A thermal barrier coating material spraying device

Abstract

The utility model relates to thermal spraying technical field, concretely is a kind of thermal barrier coating material spraying device, including mechanical arm and the spraying assembly of installation at the end of mechanical arm, spraying assembly includes fixed seat, and the fixed seat is fixedly installed and is used to spray plasma flame and spray component, multiple filling assemblies for injecting powder material to its inside are equipped on spray component;Filling assembly includes movable piece, and the outer surface of movable piece is fixedly provided with filling pipe, and filling hole that is connected with filling pipe is opened in movable piece;By setting filling assembly, using same set of adjustable filling assembly, different material spraying process can be switched quickly, without frequently replacing equipment or recalibrating parameter, different melting point materials can be compatible, the special thermal behavior of material is adapted, so as to expand the material application range of thermal spraying technology, the density of coating can be also improved, defects are reduced, and semi-melting state is simultaneously regulated to enhance the functionality of coating.

Description

Technical Field

[0001] This utility model relates to the field of thermal spraying technology, and in particular to a thermal barrier coating material spraying device. Background Technology

[0002] Thermal barrier coating material spraying is a process in which coating materials with properties such as heat insulation, oxidation resistance, and corrosion resistance are deposited on the surface of metal or superalloy through specific spraying techniques to protect the substrate material, reduce its temperature, and improve its performance in high-temperature environments.

[0003] Plasma spraying involves feeding metal or ceramic powder into a high-temperature plasma flame, where the plasma stream heats the material to a molten or highly ductile state. Guided by the high-speed plasma flame, the material impacts the workpiece surface at high speed. During the spraying process, the material is first heated to a molten or semi-molten state on a rotating platform. Then, it is propelled forward by the airflow during a flight phase. Finally, it impacts the substrate surface with a certain kinetic energy, causing a strong collision that flattens it into a flat layer and solidifies instantly. The resulting coating is a layered structure composed of countless deformable particles interwoven and stacked in a wave-like pattern, as illustrated in a thermal barrier coating material spraying device disclosed in Chinese Patent Publication No. CN214390777U.

[0004] However, compared with existing technologies in related fields, existing devices only support a single spraying mode and cannot quickly switch between melt spraying, semi-molten coating, and low-temperature deposition. The melting points of different materials (such as metals, ceramics, and polymer composites) are significantly different, which makes some materials prone to phase transformation, decomposition, or component segregation during heating, easily causing coating cracking. Therefore, it is necessary to adapt to different materials by changing the equipment hardware (such as nozzle orifice diameter and power level), which is not very flexible. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a thermal barrier coating material spraying device.

[0006] The objective of this utility model is achieved through the following technical solution: a thermal barrier coating material spraying device, comprising a robotic arm and a spraying assembly installed at the end of the robotic arm, the spraying assembly comprising a fixed base, on which a jetting component for jetting plasma flame is fixedly installed, the jetting component being provided with a plurality of filling components for injecting powder material into it; the filling component comprising a movable component, the outer surface of the movable component being fixedly provided with a filling tube, the movable component being provided with a filling hole communicating with the filling tube.

[0007] Preferably, the injection component includes a main body and a separator, both of which have injection holes at their centers. The tail end of the main body is fixedly installed with multiple mounting tubes for injecting plasma gas, and a flame generator is fixedly installed between the multiple mounting tubes on the main body.

[0008] Preferably, the main body and the separate body are connected by multiple screws.

[0009] Preferably, the movable component is spherical, and both the main body and the separating body have spherical grooves corresponding to the position of the movable component.

[0010] Preferably, the outer surface of the movable part is provided with a sealing layer.

[0011] Preferably, both the main body and the separator have movable grooves at the positions corresponding to the filling pipe.

[0012] Beneficial effects:

[0013] This thermal barrier coating material spraying device, by setting up a filling component, can quickly switch between spraying processes for different materials using the same set of adjustable filling components, without the need for frequent equipment changes or parameter recalibration. It can be compatible with materials with different melting points and adapt to the special thermal behavior of materials, thereby expanding the material application range of thermal spraying technology. It can also improve the density of the coating, reduce defects, and control the semi-molten state to enhance the functionality of the coating. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a first-view structural schematic diagram of the robotic arm of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the robotic arm of this utility model from a second perspective;

[0017] Figure 3 This is a first-view structural schematic diagram of the fixing base of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the fixing base of this utility model from a second perspective;

[0019] Figure 5 This is a schematic diagram showing the state of the filling hole directly spraying into the spray hole of this utility model;

[0020] Figure 6 This is a schematic diagram showing the state of the present invention when the filling hole is obliquely sprayed towards the opening of the spray hole;

[0021] Figure 7 This is a schematic diagram showing the state of the filling hole obliquely spraying into the spray hole of this utility model;

[0022] Figure 8 This is a schematic diagram of the screw structure of this utility model.

[0023] In the diagram: 1. Robotic arm; 2. Fixed base; 3. Spraying component; 301. Main body; 302. Separator; 303. Mounting pipe; 304. Flame generator; 4. Refueling assembly; 401. Moving part; 402. Refueling pipe; 403. Refueling hole; 5. Spraying hole; 6. Screw; 7. Spherical groove; 8. Moving groove. Detailed Implementation

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0026] like Figures 1 to 8 As shown, a thermal barrier coating material spraying device includes a robotic arm 1 and a spraying assembly installed at the end of the robotic arm 1. The spraying assembly includes a fixed base 2, on which a jetting component 3 for jetting plasma flame is fixedly installed. The jetting component 3 is provided with a plurality of filling components 4 for injecting powder material into it. The filling components 4 include a movable component 401, on which a filling tube 402 is fixedly provided on the outer surface of the movable component 401. A filling hole 403 communicating with the filling tube 402 is opened on the movable component 401.

[0027] like Figure 3 , Figure 4 and Figure 6As shown, the injection component 3 includes a main body 301 and a separator 302. Both the main body 301 and the separator 302 have injection holes 5 at their centers. The tail end of the main body 301 is fixedly installed with multiple mounting pipes 303 for injecting plasma gas. The main body 301 is fixedly installed with a flame generator 304 between the multiple mounting pipes 303. The main body 301 and the separator 302 are connected by multiple screws 6.

[0028] like Figures 5 to 8 As shown, the movable part 401 is spherical in shape. Both the main body 301 and the separator 302 have spherical grooves 7 corresponding to the position of the movable part 401. A sealing layer is provided on the outer surface of the movable part 401. Both the main body 301 and the separator 302 have movable grooves 8 corresponding to the position of the filling pipe 402. By rotating the screw 6, the spherical grooves 7 of the main body 301 and the separator 302 no longer clamp the movable part 401. At this time, the movable part 401 can be adjusted through the filling pipe 402, allowing the filling hole 403 of the movable part 401 to flow into the spray hole 5. The system can spray at an angle, spray directly, and spray at an angle towards the opening of the spray hole 5. The angle of the spray can be adjusted in various ways as needed. After adjustment, the spherical groove 7 of the main body 301 and the separator 302 clamps the movable part 401 by using the reverse screw 6, so that the movable part 401 can always maintain the adjusted position. At the same time, the sealing layer can prevent the material from overflowing from the gap between the movable part 401 and the spherical groove 7, and can also improve the clamping strength of the spherical groove 7 of the main body 301 and the separator 302 on the movable part 401.

[0029] The work process is as follows:

[0030] S1, such as Figures 5 to 8 As shown, during use, by rotating the screw 6, the spherical groove 7 of the main body 301 and the separator 302 no longer clamps the movable part 401. At this time, the movable part 401 can be adjusted through the filling tube 402 so that the filling hole 403 of the movable part 401 can spray obliquely and directly into the spray hole 5 and spray obliquely into the opening of the spray hole 5. The oblique spray angle can be adjusted in various degrees according to the requirements.

[0031] S2. Different materials (such as metals, ceramics, and polymer composites) have significantly different melting points. By adjusting the contact time, the melting requirements of the materials can be precisely matched.

[0032] High melting point materials (such as ceramics and refractory metals): Extend the contact time to ensure complete melting;

[0033] For low-melting-point materials (such as easily oxidized metals and polymers): shorten the contact time to avoid overheating, decomposition, or volatilization;

[0034] For example, when spraying nano-ZrO2 ceramics, extending the contact time allows it to melt completely, forming a dense and stable coating; while when spraying aluminum alloys, shortening the contact time can prevent aluminum oxidation or evaporation.

[0035] S3. Some materials (such as nanopowders and composite materials) are prone to phase transformation, decomposition, or component segregation during heating. Precise control of the contact time can avoid these problems.

[0036] Nanomaterials: Avoid overheating that could lead to nanoparticle aggregation or crystal transformation (such as ZrO2 changing from a tetragonal phase to a monoclinic phase);

[0037] Composite materials: to prevent reactions between components due to uneven heating (such as interfacial diffusion in metal-ceramic composite powders);

[0038] S4. Some processes require materials to be in a semi-molten state (such as "soft agglomerated" nanoparticles) to retain the core unmelted structure and achieve special properties:

[0039] Wear-resistant coating: Semi-molten ceramic particles can form a "hard shell-soft core" structure, which improves impact resistance and toughness;

[0040] Thermal barrier coating: Partially molten ZrO2 particles can form layered microcracks, enhancing thermal strain tolerance;

[0041] S5. In summary: By using the same adjustable filling component 4, different coating processes can be quickly switched between materials without frequent equipment changes or parameter recalibration.

[0042] Firstly, it can be compatible with materials with different melting points and adapt to the special thermal behavior of materials, thereby expanding the material application range of thermal spraying technology;

[0043] Secondly, it improves the density of the coating, reduces defects, and at the same time regulates the semi-molten state to enhance the functionality of the coating.

[0044] Third, reduce material waste, improve material utilization, and lower costs, especially for high-value materials such as precious metals and rare ceramics.

[0045] The robotic arm 1 and flame generator 304 described in this application are known in the art, therefore their specific structure and working principle are not described in detail.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A thermal barrier coating material spraying device, characterized in that: It includes a robotic arm (1) and a spraying assembly installed at the end of the robotic arm (1). The spraying assembly includes a base (2) on which a spraying component (3) for spraying plasma flame is fixedly installed. The spraying component (3) is provided with a plurality of filling components (4) for injecting powder material into it. The filling component (4) includes a movable part (401), and a filling tube (402) is fixedly provided on the outer surface of the movable part (401). A filling hole (403) communicating with the filling tube (402) is provided on the movable part (401).

2. The thermal barrier coating material spraying device according to claim 1, characterized in that: The injection component (3) includes a main body (301) and a separator (302). Both the main body (301) and the separator (302) have injection holes (5) at their centers. The tail end of the main body (301) is fixedly installed with multiple mounting pipes (303) for injecting plasma gas. The main body (301) is fixedly installed with a flame generator (304) between the multiple mounting pipes (303).

3. The thermal barrier coating material spraying device according to claim 2, characterized in that: The main body (301) and the separate body (302) are connected by multiple screws (6).

4. The thermal barrier coating material spraying device according to claim 3, characterized in that: The movable part (401) is spherical in shape, and the main body (301) and the separate body (302) are provided with spherical grooves (7) at the positions corresponding to the movable part (401).

5. The thermal barrier coating material spraying device according to claim 4, characterized in that: The outer surface of the movable part (401) is provided with a sealing layer.

6. The thermal barrier coating material spraying device according to claim 5, characterized in that: Both the main body (301) and the separator (302) have movable grooves (8) at the positions corresponding to the filling pipe (402).

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