Sample rolling method during surface laser cleaning of metal material granular sample

Abstract

The invention relates to the technical field of laser cleaning, in particular to a sample rolling method during surface laser cleaning of a metal material granular sample, which comprises the following steps: preparing equipment for surface laser cleaning of the metal material granular sample, and setting parameters; debugging a furnace body, and preparing a metal material granular sample; the laser cleaning machine is adjusted and started; electromagnetic valve control parameters are set; carrying out laser cleaning, and rolling the sample; after cleaning is completed, the machine is automatically stopped; and inspecting the sample and carrying out subsequent treatment. When the surface of a granular sample is directly irradiated in a laser cleaning mode, the sample is turned over regularly according to a program to complete laser irradiation cleaning of all surfaces, the surface of the granular metal sample can be completely cleaned in the laser cleaning mode, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cleaning, in particular to a sample tumbling method during laser cleaning of the surface of a granular sample of a metal material. Background Art

[0002] Currently, to test the oxygen content of metal materials, the samples need to be processed into rods, and then removed from the surface of the rods by either physical grinding with a grinding wheel or chemical corrosion. The samples are then cut into particles and placed in an instrument to test the oxygen content. The entire process of physical grinding or chemical corrosion followed by ultrasonic cleaning with organic solvents during sample processing takes at least several minutes to more than ten minutes. These two methods are time-consuming and labor-intensive.

[0003] In summary, it is necessary to propose a sample tumbling method during laser cleaning of the surface of granular metal samples to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a sample tumbling method during laser cleaning of the surface of a granular sample of a metal material, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A sample tumbling method for laser cleaning of a metal material granular sample surface comprises the following steps:

[0007] S1. Prepare equipment for laser cleaning of the surface of granular metal samples and set parameters;

[0008] S2. Debug the furnace and prepare granular samples of metal materials;

[0009] S3. Adjust and start the laser cleaning machine;

[0010] S4. Set the solenoid valve control parameters;

[0011] S5. Perform laser cleaning and tumble the sample;

[0012] S6. Automatically shut down after cleaning is completed;

[0013] S7. Check the sample and perform subsequent processing.

[0014] Preferably, the surface laser cleaning equipment in step S1 includes a laser cleaning machine, a cylindrical furnace body containing a conical tray, a solenoid valve, an argon supply system, a control system and a sample tumbling monitoring device. The laser power of the laser cleaning machine is 200-300W, the wavelength is 1064nm, the pulse frequency is 0-100Hz, the spot size is 10-25mm, the scanning speed is 0-160mm / s, the diameter of the small hole at the bottom of the conical tray is 1-1.5mm, the working pressure of the solenoid valve is 0.45MPa, and the argon purity of the argon supply system is 99.999%.

[0015] Preferably, the implementation steps of step S2 are:

[0016] S2.1. Clean the inside of the cylindrical furnace to ensure there is no impurities;

[0017] S2.2. Fill the furnace with argon gas until the oxygen content in the furnace is less than 0.001% to maintain an inert gas environment;

[0018] S2.3. Place the metal material granular sample on the conical tray, ensuring that the sample can roll smoothly onto the small hole at the bottom of the tray.

[0019] Preferably, the implementation steps of step S3 are:

[0020] S3.1. Start the laser cleaning machine and adjust the laser parameters to the preset values;

[0021] S3.2. Aim the laser gun tip at the upper surface of the sample and prepare for irradiation.

[0022] 5. According to the sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 4, the implementation steps of step S4 are:

[0023] S4.1. Set the opening time and interval of the solenoid valve through the control system to control the blowing of argon gas;

[0024] S4.2. Initially, the solenoid valve is closed and the laser irradiates the sample surface.

[0025] Preferably, the implementation steps of step S5 are:

[0026] S5.1. When the laser irradiation reaches the set time, the control system opens the solenoid valve, and argon gas is blown out from the small hole at the bottom of the tray, causing the sample to tumble;

[0027] S5.2. After the sample is rolled over, the new surface faces upward and the laser gun head continues to irradiate the surface;

[0028] S5.3. The solenoid valve is closed, and the laser continues to irradiate the current surface. Repeat this process until all surfaces of the entire sample have been irradiated by the laser;

[0029] S5.4. The sample tumbling monitoring device monitors the tumbling state and position of the sample in real time to ensure that each surface can be irradiated by the laser.

[0030] Preferably, the implementation steps of step S6 are:

[0031] S6.1. When the control system detects that all surfaces have been cleaned, the laser cleaning machine and the solenoid valve are automatically turned off;

[0032] S6.2. Exhaust the argon gas in the furnace and take out the cleaned sample.

[0033] Preferably, the implementation steps of step S7 are:

[0034] S7.1. Carry out necessary inspections on the cleaned samples to ensure that the cleaning effect meets the requirements;

[0035] S7.2. Further process or store the sample as required for subsequent testing or analysis.

[0036] Preferably, the sample tumbling monitoring device of step S1 further comprises:

[0037] An image acquisition module, which uses a high-resolution camera or an infrared camera, is installed at an appropriate position of the furnace body to capture real-time images of the sample on the tray in all directions or at a specific angle, and is used to collect image data in real time during the tumbling process of the sample, providing a basis for subsequent image processing and analysis;

[0038] An image processing module, which processes the collected images using an edge detection image processing algorithm and a specialized FPGA image processing software to extract key information such as the contour, position, and rolling state of the sample, and provides data support for monitoring and control;

[0039] A state monitoring module, which compares the processed image data with a preset sample tumbling mode or state, and uses machine learning or pattern recognition technology to identify the current state of the sample, and is used to monitor the tumbling state of the sample in real time, including whether it has rolled in place, whether it is stuck, and whether the tumbling speed is appropriate, to ensure that the cleaning process proceeds smoothly;

[0040] A feedback control module, which connects the result of the state monitoring module with the solenoid valve and the laser cleaning machine through the control system to achieve real-time adjustment according to the sample tumbling state, and is used to timely adjust the opening time of the solenoid valve, the irradiation position or power parameter of the laser according to the monitored sample tumbling state, so as to ensure that each surface can be cleaned evenly and effectively;

[0041] The data recording and analysis module uses a database or a data recording system to store image data, processing results, and control instructions, and provides data analysis tools or report generation to record key data in the entire cleaning process, providing a basis for subsequent quality tracing, process optimization, or troubleshooting.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention directly irradiates the surface of the granular sample by laser cleaning, the sample is rolled over according to the program at a fixed time to complete the laser irradiation and cleaning of all surfaces, and the surface of the granular metal sample can be completely cleaned by laser cleaning, which is convenient and fast. Therefore, the present invention applies laser cleaning to the surface treatment of granular samples of metal materials, which greatly shortens the time compared to traditional physical grinding and chemical reagent corrosion. When the oxygen content of the metal granular sample is continuously tested with an oxygen analyzer, the time spent on sample preparation is shortened, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the process of tumbling a sample during laser cleaning according to the present invention is shown. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Example 1

[0046] See also Figure 1 The present invention provides a sample tumbling method for laser cleaning of the surface of a granular sample of a metal material, which specifically comprises the following steps:

[0047] S1. Prepare equipment for laser cleaning of the surface of granular metal samples and set parameters;

[0048] S2. Debug the furnace and prepare granular samples of metal materials;

[0049] S3. Adjust and start the laser cleaning machine;

[0050] S4. Set the solenoid valve control parameters;

[0051] S5. Perform laser cleaning and tumble the sample;

[0052] S6. Automatically shut down after cleaning is completed;

[0053] S7. Check the sample and perform subsequent processing.

[0054] In this embodiment, it should also be noted that the surface laser cleaning equipment in step S1 includes a laser cleaning machine, a cylindrical furnace body containing a conical tray, a solenoid valve, an argon supply system, a control system and a sample tumbling monitoring device. The laser power of the laser cleaning machine is 200-300W, the wavelength is 1064nm, the pulse frequency is 0-100Hz, the spot size is 10-25mm, the scanning speed is 0-160mm / s, the diameter of the small hole at the bottom of the conical tray is 1-1.5mm, the working pressure of the solenoid valve is 0.45MPa, and the argon purity of the argon supply system is 99.999%.

[0055] In this embodiment, it should be noted that the implementation steps of step S2 are:

[0056] S2.1. Clean the inside of the cylindrical furnace to ensure there is no impurities;

[0057] S2.2. Fill the furnace with argon gas until the oxygen content in the furnace is less than 0.001% to maintain an inert gas environment;

[0058] S2.3. Place the metal material granular sample on the conical tray, ensuring that the sample can roll smoothly onto the small hole at the bottom of the tray.

[0059] In this embodiment, it should be noted that the implementation steps of step S3 are:

[0060] S3.1. Start the laser cleaning machine and adjust the laser parameters to the preset values;

[0061] S3.2. Aim the laser gun tip at the upper surface of the sample and prepare for irradiation.

[0062] 5. According to the sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 4, the implementation steps of step S4 are:

[0063] S4.1. Set the opening time and interval of the solenoid valve through the control system to control the blowing of argon gas;

[0064] S4.2. Initially, the solenoid valve is closed and the laser irradiates the sample surface.

[0065] In this embodiment, it should be noted that the implementation steps of step S5 are:

[0066] S5.1. When the laser irradiation reaches the set time, the control system opens the solenoid valve, and argon gas is blown out from the small hole at the bottom of the tray, causing the sample to tumble;

[0067] S5.2. After the sample is rolled over, the new surface faces upward and the laser gun head continues to irradiate the surface;

[0068] S5.3. The solenoid valve is closed, and the laser continues to irradiate the current surface. Repeat this process until all surfaces of the entire sample have been irradiated by the laser;

[0069] S5.4. The sample tumbling monitoring device monitors the tumbling state and position of the sample in real time to ensure that each surface can be irradiated by the laser.

[0070] In this embodiment, it should be noted that the implementation steps of step S6 are:

[0071] S6.1. When the control system detects that all surfaces have been cleaned, the laser cleaning machine and the solenoid valve are automatically turned off;

[0072] S6.2. Exhaust the argon gas in the furnace and take out the cleaned sample.

[0073] In this embodiment, it should be noted that the implementation steps of step S7 are:

[0074] S7.1. Carry out necessary inspections on the cleaned samples to ensure that the cleaning effect meets the requirements;

[0075] S7.2. Further process or store the sample as required for subsequent testing or analysis.

[0076] In this embodiment, it should also be noted that the sample tumbling monitoring device in step S1 further includes:

[0077] Image acquisition module: The image acquisition module uses a high-resolution camera or infrared camera, which is installed at an appropriate position on the furnace body to capture real-time images of samples on the tray in all directions or at specific angles. It is used to collect image data in real time during the tumbling process of the samples, providing a basis for subsequent image processing and analysis;

[0078] Image processing module: The image processing module processes the collected images using edge detection image processing algorithms and specialized FPGA image processing software to extract key information such as the sample's contour, position, and rolling state, providing data support for monitoring and control;

[0079] The state monitoring module compares the processed image data with the preset sample tumbling mode or state, and uses machine learning or pattern recognition technology to identify the current state of the sample. It is used to monitor the tumbling state of the sample in real time, including whether it has rolled in place, whether it is stuck, and whether the tumbling speed is appropriate, to ensure the smooth progress of the cleaning process;

[0080] Feedback control module: the feedback control module connects the result of the state monitoring module with the solenoid valve and the laser cleaning machine through the control system to realize real-time adjustment according to the sample tumbling state. The feedback control module is used to timely adjust the opening time of the solenoid valve, the irradiation position or the power parameter of the laser according to the monitored sample tumbling state to ensure that each surface can be cleaned evenly and effectively.

[0081] Data recording and analysis module: The data recording and analysis module uses a database or data recording system to store image data, processing results, and control instructions, and provides data analysis tools or report generation to record key data in the entire cleaning process, providing a basis for subsequent quality tracing, process optimization, or troubleshooting.

[0082] Example 2

[0083] See also Figure 1 , wherein A is the laser irradiation direction, B is the sample, C is the irradiation surface, D is the vent, E is the direction of the small airflow, F is the direction of the large airflow, and G is the direction of the airflow stop. In the actual application process, during the laser cleaning of the surface of the granular sample of the metal material, the sample tumbling method, laser cleaning and sample tumbling, specifically include the following steps:

[0084] See also Figure 1 In (a), first, the laser gun head of the laser cleaning machine is aimed at the surface of the upper part of the sample for irradiation. There is a small hole controlled by a solenoid valve on the conical tray below the sample, ready for the tumbling operation. When the laser cleaning starts, the solenoid valve is closed, which is the stage of laser irradiation on the sample surface;

[0085] See also Figure 1 In (b), the laser cleaning machine is started, and the laser parameters are adjusted to an appropriate range. The opening time and interval of the solenoid valve are set through the control system to control the blowing of argon gas. After the laser irradiates for a period of time, the solenoid valve is opened, and argon gas is blown out from the small hole at the bottom of the tray. The sample is blown up and tumbles. At this time, the ventilation hole controlled by the solenoid valve still exists, and the sample tumbles under the action of the airflow according to the blowing direction of the airflow in the figure. The laser gun head continues to irradiate the new upward surface, which is a process of sample tumbling and continuous laser irradiation.

[0086] See also Figure 1 In (c), after the sample tumbles under the action of argon gas, it randomly changes to face up. At this time, the laser gun head continues to irradiate the surface for cleaning. After the sample tumbles, the new surface is irradiated by the laser.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample tumbling method for laser cleaning of the surface of a metal material granular sample, characterized in that: The following steps are involved: S1. Prepare equipment for laser cleaning of the surface of granular metal samples and set parameters; S2. Debug the furnace and prepare granular samples of metal materials; S3. Adjust and start the laser cleaning machine; S4. Set the solenoid valve control parameters; S5. Perform laser cleaning and tumble the sample; S6. Automatically shut down after cleaning is completed; S7. Check the sample and perform subsequent processing.

2. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 1, characterized in that: The surface laser cleaning equipment in step S1 includes a laser cleaning machine, a cylindrical furnace body containing a conical tray, a solenoid valve, an argon supply system, a control system and a sample tumbling monitoring device. The laser cleaning machine has a laser power of 200-300 W, a wavelength of 1064 nm, a pulse frequency of 0-100 Hz, a spot size of 10-25 mm, a scanning speed of 0-160 mm / s, a bottom hole diameter of the conical tray of 1-1.5 mm, a working pressure of the solenoid valve of 0.45 MPa, and an argon purity of 99.999% in the argon supply system.

3. The sample tumbling method for laser cleaning of a metal material granular sample surface according to claim 2, characterized in that , the implementation steps of step S2 are: S2.

1. Clean the inside of the cylindrical furnace to ensure there is no impurities; S2.

2. Fill the furnace with argon gas until the oxygen content in the furnace is less than 0.001% to maintain an inert gas environment; S2.

3. Place the metal material granular sample on the conical tray, ensuring that the sample can roll smoothly onto the small hole at the bottom of the tray.

4. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 3 is characterized in that: The implementation steps of step S3 are: S3.

1. Start the laser cleaning machine and adjust the laser parameters to the preset values; S3.

2. Aim the laser gun tip at the upper surface of the sample and prepare for irradiation.

5. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 4, characterized in that: The implementation steps of step S4 are: S4.

1. Set the opening time and interval of the solenoid valve through the control system to control the blowing of argon gas; S4.

2. Initially, the solenoid valve is closed and the laser irradiates the sample surface.

6. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 5, characterized in that: The implementation steps of step S5 are: S5.

1. When the laser irradiation reaches the set time, the control system opens the solenoid valve, and argon gas is blown out from the small hole at the bottom of the tray, causing the sample to tumble; S5.

2. After the sample is rolled over, the new surface faces upward and the laser gun head continues to irradiate the surface; S5.

3. The solenoid valve is closed, and the laser continues to irradiate the current surface. Repeat this process until all surfaces of the entire sample have been irradiated by the laser; S5.

4. The sample tumbling monitoring device monitors the tumbling state and position of the sample in real time to ensure that each surface can be irradiated by the laser.

7. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 6, characterized in that: The implementation steps of step S6 are: S6.

1. When the control system detects that all surfaces have been cleaned, the laser cleaning machine and the solenoid valve are automatically turned off; S6.

2. Exhaust the argon gas in the furnace and take out the cleaned sample.

8. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 7, characterized in that: The implementation steps of step S7 are: S7.

1. Carry out necessary inspections on the cleaned samples to ensure that the cleaning effect meets the requirements; S7.

2. Further process or store the sample as required for subsequent testing or analysis.

9. The sample tumbling method for laser cleaning of the surface of a metal material granular sample according to claim 8, characterized in that: The sample tumbling monitoring device of step S1 further comprises: An image acquisition module, which uses a high-resolution camera or an infrared camera, is installed at an appropriate position of the furnace body to capture real-time images of the sample on the tray in all directions or at a specific angle, and is used to collect image data in real time during the tumbling process of the sample, providing a basis for subsequent image processing and analysis; An image processing module, which processes the collected images using an edge detection image processing algorithm and a specialized FPGA image processing software to extract key information such as the contour, position, and rolling state of the sample, and provides data support for monitoring and control; A state monitoring module, which compares the processed image data with a preset sample tumbling mode or state, and uses machine learning or pattern recognition technology to identify the current state of the sample, and is used to monitor the tumbling state of the sample in real time, including whether it has rolled in place, whether it is stuck, and whether the tumbling speed is appropriate, to ensure that the cleaning process proceeds smoothly; A feedback control module, which connects the result of the state monitoring module with the solenoid valve and the laser cleaning machine through the control system to achieve real-time adjustment according to the sample tumbling state, and is used to timely adjust the opening time of the solenoid valve, the irradiation position or power parameter of the laser according to the monitored sample tumbling state, so as to ensure that each surface can be cleaned evenly and effectively; The data recording and analysis module uses a database or a data recording system to store image data, processing results, and control instructions, and provides data analysis tools or report generation to record key data in the entire cleaning process, providing a basis for subsequent quality tracing, process optimization, or troubleshooting.

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