumes verbunden ist.The present invention has for its object a Device for the transformation hardening of the inner contour of a weapon barrel specify with which the gun barrel very accurately and can be cured homogeneously and with their intended use Use an enlargement of the machining space is.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung offenbaren die Unteransprüche.This object is solved by the features of claim 1. Disclose further advantageous refinements of the invention the subclaims.
Im wesentlichen liegt der Erfindung der Gedanke zugrunde, einerseits als Laser einen ND:YAG-Laser zu verwenden, da durch die gegenüber CO2-Lasern geringere Wellenlänge von 1,06 µm Glasfasern für die Übertragung des Laserstrahles eingesetzt werden können. Andererseits wird durch die Befestigung des Laserkopfes an einer in dem Waffenrohr zentrierbaren (und damit an den Rohrwänden abstützbaren) und in Richtung der Seelenachse des Waffenrohres verschiebbaren Ziehstange die Fokuslage des Laserstrahles bei dem Härtungsvorgang sehr genau eingehalten.Essentially, the invention is based on the idea of using an ND: YAG laser as the laser, since glass fibers can be used for the transmission of the laser beam due to the shorter wavelength of 1.06 μm compared to CO 2 lasers. On the other hand, by attaching the laser head to a pull rod that can be centered in the weapon barrel (and thus supported on the barrel walls) and displaceable in the direction of the core axis of the weapon barrel, the focus position of the laser beam is maintained very precisely during the hardening process.
Dabei hat es sich als besonders vorteilhaft erwiesen, wenn es sich bei der Ziehstange um die Ziehstange einer programmgesteuerten Nutenziehmaschine handelt, bei der die Ziehstange sehr genau auf einer definierten Bahn über einen Maschinenschlitten programmgesteuert durch das Waffenrohr gezogen werden kann. Die relative Fokuslage des Laserstrahles bleibt durch die mitgeführten Buchsen im Rohr immer konstant.It has proven to be particularly advantageous if it the pull rod around the pull rod of a program-controlled Grooving machine deals with the pull rod very precisely on a defined path over a machine slide be pulled programmatically through the gun barrel can. The relative focus position of the laser beam remains always constant due to the bushings in the pipe.
Da der Absorptionsgrad der Laserstrahlen eines ND:YAG-Laser etwa 30 - 35% höher ist als derjenige eines CO2-Lasers, sind bei Verwendung eines ND:YAG-Lasers keine absorptionserhöhenden Coatingmittel erforderlich, so daß sich gegenüber einem CO2-Laser homogenere Härteschichten ergeben.Since the degree of absorption of the laser beams of an ND: YAG laser is approximately 30-35% higher than that of a CO 2 laser, no absorption-increasing coating agents are required when using an ND: YAG laser, so that they are more homogeneous compared to a CO 2 laser Hard layers result.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden anhand einer Figur erläuterten Ausführungsbeispiel. Dabei zeigt die Figur die Seitenansicht eines zu härtenden Waffenrohres in Verbindung mit einer Laseranlage und einer programmgesteuerten Nutenziehmaschine.Further details and advantages of the invention emerge from the following exemplary embodiment explained with reference to a figure. The figure shows the side view of a curing gun barrel in connection with a laser system and a program-controlled groove drawing machine.
In der Fig. ist mit 1 das Waffenrohr bezeichnet, welches auf
der Nutenziehmaschine 2 ausgerichtet und fixiert ist. Die
Ziehstange 3 der Nutenziehmaschine erstreckt sich innerhalb
des Waffenrohres 1 entlang deren Seelenachse 4 und stützt
sich an der inneren Oberfläche 5 des Waffenrohres 1 über zwei
Führungsbuchsen 6 und 7 ab.In the figure, 1 denotes the weapon barrel, which is on
the
An dem dem mündungsseitigen Ende 8 des Waffenrohres 1 zugewandten
Ende 9 der Ziehstange 3 ist ein Laserkopf 10 angeordnet,
welcher über eine Lichtleitfaser 11 mit einem Nd:YAG-Laser
12 (z.B. mit 2 kW Ausgangsleistung) verbunden ist.
Außerdem ist der Laserkopf 10 über eine erste Schlauchleitung
13 mit einer Kühlvorrichtung 14 und über eine zweite
Schlauchleitung 15 mit einer Schutzgasquelle 16 (z.B. mit
Argon gefüllte Gasflasche) verbunden.At the
Der Laserkopf 10 umfaßt im wesentlichen einen Facettenspiegel
17, der den von der Lichtleitfaser 11 kommenden Laserstrahl
auf die zu härtende innere Oberfläche 5 des Waffenrohres 1
fokussiert, und der aufgrund der im Betrieb auftretenden
enormen Wärmeentwicklung durch ein Kühlmittel, welches über
die Schlauchleitung 13 zugeführt wird, gekühlt werden kann.
Der Laserkopf 10 ist ferner mit einer zweiten Rohr- oder
Schlauchleitung 15 verbunden, über die ein Schutzgas beim Umwandlungshärten
auf die erhitzte Oberfläche des Waffenrohres
strömt und eine die Oberflächenqualität verschlechternde
Oxidschichtbildung verhindert.The
Mit der erfindungsgemäßen Vorrichtung lassen sich sowohl gezogene Waffenrohre als auch Waffenrohre mit einem Glattrohrprofil umwandlungshärten. Dabei haben Versuche ergeben, daß sich Stahlrohre bis in eine Tiefe von 0,4 bis 0,8 mm umwandlungshärten lassen, wobei die gehärteten Oberflächenbereiche zwischen 600 und 750 HV aufwiesen.With the device according to the invention, both drawn gun barrels as well as gun barrels with a smooth barrel profile transformation hardening. Experiments have shown that steel pipes go down to a depth of 0.4 to 0.8 mm let transformation hardening, the hardened surface areas had between 600 and 750 HV.
Wie der Fig. zu entnehmen ist, umfaßt die erfindungsgemäße
Vorrichtung eine elektronische Steuervorrichtung 18, mit der
die Laserleistung geregelt wird und welche auf eine dem Laser
12 ausgangsseitig nachgeschaltete Verschlußeinheit 19 wirkt
und den ordnungsgemäßen Betrieb der Laseranlage ständig
überwacht, derart, daß im Falle eines Defektes, z.B. bei
einem Faserbruch der Lichtleitfaser oder einer unterbrochenen
oder zu geringen Kühlung des Facettenspiegels etc., den
Härtungsvorgang des Waffenrohres unterbricht.As can be seen from the figure, the invention comprises
Device an
Wie in der Fig. durch die gestrichelte Linie 20 angedeutet
ist, wird die elektronische Steuervorrichtung 18 vorzugsweise
mit der Steuervorrichtung 21 für die Nutenziehmaschine verbunden.
Dadurch wird einerseits die flexible Gestaltung von
Bearbeitungszyklen und andererseits die Überwachung von
sicherheitstechnischen Verriegelungen gewährleistet.As indicated in the figure by the
Die Erfindung ist selbstverständlich nicht auf das vorstehend
beschriebene Ausführungsbeispiel beschränkt. So kann beispielsweise
zusätzlich zu den Rohr- oder Schlauchleitungen 13
und 15 eine dritte Rohr- oder Schlauchleitung vorgesehen
sein, durch die Druckluft oder Stickstoff quer zur Strahlaustrittsöffnung
des Laserkopfes geführt wird, um durch
diesen gerichteten Gasstrom die Spiegeloptik und den Innenraum
des Laserkopfes vor Verschmutzungen zu schützen. The invention is of course not based on the above
described embodiment limited. For example
in addition to the pipe or
- 11
- WaffenrohrGun barrel
- 22nd
- NutenziehmaschineGrooving machine
- 33rd
- ZiehstangePull rod
- 44th
- SeelenachseSoul axis
- 55
- Oberflächesurface
- 6,76.7
- FührungsbuchsenGuide bushings
- 88th
- mündungsseitige Endemouth end
- 99
- Ende (Ziehstange)End (pull rod)
- 1010th
- LaserkopfLaser head
- 1111
- LichtleitfaserOptical fiber
- 1212th
- Laserlaser
- 1313
- erste Schlauchleitungfirst hose line
- 1414
- KühlvorrichtungCooler
- 1515
- zweite Schlauchleitungsecond hose line
- 1616
- SchutzgasquelleShielding gas source
- 1717th
- Facettenspiegel, StrahlumlenkoptikFaceted mirror, beam deflection optics
- 1818th
- elektronische Steuervorrichtungelectronic control device
- 1919th
- VerschlußeinheitLocking unit
- 2020th
- gestrichelte Liniedashed line
- 2121
- Steuervorrichtung (Nutenziehmaschine)Control device (groove drawing machine)
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19741028A DE19741028C1 (en) | 1997-09-18 | 1997-09-18 | Apparatus for hardening inner contour of weapon barrel by laser radiation |
| DE19741028 | 1997-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0908264A1 true EP0908264A1 (en) | 1999-04-14 |
| EP0908264B1 EP0908264B1 (en) | 2001-11-21 |
Family
ID=7842721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98116447A Expired - Lifetime EP0908264B1 (en) | 1997-09-18 | 1998-08-31 | Apparatus for hardening the internal contour of a gun barrel with laser beam |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6040551A (en) |
| EP (1) | EP0908264B1 (en) |
| DE (2) | DE19741028C1 (en) |
| ES (1) | ES2166124T3 (en) |
| TR (1) | TR199801848A2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19853293A1 (en) * | 1998-11-19 | 2000-05-25 | Rheinmetall W & M Gmbh | Method for producing a gun barrel provided on the inside with a hard chrome layer |
| DE19919688A1 (en) | 1999-04-30 | 2000-11-02 | Rheinmetall W & M Gmbh | Process for coating the inside of a gun barrel |
| DE10122663C1 (en) * | 2001-05-10 | 2002-08-01 | Heckler & Koch Gmbh | Method for finishing a locking surface of a self-loading handgun and locking surface obtained thereby |
| DE10260345B3 (en) * | 2002-12-20 | 2004-09-09 | Siemens Ag | Device and method for machining an inner wall of a recess made in a workpiece |
| DE10328450A1 (en) * | 2003-06-25 | 2005-01-20 | Rheinmetall W & M Gmbh | Method for eliminating coating and / or erosion damage |
| US20050279741A1 (en) * | 2004-06-17 | 2005-12-22 | Arenberg Jonathan W | Laser burn through sensor |
| DE102005043924B3 (en) * | 2005-09-14 | 2007-04-05 | Heckler & Koch Gmbh | Reflector arrangement and method for hardening inner surfaces |
| US7897265B2 (en) * | 2006-01-26 | 2011-03-01 | Hamilton Sundstrand Corporation | Low cost, environmentally favorable, chromium plate replacement coating for improved wear performance |
| DE112008000694A5 (en) * | 2007-01-19 | 2009-12-31 | Beru Ag | Device for generating a temperature gradient |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0364366A2 (en) * | 1988-10-14 | 1990-04-18 | Framatome | Procedure and device for the welding out of a distance within a pipe, especially within a steam generator of a nuclear power station |
| EP0406043A1 (en) * | 1989-06-28 | 1991-01-02 | Framatome | Tool bit working inside a tubular element |
| EP0408405A1 (en) * | 1989-06-28 | 1991-01-16 | Framatome | Device for laser welding inside a tubular element |
| DE4241592C1 (en) * | 1992-12-10 | 1993-11-04 | Daimler Benz Ag | ARRANGEMENT FOR CHANGING THE GEOMETRICAL DESIGN OF A LIGHT BUNCH WITH MIRRORS |
| DE19544824A1 (en) * | 1995-08-23 | 1997-02-27 | Rheinmetall Ind Ag | Drawn gun barrel and method of making such a barrel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE364366C (en) * | 1914-02-19 | 1923-03-21 | Robert Kiesswetter | Spade for tillage machines |
| DE406043C (en) * | 1921-08-27 | 1924-11-13 | Klaere Stinnes Geb Wagenknecht | Process for tanning animal skins |
| US3772496A (en) * | 1971-10-26 | 1973-11-13 | Western Electric Co | Methods of forming a conductive path using an oxygen plasma to reduce reflectivity prior to laser machining |
| US5160556A (en) * | 1990-08-22 | 1992-11-03 | United Container Machinery Group, Inc. | Method of hardening corrugating rolls |
| US5262613A (en) * | 1991-09-24 | 1993-11-16 | General Laser, Inc. | Laser retrofit for mechanical engravers |
| JP3214074B2 (en) * | 1992-07-15 | 2001-10-02 | 石川島播磨重工業株式会社 | Laser irradiation torch |
| US5719373A (en) * | 1996-11-18 | 1998-02-17 | Ingersoll-Rand Company | Laser device for heating a surface formed by a small diameter bore in a workpiece |
-
1997
- 1997-09-18 DE DE19741028A patent/DE19741028C1/en not_active Expired - Fee Related
-
1998
- 1998-08-31 EP EP98116447A patent/EP0908264B1/en not_active Expired - Lifetime
- 1998-08-31 DE DE59802695T patent/DE59802695D1/en not_active Expired - Fee Related
- 1998-08-31 ES ES98116447T patent/ES2166124T3/en not_active Expired - Lifetime
- 1998-09-17 TR TR1998/01848A patent/TR199801848A2/en unknown
- 1998-09-18 US US09/156,501 patent/US6040551A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0364366A2 (en) * | 1988-10-14 | 1990-04-18 | Framatome | Procedure and device for the welding out of a distance within a pipe, especially within a steam generator of a nuclear power station |
| EP0406043A1 (en) * | 1989-06-28 | 1991-01-02 | Framatome | Tool bit working inside a tubular element |
| EP0408405A1 (en) * | 1989-06-28 | 1991-01-16 | Framatome | Device for laser welding inside a tubular element |
| DE4241592C1 (en) * | 1992-12-10 | 1993-11-04 | Daimler Benz Ag | ARRANGEMENT FOR CHANGING THE GEOMETRICAL DESIGN OF A LIGHT BUNCH WITH MIRRORS |
| DE19544824A1 (en) * | 1995-08-23 | 1997-02-27 | Rheinmetall Ind Ag | Drawn gun barrel and method of making such a barrel |
Also Published As
| Publication number | Publication date |
|---|---|
| US6040551A (en) | 2000-03-21 |
| DE59802695D1 (en) | 2002-02-21 |
| EP0908264B1 (en) | 2001-11-21 |
| ES2166124T3 (en) | 2002-04-01 |
| TR199801848A3 (en) | 1999-04-21 |
| DE19741028C1 (en) | 1998-11-05 |
| TR199801848A2 (en) | 1999-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69316148T2 (en) | Method and device for welding a material with a laser beam | |
| DE60220343T2 (en) | Welding device with a miniaturized laser beam | |
| EP2429755B1 (en) | Device and method for machining the circumference of a material strand by means of a laser | |
| DE19607327A1 (en) | Laser beam machines | |
| EP0543830B1 (en) | Device and process for laser-welding pipes | |
| DE19518263A1 (en) | Appts. for material processing by means of a laser beam | |
| EP3755491B1 (en) | Laser processing head for laser metal deposition using a wire | |
| EP1048920A2 (en) | Method for coating the interior surface of a gun barrel | |
| EP0458180B1 (en) | Process and device for laser beam cutting | |
| DE102014102955A1 (en) | Laser beam machine for the thermal processing of workpieces | |
| EP0908264B1 (en) | Apparatus for hardening the internal contour of a gun barrel with laser beam | |
| DE202018107281U1 (en) | Beam forming unit with cooling system for high power laser | |
| EP1247878B1 (en) | Apparatus for powder coating by laser | |
| DE102023102044A1 (en) | Process for coating metallic workpieces | |
| DE69004412T2 (en) | Laser working process within a tube and working head to carry out the process. | |
| DD297586A5 (en) | DEVICE AND METHOD FOR WELDING METAL PARTS BY MEANS OF A LASER BEAM | |
| EP0543829B1 (en) | Device and process for laser-welding a pipe | |
| DE4413158C2 (en) | Device for the extensive and environmentally friendly removal of a layer of lacquer or plastic, for example polytetrafluoroethylene | |
| DE4413218C2 (en) | Device for the extensive and environmentally friendly removal of a layer of lacquer or plastic, for example polytetrafluoroethylene | |
| DE102022112050A1 (en) | Nozzle for laser processing with high focus positions | |
| DE102021103603B4 (en) | Method of processing an optical fiber, optical fiber and coupling arrangement | |
| DE102025122919A1 (en) | Device and method for laser beam welding | |
| EP0471179A1 (en) | Process for deburring metal workpiece edges | |
| DE102009018915A1 (en) | Multi-beam laser processing head to process laser material, comprises beam divider, focusing device, and material feeding device formed as wire-/powder feeder, where the head is designed to divide input laser beam into initial laser beams | |
| DE102024114299A1 (en) | Laser cutting head, cross-blowing nozzle and piercing method |
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: 19990114 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE ES FR GB IT LI SE |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17Q | First examination report despatched |
Effective date: 19990827 |
|
| AKX | Designation fees paid |
Free format text: CH DE ES FR GB IT LI SE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| ITF | It: translation for a ep patent filed | ||
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE ES FR GB IT LI SE |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE Ref country code: CH Ref legal event code: EP |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| ET | Fr: translation filed | ||
| REF | Corresponds to: |
Ref document number: 59802695 Country of ref document: DE Date of ref document: 20020221 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020208 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2166124 Country of ref document: ES Kind code of ref document: T3 |
|
| 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 | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20030805 Year of fee payment: 6 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050301 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: RHEINMETALL W & M GMBH Free format text: RHEINMETALL W & M GMBH#HEINRICH-EHRHARDT-STRASSE 2#29345 UNTERLUESS (DE) -TRANSFER TO- RHEINMETALL W & M GMBH#HEINRICH-EHRHARDT-STRASSE 2#29345 UNTERLUESS (DE) |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20150819 Year of fee payment: 18 Ref country code: ES Payment date: 20150827 Year of fee payment: 18 Ref country code: CH Payment date: 20150819 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20150820 Year of fee payment: 18 Ref country code: SE Payment date: 20150819 Year of fee payment: 18 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20150824 Year of fee payment: 18 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20160831 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160901 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20170428 |
|
| 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: 20160831 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160831 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20181116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20160901 |