EP0142816B1 - Powder flame spray device with an accelerator nozzle - Google Patents

Powder flame spray device with an accelerator nozzle Download PDF

Info

Publication number
EP0142816B1
EP0142816B1 EP84113717A EP84113717A EP0142816B1 EP 0142816 B1 EP0142816 B1 EP 0142816B1 EP 84113717 A EP84113717 A EP 84113717A EP 84113717 A EP84113717 A EP 84113717A EP 0142816 B1 EP0142816 B1 EP 0142816B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
adapter sleeve
sleeve
flame
powder
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
Application number
EP84113717A
Other languages
German (de)
French (fr)
Other versions
EP0142816A3 (en
EP0142816A2 (en
Inventor
Erwin Hühne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6759072&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0142816(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT84113717T priority Critical patent/ATE39222T1/en
Publication of EP0142816A2 publication Critical patent/EP0142816A2/en
Publication of EP0142816A3 publication Critical patent/EP0142816A3/en
Application granted granted Critical
Publication of EP0142816B1 publication Critical patent/EP0142816B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/20—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion
    • B05B7/201—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle
    • B05B7/205—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed by flame or combustion downstream of the nozzle the material to be sprayed being originally a particulate material
    • 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
    • H05H1/42—Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder, liquid

Definitions

  • the invention relates to a powder flame spraying device consisting of a device base body, on which a flame spray nozzle with a special accelerator nozzle is arranged on its end face, which is supplied with accelerator gas from the device base body, for which purpose blow-out openings are provided on the device base body, which have an annular gap between the flame spray nozzle and a removable one Union sleeve in connection.
  • Such a powder flame spraying device is known from US Pat. No. 3,455,510.
  • an annular nozzle is provided between the coupling sleeve and the flame spray nozzle on the front side of this device, which receives the accelerator gas from the annular gap.
  • Similar devices are known from FR-PS-1 084 684 and US-PS-3 085 750; In these devices, too, the accelerator gas is blown out of the flame spray nozzle from an annular gap between the flame spray nozzle and a removable union sleeve on the front sides thereof by a special accelerator nozzle in the immediate vicinity of the flame.
  • Such accelerator systems are required in order to give the powder material melted in the flame from the flame spray nozzle a sufficient kinetic energy; this is the prerequisite for achieving a compact, firm layer structure of the applied flame spray material.
  • the exit of the accelerator nozzle for the accelerator gas is at the level of the exit of the flame gases from the flame spray nozzle.
  • the accelerator gas will lower the combustion temperature in the flame, which in turn is not desirable.
  • a powder flame spraying device has therefore already been built in which two special nozzle tubes are attached to a clamping ring on the flame spraying nozzle (DE-A 3 102 848). These tubes are then further away from the flame spray nozzle and its flame and can then be aligned at the flame tip or in front of it at any point where the required kinetic energy can be given to the material that has already melted. These tubes are fed separately from a special distributor piece on the basic device body through special hose feeds for the accelerator gas. This device is cumbersome because the clamping ring with the tubes and the distributor with the hose connections have to be mounted separately on the powder flame spraying device.
  • the alignment of the tubes must be carried out separately so that they blow the accelerator gas into the correct position with respect to the flame in front of the flame spray nozzle.
  • the separate feed hoses, the distributor and the clamping ring with the protruding nozzle tubes hinder the proper operation of the powder flame spraying device by the operator during operation.
  • the invention has for its object to provide a powder flame spraying device of the type mentioned, in which the accelerator nozzle does not hinder the actual flame, prevents overheating of the sprayed substrate and is nevertheless integrated into the rest of the device, i.e. does not require any special assembly and feeds and the like .
  • This object is achieved in that radial openings are provided in the coupling sleeve, which is opposite an annular space of a fitting sleeve arranged on the coupling sleeve, which has nozzle tubes directed towards the end face of the flame spray nozzle, which are connected through the annular space to the annular gap.
  • the accelerator nozzle in the form of the nozzle tubes is thus radially spaced from the flame or the flame spray nozzle; the nozzle tubes can therefore not be overheated and certainly not melt and thus become unusable.
  • the adapter sleeve with the nozzle tubes sits directly on the union sleeve and thus forms a unit with the result when handling. Separate feed lines, in particular separate feed hoses, are not required, since the accelerator nozzle is fed from the annular gap between the flame spray nozzle and the union sleeve from the base body through the outlet openings there. At the end, where the accelerator nozzle was formerly provided between the flame spray nozzle and the union sleeve, the annular gap can now be closed without outlet openings for the accelerator gas.
  • a powder flame spraying device corresponding to the genus can also be closed be converted to a powder flame spraying device according to the invention.
  • a powder flame spraying device according to the invention instead of the previous union sleeve, such a corresponding one, but with radial openings, is now provided, on which the adapter sleeve according to the invention with the nozzle tubes is then to be arranged.
  • an end ring closing the annular gap on its end side can now be provided.
  • the coupling sleeve and the fitting sleeve are designed to be cylindrical to match one another, and a projection is arranged on the end face of the coupling sleeve as a stop for the fitting sleeve, while a thread is provided on the flame spray nozzle on the side of the fitting sleeve adjacent to the basic device body a nut is arranged with a suitable internal thread. Since the coupling sleeve itself is already removable, the adapter sleeve can also be removed from the removed coupling sleeve by first unscrewing the nut from the same. Then the adapter sleeve can be pulled off the union sleeve.
  • This embodiment is also practical when the cap sleeve is attached. Because if the nut is loosened, the adapter sleeve can be rotated in any way on the union sleeve; thus the nozzle tubes of the adapter sleeve can be rotated by the user at will and aligned accordingly.
  • the adapter sleeve can be removed from the union sleeve, specifically in the direction of the side of the adapter sleeve adjacent to the main body of the device, the outside diameter of the thread and the remaining union sleeve in particular is not larger than the inside diameter of the adapter sleeve.
  • FIG. 1 An embodiment of the invention is shown in FIG. 1 below. It is explained below.
  • the complete powder flame spraying device is not shown, but only a part of the basic device body 1 thereof, to which the coupling sleeve 25 with the flame spraying nozzle 2 is connected.
  • the flame spray nozzle 2 itself is not arranged directly on the device body 1, but is connected to the same via an adapter 26.
  • a central transport gas line 3 and fuel gas lines 4, 4 ′ emerge from the basic device body 1.
  • the gases are passed on in a manner known per se into the actual flame spray nozzle 2, where they are also mixed with one another according to the injector principle.
  • the actual flame spray nozzle 2 is held on the adapter 26 by the nozzle press screw 18 in a manner known per se.
  • the annular gap 11 is left between the adapter 26 and the flame spray nozzle 2 or the nozzle press screw 18 and the coupling sleeve 25.
  • the blow-out openings (not shown) for the accelerator gas from the device base body 1 open into this annular gap 11.
  • the annular gap 11 is closed off at the end by the end ring 15.
  • the transport gas from the transport gas line 3 is passed via a known injector pressure nozzle 5 into a corresponding, known injector gap 6 and from there it is led from the injector mixing nozzle 7 into a central transport gas line of the adapter 26; from there the transport gas with the application powder then reaches a corresponding central line in the flame spray nozzle 2, from where it exits through the powder bores 29 on the end face of the flame spray nozzle 2.
  • the fuel gas mixture is blown out and ignited in a star of fuel gas outlet bores 16 around these powder bores 29.
  • the union sleeve 25 now has radial openings 22 in the region of its end face through which the accelerator gas can escape from the annular gap 11.
  • the accelerator gas can reach the nozzle tubes 20 from the annular gap 11 through the openings 22 and the annular space 30. It emerges from the same through the compressed air outlets 14.
  • the adapter sleeve 31 is pressed against the projection 32 on the end face of the union sleeve 25. For this purpose, it is pressed on the device side by the nut 9 towards the end face of the entire arrangement.
  • the nut 9 has a thread that matches the thread 33 of the union sleeve 25.
  • the cross section shown in this figure relates to an embodiment in which the coupling sleeve 25 and the fitting sleeve 31 are designed to be cylindrical to match one another.
  • the cross section is through the central transport gas line 3, as is obvious.
  • FIG. 2 shows a special development of the powder flame spraying device, only the front part of the adapter sleeve 31 with the flame spray nozzle 2 being shown for the sake of simplicity.
  • the one with the 1 corresponding components have the same reference numerals and are not explained here.
  • the adapter sleeve 31 is shown in a position rotated by 90 angular degrees with respect to the longitudinal axis 38 relative to FIG. 1.
  • two diametrically opposite cooling nozzles 34 are provided, which on the one hand open into the annular space 30 supplied with compressed air and on the other hand protrude forward over the end face 39.
  • the nozzle tubes 20 are angled to the longitudinal axis 38, while the cooling nozzles 34 are straight and project with their front ends of the nozzle tube 20 at a predetermined distance 40.
  • the two angled nozzle tubes 20 which have already been explained are effective according to the invention as accelerator nozzles.
  • the two cooling nozzles 34 are provided in this essential embodiment.
  • a single cooling nozzle 34 can also be provided, or further cooling nozzles can also be arranged. This ensures, in a surprisingly simple manner, that overheating of the spray layer is reliably prevented as a result of the temperature radiation into the workpiece to be coated.
  • the cooling nozzle 34 is preferably exchangeable. This can be achieved in particular by means of an external thread 36 with. which the cooling nozzle 34 is screwed into a corresponding internal thread 37 of the adapter sleeve 31. Depending on the conditions of use, the cooling nozzle 34 can be removed if necessary and the threaded bore of the adapter sleeve 31 can be sealed by means of a sealing plug or the like in the context of this invention; in this case, the device explained with reference to FIG. 2 is identical in function and mode of operation to that according to FIG. 1. Both the accelerator nozzles or the nozzle tubes 20 and the cooling nozzles 34 are, according to the invention, together through the opening 22 and the annular space 30 Accelerator gas, especially compressed air, is fed. Additional supply connections or the like for the cooling nozzles are dispensed with due to the integration of cooling nozzles 34 and nozzle tubes 20 in the adapter sleeve 31.
  • the cooling nozzles 34 can also be installed in the head in such a way that they can be fed from the outside with any medium which can change to the gas state, for example with liquid nitrogen or with liquid carbon dioxide, so that an even more intensive cooling effect on the substrate can be achieved is.
  • Special nozzles for example ball-bearing nozzles, which allow the direction of exit of the cooling medium to be controlled as desired, may also be used at the outlet opening 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)

Abstract

1. Powder flame sprayer consisting of a main body (1), on which is arranged a flame spraying nozzle (2) with a special accelerator nozzle at its front end, which is supplied with accelerator gas by the main body, discharge openings connected to an annular gap (11) between the flame spraying nozzle (2) and a detachable retaining sleeve (25) being provided for this purpose on the main body, in which radial openings (22) are provided in the retaining sleeve (25) opposite an annular space (30) of an adapter sleeve (31), which is arranged on the retaining sleeve (25) and has nozzle tubes (20) directed to the front end of the flame spraying nozzle (2) and connected by the annular space (30) to the annular gap (11).

Description

Die Erfindung betrifft ein Pulverflammspritzgerät bestehend aus einem Gerätegrundkörper, an dem eine Flammspritzdüse mit einer besonderen Beschleunigerdüse an ihrer Stirnseite angeordnet ist, die vom Gerätegrundkörper mit Beschleunigergas gespeist wird, wofür an dem Gerätegrundkörper Ausblasöffnungen vorgesehen sind, die mit einem Ringspalt zwischen der Flammspritzdüse und einer abnehmbaren Überwurfhülse in Verbindung stehen.The invention relates to a powder flame spraying device consisting of a device base body, on which a flame spray nozzle with a special accelerator nozzle is arranged on its end face, which is supplied with accelerator gas from the device base body, for which purpose blow-out openings are provided on the device base body, which have an annular gap between the flame spray nozzle and a removable one Union sleeve in connection.

Aus der US-PS-3 455 510 ist ein solches Pulverflammspritzgerät bekannt. Als besondere Beschleunigerdüse ist bei diesem Gerät zwischen der überwurfhülse und der Flammspritzdüse an deren Stirnseite eine Ringdüse vorgesehen, die das Beschleunigergas aus dem Ringspalt erhält. Ähnliche Geräte sind aus der FR-PS-1 084 684 und der US-PS-3 085 750 bekannt; auch bei diesen Geräten wird das Beschleunigergas aus einem Ringspalt zwischen der Flammspritzdüse und einer abnehmbaren Überwurfhülse an deren Stirnseiten durch eine besondere Beschleunigerdüse in der unmittelbaren Umgebung der Flamme aus der Flammspritzdüse ausgeblasen.Such a powder flame spraying device is known from US Pat. No. 3,455,510. As a special accelerator nozzle, an annular nozzle is provided between the coupling sleeve and the flame spray nozzle on the front side of this device, which receives the accelerator gas from the annular gap. Similar devices are known from FR-PS-1 084 684 and US-PS-3 085 750; In these devices, too, the accelerator gas is blown out of the flame spray nozzle from an annular gap between the flame spray nozzle and a removable union sleeve on the front sides thereof by a special accelerator nozzle in the immediate vicinity of the flame.

Solche Beschleunigersysteme sind erforderlich, um dem in der Flamme aus der Flammspritzdüse geschmolzenen Pulvermaterial eine ausreichende kinetische Energie zu geben; dies ist Voraussetzung dafür, daß ein kompakter, fester Schichtaufbau des aufgetragenen Flammspritzmaterials erzielt wird.Such accelerator systems are required in order to give the powder material melted in the flame from the flame spray nozzle a sufficient kinetic energy; this is the prerequisite for achieving a compact, firm layer structure of the applied flame spray material.

Bei diesen bekannten Geräten liegt jedoch der Austritt der Beschleunigerdüse für das Beschleunigergas auf der Höhe des Austrittes der Flammgase aus der Flammspritzdüse. Infolgedessen wird das Beschleunigergas die Verbrennungstemperatur in der Flamme senken, was wiederum nicht erwünscht ist.In these known devices, however, the exit of the accelerator nozzle for the accelerator gas is at the level of the exit of the flame gases from the flame spray nozzle. As a result, the accelerator gas will lower the combustion temperature in the flame, which in turn is not desirable.

Man hat daher auch schon ein Pulverflammspritzgerät gebaut, bei dem zwei besondere Düsenröhrchen an einem Spannring auf der Flammspritzdüse befestigt sind (DE-A 3 102 848). Diese Röhrchen sind danach von der Flammspritzdüse und deren Flamme weiter entfernt und können dann an der Flammspitze oder auch vor derselben auf beliebige Punkte ausgerichtet werden, wo dem dann schon geschmolzenen Material die erforderliche kinetische Energie aufgegeben werden kann. Diese Röhrchen werden separat aus einem besonderen Verteilerstück an dem Grundgerätekörper durch besondere Schlauchzuführungen für das Beschleunigergas mit demselben gespeist. Diese Vorrichtung ist umständlich, da der Spannring mit den Röhrchen und das Verteilerstück mit den Schlauchverbindungen gesondert auf dem Pulverflammspritzgerät montiert werden müssen. Außerdem ist die Ausrichtung der Röhrchen jeweils gesondert vorzunehmen, damit sie das Beschleunigergas an die richtige Stelle hinsichtlich der Flamme vor der Flammspritzdüse blasen. Hinzu kommt noch, daß die gesonderten Zuführschläuche, dass Verteilerstück und der Spannring mit den abstehenden Düsenröhrchen im Betrieb die ordnungsgemäße Führung des Pulverflammspritzgerätes durch den Bedienungsmann behindern.A powder flame spraying device has therefore already been built in which two special nozzle tubes are attached to a clamping ring on the flame spraying nozzle (DE-A 3 102 848). These tubes are then further away from the flame spray nozzle and its flame and can then be aligned at the flame tip or in front of it at any point where the required kinetic energy can be given to the material that has already melted. These tubes are fed separately from a special distributor piece on the basic device body through special hose feeds for the accelerator gas. This device is cumbersome because the clamping ring with the tubes and the distributor with the hose connections have to be mounted separately on the powder flame spraying device. In addition, the alignment of the tubes must be carried out separately so that they blow the accelerator gas into the correct position with respect to the flame in front of the flame spray nozzle. In addition, the separate feed hoses, the distributor and the clamping ring with the protruding nozzle tubes hinder the proper operation of the powder flame spraying device by the operator during operation.

Es wurde daher schon versucht, bei einem Pulverflammspritzgerät der eingangs genannten Gattung die Beschleunigerdüse an der Stirnseite durch gesonderte Düsenröhrchen fortzusetzen, die somit die Flammspritzdüse überragen. lnsbesonders sofern die Düsenröhrchen zentrierend ausgerichtet sind, geraten sie unmittelbar in den heißen Bereich der Flamme, heizen sich dort stark auf und können sogar abschmelzen und somit vollkommen unbrauchbar werden. Richtet man die Düsenröhrchen hingegen axial parallel zur Flamme aus, so heizt sich das von der Flamme angespritzte Substrag zu sehr auf, so daß beim Abkühlen desselben nach dem Spritzvorgang die aufgespritzten Schichten häufig abblättern bzw. Risse bilden. Dies muß selbstverständlich unbedingt vermieden werden.It has therefore already been attempted to continue the accelerator nozzle on the front side of a powder flame spraying device of the type mentioned at the front by separate nozzle tubes which thus project above the flame spraying nozzle. Especially if the nozzle tubes are aligned centering, they get directly into the hot area of the flame, heat up there intensely and can even melt and thus become completely unusable. If, on the other hand, the nozzle tubes are aligned axially parallel to the flame, the substrate sprayed on by the flame heats up too much, so that when the same cools down after the spraying process, the sprayed-on layers often peel off or form cracks. Of course, this must be avoided.

Der Erfindung liegt die Aufgabe zugrunde, ein Pulverflammspritzgerät der eingangs genannten Gattung zu schaffen, bei dem die Beschleunigerdüse die eigentliche Flamme nicht behindert, eine Überhitzung des bespritzten Substrates verhindert und gleichwohl in das übrige Gerät integriert wird, also keine besondere Montage und Zuführungen und dergleichen erfordert.The invention has for its object to provide a powder flame spraying device of the type mentioned, in which the accelerator nozzle does not hinder the actual flame, prevents overheating of the sprayed substrate and is nevertheless integrated into the rest of the device, i.e. does not require any special assembly and feeds and the like .

Diese Aufgabe wird erfindungsgemäß dadurch elöst, daß in der Überwurfhülse radiale Öffnungen vorgesehen sind, denen ein Ringraum einer auf der Überwurfhülse angeordneten Paßhülse gegenüberliegt, die zur Stirnseite der Flammspritzdüse gerichtete Düsenrohre aufweist, die durch den Ringraum mit dem Ringspalt in Verbindung stehen.This object is achieved in that radial openings are provided in the coupling sleeve, which is opposite an annular space of a fitting sleeve arranged on the coupling sleeve, which has nozzle tubes directed towards the end face of the flame spray nozzle, which are connected through the annular space to the annular gap.

Somit ist die Beschleunigerdüse in Form der Düsenrohre von der Flamme bzw. der Flammspritzdüse radial beabstandet; die Düsenrohre können demnach nicht überheizt werden und schon gar nicht abschmelzen und somit unbrauchbar werden. Die Paßhülse mit den Düsenrohren sitzt unmittelbar auf der Überwurfhülse und bildet somit mit derselben im Ergebnis bei der Handhabung eine Einheit. Gesonderte Zuleitungen, insbesondere gesonderte Zuleitungsschläuche, werden nicht benötigt, da ja die Beschleunigerdüse aus dem Ringspalt zwischen der Flammspritzdüse und der Überwurfhülse aus dem Gerätegrundkörper durch die dortigen Ausblasöffnungen gespeist wird. An der Stirnseite, wo ehemals zwischen der Flammspritzdüse und der Überwurfhülse die Beschleunigerdüse vorgesehen war, kann nunmehr der Ringspalt ohne Austrittsöffnungen für das Beschleunigergas abgeschlossen sein. Gemäß der Erfindung kann ein der Gattung entsprechendes Pulverflammspritzgerät auch zu einem erfindungsgemäßen Pulverflammspritzgerät umgerüstet werden. Statt der bisherigen Überwurfhülse wird nunmehr eine solche, entsprechende, jedoch mit radialen Öffnungen vorgesehen, auf der dann die erfindungsgemäße Paßhülse mit den Düsenrohren anzuordnen ist. Anstelle der Beschleunigerdüse zwischen der Flammspritzdüse und der Überwurfhülse an der Frontseite derselben kann nunmehr ein den Ringspalt an seiner Stirnseite verschließender Stirnring vorgesehen werden.The accelerator nozzle in the form of the nozzle tubes is thus radially spaced from the flame or the flame spray nozzle; the nozzle tubes can therefore not be overheated and certainly not melt and thus become unusable. The adapter sleeve with the nozzle tubes sits directly on the union sleeve and thus forms a unit with the result when handling. Separate feed lines, in particular separate feed hoses, are not required, since the accelerator nozzle is fed from the annular gap between the flame spray nozzle and the union sleeve from the base body through the outlet openings there. At the end, where the accelerator nozzle was formerly provided between the flame spray nozzle and the union sleeve, the annular gap can now be closed without outlet openings for the accelerator gas. According to the invention, a powder flame spraying device corresponding to the genus can also be closed be converted to a powder flame spraying device according to the invention. Instead of the previous union sleeve, such a corresponding one, but with radial openings, is now provided, on which the adapter sleeve according to the invention with the nozzle tubes is then to be arranged. Instead of the accelerator nozzle between the flame spray nozzle and the coupling sleeve on the front side of the same, an end ring closing the annular gap on its end side can now be provided.

Nach einer bevorzugten Ausführungsform sind die Überwurfhülse und die Paßhülse zueinander passend zylindrisch ausgebildet, und an der Stirnseite der Überwurfhülse ist ein Vorsprung als Anschlag für die Paßhülse angeordnet, während bei der zu dem Gerätegrundkörper benachbarten Seite der Paßhülse auf der Flammspritzdüse ein Gewinde vorgesehen ist, auf dem mit einem passenden Innengewinde eine Mutter angeordnet ist. Da die Überwurfhülse selbst schon abnehmbar ist, kann von der abgenommenen Überwurfhülse desweiteren die Paßhülse abgenommen werden, indem zunächst die Mutter von derselben abgeschraubt wird. Sodann läßt sich die Paßhülse von der Überwurfhülse abziehen. Auch bei aufgesetzter Überwurfhülse ist diese Ausführungsform praktisch. Denn sofern die Mutter gelockert wird, kann die Paßhülse in beliebiger Weise auf der Überwurfhülse gedreht werden; somit können die Düsenrohre der Paßhülse vom Benutzer nach belieben gedreht und entsprechend ausgerichtet werden.According to a preferred embodiment, the coupling sleeve and the fitting sleeve are designed to be cylindrical to match one another, and a projection is arranged on the end face of the coupling sleeve as a stop for the fitting sleeve, while a thread is provided on the flame spray nozzle on the side of the fitting sleeve adjacent to the basic device body a nut is arranged with a suitable internal thread. Since the coupling sleeve itself is already removable, the adapter sleeve can also be removed from the removed coupling sleeve by first unscrewing the nut from the same. Then the adapter sleeve can be pulled off the union sleeve. This embodiment is also practical when the cap sleeve is attached. Because if the nut is loosened, the adapter sleeve can be rotated in any way on the union sleeve; thus the nozzle tubes of the adapter sleeve can be rotated by the user at will and aligned accordingly.

Damit die Paßhülse von der Überwurfhülse abgezogen werden kann und zwar in Richtung auf die zu dem Gerätegrundkörper benachbarte Seite der Paßhülse ist insbseondere der Außendurchmesser des Gewindes und der übrigen Überwurfhülse nicht größer als der Innendurchmesser der Paßhülse.So that the adapter sleeve can be removed from the union sleeve, specifically in the direction of the side of the adapter sleeve adjacent to the main body of the device, the outside diameter of the thread and the remaining union sleeve in particular is not larger than the inside diameter of the adapter sleeve.

Ein Ausführungsbeispiel der Erfindung ist in der nachstehenden Fig. 1 dargestellt. Sie sei im folgenden erläutert.An embodiment of the invention is shown in FIG. 1 below. It is explained below.

Dargestellt ist nicht das komplette Pulverflammspritzgerät, sondern nur ein Teil des Gerätegrundkörpers 1 desselben, an dem die Überwurfhülse 25 mit der Flammspritzdüse 2 angeschlossen ist. Die Flammspritzdüse 2 selbst ist nicht unmittelbar an dem Gerätegrundkörper 1 angeorndet, sondern mit demselben über einen Adapter 26 verbunden. Aus dem Gerätegrundkörper 1 treten eine zentrale Transportgasleitung 3 und Brenngasleitungen 4, 4' aus. Die Brenngasleitungen 4,4' treten dabei durch Steckhülsen 28 aus, die in entsprechende Bohrungen in den Adapter 26 münden. Von dort wird das eigentliche Brenngas, insbesondere Acetylen, in den Brenngasraum 8 geführt, während das andere Brenngas, nämlich das Verbrennungsgas, insbesondere Sauerstoff, in den Sauerstoff-Druckraum 24 gelangt. Von dort aus werden die Gase in an sich bekannter Weise in die eigentliche Flammspritzdüse 2 weitergeleitet, wo sie auch nach dem Injektorprinzip miteinander vermischt werden. Die eigentliche Flammspritzdüse 2 wird auf dem Adapter 26 von der Düsen-Preß-Schraube 18 in an sich bekannter Weise gehalten. Zwischen dem Adapter 26 und der Flammspritzdüse 2 bzw. der Düsen-Preß-Schraube 18 und der Überwurfhülse 25 ist der Ringspalt 11 belassen. In diesem Ringspalt 11 münden die nicht dargestellten Ausblasöffnungen für das Beschleunigergas aus dem Gerätegrundkörper 1. Stirnseitig wird der Ringspalt 11 von dem Stirnring 15 abgeshlossen. Das Transportgas aus der Transportgasleitung 3 wird über eine an sich bekannte Injektordruckdüse 5 in einen entsprechenden, bekannten Injektorspalt 6 geleitet und von dort von der Injektormischdüse 7 in eine zentrale Transportgasleitung des Adapters 26 geführt; von dort gelangt dann das Transportgas mit dem Auftragspulver in eine entsprechende zentrale Leitung in der Flammspritzdüse 2, von wo aus es durch die Pulverbohrungen 29 an der Stirnseite der Flammspritzdüse 2 austritt. Das Brenngasgemisch wird in einem Stern von Brenngasaustrittsbohrungen 16 um diese Pulverbohrungen 29 herum ausgeblasen und entzündet. Die Überwurfhülse 25 besitzt nun im Bereich ihrer Stirnseite radiale Öffnungen 22 durch die aus dem Ringspalt 11 das Beschleunigergas austreten kann. Es gelangt durch diese Öffnungen 22 in den Ringraum 30 der Paßhülse 31. Diese Paßhülse 31 ist somit mit ihrem Ringraum 30 zu den Öffnungen 22 gegenüberliegend auf der Überwurfhülse 25 angeordnet. Zur Dichtheit dieser an sich formschlüssigen Verbindung zwischen der Paßhülse 31 und der Überwurfhülse 25 sind beiderseits der Öffnungen 22 bzw. des Ringraumes 30 O-Ringe 10 zwischen der Überwurfhülse 25 und der Paßhülse 31 vorgesehen. Der Ringraum 30 ist zu den Öffnungen 22 hin offen, wie dargestellt. Stirnseitig sind an der Paßhülse 31 Düsenrohre 20 angesetzt, die in den Ringraum 30 münden. Somit kann aus dem Ringspalt 11 durch die Öffnungen 22 und den Ringraum 30 das Beschleunigergas in die Düsenrohre 20 gelangen. Aus denselben tritt es durch die Druckluftaustritte 14 aus. Die Paßhülse 31 wird an der Stirnseite der Überwurfhülse 25 gegen den Vorsprung 32 gedrückt. Dazu wird sie geräteseitig von der Mutter 9 zur Stirnseite der gesamten Anordnung hin gedrückt. Die Muter 9 besitzt ein Gewinde, das zu dem Gewinde 33 der Überwurfhülse 25 paßt.The complete powder flame spraying device is not shown, but only a part of the basic device body 1 thereof, to which the coupling sleeve 25 with the flame spraying nozzle 2 is connected. The flame spray nozzle 2 itself is not arranged directly on the device body 1, but is connected to the same via an adapter 26. A central transport gas line 3 and fuel gas lines 4, 4 ′ emerge from the basic device body 1. The fuel gas lines 4, 4 'exit through plug-in sleeves 28 which open into corresponding bores in the adapter 26. From there, the actual fuel gas, in particular acetylene, is fed into the fuel gas chamber 8, while the other fuel gas, namely the combustion gas, in particular oxygen, reaches the oxygen pressure chamber 24. From there, the gases are passed on in a manner known per se into the actual flame spray nozzle 2, where they are also mixed with one another according to the injector principle. The actual flame spray nozzle 2 is held on the adapter 26 by the nozzle press screw 18 in a manner known per se. The annular gap 11 is left between the adapter 26 and the flame spray nozzle 2 or the nozzle press screw 18 and the coupling sleeve 25. The blow-out openings (not shown) for the accelerator gas from the device base body 1 open into this annular gap 11. The annular gap 11 is closed off at the end by the end ring 15. The transport gas from the transport gas line 3 is passed via a known injector pressure nozzle 5 into a corresponding, known injector gap 6 and from there it is led from the injector mixing nozzle 7 into a central transport gas line of the adapter 26; from there the transport gas with the application powder then reaches a corresponding central line in the flame spray nozzle 2, from where it exits through the powder bores 29 on the end face of the flame spray nozzle 2. The fuel gas mixture is blown out and ignited in a star of fuel gas outlet bores 16 around these powder bores 29. The union sleeve 25 now has radial openings 22 in the region of its end face through which the accelerator gas can escape from the annular gap 11. It passes through these openings 22 into the annular space 30 of the adapter sleeve 31. This adapter sleeve 31 is thus arranged with its annular space 30 opposite to the openings 22 on the union sleeve 25. To seal this inherently positive connection between the adapter sleeve 31 and the union sleeve 25, O-rings 10 are provided on both sides of the openings 22 and the annular space 30 between the union sleeve 25 and the adapter sleeve 31. The annular space 30 is open to the openings 22, as shown. On the end face 31 nozzle tubes 20 are attached to the adapter sleeve, which open into the annular space 30. Thus, the accelerator gas can reach the nozzle tubes 20 from the annular gap 11 through the openings 22 and the annular space 30. It emerges from the same through the compressed air outlets 14. The adapter sleeve 31 is pressed against the projection 32 on the end face of the union sleeve 25. For this purpose, it is pressed on the device side by the nut 9 towards the end face of the entire arrangement. The nut 9 has a thread that matches the thread 33 of the union sleeve 25.

Der in dieser Figur dargestellte Querschnitt betrifft eine Ausführungsform, bei der die Überwurfhülse 25 und die Paßhülse 31 zueinander passend zylindrisch ausgebildet sind. Der Querschnitt ist durch die zentrale Transportgasleitung 3 gelegt, wie offensichtlich.The cross section shown in this figure relates to an embodiment in which the coupling sleeve 25 and the fitting sleeve 31 are designed to be cylindrical to match one another. The cross section is through the central transport gas line 3, as is obvious.

Fig. 2 zeigt eine besondere Weiterbildung des Pulverflammspritzgerätes, wobei der Einfachheit halber nur der vordere Teil der Paßhülse 31 mit der Flammspritzdüse 2 dargestellt ist. Die mit der Ausführungsform gemäß Fig. 1 übereinstimmenden Bauteile tragen die gleichen Bezugszeichen und werden hier nicht weiter erläutert. Die Paßhülse 31 ist in einer gegenüber Fig. 1 um 90 Winkelgrad bezüglich der Längsachse 38 gedrehten Position dargestellt. Im Bereich der Stirnfläche 39 sind zwei einander diametral gegenüberliegende Kühldüsen 34 vorgesehen, die einerseits in den mit Druckluft versorgten Ringraum 30 münden und die andererseits nach vorn über die Stirnfläche 39 hinausragen. Die Düsenrohre 20 sind zur Längsachse 38 abgewinkelt, während die Kühldüsen 34 gerade ausgebildet sind und mit ihren vorderen Enden das Düsenrohr 20 in einem vorgegebenen Abstand 40 überragen. Die beiden bereits erläuterten abgewinkelten Düsenrohre 20 sind erfindungsgemäß als Beschleunigerdüsen wirksam.FIG. 2 shows a special development of the powder flame spraying device, only the front part of the adapter sleeve 31 with the flame spray nozzle 2 being shown for the sake of simplicity. The one with the 1 corresponding components have the same reference numerals and are not explained here. The adapter sleeve 31 is shown in a position rotated by 90 angular degrees with respect to the longitudinal axis 38 relative to FIG. 1. In the area of the end face 39, two diametrically opposite cooling nozzles 34 are provided, which on the one hand open into the annular space 30 supplied with compressed air and on the other hand protrude forward over the end face 39. The nozzle tubes 20 are angled to the longitudinal axis 38, while the cooling nozzles 34 are straight and project with their front ends of the nozzle tube 20 at a predetermined distance 40. The two angled nozzle tubes 20 which have already been explained are effective according to the invention as accelerator nozzles.

Um eine Überhitzung der Spritzschicht, und zwar vor allem bei dünnwandigen Teilen, zu vermeiden, sind in dieser wesentlichen Ausführungsform die beiden Kühldüsen 34 vorgesehen. Im Rahmen der Erfindung kann ggfs. auch nur eine einzige Kühldüse 34 vorgesehen sein oder es können darüberhinaus auch noch weitere Kühldüsen angeordnet werden. Hierdurch wird in überraschend einfacher Weise sichergestellt, daß eine Überhitzung der Spritzschicht Infolge der Temperatureinstrahlung in das zu beschichtende Werkstück zuverlässig unterbunden wird.In order to avoid overheating of the spray layer, especially in the case of thin-walled parts, the two cooling nozzles 34 are provided in this essential embodiment. Within the scope of the invention, if necessary, only a single cooling nozzle 34 can also be provided, or further cooling nozzles can also be arranged. This ensures, in a surprisingly simple manner, that overheating of the spray layer is reliably prevented as a result of the temperature radiation into the workpiece to be coated.

Die Kühldüse 34 ist bevorzugt auswechselbar. Dies kann insbesondere mittels eines Außengewindes 36 realisiert werden, mit . welchem die Kühldüse 34 in ein entsprechendes Innengewinde 37 der Paßhülse 31 eingeschraubt ist. Je nach Einsatzbedingungen kann bei Bedarf die Kühldüse 34 entfernt werden und die Gewindebohrung der Paßhülse 31 mittels eines Verschlußstopfens oder dergleichen im Rahmen dieser Erfindung abgedichtet werden; in diesem Falle ist das an Hand von Fig. 2 erläuterte Gerät in Funktion und Wirkungsweise identisch mit dem gemäß Fig. 1. Sowohl die Beschleunigerdüsen bzw. die Düsenrohre 20 als auch die Kühldüsen 34 werden erfindungsgemäß gemeinsam durch die Öffnung 22 und den Ringraum 30 mit Beschleunigergas, insbesondere Druckluft, beschickt. Zusätzliche Versorgungsanschlüsse oder dergleichen für die Kühldüsen entfallen aufgrund der Integration von Kühldüsen 34 und Düsenrohren 20 in die Paßhülse 31.The cooling nozzle 34 is preferably exchangeable. This can be achieved in particular by means of an external thread 36 with. which the cooling nozzle 34 is screwed into a corresponding internal thread 37 of the adapter sleeve 31. Depending on the conditions of use, the cooling nozzle 34 can be removed if necessary and the threaded bore of the adapter sleeve 31 can be sealed by means of a sealing plug or the like in the context of this invention; in this case, the device explained with reference to FIG. 2 is identical in function and mode of operation to that according to FIG. 1. Both the accelerator nozzles or the nozzle tubes 20 and the cooling nozzles 34 are, according to the invention, together through the opening 22 and the annular space 30 Accelerator gas, especially compressed air, is fed. Additional supply connections or the like for the cooling nozzles are dispensed with due to the integration of cooling nozzles 34 and nozzle tubes 20 in the adapter sleeve 31.

Die Kühldüsen 34 können auch so im Kopf eingebaut sein, daß sie mit jedem beliebigen Medium, das in den Gaszustand übergehen kann, von außen gespeist werden können, beispielsweise mit flüssigem Stickstoff oder mit flüssigem Kohlendioxid, wodurch eine noch wesentlich intensivere Kühlwirkung auf dem Substrat erreichbar ist.The cooling nozzles 34 can also be installed in the head in such a way that they can be fed from the outside with any medium which can change to the gas state, for example with liquid nitrogen or with liquid carbon dioxide, so that an even more intensive cooling effect on the substrate can be achieved is.

An der Ausgangsöffnung 35 können ferner gegebenenfalls spezielle Düsen eingesetzt sein, beispielsweise kugelgelagerte Düsen, die es erlauben, die Austrittsrichtung des Kühlmediums beliebig zu steuern.Special nozzles, for example ball-bearing nozzles, which allow the direction of exit of the cooling medium to be controlled as desired, may also be used at the outlet opening 35.

ZeichenerklärungExplanation of symbols

  • 1 Gerätegrundkörper1 device body
  • 2 Flammspritzdüse2 flame spray nozzle
  • 3 Transportgasleitung3 Transport gas line
  • 4, 4' Brenngasleitung4, 4 'fuel gas line
  • 5 Injektordruckdüse5 injector pressure nozzle
  • 6 Injektorspalt6 injector gap
  • 7 Injektormischdüse7 injector mixing nozzle
  • 8 Brenngasraum8 fuel gas chamber
  • 9 Mutter9 mother
  • 10 0-Ring10 0-ring
  • 11 Ringspalt11 annular gap
  • 12 Brennkopf-Druckluftraum12 Combustion head compressed air room
  • 14 Druckluftaustritt14 compressed air outlet
  • 15 Stirnring15 front ring
  • 16 Brenngasaustrittsbohrung16 fuel gas outlet bore
  • 18 Düsen-Preß-Schraube18 nozzle press screw
  • 20 Düsenrohr20 nozzle tube
  • 22 Öffnung22 opening
  • 24 Sauerstoff-Druckraum24 oxygen pressure chamber
  • 25 Überwurfhülse25 union sleeve
  • 26 Adapter26 adapters
  • 28 Steckhülse28 receptacle
  • 29 Pulverbohrung29 Powder drilling
  • 30 Ringraum30 annulus
  • 31 Paßhülse31 fitting sleeve
  • 32 Vorsprung32 head start
  • 33 Gewinde33 threads
  • 34 Kühldüse34 cooling nozzle
  • 35 Öffnung in 3435 opening in 34
  • 36 Außengewinde von 3436 external threads of 34
  • 37 Innengewinde von 3137 internal thread from 31
  • 38 Längsachse38 longitudinal axis
  • 39 Stirnfläche39 end face
  • 40 Abstand40 distance

Claims (8)

1. Powder flame sprayer consisting of a main body (1), on which is arranged a flame spraying nozzle (2) with a special accelerator nozzle at its front end, which is supplied with accelerator gas by the main body, discharge openings connected to an annular gap (11) between the flame spraying nozzle (2) and a detachable retaining sleeve (25) being provided for this purpose on the main body,
in which
radial openings (22) are provided in the retaining sleeve (25) opposite an annular space (30) of an adapter sleeve (31), which is arranged on the retaining sleeve (25) and has nozzle tubes (20) directed to the front end of the flame spraying nozzle (2) and connected by the annular space (30) to the annular gap (11).
2.Powder flame sprayer according to claim 1,
in which
the retaining sleeve (25) and adapter sleeve (31) are of cylindrical design and match each other, a projection (32) is arranged as a stop for the adapter sleeve (31) on the front end of the retaining sleeve (25), and a thread (33), on which a nut (9) with a matching internal thread is arranged, is provided on the side of the adapter sleeve (31) adjacent to the main body (1) on the flame spraying nozzle (2).
3. Powder flame sprayer according to claim 2,
in which
the outside diameter of the thread (33) and the rest of the adapter sleeve (31) is not greater than the inside diameter of the adapter sleeve (31).
4. Powder flame sprayer according to one of claims 1 to 3,
in which
the adapter sleeve (31) has at least one cooling nozzle (34), which is arranged near the front end of the flame spraying nozzle (2) and terminates in the annular space (30).
5. Powder flame sprayer according to claim 4,
in which
the front end of the nozzle (34) projects a predetermined distance (40) beyond the nozzle tube (20).
6. Powder flame sprayer according to claim 4 or 5,
in which
the opening (35) of the cooling nozzle (34) is a greater distance from the longitudinal axis (38) than the compressed-air outlet (14) of the nozzle tube (20), the cooling nozzle (34) preferably being straight and the nozzle tube (20) preferably being at an angle to the longitudinal axis (38).
7. Powder flame sprayer according to one of claims 4 to 6,
in which
the cooling nozzle (34) is arranged interchangeably in the adapter sleeve (31), in particular by an external thread (36) in an internal thread (37) of the adapter sleeve (31).
8. Powder flame sprayer according to one of claims 4 to 7,
in which
nozzle tubes (20) and cooling nozzles (34) are distributed uniformly over the periphery near the front area (39) of the adapter sleeve (31), in particular two nozzle tubes (20) and two cooling nozzles (34) each being installed alternately at distances of 90°.
EP84113717A 1983-11-19 1984-11-14 Powder flame spray device with an accelerator nozzle Expired EP0142816B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113717T ATE39222T1 (en) 1983-11-19 1984-11-14 POWDER SPRAY UNIT WITH ACCELERATOR NOZZLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8333305U 1983-11-19
DE8333305 1983-11-19

Publications (3)

Publication Number Publication Date
EP0142816A2 EP0142816A2 (en) 1985-05-29
EP0142816A3 EP0142816A3 (en) 1986-03-26
EP0142816B1 true EP0142816B1 (en) 1988-12-14

Family

ID=6759072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113717A Expired EP0142816B1 (en) 1983-11-19 1984-11-14 Powder flame spray device with an accelerator nozzle

Country Status (3)

Country Link
EP (1) EP0142816B1 (en)
AT (1) ATE39222T1 (en)
DE (1) DE3475600D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964568A (en) * 1989-01-17 1990-10-23 The Perkin-Elmer Corporation Shrouded thermal spray gun and method
CA2119430A1 (en) * 1993-04-20 1994-10-21 Joseph P. Mercurio Dense oxide coatings by thermal spraying
DE19742619C1 (en) * 1997-09-26 1999-01-28 Siemens Ag Method and apparatus for introducing powdery solids or liquids into an inductively coupled plasma
DK2574408T3 (en) * 2011-09-30 2018-06-06 Air Liquide Process and apparatus for supplying a refrigerant stream

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR859917A (en) 1939-06-05 1941-01-02 Metallisation Soc Nouv Method and devices for ensuring the execution of waterproof and homogeneous metallic coatings using a metallizer gun
US2544259A (en) 1944-11-25 1951-03-06 Duccini Gaetano Metallizing spray gun
US3344992A (en) 1964-01-27 1967-10-03 Edward O Norris Spray gun
DE3103753A1 (en) 1980-04-14 1981-12-17 Eutectic Corp., 11358 Flushing, N.Y. EXTENSION PIECE FOR A FLAME SPRAY BURNER
EP0052821A1 (en) 1980-11-26 1982-06-02 The Perkin-Elmer Corporation Flame spraying device with rocket acceleration

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1084684A (en) * 1953-06-10 1955-01-21 Metallisation Soc Nouv Metal torch or gun
US3085750A (en) * 1960-12-29 1963-04-16 Metallizing Company Of America Molten material spray gun with laterally deflecting air cap
US3455510A (en) * 1966-11-14 1969-07-15 Metco Inc Nozzle and gas mixing arrangement for powder type flame spray gun
CA982237A (en) * 1971-07-06 1976-01-20 Derek J. Angier Method and apparatus for projecting materials into an arc discharge
US4308996A (en) * 1980-03-17 1982-01-05 Eutectic Corporation Adjustable head for selectively shaping a flame-spray discharge
DE3024339A1 (en) * 1980-07-02 1982-01-21 NPK za Kontrolno-Zavaračni Raboti, Sofija PLASMATRON FOR METAL WORKING IN AIR AND UNDERWATER

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR859917A (en) 1939-06-05 1941-01-02 Metallisation Soc Nouv Method and devices for ensuring the execution of waterproof and homogeneous metallic coatings using a metallizer gun
US2544259A (en) 1944-11-25 1951-03-06 Duccini Gaetano Metallizing spray gun
US3344992A (en) 1964-01-27 1967-10-03 Edward O Norris Spray gun
DE3103753A1 (en) 1980-04-14 1981-12-17 Eutectic Corp., 11358 Flushing, N.Y. EXTENSION PIECE FOR A FLAME SPRAY BURNER
EP0052821A1 (en) 1980-11-26 1982-06-02 The Perkin-Elmer Corporation Flame spraying device with rocket acceleration

Also Published As

Publication number Publication date
ATE39222T1 (en) 1988-12-15
EP0142816A3 (en) 1986-03-26
EP0142816A2 (en) 1985-05-29
DE3475600D1 (en) 1989-01-19

Similar Documents

Publication Publication Date Title
DE1725022C3 (en) Flame spray gun
EP0192854A1 (en) Spray pistol for coating material
DE19520616C2 (en) Nozzle for an inert gas arc welding machine, an inert gas arc welding machine with a nozzle and a torch therefor
CH702999A1 (en) A device for coating substrates by high-speed flame spraying.
DE69107885T2 (en) Angular gas cap for thermal spray guns.
DE3903887A1 (en) DEVICE FOR FLAME SPRAYING POWDERED MATERIALS BY MEANS OF AUTOGENIC FLAME
WO1990014895A1 (en) Autogenic flame injection apparatus for flame injection of powdered materials or wettable powders
DE3102848C2 (en)
EP0142816B1 (en) Powder flame spray device with an accelerator nozzle
DE808521C (en) Metal spray gun
EP0664161A1 (en) Device for spraying liquids, particularly paints
DE3903888A1 (en) DEVICE FOR FLAME SPRAYING POWDERED MATERIALS
DE829392C (en) Metal spray gun
DE3780916T2 (en) SPRAYING NOZZLE.
DE8333305U1 (en) Powder flame spraying device with accelerator nozzle
DE3918200A1 (en) Autogenous flame spraying equipment for powered materials - has at least two exchangeable elements one with nozzle carrier, the other with gas supply lines
DE3325627A1 (en) GAS BURNER FOR WIRE METAL SPRAYING
EP1291112B1 (en) Torch for welding and/or cutting
DE3234623A1 (en) Screw conveyor
DE3833506C2 (en)
DE3316113A1 (en) SPRAY GUN
CH384745A (en) Inert gas welding device with detachable connection of the torch lines
DE3528749A1 (en) Nozzle support for a metal powder flame gun
DE3216557C1 (en) Plasma-powder surfacing torch
DE3833279A1 (en) FUEL NOZZLE FOR GAS TURBINES

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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RTI1 Title (correction)
17P Request for examination filed

Effective date: 19850911

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17Q First examination report despatched

Effective date: 19870605

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 39222

Country of ref document: AT

Date of ref document: 19881215

Kind code of ref document: T

R20 Corrections of a patent specification

Effective date: 19881117

REF Corresponds to:

Ref document number: 3475600

Country of ref document: DE

Date of ref document: 19890119

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: CASTOLIN S.A.

Effective date: 19890913

NLR1 Nl: opposition has been filed with the epo

Opponent name: CASTOLIN S.A.

ET1 Fr: translation filed ** revision of the translation of the patent or the claims
NLR4 Nl: receipt of corrected translation in the netherlands language at the initiative of the proprietor of the patent
REG Reference to a national code

Ref country code: GB

Ref legal event code: 711B

REG Reference to a national code

Ref country code: GB

Ref legal event code: 711E

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19921002

Year of fee payment: 9

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

Ref country code: LU

Payment date: 19921014

Year of fee payment: 9

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

Ref country code: BE

Payment date: 19921019

Year of fee payment: 9

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

Ref country code: CH

Payment date: 19921021

Year of fee payment: 9

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

Ref country code: FR

Payment date: 19921026

Year of fee payment: 9

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

Ref country code: GB

Payment date: 19921106

Year of fee payment: 9

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

Ref country code: SE

Payment date: 19921117

Year of fee payment: 9

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

Ref country code: NL

Payment date: 19921130

Year of fee payment: 9

Ref country code: DE

Payment date: 19921130

Year of fee payment: 9

EPTA Lu: last paid annual fee
RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 19930629

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 930629

NLR2 Nl: decision of opposition
EUG Se: european patent has lapsed

Ref document number: 84113717.7

Effective date: 19930901

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO