CN-121540577-B - Particle erosion test device and test method

CN121540577BCN 121540577 BCN121540577 BCN 121540577BCN-121540577-B

Abstract

The application discloses a particle erosion test device and a test method, which belong to the technical field of particle erosion tests and comprise clamping pieces, a sand blasting device and a laser emitter, wherein the clamping pieces are used for clamping workpieces, the sand blasting device is used for emitting laser to irradiate the workpieces to heat the workpieces, the sand blasting device is used for spraying particles to the workpieces to erode the workpieces, the particle erosion test device also comprises a cooling water pipe and a vacuum pipe, the vacuum pipe is sleeved outside the laser emitter, the two opposite ends of the vacuum pipe are connected with the cooling water pipe, the cooling water pipe is communicated with the cooling water tank, the cooling water pipe is used for introducing circulating cooling water into the vacuum pipe to regulate the temperature of the laser emitter, and an air compressor is used for spraying compressed air to the workpieces through a compressed air spray pipe to cool the workpieces. The application realizes stable particle erosion test in simulated extreme environment by using the laser heating device and the particle erosion device in combination, and ensures the validity of the test.

Inventors

AI XING
SONG SHUANGWEN
LI JIAN
CHENG HAO
LI XIN
WANG QUANZHONG
ZHAO YANYUN
ZENG GAO
ZENG JIAXUN
WU JICHANG

Assignees

中国航发湖南动力机械研究所

Dates

Publication Date: 20260512
Application Date: 20260115

Claims (7)

1. The particle erosion test method is carried out by adopting a particle erosion test device, the particle erosion test device comprises a clamping piece (3) for clamping a workpiece, a sand blasting device and a laser emitter (12), the laser emitter (12) is used for emitting laser to irradiate the workpiece so as to heat the workpiece by laser, and the sand blasting device is used for spraying particles to the workpiece so as to erode the workpiece, and the particle erosion test device is characterized by further comprising a cooling water pipe (11) and a vacuum pipe (13): The vacuum tube (13) is sleeved outside the laser emitter (12), the cooling water pipes (11) are connected to the two opposite ends of the vacuum tube (13), the cooling water pipes (11) are communicated with the cooling water tank, and the cooling water pipes (11) are used for introducing circulating cooling water into the vacuum tube (13) so as to regulate the temperature of the laser emitter (12); the particle erosion test method comprises the following steps: S100, setting the power and the emission time of a laser emitter (12) and heating the workpiece to emit laser; S200, monitoring the temperature of a workpiece, and after the workpiece is heated to a preset temperature by laser, turning off a laser emitter (12), S300, performing particle spraying treatment on the workpiece by a sand blasting device, recording the speed of particles, performing energy evaluation on the energy interval of the continuously sprayed particles, and monitoring the uniformity of the energy of the continuously sprayed particles, wherein the energy evaluation has the following formula: ; In the formula, For the mass of the particles, the particles are, Is the speed of the particles; S400, observing and recording the morphological characteristics of the surface of the workpiece after the particle spraying treatment is finished, detecting the surface roughness of the workpiece by a surface roughness meter, detecting the particle coverage rate of the surface of the workpiece by an X-ray fluorescence analyzer, and if the particle coverage rate of the surface of the workpiece is lower than 80%, sequentially increasing the particle spraying speed by 1m/S and repeating the steps S300-S400 until the particle coverage rate of the surface of the workpiece reaches 80%.
2. A particle erosion test method according to claim 1, characterized in that in step S100, the power of the laser emitter (12) is set in the range of 100W-10KW, the laser emission time is not less than 3 seconds and not more than 3 minutes.
3. The method according to claim 1, wherein in step S200, the predetermined temperature is within a range of 800 ℃ to 1400 ℃.
4. A particle erosion test method according to claim 1, wherein step S300 comprises the steps of performing particle spraying treatment on a workpiece through a sand blasting device, measuring the speed of particles through a laser Doppler velocimeter, controlling the speed of particles sprayed by the sand blasting device to be 180-200m/S, eroding the workpiece, and then observing and recording the morphological characteristics of the surface of the workpiece.
5. The method according to claim 1, wherein the step S300 further comprises recording the trajectory of the sprayed particles by using a high-speed camera, and photographing the portion of the workpiece impacted by the particles.
6. The method according to claim 1, wherein the energy evaluation calculation is performed on the continuously sprayed particles every 1 second, and if the total standard deviation of each calculation result is less than 15%, the test is qualified, otherwise the test is repeated.
7. A method of testing for erosion of particles according to claim 1, wherein the apparatus further comprises an air compressor and a compressed air nozzle (4) connected to the air compressor, the air compressor being adapted to spray compressed air through the compressed air nozzle (4) onto the workpiece to cool the workpiece.

Description

Particle erosion test device and test method Technical Field The application relates to the technical field of particle erosion tests, in particular to a particle erosion test device. In addition, the application also relates to a test method adopting the particle erosion test device. Background In the field of aerospace, severe environments such as severe force and thermal coupling can occur due to the harshness and complexity of the service environment, and huge harm is caused to large-scale equipment such as aeroengines, gas turbines and the like. Particularly, in partial extremely severe environments, such as in the bad weather of sand storm, debris flow and the like, hot end components such as turbine blades, combustors and the like of an aeroengine are in extremely severe environments when in service, and erosion of the turbine blades is generated. Therefore, it is particularly important to study the effect of particle erosion on test pieces. The research on the influence of particle erosion in the service environment can provide technical support for the examination of key hot end components of aerospace important equipment, and is beneficial to the improvement of comprehensive performance. Particle erosion devices typically use a high velocity particle stream to impact a target surface in order to remove material or change its surface shape, and therefore, understanding the interactions between particles and the target surface, particle dynamics, and particle flow characteristics are important research considerations, and there is a great need to develop related research. Particle erosion also requires the use of suitable heating means. Heating techniques may include various ways for delivering energy to the target object to raise its temperature. The traditional flame heating can not control the temperature, and the temperature is uncontrollable caused by using the method. And the quartz lamp is used for heating, so that the external impact is inconvenient to carry out, and the main test purpose of particle erosion cannot be achieved. At present, in the gradual research and development of particle erosion tests of hot end parts of an aeroengine, the problems of how to realize stable simulation of particle erosion tests in extreme environments, realizing real-time monitoring and convenient regulation of temperature, enabling test operation to be easier, higher reliability and the like are faced. Disclosure of Invention In view of at least one of the above technical problems, the application provides a particle erosion test device, which can realize stable simulation of particle erosion test in extreme environment through the combined use of a laser heating device and a particle erosion device, and ensure the validity of the test. The application also provides a test method adopting the particle erosion test device. According to an aspect of the present application, there is provided a particle erosion test apparatus including a clamping member for clamping a workpiece, a blasting apparatus for blasting particles toward the workpiece to erode the workpiece by irradiating the workpiece with laser light, and a laser emitter for emitting laser light to heat the workpiece, the particle erosion test apparatus further including a cooling water pipe and a vacuum pipe: The vacuum pipe is sleeved outside the laser emitter, the two opposite ends of the vacuum pipe are connected with cooling water pipes, the cooling water pipes are communicated with the cooling water tank, and the cooling water pipes are used for introducing circulating cooling water into the vacuum pipe so as to regulate the temperature of the laser emitter. In some embodiments of the application, the particle erosion test apparatus further comprises an air compressor and a compressed air nozzle connected to the air compressor, the air compressor being configured to spray compressed air through the compressed air nozzle onto the workpiece to cool the workpiece. According to another aspect of the present application, there is also provided a particle erosion test method, which adopts the above particle erosion test apparatus, the particle erosion test method comprising the steps of: s100, setting the power and the emission time of a laser emitter, and heating the laser emitted by the workpiece; S200, monitoring the temperature of a workpiece, and turning off a laser emitter when the workpiece is heated to a preset temperature by laser; s300, carrying out particle spraying treatment on a workpiece through a sand blasting device, and recording the speed of particles; And S400, observing and recording the morphological characteristics of the surface of the workpiece after the spray particle treatment is completed. In some embodiments of the present application, in step S100, the power of the laser emitter is set to be in the range of 100W-10KW, the laser emission time is not less than 3 seconds and not longer than 3 minutes. In some embodiments of