A system and method for testing laser reflectance intensity spatial arrays for laser cladding

Abstract

The application discloses a kind of for laser cladding laser reflection intensity spatial array test system and method, system includes: laser processing platform, XYZ three-axis ball screw, laser head, workpiece to be processed, light intensity sensor, data acquisition card and computer.System through different light intensity sensor corresponding different reflection angle and distance, record the position coordinates of each light intensity sensor in space, the light intensity sensor data obtained by recording is passed through bidirectional reflection distribution function, using measured data bidirectional reflection distribution function fitting reflection intensity spatial distribution, and the energy size of laser reflection of metal material in unit time is obtained, thus the change of laser energy absorption rate of material surface with time is calculated.The application realizes monitoring in the process of laser cladding workpiece material to the dynamic absorption rate of laser energy, and provides guarantee for the process quality control of laser thermal processing.

Description

Technical Field

[0001] The present invention relates to the field of testing equipment, and in particular to a system and method for testing a spatial array of laser reflection intensity for laser cladding. Background Art

[0002] As an advanced additive manufacturing technology, laser cladding has become a mainstream technique for manufacturing and repairing complex parts due to its advantages, such as rapid heating and cooling rates, low dilution rate, metallurgical bonding with the substrate, and strong operability. It has been widely used in fields such as automotive manufacturing and aerospace. Its working principle is to add cladding material to the substrate surface and use a high-energy-density laser beam to melt it together with the substrate surface, forming a metallurgically bonded cladding layer on the substrate surface. In this process, the conversion and transmission of laser energy is extremely important.

[0003] When the laser acts on the surface of a metal material, its energy is divided into two parts: absorbed by the material and reflected by the material. The energy absorbed by the material is used for melting and forming the metal, which determines the laser energy utilization rate and the quality of the cladding forming. At present, the main methods for measuring the material's absorption rate of laser light are the in-situ method (direct method) and some indirect measurement methods. The measurement principle of the in-situ method is to measure the change in substrate temperature before and after the laser action, and to derive the heat absorbed during laser thermal processing from the specific heat capacity formula, thereby calculating the absorption rate. However, this method is not suitable for general thicker workpieces, and ignores the heat conduction process inside the workpiece. Therefore, the in-situ method focuses on the final result of the laser absorption rate measurement, rather than the real-time changes during the processing process. The existing indirect measurement method requires the processing of a smooth surface and the measurement of the single-point laser reflection intensity at the laser reflection position to infer the laser energy utilization rate.

[0004] In actual laser cladding processes, substrate geometry varies widely, making it difficult to infer laser energy utilization by measuring actual substrate temperature changes. Measuring the corresponding laser energy at a single point also fails to reflect the mixed characteristics of specular and diffuse reflections from the laser acting on the part surface during the actual cladding process. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In order to solve the above technical problems, the present invention provides a spatial array test system for laser reflection intensity in laser cladding. By designing a single-point laser reflection intensity test module and rationally arranging the spatial test system, the reflection intensity of the laser at different positions in space during the cladding process is measured. Through data calibration, the distribution of laser reflection energy around the laser action point is obtained by inverse calculation, and the real-time reflection law of the material to the laser energy is obtained, thereby inversely calculating the dynamic absorption law of the laser energy, which is applied to the dynamic test and feedback control of energy absorption in the laser cladding process.

[0007] (2) Technical solution

[0008] In order to solve the above-mentioned technical problems and achieve the purpose of the invention, the present invention is implemented through the following technical solutions:

[0009] A spatial array testing system for laser reflection intensity of laser cladding, the system comprising:

[0010] Laser platform, light intensity sensor, data acquisition card and computer;

[0011] The workpiece to be processed is placed on the laser platform, and the XYZ-axis ball screws. The X-axis ball screw and the Y-axis ball screw can move the workpiece fixed thereon to any position on the horizontal plane within a certain range. The path and speed of the laser scanning can be set in the controller of the laser head. Both enable the workpiece to be processed to complete horizontal displacement during the laser cladding process. The laser head is fixed on the Z-axis ball screw, enabling the laser head to complete vertical displacement. The height of the laser head is adjusted and fixed before laser processing.

[0012] The light intensity sensor includes multiple light intensity sensors arranged at different positions in space. The light intensity sensors are arranged around the reflection point and are used to measure the intensity of laser reflection in various directions in space. The multiple light intensity sensors are respectively connected to the data acquisition card and transmit the collected data to the computer.

[0013] Furthermore, the light intensity sensor includes a light intensity sensor housing, a mounting base, a photoelectric conversion module circuit board, circuit board mounting bolts, nuts, an avalanche photodiode, a lens mount, a filter, a plano-concave lens, a power line and a signal output line;

[0014] Furthermore, the reflected light passes through a filter to remove ambient light and a portion of the thermal radiation generated by the workpiece heating, making the light beam reaching the plano-concave lens closer to the laser reflected light; the reflected light beam then passes through the plano-concave lens to focus on the receiving point of the avalanche photodiode located at the lens focus;

[0015] Furthermore, when the reflected light directed toward a certain point in space is focused on the receiving point of the avalanche photodiode, the avalanche photodiode can convert the received light signal into a photocurrent, which is then converted into a voltage output value corresponding to the intensity of the reflected light at that time through the photoelectric conversion module circuit. The output voltage is connected to the input terminal of the data acquisition card through the signal output line. The data acquisition card is connected to the computer via USB. The computer can display and record the real-time waveform of the signal input of the data acquisition card on the computer, thereby obtaining the voltage value corresponding to the intensity of the reflected light.

[0016] Furthermore, the measurement system also includes establishing a spherical coordinate system with the laser reflection point as the origin. According to the angle θ between the reflected light at the corresponding position and the Z axis, the angle φ between its projection on the horizontal plane and the X axis, and the distance r between the filter center of the light intensity sensor and the reflection point, the position of the light intensity sensor in a certain direction can be determined, thereby measuring the voltage value corresponding to the reflection intensity in that direction.

[0017] By measuring the laser of the same wavelength with a specific intensity, the output voltage value of the light intensity sensor is calibrated with the intensity of the light it receives, and the relationship between its intensity / energy density and output voltage is obtained, thus obtaining accurate laser reflection intensity test results.

[0018] The bidirectional reflectance distribution function (BRDF) is used to describe the reflection characteristics of lasers. The bidirectional reflectance distribution function (BRDF) is expressed as follows:

[0019]

[0020] Where θ and φ are the zenith angle and distribution angle coordinates of the incident / reflected light in the spherical coordinate system, the subscripts i and r represent the incident and reflected light respectively, and λ is the wavelength of the light. r The physical meaning is to express the surface irradiance E from the incident direction i The micro-increment and the reflected radiation brightness L caused by it in the reflected direction r The ratio between the micro increments.

[0021] Arrange several light intensity sensors in the spherical coordinate space to record the laser reflection intensity L in different directions of the test space. r , record the spherical coordinates r,θ of the sensor point r ,φ r ; and the laser head incident position is fixed θ i =0°,φ i =0°, surface irradiance E i It is a function related to the laser power P. Therefore, at any point in time, the measured data can be used to fit the spatial distribution of the reflection intensity with the bidirectional reflectance distribution function, and the reflected radiation brightness L in the hemispherical space can be calculated. r The energy reflected by the metal material to the laser per unit time is obtained by integration, and the change of the absorption rate of the material surface to the laser energy over time is calculated from this.

[0022] The present invention also provides a method for testing a spatial array of laser reflection intensity of laser cladding, comprising the following steps:

[0023] S1: Fix the position of the light intensity sensor and place the workpiece to be processed. Specifically, fix each light intensity sensor around the laser head. Use a tripod to fix the position of the light intensity sensor. Use a ruler to adjust the height of the light intensity sensor and the distance from the laser reflection point. Use a guide laser light to calibrate the angle of the light intensity sensor so that the lens axis is facing the reflection point of the laser on the workpiece.

[0024] S2: Connect the light intensity sensors. Specifically, connect the data cables of each light intensity sensor. Connect the power cable of the light intensity sensor to a 10V DC power supply, and the signal cable directly to the input of the data acquisition card. The data acquisition card is connected to the computer via a USB data cable.

[0025] S3: Obtain light intensity sensor data. When the laser head is working, operate the computer to observe and record the changes in the voltage value corresponding to the reflection intensity.

[0026] S4: Calculate the acquired data to obtain the change of the absorption rate of the material surface to the laser energy over time. Specifically including:

[0027] The recorded data is converted into light intensity through the relationship between intensity / energy density and output voltage. The measured data is used to fit the spatial distribution of the reflection intensity using the bidirectional reflectance distribution function, and the reflected radiation brightness in the hemispherical space is integrated to obtain the amount of energy reflected by the metal material by the laser per unit time. The change in the absorption rate of the material surface to the laser energy over time is thus calculated.

[0028] Furthermore, the bidirectional reflectance distribution function is used to describe the reflection characteristics of the laser. The bidirectional reflectance distribution function BRDF is expressed by the following formula:

[0029]

[0030] Where θ and φ are the zenith angle and distribution angle coordinates of the incident / reflected light in the spherical coordinate system, the subscripts i and r represent the incident and reflected light respectively, and λ is the wavelength of the light. r The physical meaning is to express the surface irradiance E from the incident direction i The micro-increment and the reflected radiation brightness L caused by it in the reflected direction r The ratio between the micro increments.

[0031] Arrange several light intensity sensors in the spherical coordinate space to record the laser reflection intensity L in different directions of the test space. r , record the spherical coordinates r,θ of the sensor point r ,φ r ; and the laser head incident position is fixed θ i =0°,φ i= 0°, surface irradiance E i is a function related to the power P of the laser. Thus at any point in time, the spatial distribution of the reflected intensity is fitted with the bidirectional reflectance distribution function using the measured data, and the reflected radiation luminance L r is integrated over the hemispherical space to obtain the amount of energy reflected by the metal material per unit time, thus calculating the change in the absorption rate of the laser energy by the material surface over time.

[0032] In addition, to achieve the above object, the application also provides a computer readable storage medium, which stores a laser cladding laser reflection intensity spatial array test program instruction for being executed by one or more processors to implement the steps of the laser cladding laser reflection intensity spatial array test method according to any one of claims 7-9.

[0033] (Three) beneficial effects

[0034] The laser reflection intensity test system of the application establishes a physical model of the laser reflection process through real-time measurement of the laser reflection intensity, thereby obtaining the dynamic absorption rate of the laser energy by the workpiece material in the laser cladding process, and providing a guarantee for the process quality control of laser thermal processing. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the application without imposing undue limitation thereon. In the drawings:

[0036] Figure 1 is a schematic diagram of the overall structure of the laser reflection intensity test system according to the embodiment of the application

[0037] Figure 2 is a schematic diagram of the signal line connection of the light intensity sensor according to the embodiment of the application

[0038] Figure 3 is a schematic diagram of the laser reflection light path according to the embodiment of the application

[0039] Figure 4 is a schematic diagram of the internal structure of the light intensity sensor according to the embodiment of the application

[0040] Figure 5 is a schematic diagram of the internal light path of the light intensity sensor according to the embodiment of the application

[0041] Figure 6 is a schematic diagram of the laser reflection coordinate system according to the embodiment of the application

[0042] Reference signs:

[0043] 1-Z-axis ball screw, 2-Laser head, 3-Laser processing platform, 4-Workpiece to be processed, 5-Data acquisition card, 6-Computer, 7-Y-axis ball screw, 8-X-axis ball screw, 9-Light intensity sensor, 9-1 to 9-8 are light intensity sensors arranged in different positions, 10-Light intensity sensor housing, 11-Photoelectric conversion module circuit board, 12-Circuit board mounting bolts, 13-Nuts, 14-Avalanche photodiode, 15-Lens mount, 16-Filter, 17-Plano-concave lens, 18-Mounting base plate, 19-Power cord, 20-Signal output cable DETAILED DESCRIPTION

[0044] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0045] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0046] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The illustrations only show components related to the present disclosure and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0047] The laser cladding laser reflection intensity spatial array test system of the embodiment of the present disclosure mainly includes a laser platform 3, a light intensity sensor 9, a data acquisition card 5 and a computer 6, wherein the light intensity sensor 9 is the main working component.

[0048] like Figure 1As shown, the overall structure of the laser reflection intensity testing system mainly includes a laser processing platform 3, an X-axis ball screw 8, a Y-axis ball screw 7, a Z-axis ball screw 1, a laser head 2, and a workpiece 4 to be processed. Among them, the X-axis and Y-axis ball screws 8 and 7 directly mounted on the platform can move the workpiece 4 to be processed fixed thereon to any position on the horizontal plane within a certain range, and the path and speed of the laser scanning can be set in the controller of the laser head. Both enable the workpiece 4 to complete horizontal displacement during the laser cladding process. The laser head 2 is fixed on the Z-axis ball screw 1, so that the laser head 2 can complete vertical displacement. Generally, when processing the workpiece 4 to be processed, the height of the laser head 2 is adjusted and fixed before laser processing, so during the laser scanning process, the position of the laser directly on the workpiece is fixed relative to the ground. Therefore, the reflection of the laser is a reflection of a fixed position point in space.

[0049] The data lines of each light intensity sensor 9 are connected, such as Figure 2 As shown, light intensity sensors 9 - 1 to 9 - 8 are connected to a data acquisition card 5 and transmit the collected data to a computer 6 .

[0050] Based on the reflection of laser at a fixed position, the measurement system arranges light intensity sensors 9 at different positions in space. Figure 3 As shown, the position of light intensity sensor 9 is determined primarily by the angle θ between the reflected light at the corresponding position and the horizontal plane, and the distance r from the laser reflection point to the light intensity sensor. Laser head 2 emits laser light onto the surface of workpiece 4 at an incident angle α. The laser light is reflected from the workpiece surface and enters light intensity sensor 9 at a reflection angle β. The distance r from the laser reflection point to the light intensity sensor is 1 / 2.

[0051] The light intensity sensor 9 is the main component of the measurement system, which is designed based on the principle of photoelectric conversion. Its internal structure is as follows: Figure 4 As shown, it includes a light intensity sensor housing 10, a mounting base 18, a photoelectric conversion module circuit board 11, a circuit board mounting bolt 12, a nut 13, an avalanche photodiode 14, a lens mount 15, a filter 16, a plano-concave lens 17, a power line 19 and a signal output line 20.

[0052] The laser acts on the surface of the workpiece 4, a part of it is absorbed by the material, and the rest is reflected by the surface of the workpiece and diffusely reflected to various places in the space. If the reflected light is directed to a small range in the space, the reflected light can be seen as a parallel beam. Figure 5 As shown, the reflected light passes through the filter 16 to filter out the ambient light and a portion of the thermal radiation generated by the heating of the workpiece, so that the light beam reaching the plano-concave lens 17 is closer to the laser reflected light; then the reflected light beam passes through the plano-concave lens 17 to focus on the receiving point of the avalanche photodiode 14 located at the focus of the lens 17.

[0053] The avalanche photodiode 14 is a PN junction type light detection diode that utilizes the avalanche multiplication effect of carriers to amplify the photoelectric signal to improve the detection sensitivity. Figure 5 When reflected light directed toward a specific point in space is focused on the receiving point of avalanche photodiode 14, it converts the received light signal into a photocurrent. This current is then converted, via photoelectric conversion module circuit 11, into a voltage output corresponding to the intensity of the reflected light at that point. This output voltage is connected to the input of data acquisition card 5 via signal output line 20. Data acquisition card 5 is connected to computer 6 via USB. Computer 6 can display and record the waveform of the signal input from data acquisition card 5 in real time, thereby obtaining the voltage value corresponding to the intensity of the reflected light.

[0054] Based on the reflection of laser at a fixed position, the measurement system arranges light intensity sensors 9 around the reflection point to measure the intensity of laser reflection in various directions in space, such as Figure 6 As shown. With the laser reflection point as the origin, a spherical coordinate system is established. Based on the angle θ between the reflected light at the corresponding position and the Z axis, the angle φ between its projection on the horizontal plane and the X axis, and the distance r between the center of the light intensity sensor's filter 16 and the reflection point, the position of the light intensity sensor in a certain direction can be determined, thereby measuring the voltage value corresponding to the reflection intensity in that direction.

[0055] By measuring the laser of the same wavelength with a specific intensity, the output voltage value of the light intensity sensor is calibrated with the intensity of the light it receives, and the relationship between its intensity / energy density and output voltage is obtained, thus obtaining accurate laser reflection intensity test results.

[0056] The bidirectional reflectance distribution function (BRDF) is used to describe the reflection characteristics of lasers. The bidirectional reflectance distribution function (BRDF) is expressed as follows:

[0057]

[0058] Where θ and φ are the zenith angle and distribution angle coordinates of the incident / reflected light in the spherical coordinate system, the subscripts i and r represent the incident and reflected light respectively, and λ is the wavelength of the light. Figure 6 As shown, the bidirectional reflectance distribution function f r The physical meaning is to express the surface irradiance E from the incident direction i The micro-increment and the reflected radiation brightness L caused by it in the reflected direction r The ratio between the micro increments.

[0059] Arrange several light intensity sensors in the spherical coordinate space to record the laser reflection intensity L in different directions of the test space. r , record the spherical coordinates r,θ of the sensor point r ,φ r ; and the laser head incident position is fixed θi =0°,φ i =0°, surface irradiance E i It is a function related to the laser power P. Therefore, at any point in time, the measured data can be used to fit the spatial distribution of the reflection intensity with the bidirectional reflectance distribution function, and the reflected radiation brightness L in the hemispherical space can be calculated. r The energy reflected by the metal material to the laser per unit time is obtained by integration, and the change of the absorption rate of the material surface to the laser energy over time is calculated from this.

[0060] The method of using the laser reflection intensity testing system according to the embodiment of the present invention is as follows:

[0061] Using the laser cladding platform as the test object, first secure each light intensity sensor 9 around the laser head 2 (eight sensors are shown in this figure as an example). Use a tripod bracket to secure the position of the light intensity sensors 9. Use a ruler to adjust the height of the light intensity sensors 9 and their distance from the laser reflection point. Use a guide laser light to calibrate the angle of the light intensity sensors 9, aligning the axis of the lens 17 directly with the laser reflection point on the workpiece 4. Record the spatial coordinates of each light intensity sensor 9. Each light intensity sensor 9 should correspond to a different reflection angle and distance to facilitate the development of a physical model of laser reflection.

[0062] After the fixation is completed, the data lines of each light intensity sensor 9 are connected, such as Figure 2 Connect the power line of the light intensity sensor 9 to a 10V DC power supply, and the signal line is directly connected to the input end of the data acquisition card 5, which is then connected to the computer 6 via a USB data line.

[0063] During the operation of the laser head 2, the computer 6 is operated to observe and record the change in the voltage value corresponding to the reflection intensity.

[0064] The recorded data is converted into light intensity through the relationship between intensity / energy density and output voltage. The measured data is fitted with the bidirectional reflectance distribution function to fit the spatial distribution of the reflected intensity, and the reflected radiation brightness L in the hemispherical space is calculated. r The energy reflected by the metal material to the laser per unit time is obtained by integration, and the change of the absorption rate of the material surface to the laser energy over time is calculated from this.

[0065] In addition, to achieve the above-mentioned purpose, an embodiment of the present invention also proposes a computer-readable storage medium, on which are stored program instructions for testing the spatial array of laser reflection intensity for laser cladding. The program instructions for testing the spatial array of laser reflection intensity for laser cladding can be executed by one or more processors to implement the steps of the method for testing the spatial array of laser reflection intensity for laser cladding as described in one of claims 7-9.

[0066] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A method for testing the spatial array of laser reflection intensity for laser cladding, characterized in that: The method comprises the following steps: S1: Fix the position of the light intensity sensor and place the workpiece to be processed. Specifically, it includes fixing each light intensity sensor around the laser head, adjusting the height of the light intensity sensor and the distance relative to the laser reflection point. Each light intensity sensor should correspond to a different reflection angle and distance to facilitate the establishment of the laser reflection physical model. Use the guide laser light to calibrate the angle of the light intensity sensor so that the lens axis is facing the reflection point of the laser on the workpiece; place the workpiece to be processed on the platform; S2: Connect the light intensity sensors. Specifically, connect the data lines of each light intensity sensor; connect the power lines of the light intensity sensors to the power supply, connect the signal lines to the input terminals of the data acquisition card, and connect the data acquisition card to the computer. S3: Obtaining light intensity sensor data. During the operation of the laser head, the computer records the changes in the voltage value corresponding to the reflection intensity. S4: Calculate the acquired sensor data to obtain the change of the absorption rate of the laser energy on the material surface over time; specifically including: The recorded data is converted into light intensity through the relationship between intensity or energy density and output voltage. The measured data is used to fit the spatial distribution of the reflection intensity using the bidirectional reflectance distribution function, and the energy of the laser reflected by the metal material per unit time is calculated. From this, the change in the absorption rate of the material surface to the laser energy over time is calculated.

2. The method for testing the laser reflection intensity spatial array for laser cladding according to claim 1, characterized in that: The energy of the laser reflection is obtained by integrating the reflected radiation brightness in the hemispherical space.

3. The method for testing the laser reflection intensity spatial array for laser cladding according to claim 2, characterized in that: The bidirectional reflectance distribution function is as follows: ； Where θ and φ are the zenith angle and distribution angle coordinates of the incident / reflected light in the spherical coordinate system, the subscripts i and r represent the incidence and reflection respectively, and λ is the wavelength of light; the bidirectional reflectance distribution function f r The physical meaning is to express the surface irradiance E from the incident direction i The micro-increment and the reflected radiation brightness L caused by it in the reflected direction r The ratio between the micro increments.

4. A spatial array test system for laser reflection intensity of laser cladding, characterized in that: The system is used to perform the testing method according to any one of claims 1 to 3, and the system includes: Laser platform, light intensity sensor, data acquisition card and computer; The laser platform is equipped with a workpiece to be processed and also includes XYZ-axis ball screws. The X-axis ball screw and the Y-axis ball screw are used to move the workpiece to be processed fixed thereon to any position on the horizontal plane within a certain range. The path and speed of the laser scanning can be set in the controller of the laser head. Both enable the workpiece to be processed to complete horizontal displacement during the laser cladding process. The laser head is fixed on the Z-axis ball screw, enabling the laser head to complete vertical displacement. The height of the laser head is adjusted and fixed before laser processing. The light intensity sensor includes multiple light intensity sensors arranged at different positions in the space. The light intensity sensors are arranged around the reflection point and are used to measure the intensity of the laser reflected in various directions in the space. The multiple light intensity sensors are respectively connected to the data acquisition card and transmit the collected data to the computer; The light intensity sensor includes a light intensity sensor housing, a mounting base, a photoelectric conversion module circuit board, circuit board mounting bolts, nuts, an avalanche photodiode, a lens mount, a filter, a plano-concave lens, a power line and a signal output line; The reflected light passes through the filter to filter out the ambient light and part of the thermal radiation generated by the heating of the workpiece, so that the light beam reaching the plano-concave lens is closer to the laser reflected light; then passes through the plano-concave lens to focus the reflected light beam on the receiving point of the avalanche photodiode located at the focus of the lens.

5. The laser reflection intensity spatial array test system for laser cladding according to claim 4, characterized in that: The test system also includes establishing a spherical coordinate system with the laser reflection point as the origin, determining the position of the light intensity sensor in a certain direction based on the angle between the reflected light at the corresponding position and the Z axis, the angle between its projection on the horizontal plane and the X axis, and the distance between the center of the filter of the light intensity sensor and the reflection point, thereby measuring the voltage value corresponding to the reflection intensity in that direction.

6. The laser reflection intensity spatial array test system for laser cladding according to claim 5, characterized in that: By measuring the laser of the same wavelength with a specific intensity, the output voltage value of the light intensity sensor is calibrated with the intensity of the light it receives, and the relationship between its intensity or energy density and output voltage is obtained, so as to obtain accurate laser reflection intensity test results.

7. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program instructions for testing the spatial array of laser reflection intensity for laser cladding, and the program instructions for testing the spatial array of laser reflection intensity for laser cladding can be executed by one or more processors to implement the steps of the method for testing the spatial array of laser reflection intensity for laser cladding as described in one of claims 1-3.

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