A multi-link automatic sampling, sample grinding and intelligent detection system and method for steelmaking

Abstract

The application discloses a kind of steelmaking multi-link automatic sampling, sample grinding and intelligent detection system and method, and relates to the technical field of automated detection.The application is sampled by multi-link automatic sampling module, and the molten steel samples of each link are synchronously collected according to the preset conditions.The collected samples are transmitted to the laboratory through airtight conveying pipeline, and the atmosphere is protected by inert gas during the transmission process.The sample transfer robot transfers the samples to the automatic sample grinding device for surface grinding treatment and cleaning, and then transfers the ground samples to the spectral detection position for composition analysis.The detection data is corrected to eliminate system error, the relative standard deviation of each element is calculated to evaluate the detection repeatability, and the re-detection is automatically triggered when the relative standard deviation is higher than the preset threshold.The standardized detection report is generated and uploaded to the production management system in real time.The application realizes the full-process automation closed-loop control of steelmaking detection, effectively improves the detection efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of automated testing technology, specifically to an automated sampling, grinding, and intelligent testing system and method for multiple stages of steelmaking. Background Technology

[0002] In the steel smelting and production process, rapid and accurate detection of the steel composition is a core aspect of ensuring steel quality. During steelmaking, samples of molten steel need to be taken and their composition analyzed at several key locations, including the auxiliary lance station, the tapping port after the furnace, the refining furnace outlet, and the tundish area of ​​the continuous casting machine, in order to monitor the steel quality status in real time and guide process adjustments.

[0003] Currently, the above-mentioned multi-stage steel sampling, sample preparation, and testing work generally rely on manual operation or semi-automated equipment, which has the following technical defects:

[0004] Firstly, the sampling process relies on manual operation, which is inefficient and poses safety hazards. The working environment at positions such as the steelmaking auxiliary lance, the furnace back, and the continuous casting machine ladle is harsh, with risks such as high temperatures, dust, and molten steel splashes. Manual sampling is not only labor-intensive and dangerous, but also makes it difficult to ensure consistency in sampling timing and location. Differences in the techniques and experience of different operators lead to insufficient representativeness and consistency of samples, affecting the reliability of subsequent test results.

[0005] Secondly, the sample transfer process lacks efficient and non-destructive methods. In the traditional model, molten steel samples collected at each stage must be manually transported from the sampling point to the centralized laboratory, resulting in long and time-consuming transport routes. Simultaneously, the samples are exposed to an open environment, where the high-temperature molten steel samples easily react with oxygen in the air, leading to surface oxidation and changes in composition. This significantly affects the detection of easily oxidized elements such as carbon and silicon, causing data distortion.

[0006] Third, the intelligence level of testing data management is insufficient, and information feedback is lagging. After the spectrometer test is completed, the test results are usually output in the form of paper reports or independent electronic documents, which need to be manually entered or imported into the production management system. This results in low data flow efficiency and is prone to errors. Production managers cannot obtain testing data from multiple stages in real time, making it difficult to detect abnormal fluctuations in molten steel quality and make timely process adjustments, thus hindering the improvement of the steelmaking process control level. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides an automated sampling, grinding, and intelligent detection system and method for multiple stages of steelmaking. It achieves full automation of the steelmaking sampling, transmission, grinding, and detection process, eliminates human error, provides real-time data feedback to guide production, and improves detection efficiency and product quality, thus solving the aforementioned technical problems.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An automated sampling, grinding, and intelligent testing system for multiple stages of steelmaking includes a multi-stage automated sampling module, a sample transmission module, and an automated laboratory testing module.

[0010] The multi-stage automatic sampling module includes an automatic sampling unit for steelmaking auxiliary lances, an automatic sampling unit after the furnace, and an automatic sampling unit for continuous casting machine tundish. Each of the sampling units is used to automatically collect molten steel samples according to preset conditions during the smelting process.

[0011] The sample transfer module connects the multi-stage automatic sampling module and the laboratory automated detection module, and is used to transport the samples collected at each stage to the laboratory.

[0012] The automated testing module includes an automatic sample grinding device, a sample transfer robot, a spectral detection device, and a data generation and transmission unit. The automatic sample grinding device is used to automatically fix and surface-treat the sample. The sample transfer robot is used to transfer the sample to the automatic sample grinding device and place the ground sample on the spectral detection device. The spectral detection device is used to perform component analysis on the ground sample and output test data. The data generation and transmission unit automatically generates test results based on the test data, generates a standardized test report based on the test results, and sends it to the production management system via industrial Ethernet.

[0013] As a preferred embodiment of the present invention, the automatic sampling unit of the steelmaking auxiliary lance is set at the steelmaking auxiliary lance station. The automatic sampling unit of the steelmaking auxiliary lance is integrated into the auxiliary lance equipment and includes a sampling execution mechanism, a sensor assembly and a controller. The sensor assembly is used to collect smelting process parameters during the sampling process, including temperature and pressure parameters. The controller adjusts the sampling strategy in real time according to the smelting process parameters. The sampling execution mechanism is used to collect molten steel samples.

[0014] As a preferred embodiment of the present invention, the automatic sampling unit after the furnace is disposed at the steel tapping port and the refining furnace outlet. The automatic sampling unit after the furnace includes a robotic arm sampling mechanism and a pipeline sampling mechanism. The robotic arm sampling mechanism is used for sample grabbing, and the pipeline sampling mechanism is used for sample transmission.

[0015] As a preferred embodiment of the present invention, the automatic sampling unit of the tundish of the continuous casting machine is set in the tundish area of ​​the continuous casting machine. The automatic sampling unit of the tundish of the continuous casting machine is used to automatically adjust the sampling frequency according to the operating status of the continuous casting machine and collect molten steel samples.

[0016] As a preferred embodiment of the present invention, the sample transfer module includes a closed delivery pipeline, and the closed delivery pipeline is provided with an inert gas protection device for introducing inert gas into the pipeline to isolate air.

[0017] As a preferred embodiment of the present invention, the automatic sample grinding device includes a sample fixing mechanism, a grinding mechanism and a cleaning mechanism. The cleaning mechanism is used to remove residues from the sample surface after grinding. The sample transfer robot is a six-axis industrial robotic arm and the spectral detection device is a multi-channel spectrometer.

[0018] As a preferred embodiment of the present invention, the data generation and transmission unit automatically generates detection results based on the detection data, comprising the following steps:

[0019] Step A1: Correct the detection data to obtain the corrected detection data;

[0020] Step A2: Based on the corrected data, obtain the relative standard deviation of each element. ;

[0021] Step A3: Determine whether the element content is qualified based on the relative standard deviation of each element. Specifically, when the relative standard deviation of the element... When the value exceeds the preset threshold, the system will automatically alert to the abnormality and issue a retest command to the automatic grinding device, sample transfer robot, and spectral detection device to re-execute the grinding and testing process.

[0022] As a preferred embodiment of the present invention, the relevant expression for correcting the detection data in step A1 is as follows:

[0023] ;

[0024] ;

[0025] in, Indicates the first Mass fraction of the elements; Indicates the first Sensitivity coefficient of a certain element; Indicates the first The intercept of a species element; The number of measurements taken by the spectrometer Net intensity of characteristic spectral lines of a species; Indicates the first The corrected concentration values ​​of the elements; Indicates the first The offset of an element is expressed as follows:

[0026] ;

[0027] in, Indicates the first Standard concentrations of the elements; The number of measurements taken by the spectrometer The measured concentration of each element.

[0028] As a preferred embodiment of the present invention, the expression for the relative standard deviation in step A2 is as follows:

[0029] ;

[0030] in, Indicates the first The relative standard deviation of the elements; Indicates the first Standard deviation of multiple detection results for a single element; Indicates the first The average value of multiple tests for a given element.

[0031] This invention also provides an automatic sampling, grinding, and intelligent detection method for multiple stages of steelmaking, comprising the following steps:

[0032] S1: Collect molten steel samples from each stage through a multi-stage automatic sampling module;

[0033] S2: The collected samples are transported to the laboratory through a closed pipeline, and the samples are protected by an atmosphere during the transport process.

[0034] S3: The sample is transferred to the automatic grinding device by the sample transfer robot. The automatic grinding device grinds the sample surface according to the preset grinding parameters. After completion, the cleaning mechanism removes the residue on the sample surface.

[0035] S4: The sample transfer robot transfers the ground sample to the spectral detection position, and the spectral detection device is activated to perform component analysis on the sample and obtain the content data of each element.

[0036] S5: Analyze the test data, obtain the test results, generate a test report, and upload it to the production management system in real time.

[0037] Compared with existing technologies, this invention provides an automated sampling, grinding, and intelligent detection system and method for multiple stages of steelmaking, which has the following beneficial effects:

[0038] 1. This invention achieves fully automated collection of molten steel samples from multiple stages of steelmaking by setting up automatic sampling units for steelmaking auxiliary lances, furnace post-sampling, and continuous casting machine tundish in the multi-stage automatic sampling module. This replaces the traditional manual sampling method, avoids personnel safety risks in high-temperature and harsh environments, and eliminates the problems of inconsistent sampling timing and insufficient sample representativeness caused by manual operation, thereby improving the standardization and reliability of sampling.

[0039] 2. This invention uses a data generation and transmission unit to correct the detection data, establish a quantitative relationship between spectral intensity and elemental concentration, and combine it with standard samples to correct offsets. This effectively eliminates systematic errors caused by factors such as instrument aging, temperature drift, and optical system contamination, ensuring the accuracy and traceability of the detection data. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the system of the present invention;

[0041] Figure 2 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1 An automated sampling, grinding, and intelligent testing system for multiple stages of steelmaking includes: an automated sampling module, a sample transmission module, and an automated laboratory testing module.

[0044] The multi-stage automatic sampling module includes an automatic sampling unit for the steelmaking auxiliary lance, an automatic sampling unit after the furnace, and an automatic sampling unit for the continuous casting machine tundish. Each sampling unit is used to automatically collect molten steel samples according to preset conditions during the smelting process.

[0045] The automatic sampling unit for steelmaking auxiliary lances is installed at the steelmaking auxiliary lance station. Integrated into the auxiliary lance equipment, the unit includes a sampling actuator, sensor components, and a controller. The sensor components are used to collect smelting process parameters during the sampling process, including temperature and pressure parameters. The controller adjusts the sampling strategy in real time according to the smelting process parameters. The sampling actuator is used to collect molten steel samples. This unit is equipped with advanced sensors and a control system, enabling it to adjust the sampling strategy in real time according to the smelting process parameters, ensuring the accuracy and representativeness of the samples.

[0046] The automatic sampling unit after the furnace is set at the tapping port and the refining furnace outlet. The automatic sampling unit after the furnace includes a robotic arm sampling mechanism and a pipeline sampling mechanism. The robotic arm sampling mechanism is used for sample grabbing. The robotic arm has high-precision motion control and grabbing ability and can adapt to different working conditions. The pipeline sampling mechanism is used for sample transmission. The pipeline sampling mechanism adopts special materials and design to ensure the stability and integrity of the sample during transmission.

[0047] The automatic sampling unit of the tundish in the continuous casting machine is set in the tundish area of ​​the continuous casting machine. The automatic sampling unit of the tundish in the continuous casting machine is used to automatically adjust the sampling frequency according to the operating status of the continuous casting machine and collect molten steel samples. This unit can automatically adjust the sampling frequency and method according to the operating status and production rhythm of the continuous casting machine to ensure that the samples can reflect the quality status of the molten steel in a timely manner.

[0048] The sample transfer module connects the multi-stage automatic sampling module and the laboratory automated detection module, and is used to transport the samples collected at each stage to the laboratory.

[0049] The sample transfer module includes a closed-loop delivery pipeline with an inert gas protection device inside. This device introduces inert gas into the pipeline to isolate it from air. The closed-loop pipeline has good sealing and corrosion resistance, which can effectively prevent sample leakage and contamination. The inert gas protection transfer device prevents the sample from reacting with air by introducing inert gas into the pipeline, thus ensuring the stability of the sample composition.

[0050] The automated testing module includes an automatic sample grinding device, a sample transfer robot, a spectral detection device, and a data generation and transmission unit. The automatic sample grinding device is used to automatically fix and surface-treat the sample. The sample transfer robot is used to transfer the sample to the automatic sample grinding device and place the ground sample on the spectral detection device. The spectral detection device is used to perform component analysis on the ground sample and output test data. The data generation and transmission unit automatically generates test results based on the test data and generates a standardized test report based on the test results, which is then sent to the generation management system via industrial Ethernet.

[0051] The automated sample grinding device includes a sample fixing mechanism, a grinding mechanism, and a cleaning mechanism. The cleaning mechanism removes residues from the sample surface after grinding. The automated sample grinding device employs a high-precision grinding mechanism, such as a belt sander, grinding wheel machine, or laser grinding equipment. This device can automatically fix the sample and remove the oxide layer or impurities from the sample surface according to preset parameters (such as grinding depth and speed). After grinding, it can also automatically clean the sample surface to avoid residual particles affecting the detection accuracy. The sample transfer robot is a six-axis industrial robotic arm, and the spectral detection device is a multi-channel spectrometer. The six-axis robotic arm has high flexibility and precision, and can move freely in three-dimensional space to achieve rapid and accurate sample grasping and placement. The spectrometer performs rapid detection of sample components and can detect elements such as C, Si, Mn, P, and S. The spectrometer has high resolution and high sensitivity, and can quickly and accurately analyze the composition of the sample.

[0052] The data generation and transmission unit automatically generates detection results based on the detection data, including the following steps:

[0053] Step A1: Correct the detection data to obtain the corrected detection data. The relevant expression is as follows:

[0054] ;

[0055] ;

[0056] in, Indicates the first Mass fraction of the elements; Indicates the first Sensitivity coefficient of a certain element; Indicates the first The intercept of a species element; The number of measurements taken by the spectrometer Net intensity of characteristic spectral lines of a species; Indicates the first The corrected concentration values ​​of the elements; Indicates the first The offset of an element is expressed as follows:

[0057] ;

[0058] in, Indicates the first Standard concentrations of the elements; The number of measurements taken by the spectrometer The measured concentration of each element.

[0059] Step A2: Based on the corrected data, obtain the relative standard deviation of each element. Its expression is as follows:

[0060] ;

[0061] in, Indicates the first The relative standard deviation of the elements; Indicates the first Standard deviation of multiple detection results for a single element; Indicates the first The average value of multiple detection results for a given element;

[0062] By introducing offset Real-time compensation of the original calculation results can effectively eliminate systematic errors caused by factors such as instrument aging, temperature drift, and optical system contamination. This ensures good consistency of the test results of the same standard sample at different time points or on different instruments, avoiding systematic deviations in the test data of the same batch of samples due to changes in instrument status. This guarantees the traceability and reliability of the test results. Only after correction can the test data enter the subsequent repeatability evaluation, trend analysis, and report generation stages, ensuring that the data uploaded to the production management system truly reflects the quality status of molten steel and provides an accurate and reliable basis for production process adjustments.

[0063] Through quantitative calculation By comparing the data with a preset threshold, the system can automatically identify invalid test data caused by poor sample surface grinding quality, deviation of spectral excitation point position, fluctuation of instrument status, etc., thus avoiding uploading unreliable data to the production management system and misleading process decisions. This ensures the authenticity and reliability of the test report from the source of the data.

[0064] Step A3: Determine whether the element content is qualified based on the relative standard deviation of each element. Specifically, when the relative standard deviation of the element... When the value exceeds the preset threshold, the system will automatically alert to the abnormality and issue a retest command to the automatic grinding device, sample transfer robot, and spectral detection device to re-execute the grinding and testing process.

[0065] Please see Figure 2 The present invention also provides an automatic sampling, grinding, and intelligent detection method for multiple stages of steelmaking, comprising the following steps:

[0066] S1: Collect molten steel samples from each stage through a multi-stage automatic sampling module;

[0067] S2: The collected samples are transported to the laboratory through a closed pipeline, and the samples are protected by an atmosphere during the transport process.

[0068] S3: The sample transfer robot transfers the collected sample to the automatic grinding device. The automatic grinding device grinds the sample surface according to the preset grinding parameters. After completion, the cleaning mechanism removes the residue from the sample surface.

[0069] S4: The sample transfer robot transfers the ground sample to the spectral detection position, and the spectral detection device is activated to perform component analysis on the sample and obtain the content data of each element.

[0070] S5: Analyze the test data, obtain the test results, generate a test report, and upload it to the production management system in real time.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage automatic sampling, grinding, and intelligent detection system for steelmaking, characterized in that: It includes a multi-stage automatic sampling module, a sample transfer module, and a laboratory automated testing module; The multi-stage automatic sampling module includes an automatic sampling unit for steelmaking auxiliary lances, an automatic sampling unit after the furnace, and an automatic sampling unit for continuous casting machine tundish. Each of the sampling units is used to automatically collect molten steel samples according to preset conditions during the smelting process. The sample transfer module connects the multi-stage automatic sampling module and the laboratory automated detection module, and is used to transport the samples collected at each stage to the laboratory. The automated testing module includes an automatic sample grinding device, a sample transfer robot, a spectral detection device, and a data generation and transmission unit. The automatic sample grinding device is used to automatically fix and surface-treat the sample. The sample transfer robot is used to transfer the sample to the automatic sample grinding device and place the ground sample on the spectral detection device. The spectral detection device is used to perform component analysis on the ground sample and output test data. The data generation and transmission unit automatically generates test results based on the test data, generates a standardized test report based on the test results, and sends it to the production management system via industrial Ethernet.

2. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The automatic sampling unit for the steelmaking auxiliary lance is installed at the steelmaking auxiliary lance station and is integrated into the auxiliary lance equipment. It includes a sampling execution mechanism, a sensor assembly, and a controller. The sensor assembly is used to collect smelting process parameters during the sampling process, including temperature and pressure parameters. The controller adjusts the sampling strategy in real time according to the smelting process parameters. The sampling execution mechanism is used to collect molten steel samples.

3. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The automatic sampling unit after the furnace is installed at the steel tapping port and the refining furnace outlet. The automatic sampling unit after the furnace includes a robotic arm sampling mechanism and a pipeline sampling mechanism. The robotic arm sampling mechanism is used for sample grabbing, and the pipeline sampling mechanism is used for sample transfer.

4. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The automatic sampling unit of the tundish in the continuous casting machine is set in the tundish area of ​​the continuous casting machine. The automatic sampling unit of the tundish in the continuous casting machine is used to automatically adjust the sampling frequency according to the operating status of the continuous casting machine and collect molten steel samples.

5. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The sample transfer module includes a sealed delivery pipeline, which is equipped with an inert gas protection device for introducing inert gas into the pipeline to isolate it from air.

6. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The automatic sample grinding device includes a sample fixing mechanism, a grinding mechanism, and a cleaning mechanism. The cleaning mechanism is used to remove residues from the sample surface after grinding. The sample transfer robot is a six-axis industrial robotic arm, and the spectral detection device is a multi-channel spectrometer.

7. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 1, characterized in that: The data generation and transmission unit automatically generates detection results based on the detection data, including the following steps: Step A1: Correct the detection data to obtain the corrected detection data; Step A2: Based on the corrected data, obtain the relative standard deviation of each element. ; Step A3: Determine whether the element content is qualified based on the relative standard deviation of each element. Specifically, when the relative standard deviation of the element... When the value exceeds the preset threshold, the system will automatically alert to the abnormality and issue a retest command to the automatic grinding device, sample transfer robot, and spectral detection device to re-execute the grinding and testing process.

8. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in claim 7, characterized in that: The relevant expression for correcting the detection data in step A1 is as follows: ； ； in, Indicates the first Mass fraction of the elements; Indicates the first Sensitivity coefficient of a certain element; Indicates the first The intercept of a species element; The first value measured by the spectrometer Net intensity of characteristic spectral lines of a species; Indicates the first The corrected concentration values ​​of the elements; Indicates the first The offset of an element is expressed as follows: ； in, Indicates the first Standard concentrations of the elements; The first value measured by the spectrometer Measured concentrations of the elements.

9. The automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking according to claim 7, characterized in that: The expression for the relative standard deviation in step A2 is as follows: ； in, Indicates the first The relative standard deviation of the elements; Indicates the first Standard deviation of multiple detection results for a single element; Indicates the first The average value of multiple tests for a given element.

10. A method for automatic sampling, grinding, and intelligent detection in multiple stages of steelmaking, based on the automatic sampling, grinding, and intelligent detection system for multiple stages of steelmaking as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Collect molten steel samples from each stage through a multi-stage automatic sampling module; S2: The collected samples are transported to the laboratory through a closed pipeline, and the samples are protected by an atmosphere during the transport process. S3: The sample is transferred to the automatic grinding device by the sample transfer robot. The automatic grinding device grinds the sample surface according to the preset grinding parameters. After completion, the cleaning mechanism removes the residue on the sample surface. S4: The sample transfer robot transfers the ground sample to the spectral detection position, and the spectral detection device is activated to perform component analysis on the sample and obtain the content data of each element. S5: Analyze the test data, obtain the test results, generate a test report, and upload it to the production management system in real time.

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