EP1796875B1 - Focussing nozzle - Google Patents

Focussing nozzle Download PDF

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Publication number
EP1796875B1
EP1796875B1 EP05769987A EP05769987A EP1796875B1 EP 1796875 B1 EP1796875 B1 EP 1796875B1 EP 05769987 A EP05769987 A EP 05769987A EP 05769987 A EP05769987 A EP 05769987A EP 1796875 B1 EP1796875 B1 EP 1796875B1
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EP
European Patent Office
Prior art keywords
focusing
coating
nozzle
layer
hard material
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Not-in-force
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EP05769987A
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German (de)
French (fr)
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EP1796875A1 (en
Inventor
Rolf KÖSTERS
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Ceratizit Austria GmbH
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Ceratizit Austria GmbH
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Priority to PL05769987T priority Critical patent/PL1796875T3/en
Publication of EP1796875A1 publication Critical patent/EP1796875A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor

Definitions

  • the invention relates to a sierdüse for Abrasivementstrahlde consisting of a nozzle body made of hard metal which is penetrated by a bore for focusing the cutting beam and wherein at least the bore wall is provided with a single or multi-layer hard material coating.
  • Such focussing nozzles are part of cutting heads for Abrasivwasserstrahltre in which the cutting water jet and used for cutting abrasive such as corundum or sand are mixed in a mixing chamber to increase the cutting action of the cutting water jet.
  • the focusing nozzles serve to accelerate and center the water jet and the simultaneously supplied abrasive.
  • the focusing nozzles on the inlet side are usually funnel-shaped widened, the adjoining, the focusing nozzle passing through hole has a diameter in the range of about 0.2 to 1.5 mm.
  • the focussing nozzles are subject to very heavy wear.
  • WO 98/15386 describes the WO 98/15386 a focusing nozzle which is provided on the inner wall with a wear-resistant diamond-like layer of amorphous carbon (DLC).
  • the layer is applied by means of a laser ARC coating method, wherein a highly activated plasma has to be produced in vacuum by means of a pulsed, arc discharge between a source of the coating material and the nozzle to be coated.
  • the surface to be coated must be freely accessible, so that one has to divide the focusing nozzle for coating the bore wall into several segments and these segments must again close together after coating, which is associated with considerable effort.
  • the object of the present invention is therefore to provide the inner wall of a focusing nozzle made of hard metal with a coating which is sufficiently resistant to wear and at the same time can be easily applied without complicated segmentation of the nozzle.
  • the hard material coating has a layer with titanium nitride content at least on the free surface. It was not to be expected that the use of such a coating as a hard material layer would result in a significant improvement in the wear resistance of focusing nozzles, since the hardnesses of the titanium nitride layer on the surface are hardly higher than the hardness of the carbide base material used and are significantly lower than the hardness a diamond-like layer (DLC) which is already used for coating such focusing nozzles according to the prior art described above.
  • the coating according to the invention can be produced in one or more layers with application of other hard material layers, it is only important that the layer lying on the surface has a Titanium nitride portion has.
  • the coating according to the invention is easily possible by CVD methods.
  • the reaction gases can be selectively directed through the bore of the focusing nozzle, so that the complex multiple segmentation of the nozzle body according to the prior art can be avoided.
  • the increase in service life of focusing nozzles with the coating according to the invention over focusing nozzles made of uncoated carbide is outstanding and extends up to a doubling of the service life.
  • the surprising time-increasing effect due to the low differences in hardness between the base material and the coating is presumably due to the fact that in the case of focusing nozzles made of uncoated cemented carbide by the wet operating conditions increased by partially present low pH, surface corrosion, which triggers the binding metal of the hard metal alloy causes.
  • the remaining superficial hard material skeleton has a significantly lower abrasion resistance than a hard metal alloy completely bonded with binder metal.
  • the coating according to the invention largely prevents surface corrosion and thus triggering of a binder.
  • the hard material coating has proved to be particularly favorable to carry out the hard material coating as a single-layer titanium nitride or titanium carbonitride layer.
  • the most suitable layer thicknesses for the hard material coating are in the range of 1-15 ⁇ m.
  • the application of layers with titanium nitride fraction can be achieved particularly well by CVD (chemical vapor deposition) method. These methods offer the great advantage that the reaction gases can be easily guided, so that the hard coatings produced therewith can be deposited even in hard-to-reach places and therefore the inner walls of the narrow holes of the focusing nozzles can be easily coated.
  • the basic material for the focusing nozzle is a hard metal with up to 1.5 wt% cobalt as binder metal, up to 3 wt% mixed carbides, and tungsten carbide with a particle size of less than 0.4 microns remainder proven.
  • focusing nozzles of 76 mm in length, 9 mm in outer diameter and 0.7 mm in bore diameter were produced by extrusion molding and sintering.
  • the focusing nozzles had a hardness of 2550 HV 10 .
  • a portion of the focusing nozzles on the surface, including the bore wall, was coated with a 6.5 ⁇ m thick TiN layer by a medium temperature CVD method.
  • the layer hardness was about 2450 HV 01.
  • the focussing nozzles had a golden yellow color.
  • Focusing nozzles were prepared according to Example 1. A portion of these focusing nozzles were surface coated, including the bore wall, with a medium temperature CVD process with a two-ply hard coating of an 8 micron TiCN layer and a 4 micron thick TiN layer, with the top layer of the coating being the TiN layer , The hardness of the coating was about 2450 HV 01 .
  • the water pressure was 2250 bar
  • the pH of the water was 7.3.
  • service life increases of the inventively coated focusing nozzles compared to the uncoated reference nozzles in the range of factor 1.3 to 1.6 were found.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Vapour Deposition (AREA)
  • Coating Apparatus (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Description

Die Erfindung betrifft eine Fokussierdüse für das Abrasivwasserstrahlschneiden bestehend aus einem Düsenkörper aus Hartmetall der von einer Bohrung zur Fokussierung des Schneidstrahles durchsetzt ist und wobei zumindest die Bohrungswandung mit einer ein- oder mehrlagigen Hartstoffbeschichtung versehen ist.The invention relates to a Fokussierdüse for Abrasivwasserstrahlschneiden consisting of a nozzle body made of hard metal which is penetrated by a bore for focusing the cutting beam and wherein at least the bore wall is provided with a single or multi-layer hard material coating.

Derartige Fokussierdüsen sind Bestandteil von Schneidköpfen zum Abrasivwasserstrahlschneiden in denen der Schneidwasserstrahl und die zum Schneiden verwendeten Abrasivmittel wie Korund oder Sand in einer Mischkammer gemischt werden um die Schneidwirkung des Schneidwasserstrahls zu vergrößern. Die Fokussierdüsen dienen zur Beschleunigung und Zentrierung des Wasserstrahls und des gleichzeitig zugeführten Abrasivmittels. Zur besseren Einmischung des Abrasivmittels in den Wasserstrahl sind die Fokussierdüsen an der Einlassseite in der Regel trichterförmig erweitert, die daran anschließende, die Fokussierdüse durchsetzende Bohrung weist einen Durchmesser im Bereich von etwa 0,2 - 1,5 mm auf. Trotz der Umhüllung des Abrasivmittels mit dem Wasserstrahl sind die Fokussierdüsen einem sehr starken Verschleiß unterworfen. Bei zu starkem Verschleiß der Bohrungswandung ist die Zentrierwirkung nicht mehr ausreichend und die Düse muss gewechselt werden. Da jeder Düsenwechsel mit einer längeren und damit teuren Unterbrechung des Arbeitsablaufes verbunden ist wurden in der Vergangenheit erhebliche Anstrengungen unternommen die Standzeit derartiger Fokussierdüsen möglichst weitgehend zu vergrößern.
So wurden für derartige Fokussierdüsen vielfach hochverschleißfeste Hartmetalllegierungen auf Wolframcarbidbasis mit sehr geringen Bindemetallanteilen oder auch keramische Werkstoffe eingesetzt. Aber auch bei Verwendung dieser hochwertigen Werkstoffe waren die erreichbaren Standzeiten nicht ausreichend zufrieden stellend.Such focussing nozzles are part of cutting heads for Abrasivwasserstrahlschneiden in which the cutting water jet and used for cutting abrasive such as corundum or sand are mixed in a mixing chamber to increase the cutting action of the cutting water jet. The focusing nozzles serve to accelerate and center the water jet and the simultaneously supplied abrasive. For better mixing of the abrasive in the water jet, the focusing nozzles on the inlet side are usually funnel-shaped widened, the adjoining, the focusing nozzle passing through hole has a diameter in the range of about 0.2 to 1.5 mm. Despite the covering of the abrasive with the water jet, the focussing nozzles are subject to very heavy wear. If the bore wall is worn too much, the centering effect is no longer sufficient and the nozzle must be replaced. Since each nozzle change is associated with a longer and therefore expensive interruption of the workflow, considerable efforts have been made in the past to increase the service life of such focusing as much as possible.
For example, highly wear-resistant tungsten carbide-based hard metal alloys with very low binder metal contents or even ceramic materials have been used for such focusing nozzles. But even with the use of these high-quality materials, the achievable service life was not sufficiently satisfactory.

Zur weiteren Steigerung der Standzeit hat man daher versucht die Innenwandung der durchbohrten Zentrierdüse durch Hartstoffschichten vor übermäßigem Verschleiß zu schützen. Das Problem dabei ist, dass es schwierig ist die Innenwandungen dieser verhältnismäßig langen Bohrungen mit kleinem Durchmesser gleichmäßig mit einer schützenden Hartstoffschicht zu versehen.To further increase the service life has therefore tried before the inner wall of the pierced centering through hard material layers to protect excessive wear. The problem with this is that it is difficult to uniformly provide the inner walls of these relatively long, small diameter bores with a protective layer of hard material.

So beschreibt beispielsweise die WO 98/15386 eine Fokussierdüse die auf der Innenwandung mit einer verschleißfesten diamantartigen Schicht aus amorphem Kohlenstoff (DLC) versehen ist. Das Aufbringen der Schicht erfolgt mittels eines Laser-ARC-Beschichtungsverfahrens wobei im Vakuum ein hochaktiviertes Plasma mittels einer gepulsten, Lichtbogenentladung zwischen einer Quelle aus dem Beschichtungsmaterial und der zu beschichtenden Düse hergestellt werden muss. Die zu beschichtende Oberfläche muss dazu frei zugänglich sein, so dass man die Fokussierdüse zur Beschichtung der Bohrungswandung in mehrere Segmente unterteilen und diese Segmente nach erfolgter Beschichtung wieder dicht zusammensetzen muss was mit erheblichem Aufwand verbunden ist.
Die Aufgabe der vorliegenden Erfindung ist es daher die Innenwandung einer Fokussierdüse aus Hartmetall mit einer Beschichtung zu versehen die ausreichend verschleißfest ist und gleichzeitig leicht ohne aufwendige Segmentierung der Düse aufgebracht werden kann.For example, describes the WO 98/15386 a focusing nozzle which is provided on the inner wall with a wear-resistant diamond-like layer of amorphous carbon (DLC). The layer is applied by means of a laser ARC coating method, wherein a highly activated plasma has to be produced in vacuum by means of a pulsed, arc discharge between a source of the coating material and the nozzle to be coated. The surface to be coated must be freely accessible, so that one has to divide the focusing nozzle for coating the bore wall into several segments and these segments must again close together after coating, which is associated with considerable effort.
The object of the present invention is therefore to provide the inner wall of a focusing nozzle made of hard metal with a coating which is sufficiently resistant to wear and at the same time can be easily applied without complicated segmentation of the nozzle.

Erfindungsgemäß wird dies dadurch erreicht, dass die Hartstoffbeschichtung zumindest an der freien Oberfläche eine Schicht mit Titannitridanteil aufweist. Dass durch die Verwendung einer derartigen Beschichtung als Hartstoffschicht eine wesentliche Verbesserung der Verschleißbeständigkeit bei Fokussierdüsen erreicht wird war nicht zu erwarten, da die Härten der an der Oberfläche liegenden Schicht mit Titannitridanteil kaum höher sind als die Härte des verwendeten Hartmetallgrundmaterials und deutlich geringer sind als die Härte einer diamantartigen Schicht ( DLC ) die bereits zur Beschichtung derartiger Fokussierdüsen entsprechend dem eingangs beschriebenen Stand der Technik eingesetzt wird. Die erfindungsgemäße Beschichtung kann ein- oder mehrlagig auch unter Aufbringung anderer Hartstoffschichten hergestellt werden, wichtig ist nur, dass die an der Oberfläche liegende Schicht einen Titannitridanteil aufweist. Neben reinem Titannitrid für diese Oberflächenschicht sind beispielsweise auch Titankarbonitrid oder Titanoxikarbonitrid denkbar.
Mit der erfindungsgemäßen Beschichtung wird zwar die Härte bekannter DLC-Schichten nicht ganz erreicht, dafür ist die Aufbringung der erfindungsgemäßen Beschichtung problemlos durch CVD-Verfahren möglich. Bei diesem Beschichtungsverfahren können die Reaktionsgase gezielt durch die Bohrung der Fokussierdüse geleitet werden, so dass die aufwendige mehrfache Segmentierung des Düsenkörpers entsprechend dem Stand der Technik vermieden werden kann. Die Standzeiterhöhung von Fokussierdüsen mit der erfindungsgemäßen Beschichtung gegenüber Fokussierdüsen aus unbeschichtetem Hartmetall ist überragend und reicht bis zu einer Verdoppelung der Standzeit.According to the invention, this is achieved in that the hard material coating has a layer with titanium nitride content at least on the free surface. It was not to be expected that the use of such a coating as a hard material layer would result in a significant improvement in the wear resistance of focusing nozzles, since the hardnesses of the titanium nitride layer on the surface are hardly higher than the hardness of the carbide base material used and are significantly lower than the hardness a diamond-like layer (DLC) which is already used for coating such focusing nozzles according to the prior art described above. The coating according to the invention can be produced in one or more layers with application of other hard material layers, it is only important that the layer lying on the surface has a Titanium nitride portion has. In addition to pure titanium nitride for this surface layer, for example titanium carbonitride or titanium oxycarbonitride are also conceivable.
Although the hardness of known DLC layers is not quite reached with the coating according to the invention, the application of the coating according to the invention is easily possible by CVD methods. In this coating method, the reaction gases can be selectively directed through the bore of the focusing nozzle, so that the complex multiple segmentation of the nozzle body according to the prior art can be avoided. The increase in service life of focusing nozzles with the coating according to the invention over focusing nozzles made of uncoated carbide is outstanding and extends up to a doubling of the service life.

Der wegen der geringen Härteunterschiede zwischen Grundmaterial und Beschichtung überraschende standzeiterhöhende Effekt ist vermutlich darauf zurückzuführen, dass es bei Fokussierdüsen aus unbeschichtetem Hartmetall durch die nassen Betriebsbedingungen verstärkt durch z.T. vorliegende niedrige pH-Werte, zu einer Oberflächenkorrosion kommt, welche eine Auslösung des Bindemetalls aus der Hartmetalllegierung bewirkt. Das verbleibende oberflächliche Hartstoffskelett weist gegenüber einer vollständig mit Bindemetall gebundenen Hartmetalllegierung eine deutlich geringere Abrasionsbeständigkeit auf. Durch die erfindungsgemäße Beschichtung wird eine Oberflächenkorrosion und damit eine Bindemittelauslösung weitgehend verhindert.
Selbst wenn mit Strahlmitteln gearbeitet wird, bei denen es auf Grund eines hohen
pH-Wertes zu keiner wesentlichen Bindemetallauslösung kommt kann durch die erfindungsgemäße Beschichtung eine deutliche Verbesserung der Standzeit festgestellt werden, was auf den zusätzlichen Glättungseffekt der Beschichtung vor allem im Bereich unmittelbar hinter dem Eintrittskonus der Fokussierdüse zurückzuführen ist. Durch die glattere Oberfläche in diesem Bereich beruhigt sich die inkohärente Strahlzone deutlich schneller, wodurch der Verschleiß stark verringert wird.The surprising time-increasing effect due to the low differences in hardness between the base material and the coating is presumably due to the fact that in the case of focusing nozzles made of uncoated cemented carbide by the wet operating conditions increased by partially present low pH, surface corrosion, which triggers the binding metal of the hard metal alloy causes. The remaining superficial hard material skeleton has a significantly lower abrasion resistance than a hard metal alloy completely bonded with binder metal. The coating according to the invention largely prevents surface corrosion and thus triggering of a binder.
Even when working with abrasives, which are due to a high
pH value to no significant binder metal release can be determined by the coating according to the invention a significant improvement in tool life, which is due to the additional smoothing effect of the coating, especially in the area immediately behind the inlet cone of the focusing. Due to the smoother surface in this area, the incoherent jet zone settles much faster, which greatly reduces wear.

Als besonders günstig hat es sich erwiesen die Hartstoffbeschichtung als eine einlagige Titannitrid- oder Titankarbonitridschicht auszuführen.
Die zweckmäßigsten Schichtstärken für die Hartstoffbeschichtung liegen im Bereich von 1-15 µm.
Die Aufbringung von Schichten mit Titannitridanteil lässt sich besonders gut über CVD (chemical vapour deposition) Verfahren realisieren. Diese Verfahren bieten den großen Vorteil, dass die Reaktionsgase leicht geführt werden können, so dass sich die damit hergestellten Hartstoffschichten auch an schwer zugänglichen Stellen abscheiden lassen und daher auch die Innenwandungen der engen Bohrungen der Fokussierdüsen problemlos beschichtet werden können.
Als Grundmaterial für die Fokussierdüse hat sich ein Hartmetall mit bis zu 1,5 Gew % Kobalt als Bindemetall, bis zu 3 Gew % Mischkarbiden, und Wolframkarbid mit einer Korngröße von weniger als 0,4 µm als Rest, bewährt.It has proved to be particularly favorable to carry out the hard material coating as a single-layer titanium nitride or titanium carbonitride layer.
The most suitable layer thicknesses for the hard material coating are in the range of 1-15 μm.
The application of layers with titanium nitride fraction can be achieved particularly well by CVD (chemical vapor deposition) method. These methods offer the great advantage that the reaction gases can be easily guided, so that the hard coatings produced therewith can be deposited even in hard-to-reach places and therefore the inner walls of the narrow holes of the focusing nozzles can be easily coated.
The basic material for the focusing nozzle is a hard metal with up to 1.5 wt% cobalt as binder metal, up to 3 wt% mixed carbides, and tungsten carbide with a particle size of less than 0.4 microns remainder proven.

Im folgenden wird die Erfindung an Hand von Beispielen näher erläutert.In the following the invention will be explained in more detail with reference to examples.

Beispiel 1example 1

Aus einer Hartmetalllegierung mit 1 Gew % Kobalt als Bindemetall und Wolframkarbid mit 0,2 µm mittlerer Korngröße als Rest, wurden Fokussierdüsen mit 76 mm Länge, 9 mm Außendurchmesser und 0,7 mm Bohrungsdurchmesser durch Strangpressen und Sintern hergestellt. Die Fokussierdüsen wiesen eine Härte von 2550 HV10 auf. Anschließend wurde ein Teil der Fokussierdüsen an der Oberfläche einschließlich der Bohrungswandung mit einem Mitteltemperatur CVD-Verfahren mit einer 6,5 µm starken TiN - Schicht beschichtet. Die Schichthärte betrug etwa 2450 HV 01. Die Fokussierdüsen wiesen eine goldgelbe Färbung auf. In einem Vergleichstest wurde ein Teil der erfindungsgemäß beschichteten Fokussierdüsen mit unbeschichteten Referenzdüsen unter praxisnahen Bedingungen zum Wasserstrahlschneiden eingesetzt. Der Wasserdruck betrug 2250 bar, bei einem pH-Wert des Wassers von 6,1. Als Abrasivmittel wurde Sand mit einer mittleren Korngröße von 260 µm und einer Zufuhrmenge von 9 g/s verwendet. Als Ergebnis wurden Standzeiterhöhungen der beschichteten Fokussierdüsen gegenüber den unbeschichteten Fokussierdüsen im Bereich von Faktor 1,8 bis 2,1 festgestellt.From a hard metal alloy with 1 wt% cobalt as the binder metal and tungsten carbide with 0.2 micron average grain size as the remainder, focusing nozzles of 76 mm in length, 9 mm in outer diameter and 0.7 mm in bore diameter were produced by extrusion molding and sintering. The focusing nozzles had a hardness of 2550 HV 10 . Subsequently, a portion of the focusing nozzles on the surface, including the bore wall, was coated with a 6.5 μm thick TiN layer by a medium temperature CVD method. The layer hardness was about 2450 HV 01. The focussing nozzles had a golden yellow color. In a comparative test, a portion of the inventively coated focusing nozzles with uncoated reference nozzles was used under practical conditions for water jet cutting. The water pressure was 2250 bar, with a pH of the water of 6.1. The abrasive used was sand having an average particle size of 260 μm and a feed rate of 9 g / s. As a result, lifetime increases of the coated focussing nozzles compared to the uncoated focusing nozzles in the range of factor 1.8 to 2.1 found.

Beispiel 2Example 2

Fokussierdüsen wurden entsprechend Beispiel 1 hergestellt. Ein Teil dieser Fokussierdüsen wurde an der Oberfläche einschließlich der Bohrungswandung mit einem Mitteltemperatur CVD-Verfahren mit einer zweilagigen Hartstoffbeschichtung aus einer 8 µm starken TiCN-Schicht und einer 4 µm starken TiN-Schicht versehen, wobei die oberste Lage der Beschichtung die TiN-Schicht war. Die Härte der Beschichtung lag bei ca. 2450 HV01.
Im Vergleichstest der erfindungsgemäß beschichteten Fokussierdüsen und der unbeschichteten Referenzdüsen beim Wasserstrahlschneiden betrug der Wasserdruck 2250 bar, der pH-Wert des Wassers lag bei 7,3. Als Abrasivmittel wurde wiederum Sand mit einer Körnung von 260 µm und einer Zufuhrmenge von 9 g/s eingesetzt. Als Ergebnis wurden Standzeiterhöhungen der erfindungsgemäß beschichteten Fokussierdüsen gegenüber den unbeschichteten Referenzdüsen im Bereich von Faktor 1,3 bis 1,6 festgestellt.Focusing nozzles were prepared according to Example 1. A portion of these focusing nozzles were surface coated, including the bore wall, with a medium temperature CVD process with a two-ply hard coating of an 8 micron TiCN layer and a 4 micron thick TiN layer, with the top layer of the coating being the TiN layer , The hardness of the coating was about 2450 HV 01 .
In the comparative test of the invention coated focusing nozzles and the uncoated reference nozzles in water jet cutting, the water pressure was 2250 bar, the pH of the water was 7.3. As abrasive again sand with a grain size of 260 microns and a feed rate of 9 g / s was used. As a result, service life increases of the inventively coated focusing nozzles compared to the uncoated reference nozzles in the range of factor 1.3 to 1.6 were found.

Claims (5)

  1. Focusing nozzle for abrasive water-jet cutting, consisting of a nozzle body made of hard metal, said nozzle body being penetrated by a bore for focusing the cutting jet, and at least the bore wall being provided with a single-ply or multi-ply coating of hard material,
    characterised in that
    the coating of hard material exhibits a layer having a content of titanium nitride at least on its free surface.
  2. Focusing nozzle for abrasive water-jet cutting according to Claim 1, characterised in that the coating of hard material is realised in the form of a single-ply layer of titanium nitride or titanium carbonitride.
  3. Focusing nozzle for abrasive water-jet cutting according to Claim 1 or 2, characterised in that the layer thickness of the coating of hard material lies within the range from 1 µm to 15 µm.
  4. Focusing nozzle for abrasive water-jet cutting according to one of Claims 1 to 3, characterised in that the layer is applied by means of CVD processes.
  5. Focusing nozzle for abrasive water-jet cutting according to one of Claims 1 to 4, characterised in that the hard metal for the body consists of up to 1.5 wt.% cobalt as binding metal, up to 3 wt.% mixed carbides, and tungsten carbide with a grain size of less than 0.4 µm as remainder.
EP05769987A 2004-08-16 2005-08-09 Focussing nozzle Not-in-force EP1796875B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05769987T PL1796875T3 (en) 2004-08-16 2005-08-09 Focussing nozzle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0059104U AT7925U1 (en) 2004-08-16 2004-08-16 focusing nozzle
PCT/AT2005/000320 WO2006017873A1 (en) 2004-08-16 2005-08-09 Focussing nozzle

Publications (2)

Publication Number Publication Date
EP1796875A1 EP1796875A1 (en) 2007-06-20
EP1796875B1 true EP1796875B1 (en) 2008-07-23

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ID=34916765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05769987A Not-in-force EP1796875B1 (en) 2004-08-16 2005-08-09 Focussing nozzle

Country Status (10)

Country Link
US (1) US20070161341A1 (en)
EP (1) EP1796875B1 (en)
AT (2) AT7925U1 (en)
CA (1) CA2577151C (en)
DE (1) DE502005004834D1 (en)
DK (1) DK1796875T3 (en)
ES (1) ES2307199T3 (en)
MX (1) MX2007001816A (en)
PL (1) PL1796875T3 (en)
WO (1) WO2006017873A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7832481B2 (en) * 2008-08-20 2010-11-16 Martindale James G Fluid perforating/cutting nozzle
US20100088894A1 (en) * 2008-10-10 2010-04-15 Stark Roger M Method for preparing abrasive waterjet mixing tubes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2090371A1 (en) * 1992-03-27 1993-09-28 William Frank Banholzer Water jet mixing tubes used in water jet cutting devices and method of preparation thereof
US5626508A (en) * 1995-04-20 1997-05-06 Aqua-Dyne, Inc. Focusing nozzle
DE19640920C1 (en) * 1996-10-04 1998-01-22 Saechsische Werkzeug Und Sonde Focussing nozzle for cutting by abrasive water-jet
US6425805B1 (en) * 1999-05-21 2002-07-30 Kennametal Pc Inc. Superhard material article of manufacture
US6752685B2 (en) * 2001-04-11 2004-06-22 Lai East Laser Applications, Inc. Adaptive nozzle system for high-energy abrasive stream cutting

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Publication number Publication date
EP1796875A1 (en) 2007-06-20
PL1796875T3 (en) 2009-01-30
WO2006017873A1 (en) 2006-02-23
CA2577151C (en) 2013-01-22
CA2577151A1 (en) 2006-02-23
ATE401992T1 (en) 2008-08-15
ES2307199T3 (en) 2008-11-16
MX2007001816A (en) 2007-04-26
US20070161341A1 (en) 2007-07-12
DE502005004834D1 (en) 2008-09-04
DK1796875T3 (en) 2008-11-17
AT7925U1 (en) 2005-11-15

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