A particle erosion test device and test method

Abstract

The application discloses a kind of particle erosion test device and test method, belong to particle erosion test technical field, including for clamping workpiece clamping piece, sand blasting device and laser emitter, laser emitter is used to emit laser to irradiate workpiece to heat workpiece, sand blasting device is used to spray particle to workpiece to erode workpiece, particle erosion test device further includes cooling water pipe and vacuum pipe: vacuum pipe is sleeved in laser emitter outside, opposite ends of vacuum pipe are connected with cooling water pipe, cooling water pipe is communicated with cooling water tank, cooling water pipe is used to circulate cooling water into vacuum pipe to adjust the temperature of laser emitter, air compressor is sprayed compressed air to workpiece by compressed air spray pipe to cool workpiece.The application is realized by the combination use of laser heating device and particle erosion device, realizes stable simulation particle erosion test in extreme environment, guarantees the effectiveness of test.

Description

Technical Field

[0001] This application relates to the field of particle erosion testing technology, and in particular, to a particle erosion testing apparatus. Furthermore, this application also relates to a testing method using the aforementioned particle erosion testing apparatus. Background Technology

[0002] In the aerospace field, the harsh and complex service environment can lead to severe force and thermal coupling, causing significant damage to large equipment such as aero-engines and gas turbines. In particular, under extreme conditions such as sandstorms and mudslides, hot-end components like aero-engine turbine blades and combustion chambers are subjected to extreme conditions during service, resulting in turbine blade erosion. Therefore, studying the impact of particulate erosion on test specimens is crucial. Researching the effects of particulate erosion under service conditions can provide technical support for the evaluation of critical hot-end components in major aerospace equipment, contributing to improved overall performance.

[0003] Particle erosion apparatuses typically use high-speed particle streams to impact a target surface in order to remove material or alter its surface shape. Therefore, understanding the interaction between particles and the target surface, particle dynamics, and the characteristics of the particle stream is crucial research, making related research essential. Particle erosion also requires suitable heating methods. Heating techniques can include various approaches used to transfer energy to the target object to raise its temperature. Traditional flame heating lacks temperature control, leading to uncontrollable temperature fluctuations. Quartz lamp heating, on the other hand, is inconvenient for applying external impacts and fails to achieve the primary experimental objective of particle erosion.

[0004] Currently, particle erosion testing of hot-end components of aero-engines is under gradual research and development. The challenges include how to achieve stable simulation of particle erosion testing in extreme environments, and how to enable real-time temperature monitoring and easy control to make the test operation easier and more reliable. Summary of the Invention

[0005] In view of at least one of the above technical problems, this application provides a particle erosion test device, which can realize stable simulation of particle erosion test in extreme environment by using a combination of laser heating device and particle erosion device, and ensure the effectiveness of the test.

[0006] This application also provides a test method using the above-mentioned particle erosion test apparatus.

[0007] According to one aspect of this application, a particle erosion testing apparatus is provided, comprising a clamping component for clamping a workpiece, a sandblasting device, and a laser emitter. The laser emitter is used to emit a laser to irradiate the workpiece to heat it, and the sandblasting device is used to spray particles onto the workpiece to erode it. The particle erosion testing apparatus further includes a cooling water pipe and a vacuum pipe.

[0008] The vacuum tube is fitted over the laser emitter, and cooling water pipes are connected to both ends of the vacuum tube. The cooling water pipes are connected to a cooling water tank and are used to circulate cooling water into the vacuum tube to regulate the temperature of the laser emitter.

[0009] In some embodiments of this application, the particle erosion testing apparatus further includes an air compressor and a compressed air nozzle connected to the air compressor. The air compressor is used to spray compressed air onto the workpiece through the compressed air nozzle to cool the workpiece.

[0010] According to another aspect of this application, a particle erosion testing method is also provided, which employs the above-mentioned particle erosion testing apparatus. The particle erosion testing method includes the following steps:

[0011] S100: Sets the power and emission time of the laser emitter to heat the workpiece by emitting laser light;

[0012] S200: Monitors workpiece temperature; once the workpiece is heated to the preset temperature by the laser, the laser emitter is turned off.

[0013] S300: The workpiece is treated with blasting particles by a sandblasting device, and the speed of the particles is recorded.

[0014] S400: After completing the sprayed particle treatment, observe and record the morphological characteristics of the workpiece surface.

[0015] In some embodiments of this application, in step S100, the power range of the laser emitter is set to 100W-10KW, and the laser emission time is not less than 3 seconds and not more than 3 minutes.

[0016] In some embodiments of this application, in step S200, the preset temperature range is 800℃-1400℃.

[0017] In some embodiments of this application, step S300 specifically includes: spraying particles onto the workpiece using a sandblasting device, measuring the particle velocity using a laser Doppler velocimeter, controlling the particle velocity of the sandblasting device to be between 180-200 m / s to erode the workpiece, and then observing and recording the morphological features of the workpiece surface.

[0018] In some embodiments of this application, step S300 further includes: using a high-speed camera to capture and record the trajectory of the jet particles, and capturing images of the parts of the workpiece impacted by the particles.

[0019] In some embodiments of this application, step S300 further includes: performing an energy assessment on the energy interval of the continuously ejected particles, and monitoring the uniformity of the energy of the continuously ejected particles. The formula for energy assessment is:

[0020] ;

[0021] In the formula, For the mass of the particles, The velocity of the particle.

[0022] In some embodiments of this application, the energy of the continuously sprayed particles is calculated every second. If the overall standard deviation of each calculation result is less than 15%, the test is considered qualified; otherwise, the test needs to be repeated.

[0023] In some embodiments of this application, in step S400, the surface roughness of the workpiece is detected by a surface roughness meter; and the particle coverage of the workpiece surface is detected by an X-ray fluorescence analyzer. If the particle coverage of the workpiece surface is less than 80%, the particle spraying speed is increased by 1 m / s and steps S300-S400 are repeated until the particle coverage of the workpiece surface reaches 80%.

[0024] This application has the following beneficial effects:

[0025] This application discloses a particle erosion testing device. After clamping the workpiece with a clamping device, a laser emitter irradiates the workpiece to heat it. Then, a sandblasting device sprays particles onto the workpiece to erode it, achieving a stable simulation of particle erosion testing in extreme environments. The laser emitter is encased in a vacuum tube, which isolates and protects it, reducing interference from gas molecules and providing more stable and reliable conditions to ensure stable laser emission. Simultaneously, cooling water pipes are connected to both ends of the vacuum tube, which are connected to a cooling water tank. Circulating cooling water can be introduced into the vacuum tube through these pipes to regulate the temperature of the laser emitter, preventing it from overheating and ensuring stable operation. This allows for continuous laser heating of the workpiece to the preset temperature, guaranteeing the effectiveness of the test.

[0026] The particle erosion test method of this application also has the aforementioned beneficial effects. It further includes heating the workpiece to a preset temperature range using a laser, overcoming the shortcomings of traditional flame heating (uncontrollable temperature) and the inconvenience of applying external impact when using quartz lamps. It also facilitates the adjustment of the laser emitter's power to regulate laser energy and thus control the workpiece heating temperature, ensuring the reliability of the test. Combined with a sandblasting device, particles are sprayed onto the workpiece to achieve the effect of erosion on the workpiece surface. The particle velocity is recorded, and the surface morphology of the workpiece is observed. Combining parameters such as workpiece temperature and particle velocity facilitates the analysis of the workpiece's performance under different working conditions, which is beneficial for feedback to the design stage to improve various performance aspects of the workpiece and thus ensure the reliability of key components.

[0027] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above simultaneously. In addition to the purposes, features, and advantages described above, this application also has other purposes, features, and advantages. The following will provide a more detailed description of this application with reference to figures. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 This is a schematic diagram showing the installation positions of the sandblasting pipe and the compressed air nozzle in a preferred embodiment of this application;

[0030] Figure 2 This is a schematic diagram of a vacuum tube sleeved on a laser emitter according to a preferred embodiment of this application.

[0031] Legend: 1. Base; 2. Bracket; 3. Clamping component; 31. Locking component; 4. Compressed air nozzle; 5. Sandblasting pipe; 6. Temperature sensor; 7. Mounting bracket; 8. Positive power cord; 9. Negative power cord; 10. Power supply; 11. Cooling water pipe; 12. Laser emitter; 13. Vacuum tube. Detailed Implementation

[0032] The embodiments of this application are described in detail below with reference to the accompanying drawings; however, this application may be implemented in a variety of different ways as defined and covered below.

[0033] A particle erosion testing device includes a clamping component 3 for clamping a workpiece, a sandblasting device, and a laser emitter 12. The laser emitter 12 is used to emit a laser to irradiate the workpiece to heat it. The sandblasting device is used to spray particles onto the workpiece to erode it. The particle erosion testing device also includes a cooling water pipe 11 and a vacuum pipe 13.

[0034] The vacuum tube 13 is sleeved outside the laser emitter 12. Both ends of the vacuum tube 13 are connected to cooling water pipes 11. The cooling water pipes 11 are connected to the cooling water tank and are used to circulate cooling water into the vacuum tube 13 to regulate the temperature of the laser emitter 12.

[0035] Here, "clamping component 3" refers to a structure for clamping the workpiece. In some embodiments, clamping component 3 includes a clamping component body and a locking component 31. The clamping component body has a limiting groove for limiting the workpiece. The locking component 31 engages with a screw hole on the side wall of the limiting groove. By tightening the locking component 31, the workpiece is tightened to achieve stable clamping and limiting. The clamping component 3 can clamp and fix workpieces of different specifications and sizes, improving the adaptability of the erosion testing device and facilitating the conduct of particle erosion tests.

[0036] Specifically, the clamping component 3 is supported by the bracket 2, the bottom end of which is connected to the base 1. This allows the clamping component 3 to easily adjust the position of the workpiece, enabling the laser emitter 12 to accurately emit laser light onto the workpiece and to spray particles onto the workpiece in conjunction with the sandblasting device. The sandblasting pipe 5 of the sandblasting device is limited by the limiting hole on the bracket 2, ensuring that the outlet of the sandblasting pipe 5 is stably aligned with the workpiece, thus achieving the particle spraying treatment of the workpiece.

[0037] Alternatively, the locking element 31 may be a bolt or thread, and the use of standard parts helps to reduce procurement and maintenance replacement costs.

[0038] It should be noted that the cooling water pipe 11 on one side of the laser emitter 12's emission port allows for cooling water inlet, while the cooling water pipe 11 on the other side allows cooling water to return to the cooling water tank. A water pump is installed in the cooling water tank, and the cooling water pipe 11 on the laser emitter 12's emission port side is connected to the water pump, thus achieving cooling water circulation. This ensures timely removal of heat from the laser emitter 12, guaranteeing stable operation of the laser emitter 12 and continuous laser heating of the workpiece to the preset temperature. The temperature sensor 6 monitors the workpiece's stability in real time. The vacuum tube 13 is supported by the mounting bracket 7 to allow for adjustment of the positions of the vacuum tube 13 and the laser emitter 12.

[0039] In addition, the laser emitter 12 is connected to and powered by the power supply 10. In some embodiments, the power supply 10 is connected to both ends of the laser emitter 12 through the positive power line 8 and the negative power line 9. The power of the laser emitter 12 can be adjusted by the voltage adjustment module of the power supply 10 to generate laser heating spots of different power and diameter. Since this is prior art, it will not be described in detail here.

[0040] This application discloses a particle erosion testing device. After clamping the workpiece with a clamping component 3, a laser emitter 12 irradiates the workpiece to heat it. Then, a sandblasting device sprays particles onto the workpiece to erode it, achieving a stable simulation of particle erosion testing in extreme environments. The laser emitter 12 is encased in a vacuum tube 13, which isolates and protects the laser emitter 12, reducing interference from gas molecules and providing more stable and reliable conditions to ensure stable laser emission. Simultaneously, cooling water pipes 11 are connected to opposite ends of the vacuum tube 13, which are connected to a cooling water tank. Circulating cooling water can be introduced into the vacuum tube 13 through the cooling water pipes 11 to regulate the temperature of the laser emitter 12, preventing it from overheating and ensuring stable operation. This allows for continuous laser heating of the workpiece to a preset temperature, guaranteeing the effectiveness of the test.

[0041] Preferably, please refer to Figure 1 As shown, the particle erosion test apparatus also includes an air compressor and a compressed air nozzle 4 connected to the air compressor. The air compressor is used to spray compressed air onto the workpiece through the compressed air nozzle 4 to cool the workpiece.

[0042] It is understandable that the laser emitter 12 can efficiently heat the workpiece with laser. In order to prevent the workpiece temperature from being too high and exceeding the preset range, compressed air can be sprayed onto the workpiece through the compressed air nozzle 4 of the air compressor. The rapid expansion of the compressed air around the workpiece can reduce the gas temperature, thereby cooling the workpiece and ensuring that the workpiece is within the preset temperature range, thus ensuring the reliability of the test.

[0043] According to another aspect of this application, a particle erosion testing method is also provided, which employs the above-mentioned particle erosion testing apparatus. The particle erosion testing method includes the following steps:

[0044] S100: Set the power and emission time of the laser emitter 12 to emit laser light to heat the workpiece;

[0045] S200: Monitors workpiece temperature; when the workpiece is heated to the preset temperature by the laser, the laser emitter 12 is turned off.

[0046] S300: The workpiece is treated with blasting particles by a sandblasting device, and the speed of the particles is recorded.

[0047] S400: After completing the sprayed particle treatment, observe and record the morphological characteristics of the workpiece surface.

[0048] The particle erosion test method of this application also has the aforementioned beneficial effects. It further includes heating the workpiece to a preset temperature range using a laser, overcoming the shortcomings of traditional flame heating (uncontrollable temperature) and the inconvenience of applying external impact when using quartz lamps. It also facilitates the adjustment of the laser emitter's power to regulate laser energy and thus control the workpiece heating temperature, ensuring the reliability of the test. Combined with a sandblasting device, particles are sprayed onto the workpiece to achieve the effect of erosion on the workpiece surface. The particle velocity is recorded, and the surface morphology of the workpiece is observed. Combining parameters such as workpiece temperature and particle velocity facilitates the analysis of the workpiece's performance under different working conditions, which is beneficial for feedback to the design stage to improve various performance aspects of the workpiece and thus ensure the reliability of key components.

[0049] Preferably, in step S100, the power range of the laser emitter 12 is set to 100W-10KW, and the laser emission time is not less than 3 seconds and not more than 3 minutes.

[0050] It is understandable that by setting the power of the laser emitter 12 in the range of 100W-10KW, stable laser heating of the workpiece can be achieved. However, if the power of the laser emitter 12 is less than 100W, the energy will be insufficient to achieve an effective heating effect. In some working conditions, it will not be enough to simulate molten material or induce phase transformation, affecting particle bonding or enhancing erosion effect, resulting in poor experimental simulation results. On the other hand, if the power of the laser emitter 12 is higher than 10KW, it is easy to induce workpiece ablation, thermal stress cracking or matrix deformation, leading to failure of the erosion test.

[0051] Meanwhile, by controlling the power of the laser emitter 12 and controlling the laser emission time to be no less than 3 seconds and no more than 3 minutes, the workpiece can be heated stably and quickly to the preset range. This will prevent the formation of a stable molten pool or uniform heat diffusion due to the laser action time being too short, which would result in uneven structure. It will also prevent the expansion of the heat-affected zone due to the laser irradiation time being too long, which would reduce the fatigue strength of the workpiece and affect the reliability of the overall erosion test of the workpiece.

[0052] Preferably, in step S200, the preset temperature range is 800℃-1400℃.

[0053] It is understandable that stable simulation tests can be achieved by monitoring the workpiece temperature within a preset range. However, if the workpiece temperature is too high or even exceeds 1400°C, it can easily cause material oxidation, grain coarsening, or uncontrolled local melting. If the workpiece temperature is below the lower limit, recrystallization or residual stress relief cannot be achieved, and the erosion test cannot be carried out normally.

[0054] In some embodiments, the workpiece is made of stainless steel or a nickel-based alloy. When setting the power of the laser emitter 12 and simultaneously monitoring the temperature of the workpiece, since stainless steel has high thermal conductivity (approximately 15 W / m·K) and is easily oxidized, the laser energy density is set to 500–3000 W / cm². 2 (Laser spot diameter 1–5 mm), while nickel-based alloys, due to their high melting point (approximately 1350°C) and low thermal diffusivity, require higher laser energy densities of 3000–8000 W / cm². 2 Additionally, if the laser pulse frequency needs to be set (e.g., for test conditions involving thin-walled workpieces), 50–200 Hz is suitable for stainless steel workpieces, while 100–500 Hz is required for nickel-based alloy workpieces to refine the grains. During adjustment, the laser parameters should be adjusted in real-time using infrared thermography to prevent thermal cracking or elemental loss in the workpiece, thereby minimizing the laser's impact on the workpiece and ensuring the smooth conduct of the erosion test.

[0055] Preferably, step S300 specifically includes: spraying particles onto the workpiece using a sandblasting device, measuring the particle velocity using a laser Doppler velocimeter, controlling the particle velocity of the sandblasting device to be between 180-200 m / s to erode the workpiece, and then observing and recording the morphological characteristics of the workpiece surface.

[0056] It is understandable that by measuring the speed of the particles ejected by the sandblasting device and controlling the power of the sandblasting device to avoid excessively high particle speeds, high-speed particles can prevent over-erosion of the workpiece substrate or the generation of micro-cracks, thereby reducing additional damage to the workpiece, ensuring the normal conduct of the erosion test, and obtaining effective erosion test results.

[0057] In some embodiments, the particles sprayed by the sandblasting device are quartz sand to more realistically simulate extreme environmental conditions.

[0058] Preferably, step S300 further includes: using a high-speed camera to capture and record the trajectory of the jet particles, and capturing images of the parts of the workpiece impacted by the particles.

[0059] Understandably, by recording the trajectory of the sandblasting particles, the accuracy of the particle spraying direction can be analyzed in conjunction with the surface morphology of the workpiece, so as to adjust the position of the sandblasting device, the workpiece, or the compressed air nozzle 4 to ensure that the workpiece is accurately eroded by the particles.

[0060] Among them, the high-speed camera has a frame rate of more than 100,000 fps to ensure the accuracy of tracking and recording particle trajectories.

[0061] Preferably, step S300 further includes: performing an energy assessment on the energy interval of the continuously sprayed particles, and monitoring the uniformity of the energy of the continuously sprayed particles. The formula for energy assessment is:

[0062] ;

[0063] In the formula, For the mass of the particles, The velocity of the particle.

[0064] Understandably, by assessing the energy interval of continuously sprayed particles and monitoring the uniformity of their energy, it is possible to ensure that the particles continuously and stably create an erosion effect on the workpiece, thus ensuring the reliability of the erosion test.

[0065] Preferably, the energy of the continuously sprayed particles is calculated every second. If the overall standard deviation of each calculation result is less than 15%, the test is considered qualified; otherwise, the test needs to be repeated.

[0066] It should be noted that if the energy of the sprayed particles is uneven and the overall standard deviation is less than 15%, it can easily lead to a decrease in the adhesion of the particles and prevent the formation of an effective erosion effect.

[0067] Preferably, in step S400, the surface roughness of the workpiece is detected by a surface roughness tester; and the particle coverage of the workpiece surface is detected by an X-ray fluorescence analyzer. If the particle coverage of the workpiece surface is less than 80%, the particle spraying speed is increased by 1 m / s and steps S300-S400 are repeated until the particle coverage of the workpiece surface reaches 80%.

[0068] Understandably, by monitoring and recording the surface roughness of the workpiece and the particle coverage rate, combined with data such as the power and time of the laser emitter 12, as well as the particle velocity and energy standard deviation, subsequent analysis and comparative studies can be facilitated. This data can then be fed back to the design stage to optimize and adjust the workpiece design, thereby improving various performance characteristics and ensuring the reliability of key components. If the particle coverage rate on the workpiece surface is less than 80%, it indicates that the particle spraying velocity is insufficient to create an effective erosion effect on the workpiece in this test. The particle spraying velocity needs to be gradually increased to ensure that the particle coverage rate on the workpiece surface reaches at least 80% for a more comprehensive evaluation and analysis of the erosion effect. Simultaneously, the particle velocity must not exceed 200 m / s to avoid over-etching of the workpiece substrate or the formation of microcracks, which could affect the judgment and analysis of the test results.

[0069] It should be noted that before the particle erosion test method of this application begins, it is necessary to confirm that there are no flammable or explosive materials around the working area of ​​the laser heater 12, and to ensure sufficient ventilation to guarantee the safety of the test process.

[0070] In summary, to simulate the severe damage that can occur to critical components of aero-engines, such as turbine blades and combustion chambers, under extreme and harsh environments like sandstorms and mudslides, including but not limited to turbine blade erosion, this application provides a laser-heated particle erosion testing device that combines a laser heating device and a particle erosion device to simulate particle erosion tests in extreme environments. A laser is a high-energy beam of focused light, typically generated by a laser generator, which can emit, amplify, modulate, and control the characteristics of the laser beam. This application features a laser emitter 12 and real-time monitoring and adjustment of the workpiece temperature. The laser heating method avoids the drawbacks of traditional flame heating (uncontrollable temperature) and quartz lamp heating (inconvenient for external impact), making the erosion test operation easier and more reliable.

[0071] This application enables temperature-controlled particle erosion testing of workpieces, overcoming the shortcomings of traditional flame heating (uncontrollable temperature) and the inconvenience of applying external impacts when using quartz lamps. It also achieves positive and negative polarity control of the laser emitter 12 to regulate laser energy. Simultaneously, a temperature sensor allows for real-time temperature monitoring of the workpiece clamped by the fixture 3, and compressed air is used to cool the workpiece, thus regulating its temperature. This application achieves an economical, safe, clean, quiet, flexible, and efficient particle erosion test.

[0072] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0073] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered as protected by this application.

Claims

1. A method of a particle erosion test, which is performed using a particle erosion test device including a chuck (3) for chucking a workpiece, a sandblasting device, and a laser emitter (12) for emitting laser light to irradiate the workpiece to perform laser heating on the workpiece, the sandblasting device being for spraying particles to the workpiece to perform erosion on the workpiece, characterized in that, The particle erosion test device further comprises a cooling water pipe (11) and a vacuum pipe (13): The vacuum pipe (13) is sleeved outside the laser emitter (12), and the opposite ends of the vacuum pipe (13) are connected with the cooling water pipe (11), the cooling water pipe (11) is in communication with a cooling water tank, and the cooling water pipe (11) is used for circulating cooling water into the vacuum pipe (13) to adjust the temperature of the laser emitter (12); The particle erosion test method comprises the following steps: S100: setting the power and emission time of the laser emitter (12) to heat the workpiece by laser emission; S200: monitoring the temperature of the workpiece, and closing the laser emitter (12) when the workpiece is heated to a preset temperature by laser; S300: spraying particles on the workpiece by the sand blasting device, recording the speed of the particles; energy evaluation is performed on the energy interval of the continuously sprayed particles, and the uniformity of the energy of the continuously sprayed particles is monitored, and the formula of the energy evaluation is: ； wherein is the mass of the particle, is the velocity of the particle; S400: observing and recording the surface morphology of the workpiece after the particle spraying treatment; detecting the surface roughness of the workpiece by a surface roughness instrument; and detecting the particle coverage rate of the workpiece surface by an X-ray fluorescence analyzer, if the particle coverage rate of the workpiece surface is less than 80%, the particle spraying speed is increased by 1 m / s in turn, and steps S300-S400 are repeated until the particle coverage rate of the workpiece surface reaches 80%.

2. A method of particle erosion testing according to claim 1, characterised in that, In step S100, the power range of the laser emitter (12) is 100W-10KW, and the laser emission time is not less than 3 seconds and not more than 3 minutes.

3. A method of particle erosion testing according to claim 1, wherein, In step S200, the preset temperature is in the range of 800-1400℃.

4. A method of particle erosion testing according to claim 1, wherein, Step S300 specifically comprises: spraying particles on the workpiece by the sand blasting device, measuring the speed of the particles by a laser Doppler velocimeter, controlling the speed of the sand blasting device to spray particles between 180-200 m / s to erode the workpiece, and then observing and recording the surface morphology of the workpiece.

5. The method of claim 1, wherein Step S300 further comprises: using a high-speed camera to record the trajectory of the sprayed particles and the position of the workpiece impacted by the particles.

6. The method of claim 1, wherein The energy of the continuously sprayed particles is evaluated and calculated every 1 second, if the overall standard deviation of each calculation result is less than 15%, the test is qualified, otherwise the test needs to be repeated.

7. The method of claim 1, wherein The particle erosion test device further comprises an air compressor and a compressed air nozzle (4) connected with the air compressor, the air compressor is used for spraying compressed air on the workpiece through the compressed air nozzle (4) to cool the workpiece.

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