• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device and a method for the thermal spraying of fluids, in particular for high-velocity suspension flame spraying (HVSFS), with a burner in which a combustion chamber (32) is provided, at which an expansion tube discharges a spray jet, with a supply of fuel mixture into the combustion chamber (32), and with an injector (40) for supplying a fluid to be sprayed into the combustion chamber (32) via a nozzle (50) which is replaceably held on the injector (40).
    公开号:CH714521A2
    申请号:CH01552/18
    申请日:2018-12-17
    公开日:2019-06-28
    发明作者:Professor Rainer Gadow Dr；Andreas Killinger Dr；Plachetta Martin；Leis Artur
    申请人:Univ Stuttgart；
    IPC主号:
    专利说明:

    Description: The invention relates to an apparatus and a method for thermal spraying, in particular for high-speed suspension flame spraying (HVSFS). HVSFS is a novel process for producing nanostructured coatings using thermal spraying using supersonic spraying. In this way, very thin, dense and well-adhering layers can be produced, which are particularly ceramic, such as layers consisting of aluminum oxide, titanium oxide or zirconium oxide (see A. Killinger, M. Kuhn, R. Gadow, “High-Velocity Suspension Flame Spraying (HVSFS), a new approach for spraying nanoparticles with hypersonic speed », Surface and Coatings Technology, Voi. 201, Issue 5, October 25, 2006, Pages 1922-1929).
    [0002] DE 10 2005 038 453 A1 discloses the HVSFS method and an apparatus for carrying out this method. Then one or more suspensions can be fed into a combustion chamber via one or more nozzles and accelerated there by means of a fuel mixture via an expansion pipe.
    HVSFS requires processing powders with very small particle sizes in the nanoscale range. The HVSFS does not use active atomization in the prior art. The liquid jet disintegrates in an uncontrolled manner due to turbulence in the combustion chamber.
    From M. Rukosuyev, S.A. Baqar, M.B.G. Jun, "Development and Evaluation of Flame-Assisted Dual Velocity Nonoparticle Coating System, Journal of Micro- and Nano-Manufacturing December 2017, Voi. 5, p. 044 501-1-044 501-5 a method for flame spraying is known in which external atomization is carried out using ultrasound.
    External atomization can, however, already lead to segregation before being fed into the burner. Even with such a method, the problems which exist in the prior art cannot be eliminated, namely in particular an uncontrolled drop disintegration, processes which are difficult to control and spray results, as well as undesirable deposits in the nozzle head with the result of blockages, undesired deposits in the area of the combustion chamber walls, that can peel off during the coating process and can be built into the coating, which affects the layer quality.
    In particular, there is the problem that the nozzle frequently clogs, which leads to the process being interrupted. The burner then has to be disassembled and cleaned in a complex manner.
    Against this background, the invention has for its object to provide an improved device and an improved method for thermal spraying, which is particularly suitable for HVSFS and with which the problems existing in the prior art are at least partially avoided.
    This object is achieved according to the invention by a device for thermal spraying of fluids, in particular for high-speed suspension flame spraying (HVSFS), with a burner in which a combustion chamber is provided, at which an expansion pipe for the exit of a spray jet opens, with a Supply of fuel mixture into the combustion chamber, and with at least one injector for supplying a fluid to be sprayed into the combustion chamber via a nozzle, which is held interchangeably on the injector.
    The object of the invention is completely achieved in this way.
    Since the nozzle can be easily replaced according to the invention, it can be changed quickly in the event of a blockage, so that a coating process only has to be interrupted for a short time. Furthermore, different nozzles can be used, which are adapted to different materials to be sprayed, so that e.g. the injection opening from which the material to be sprayed exits into the combustion chamber of the burner can be suitably adapted.
    Since the HVSFS, depending on the type of material to be sprayed, the material to be sprayed can be present both in the form of a solution and in the form of a suspension, in the context of this application both embodiments are summarized under the generic term “fluid to be sprayed”.
    According to a further embodiment of the invention, the nozzle is attached to the injector by means of a thread, preferably axially adjustable.
    In this way, quick replacement is possible. At the same time, the axial distance between the injection opening of the nozzle and the combustion chamber wall can be adjusted in this way.
    According to a further embodiment of the invention, the nozzle is provided at an outer end of a tube and can be replaced together with it.
    With such an embodiment, a simple replacement of the nozzle is made possible.
    [0016] According to a further embodiment of the invention, the injector has a separate feed for a fluid to be sprayed and for an atomizing gas up to the nozzle.
    In this way, the most controlled possible atomization of the fluid to be sprayed can be ensured.
    According to a further embodiment of the invention, the nozzle has a nozzle chamber which opens into the combustion chamber via an injection opening.
    CH 714 521 A2 [0019] The actual atomization of the fluid to be sprayed takes place in the nozzle chamber. The atomized fluid then reaches the combustion chamber from the nozzle chamber via the injection opening.
    According to a further embodiment of the invention, the injector has at least two coaxial tubes for supplying atomizing gas and fluid to be sprayed to the nozzle.
    In this way, there is a very controlled supply of atomizing gas and fluid to be sprayed to the nozzle.
    [0022] According to a further embodiment of the invention, an inner tube has an outer surface with a structure that supports atomization of the fluid. The fluid to be sprayed preferably reaches the nozzle chamber through the inner tube. In this case, the atomizing gas flowing around the outside in this way generates controlled turbulence, so that uniform atomization results. The fluid to be sprayed can flow through the inner tube and the atomizing gas can flow in the surrounding cavity. Likewise, a reverse arrangement is conceivable with the fluid flowing outside to be sprayed and with the atomizing gas flowing inside.
    According to a further embodiment of the invention, the outer surface of the inner tube has stabilizing elements, which are preferably arranged in a spiral.
    In this way, the medium flowing around the outside is provided with a swirl, so that a particularly uniform and controlled atomization can take place.
    In a further embodiment of the invention, the inner tube is itself provided at its outer end with a preferably conical nozzle opening.
    This also ensures improved mixing or improved atomization of a medium guided in this way.
    According to a further embodiment of the invention, the injector has channels for a separate supply of a first fluid, a second fluid and an atomizing gas.
    In this way, a first fluid to be sprayed and a second fluid to be sprayed can only be mixed in the nozzle. This is particularly advantageous for those fluids which are difficult to mix or which react with one another or have an adverse effect in some other way.
    [0029] According to a further embodiment of the invention, the injector is detachably held on the burner, in particular by means of a thread or a quick-release fastener.
    In this way, the injector, which is used exclusively for supplying, atomizing and injecting the fluid to be sprayed into the combustion chamber, can be easily released and pulled out of the burner to the rear. This makes it easy to replace the injector or to replace the nozzle.
    The nozzle is preferably made of brass or stainless steel. The tubes and the associated parts, through which atomizing gas and the fluid or fluids to be sprayed are passed, are preferably made of stainless steel. The gas mixing block is preferably made of copper.
    According to a further embodiment of the invention there is at least one channel for supplying fluid made of plastic, in particular PTFE, or ceramic or is coated with plastic or ceramic at least on its inner surface.
    In this way, fluids which are sensitive to metallic lines, which react with them or are adversely affected in some other way, can be conducted without problems to the nozzle in which the atomization and injection into the combustion chamber takes place.
    [0034] According to a further embodiment of the invention, the internal channel for supplying fluid to be sprayed can be driven in rotation.
    In this way, an even better and more uniform atomization of the fluid to be sprayed can be ensured.
    [0036] According to a further embodiment of the invention, a heat shield is provided between the nozzle and the combustion chamber.
    This has the advantage that the heating of the nozzle is reduced, which counteracts the formation of deposits in the nozzle.
    [0038] According to a further embodiment of the invention, the burner has a gas mixing block cooled by means of a cooling medium, in particular water or compressed air.
    In this way, premixed fuel can be fed into the combustion chamber and at the same time the thermal load on the burner can be reduced.
    CH 714 521 A2 According to a further embodiment of the invention, the heat shield has an annular shield made of ceramic in the region of the combustion chamber end of the nozzle, which has a thermally conductive annular structure, preferably in the form of a pressed-in copper ring, with the cooled gas mixing block of the burner connected is. This results in a simple assembly of the heat shield with a very high effectiveness.
    Although usually only one injector is provided, via which the material to be thermally sprayed is injected into the combustion chamber, several injectors can in principle also be provided for special purposes, e.g. Two or more injectors can be interchangeably received in assigned bores of a common outer tube.
    The invention is further achieved by a method for thermal spraying, in particular by means of high-speed suspension flame spraying (HVSFS), in which a fluid to be sprayed and an atomizing gas are fed separately into a nozzle of an injector, mixed there and ejected into a combustion chamber , in which the material to be sprayed is accelerated by means of a burning fuel mixture through an expansion tube in order to coat an object.
    With such a method, a controlled supply and atomization of a fluid to be sprayed and thus a controlled process during thermal spraying can be ensured.
    According to a further embodiment of the method according to the invention, a plurality of fluids to be mixed are fed separately into the nozzle and atomized there by means of an atomizing gas.
    In this way, different fluids which are difficult to mix with one another, or which react with one another or adversely affect one another in some way, can be processed together and thermally sprayed.
    According to a further embodiment of the invention, at least one fluid, in particular a fluid that is sensitive or unstable to metallic surfaces, is fed into the nozzle via a plastic channel or ceramic channel or a channel coated with plastic or ceramic.
    In this way, fluids that are sensitive to metallic channels or are unstable or reactive can be processed.
    According to a further embodiment of the method, two or more fluids which are unstable or reactive with one another are fed into the nozzle in separate channels and atomized by means of atomizing gas.
    According to a further embodiment of the method, the atomization of the at least one fluid is supported by swirl-generating structures on the outer surface of a channel, via which the fluid to be sprayed is supplied, and / or by a rotating drive of the channel.
    In this way, a particularly good and homogeneous atomization of the fluid to be sprayed is ensured even with very difficult to atomize fluids.
    It goes without saying that the features of the invention mentioned above and those yet to be explained below can be used not only in the combination indicated in each case, but also in other combinations or on their own without departing from the scope of the invention.
    Further features and advantages of the invention will become apparent from the following description of preferred exemplary embodiments with reference to the drawing. It shows:
    Figure 1 shows an inventive device for thermal spraying in a schematic representation.
    FIG. 2 shows a longitudinal view of the burner according to FIG. 1;
    3 shows an enlarged section through the burner according to FIG. 2 along the line III-III;
    FIG. 4 shows an enlarged illustration of the detail IV according to FIG. 3;
    FIG. 5 shows an enlarged illustration of the detail V according to FIG. 3;
    FIG. 6 shows a longitudinal view of the injector according to FIG. 3;
    7 shows a longitudinal section through the injector according to FIG. 6;
    8 shows an enlarged illustration of detail VIII in the region of the tip of the injector;
    9 shows an alternative embodiment of the nozzle with three mutually axial channels for the supply of atomizing gas and two fluids to be sprayed;
    10 shows a partial section of the front area of the nozzle and the surrounding gas mixing chamber with the additional arrangement of a heat shield;
    11 is an enlarged perspective view of the outside of the nozzle;
    CH 714 521 A2
    12 shows a cut-away perspective view of the nozzle with an additional indication of the inner tube with swirl-generating structures at the outer end and with a nozzle opening on the inner tube;
    FIG. 13 shows a photo of the tube according to FIG. 12;
    14 shows a photo of a tube with a modified, outer swirl-producing structure;
    15 shows a schematic illustration of the nozzle in the region of its end on the combustion chamber side with a first configuration in which the fluid to be atomized is guided inside and the atomizing gas in the outer channel;
    FIG. 16 shows a representation according to FIG. 15 with the fluid and atomizing gas being reversed;
    17 shows a modified version of the burner according to FIGS. 3 and
    18 is an enlarged view of detail XVIII according to FIG. 17.
    In Fig. 1, a schematic representation of a device according to the invention is generally designated by the number 10. The device 10 has a burner 30 which is supplied with a suspension or a solution to be sprayed (referred to overall as the fluid to be sprayed) via a changeover valve 26. The burner 30 also has a fuel gas line 16 for supplying fuel gas (in the present case ethene) and an oxidizing agent 18 (in the present case oxygen). The burner 30 is also provided with water cooling and for this purpose has a cooling water inlet 12 and a cooling water outlet 14. The suspension to be sprayed is located in a container 20. A flushing medium is located in a container 22. The suspension to be sprayed is fed to the burner 30 via the valve 26 by means of the feed pump 24. The burner 30 and the supply of suspension (fluid to be sprayed) are controlled by a central controller 28, preferably a PLC controller. Usually, the burner 30 is received on a robot arm (not shown) which is controlled by the central controller 28. Fig. 2 shows the burner 30 in a longitudinal view.
    Further details of the burner 30 can be seen from the enlarged longitudinal section according to FIG. 3.
    The burner 30 has a combustion chamber 32, to which an expansion pipe 34 connects. Premixed fuel mixture is fed into the combustion chamber 32 via a gas mixing block 38. The fluid to be sprayed is supplied via an injector 40, which is detachably attached to the rear of the housing 36 of the burner 30. The injector 40 extends to the combustion chamber 32 with a nozzle at its front end.
    At the rear end of the housing 36 facing away from the combustion chamber 32, the connections 44 and 46 for the fuel gas and oxygen can also be seen in FIG. 3. At its rear end, the injector 40 also has connections 12, 14 for the cooling water supply and the cooling water outlet. Fluid to be sprayed is fed via an end 56 into the central channel of the injector 40, as indicated by the arrow 43. Furthermore, a connection 42 for the supply of atomizing gas can be seen in FIG. 3.
    In the HVSFS shown here, the fluid to be sprayed, as will be explained in detail below, is supplied via the injector 40, mixed with atomizing gas in the nozzle and injected into the combustion chamber 32 in a controlled manner. The fuel mixture premixed into the combustion chamber 32 via the gas mixing block 38 ignites, melts the atomized fluid injected into the combustion chamber and leads to the exit of a heated jet through the expansion pipe 34 at supersonic speed.
    The combustion chamber end of the injector 40 with the nozzle 50 can be seen from the detail according to FIG. 4. The atomized fluid to be sprayed emerges from the nozzle 50 via the injection opening 52 into the combustion chamber 32. With 48 the outlets for the fuel mixture, which is premixed in the gas mixing block 38, are designated. The outlets for the fuel gas mixture 48 are arranged in a ring shape around the injection opening 52.
    Fig. 5 shows an enlarged view in the area of the rear end of the housing 36. At the rear end of the housing 36, a quick release 54 is provided, with the aid of which the injector 40 can be fixed or released by means of two spring bolts projecting outwards with a handle can. If the injector 40 is released, it can be pulled out of the burner 40 completely to the rear.
    6 and 7 show an enlarged view of the injector 40 in longitudinal view and in longitudinal section.
    8 shows the closer structure of the injector 40 in the region of the nozzle. The injector 40 has the nozzle 50 at its outer end. The nozzle 50 is screwed to an outer tube 55 of the injector 40 via a thread 58. The fluid to be sprayed is fed via a central pipe 64 into a nozzle chamber 62 of the nozzle 50. Atomizer gas is supplied via a tube 66 coaxial with the central tube 64. Controlled atomization of the fluid to be sprayed takes place in the region of the mouth of the central tube 64. The nozzle 50 is sealed off from the coaxial tube 66 via an O-ring 60, which is received in an associated annular groove. By rotating the nozzle 50, it can be adjusted in the axial direction towards the combustion chamber 32.
    CH 714 521 A2 Compared to the combustion chamber 32, the nozzle 50, which is preferably made of brass, is shielded by a heat shield 70, as shown schematically in FIG. 10. A heat shield in the form of a ceramic ring 72, consisting of aluminum oxide, for example, is arranged in front of the end face of the nozzle 50 on the combustion chamber side. A copper ring 74 pressed into the outer end of the gas mixing block 38 is used for fixing. While the ceramic ring 72 is used for heat shielding, the copper ring 74 leads to heat dissipation in the water-cooled gas mixing block 38. Alternatively, the copper ring 74 could also be made in one piece with a gas mixing block 38 made of copper be trained.
    Fig. 9 shows a modification of the nozzle, which is designated overall by 50a. Here, a further channel for supplying a second fluid to be sprayed is additionally arranged coaxially. An inner tube 64, in which an inner channel 65 is provided, a central tube 66 coaxial therewith with an annular central channel 67 and an outer tube 68 thus open into the nozzle 50a, as a result of which an outer annular channel 69 is defined. The inner channel 65 can be used to supply the first fluid, the middle channel 67 to supply the second fluid and the outer channel 69 to supply atomizing gas. In principle, however, another arrangement is also conceivable, as will be described in more detail below with reference to FIGS. 15 and 16.
    It goes without saying that further, preferably coaxial, pipes can also be provided for the supply of further fluids to be sprayed.
    11 shows an enlarged perspective exterior view of the nozzle 50. At the outer, combustion chamber end of the nozzle 50 there are two flats 76 which are parallel to one another, so that the nozzle 50 can be easily adjusted or removed by means of a wrench. 11 also shows the injection opening 52 at the end on the combustion chamber side and the thread 58.
    The supply of the fluid to be sprayed via the central channel 64 into the nozzle chamber 62 can be seen from the illustration according to FIG. 12. The fluid to be sprayed is fed via the central tube 64 through a separate conically tapering nozzle opening 79 into the nozzle chamber 62. A structure 78 is applied to the nozzle-side end of the central tube 64 by means of SLM (selective laser melting) or 3D metal printing method. The structure 78 provides the medium flowing around with a swirl pulse, so that improved atomization and a more controlled process result.
    13 shows a photo of such a structure 78 at the front end of the central tube 64.
    A slightly modified embodiment of such a structure is shown in FIG. 14 and is designated overall by the number 78a. The nozzle-side end of the pipe 64 with its outlet opening can also be seen here.
    15 and 16 it is shown schematically that in the nozzle 50 the atomizing gas can either be led through the outer channel 67, as indicated by the dashed arrow 80, and the fluid to be sprayed through the inner channel 65 is performed, as indicated by arrow 81.
    Alternatively, the arrangement can also be reversed by passing the atomizing gas through the inner channel 65, as indicated by the dashed arrow 83, and passing the fluid to be sprayed through the outer channel 67, as through the extended arrow 82 is indicated. In any case, in the region of the exit end of the inner channel 65 in the nozzle chamber 62, the fluid is atomized, which then exits into the combustion chamber 32 via the injection opening 52.
    If materials are to be thermally sprayed which are sensitive to metals, react with them or are adversely affected in some other way, the lines concerned can also be made of plastic (in particular PTFE) or ceramic or at least coated on their inner surface with plastic or ceramic his.
    In this way, it is now possible to now process substances that could not be thermally sprayed due to their sensitivity to metals.
    Furthermore, fluids that are unstable can be atomized in a controlled manner, since the fluid and the atomizing gas are supplied separately to the nozzle.
    A still further improvement in atomization can be achieved in that the inner tube 64 is driven in rotation. In this case, the fluid to be sprayed is passed through the inner tube 64.
    17 and 18 show an example of such an embodiment. Here, the burner 30a is provided with a correspondingly modified injector 40a. According to the detail shown in FIG. 18, a rotary drive 80 is provided in the region of the outer end of the inner tube 64, which rotatably drives the inner tube 64 via a motor 82 and a gear 84.
    权利要求:
    Claims (20)
    [1]
    claims
    1. Device for the thermal spraying of fluids, in particular for high-speed suspension flame spraying (HVSFS), with a burner (30, 30a), in which a combustion chamber (32) is provided, at which an expansion pipe (34) opens for the discharge of a spray jet, with a supply of fuel mixture into the combustion chamber
    CH 714 521 A2 (32), and with at least one injector (40, 40a) for supplying a fluid to be sprayed into the combustion chamber (32) via a nozzle (50, 50a) which is held interchangeably on the injector (40, 40a) ,
    [2]
    2. Device according to claim 1, in which the nozzle (50, 50a) is fastened to the injector (40, 40a) by means of a thread (58), preferably axially adjustable.
    [3]
    3. Apparatus according to claim 1 or 2, wherein the nozzle (50, 50a) is provided at an outer end of a tube (55, 64, 66, 68) and can be replaced together with this.
    [4]
    4. Device according to one of claims 1 to 3, wherein the injector (40, 40a) has a separate feed for a fluid to be sprayed and for an atomizing gas to the nozzle (50, 50a).
    [5]
    5. Device according to one of the preceding claims, wherein the nozzle (50, 50a) has a nozzle chamber (62) which opens into the combustion chamber (32) via an injection opening (52).
    [6]
    6. Device according to one of the preceding claims, wherein the injector (40, 40a) has at least two coaxial tubes (64, 66, 68) for supplying atomizing gas and fluid to be sprayed to the nozzle (50, 50a).
    [7]
    7. The apparatus of claim 5 or 6, wherein an inner tube (64) has an outer surface with a structure (78, 78a) that supports atomization of the fluid to be sprayed.
    [8]
    8. The device according to claim 7, wherein the outer surface of the inner tube (64) has a structure (78, 78a) with stabilizing elements, which are preferably arranged spirally.
    [9]
    9. Device according to one of claims 3 to 8, wherein the injector (40, 40a) channels (65, 67, 69) for separate supply of a first fluid, at least a second fluid and an atomizing gas.
    [10]
    10. Device according to one of the preceding claims, wherein the injector (40, 40a) is detachably held on the burner (30, 30a), in particular by means of a thread or a quick-release fastener (44).
    [11]
    11. Device according to one of the preceding claims, in which at least one channel (65, 67, 69) for supplying fluid consists of plastic, in particular PTFE, or ceramic or is coated with plastic or ceramic at least on its inner surface.
    [12]
    12. Device according to one of the preceding claims, in which the inner tube (64) for the supply of fluid to be sprayed can be driven in rotation.
    [13]
    13. Device according to one of the preceding claims, in which a heat shield (70) is provided between the nozzle (50, 50a) and the combustion chamber (32).
    [14]
    14. Device according to one of the preceding claims, wherein the burner (30, 30a) has a gas mixing block (38) cooled by means of a cooling medium.
    [15]
    15. The apparatus of claim 14, wherein the heat shield (70) has an annular shield (72) made of ceramic in the region of the combustion chamber end of the nozzle (50, 50a), which has a thermally conductive, annular structure (74), preferably in shape of a pressed-in copper ring, is connected to the cooled gas mixing block (38) of the burner (30, 30a).
    [16]
    16. A method for thermal spraying, in particular by means of high-speed suspension flame spraying (HVSFS), in particular with a device (10) according to one of the preceding claims, in which a fluid to be sprayed and an atomizing gas separately into a nozzle (50, 50a) of an injector ( 40, 40a), mixed there and ejected into a combustion chamber (32), in which they are accelerated by means of a burning fuel mixture through an expansion tube (34) in order to coat an object.
    [17]
    17. The method according to claim 16, in which several fluids to be mixed are separately fed into the nozzle (50, 50a) and atomized there by means of atomizing gas.
    [18]
    18. The method according to claim 16 or 17, in which at least one fluid, in particular a fluid sensitive or unstable to metallic surfaces, via a channel (65, 67, 69) made of plastic or ceramic or a channel coated with plastic or ceramic (65, 67, 69) is fed into the nozzle (50, 50a).
    [19]
    19. The method according to any one of claims 16 to 18, wherein a plurality of fluids, which are unstable or reactive with each other, fed into separate channels (65, 67, 69) into the nozzle (50, 50a) and atomized by means of atomizing gas.
    [20]
    20. The method according to any one of claims 16 to 19, wherein the atomization of the at least one fluid by swirl-generating structures (78, 79) on the outer surface of a tube (64, 66), via which the fluid is supplied, and / or by a rotating drive of the channel (64) is supported.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1369498B1|2004-12-22|Method and apparatus for high-speed flame spraying
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    DE3929960A1|1990-03-15|NOZZLE FOR A PLASMA BURNER AND METHOD FOR INPUTING A POWDER INTO THE PLASMA FLAME OF A PLASMA BURNER
    DE2541927C3|1979-12-13|Atomizing nozzle
    DE3106962C2|1986-12-04|Two-substance atomizing nozzle
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    DE102006019643A1|2007-10-31|Workpiece e.g. metallic workpiece, coating method, involves discharging gas flowing with initial speed in main stream to pipe based on individual pressure connection, and collecting powder gas mixture at supply-sided end of pipe
    DE102005038453B4|2011-06-09|Method and device for thermal spraying of suspensions
    DE2308470C3|1981-08-06|Flat flame burners for a heavy liquid fuel
    DE2757522C2|1979-11-22|Round or ring jet nozzle for generating and blasting a mist or aerosol for coating objects
    DE2209896C2|1986-07-17|Atomization process for liquid coating materials to be deposited and apparatus for carrying out the atomization process
    CH714521A2|2019-06-28|Apparatus and method for thermal spraying of fluids, in particular for high-speed suspension flame spraying.
    DE3117715C2|1985-07-18|Powder coating device
    EP3559301B1|2021-06-30|Nozzle construction for thermal spraying by means of a suspension or a precursor solution
    DE4002787A1|1991-08-01|Water and abrasive mixer for surface cleaning - has inclined inlet for air and abrasive reduced in diameter to accelerate mixture
    EP0565814B1|1996-03-27|Burner torch for pulverising a coal-water suspension
    DE102004029679A1|2005-12-29|Injection nozzle especially for introducing of urea into exhaust gas of internal combustion engine has nozzle cap with several orifices, with ratio of orifice diameter to orifice length being greater than 1
    DE829392C|1952-01-24|Metal spray gun
    DE2147042A1|1972-04-06|Atomizers, especially for oil burners
    DE1551648A1|1970-06-18|Atomizing burner
    DE102006022282A1|2007-11-15|Cold spray gun
    DE10207525A1|2003-09-04|Cold gas spraying device for forming coatings comprises a powder tube having a chamfer in the region of the sprayed particles outlet for injecting sprayed particles into a gas stream
    同族专利:
    公开号 | 公开日
    DE102017130744A1|2019-06-27|
    FR3076838A1|2019-07-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102005038453B4|2005-08-03|2011-06-09|TTI-Technologie-Transfer-Initiative GmbH an der Universität Stuttgart|Method and device for thermal spraying of suspensions|
    DE102016125587A1|2016-12-23|2018-06-28|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Nozzle assembly for thermal spraying by means of a suspension or precursor solution|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017130744.3A|DE102017130744A1|2017-12-20|2017-12-20|Apparatus and method for thermal spraying|
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