108 results about "Phased array ultrasonics" patented technology

The invention discloses an underwater pouring concrete defect detection device, relates to the technical field of engineering detection, and particularly aims to solve the problems that an existing underwater pouring concrete defect detection method is limited by water medium attenuation, surface irregularity, concrete material characteristics and the like, and the detection efficiency is low. Therefore, the problems of unclear imaging, insufficient coverage and difficult effective acquisition and identification of defect signals are solved. The device is characterized by comprising an underwater operation platform, a multi-mode acoustic detection module integrated with a phased array ultrasonic and acoustic emission sensor array, a self-adaptive acoustic coupling mechanism, a high-precision positioning and three-dimensional scanning module and an intelligent data acquisition and processing unit. By adopting the technical scheme, efficient, accurate and reliable detection and three-dimensional positioning of internal and surface defects of the underwater pouring concrete structure are realized, and the underwater pouring concrete structure detection system has high detection precision, high applicability, high automation degree and good environmental robustness.

The invention relates to a method for detecting microcracks on the inner wall of a wall enclosure superheater of a boiler. The method comprises the following steps: macroscopically identifying and preliminarily screening a high-risk area; creating an endoscope channel based on the primary suspicious area list and performing primary peeping on the inner wall; carrying out detection surface preparation and acoustic coupling optimization; data acquisition is carried out through accurate arrangement of the small-sound-velocity self-coupling phased array ultrasonic probe; extracting defect signal features and carrying out three-dimensional digital modeling; performing crack depth accurate quantization based on a time of flight diffraction mode; carrying out comprehensive data analysis and evaluating a security level; and integrating detection results, and generating a digital file based on the results. According to the invention, standardization of the detection process and systematization of data management can be realized, the detection efficiency and accuracy are greatly improved, a scientific basis is provided for equipment life prediction and maintenance decision, and the safe operation level of the boiler is effectively improved.

The invention relates to the technical field of tee joint repairing, and particularly discloses a final-stage superheater tee joint repairing device and method.The method comprises the steps that magnetic powder detection and phased array ultrasonic detection are adopted, defective weld joints of a final-stage superheater tee joint are detected, and the number, length and depth of crack defects are determined; on the basis of defect conditions detected in magnetic powder detection and phased array ultrasonic detection, a defect elimination mode is evaluated, and a U-shaped repair welding groove is prepared by polishing an area subjected to defect elimination; u-steel is adopted for fixing the positions, 2000 mm away from the two sides of a tee joint of the superheater tee joint collecting box, of the tee joint, and meanwhile a connecting pipe, connected with a main steam pipeline, of the tee joint is fixed to the position 300-350 mm away from a large cover wall; compared with the conventional single detection means, the combined detection mode of magnetic powder detection and phased array ultrasonic detection can comprehensively confirm the number, length, depth and specific position of crack defects, avoids the defect which is left in a detection blind area and is not cleared, and reduces the risk of secondary cracking after repair from the source.

This disclosure provides a wedge and design method for a multipath acoustic attenuation phased array ultrasonic testing probe. The wedge includes a wedge body, multiple silencing grooves, and a damping block. The extension direction, spacing, and depth of each silencing groove are configured such that at least a portion of the reflected transverse wave generated at the detection surface can be guided to an attenuation interface formed by the groove wall of the silencing groove and the damping block. Furthermore, the reflected longitudinal wave generated at the detection surface undergoes at least six interface reflections within the wedge body before returning to the probe direction. The acoustic characteristics of the damping block are configured to absorb the reflected transverse wave. The reflected transverse wave is attenuated at the attenuation interface through a combination of scattering by the silencing groove and absorption by the damping block. After at least six interface reflections, the acoustic component of the reflected longitudinal wave returning to the probe direction forms a 180° phase difference with the incident longitudinal wave emitted by the probe, thus being attenuated through phase interference.

The invention belongs to the technical field of nondestructive testing of concrete structures, and relates to an urban underground comprehensive pipe gallery concrete engineering quality evaluation method which comprises the following steps: acquiring an original acoustic emission signal and performing structured processing to generate a structured acoustic emission event data object containing multi-dimensional feature information; carrying out feature correction and verification on the data object in combination with the environment data, and generating a focusing scanning instruction containing a target three-dimensional coordinate and a risk confidence coefficient; generating a parameterized adaptive focusing scanning configuration packet through physical parameter reverse mapping based on energy spectrum characteristics, driving a phased array ultrasonic system to perform targeted imaging on a target area and extracting acoustic image characteristics of defects; and finally, comparing the correlation between the data object and the image features, executing closed-loop verification, and adaptively updating discrimination parameters for risk determination. The technical problems of insufficient evaluation accuracy and verification lag caused by mutual separation of passive monitoring and active detection in the prior art are solved.

The invention discloses a phased array ultrasonic full-focus imaging frame rate testing device and method, and relates to the technical field of phased array ultrasonic full-focus imaging. The phased array ultrasonic full-focusing imaging frame rate testing device comprises an upper computer, a phased array ultrasonic board card, an array phased array probe, a flat-bottomed hole test block and a scanner. During testing, the scanning device is used for controlling the array phased array probe to scan right above the flat-bottomed hole test block according to a preset scanning speed, ultrasonic scanning images are acquired, each frame of image data in the ultrasonic scanning images is checked through the upper computer, and according to the number of image frames at intervals between frame images where the highest waves of the flat-bottomed holes are located on the images, the highest waves of the flat-bottomed holes are located on the flat-bottomed hole test block, and the highest waves of the flat-bottomed holes are located on the flat-bottomed hole test block. And calculating the average interval image frame number, and measuring the imaging frame rate in combination with the actual scanning speed of the scanner and the hole center distance in the horizontal direction between the adjacent flat-bottomed holes. The testing device and method are used for solving the problem that a conventional phased array full-focus detection acquisition image frame rate unrelated test method can only depend on software calculation and lacks credibility.

The application discloses a metal shaft ultrasonic nondestructive flaw detection method based on an intelligent sensing system and belongs to the technical field of metal component nondestructive detection. The method emits ultrasonic signals to a metal shaft to be detected which has been subjected to surface cleaning treatment through a phased array ultrasonic detector subjected to calibration processing, obtains echo signals, images after preprocessing of the echo signals, generates a three-dimensional image of the metal shaft, extracts metal shaft damage feature data based on the three-dimensional image of the metal shaft, inputs the metal shaft damage feature data into a metal shaft damage intelligent classification model to obtain a metal shaft flaw detection result, and generates a metal shaft flaw detection report accordingly. The application guarantees detection precision through surface cleaning and instrument calibration, realizes accurate identification and classification of internal damage of the metal shaft by combining three-dimensional imaging, feature extraction and an intelligent classification model, has the advantages of high detection efficiency and good accuracy, and can be effectively applied to nondestructive flaw detection of metal shafts.

This invention discloses a phased array ultrasonic defect intelligent identification and data analysis system, relating to the field of PAUT (Polymerization and Angiography). It includes: an acquisition module for driving a phased array ultrasonic sensor array to perform weld seam scanning according to preset scanning rules, simultaneously acquiring and outputting ultrasonic echo time-series data across the entire depth range of the weld seam; and a preprocessing module for receiving the ultrasonic echo time-series data, performing data correction, noise filtering, and initial screening of effective signals, while simultaneously receiving feature anchoring parameters output by a mapping module, refining the signals in the corresponding regions, and outputting the results. This invention enables continuous, blind-zone-free scanning across the entire thickness and width range of the weld seam, simultaneously completing accurate echo signal correction and defect feature extraction, improving defect identification accuracy through closed-loop adaptive processing, accurately determining defect types and calculating their spatial location, size, and other core parameters, and simultaneously completing defect data statistical analysis and welding process correlation.

1. Name of the product in this design: Phased array ultrasonic probe protective cover. 2. Purpose of this design: For use as a cardiac ultrasound probe. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a pipeline ultrasonic multi-mode separation method and system and a storage medium, and the method comprises the steps: scanning a to-be-detected pipeline through a phased array ultrasonic detection system, and obtaining the full-matrix data of the to-be-detected pipeline; and inputting the full-matrix data of the to-be-detected pipeline into the trained auto-encoder for processing to obtain a defect echo signal of the to-be-detected pipeline. Wherein in the self-encoder training process, a training set is composed of full matrix data obtained according to different-mode ultrasonic waves and defect response models and different-mode ultrasonic waves and boundary response models, and random disturbance is further added; according to the method, training data of 12 different propagation modes are adopted for training during training, and the multi-mode fusion training strategy enables an auto-encoder to learn deep physical characteristics of ultrasonic propagation, so that the separation capability of defect echoes and boundary echoes is remarkably improved; and finally, clearer defect display and more excellent signal-to-noise ratio performance are realized in full-focusing imaging.

The utility model relates to a phased array ultrasonic detection probe fixing and positioning device, which comprises a pipeline body, a support and a detection assembly, the pipeline body is placed inside the support, the detection assembly is sleeved on the outer side of the pipeline body, and the detection assembly comprises a mounting chain, a first probe, a second probe and a clamping unit, an L-shaped limiting plate is arranged on the outer side of the second probe, a clamping groove is formed in the bottom of the horizontal section of the L-shaped limiting plate, the outer side of the second probe and the clamping groove are installed in a clamped mode, and under the action of the clamping groove in the horizontal section of the L-shaped limiting plate, the position of the second probe is limited; and the L-shaped limiting plate is connected with the clamping unit through the nylon cable tie, so that the L-shaped limiting plate can stably limit the second probe at the position after installation, thereby ensuring that phased array ultrasonic detection atlas data is complete and a coupling agent does not flow to the body of an operator.

The utility model provides a test block for a variable coupling medium of an annular phased array ultrasonic probe, and belongs to the technical field of pipeline ultrasonic internal detection. A cabin is arranged in the middle of the test block, the state of capturing signals by an ultrasonic probe under different media can be simulated by injecting a coupling medium, and probe debugging under the medium condition is completed. An arc-shaped contact surface is arranged at the bottom of the test block, and the test block is suitable for testing the annular phased array ultrasonic probe. Meanwhile, the end cover of the test block can be replaced, and different pipeline wall thicknesses can be simulated by replacing end covers with different thicknesses. An operator injects coupling media such as water or crude oil into the test block, the test block is attached to the surface of an annular probe of an ultrasonic inner detector, and ultrasonic testing under different media can be achieved. Before detection, the test block is used for testing in a corresponding medium environment, and a better signal can be obtained, so that whether a probe works normally or not is judged.

The invention provides a phased array ultrasonic detection device and an automatic scanning system suitable for a circumferential weld of a small-diameter pipe. The automatic scanning system comprises a scanning frame, a path monitoring module, a coupling device, a driving device and a control device, the scanning frame comprises a cross rod and two probe clamping mechanisms arranged on the cross rod; the path monitoring module comprises an industrial camera, and the industrial camera is arranged on the cross rod, can perform angle adjustment and is used for monitoring a scanning path in real time; the coupling device can convey a coupling agent to the probe; the driving device is connected with the scanning frame and can walk; the control device can control walking of the driving device. The detection device comprises the automatic scanning system and a phased array ultrasonic detection instrument. According to the invention, while the requirements of stable coupling and constant-speed scanning are met, the double probes are symmetrically placed on the two sides of the welding seam for simultaneous scanning, and the scanning path is monitored in real time and the scanning track is remotely controlled and corrected by virtue of the industrial camera, so that the scanning precision is ensured.

A method is provided for modulating neural activity in a human subject, the method including positioning a pair of phased-array ultrasound transducers on opposing sides of a skull of a subject and focusing low-intensity ultrasound transcranially onto the ventral intermediate nucleus (VIM) of a subject. The low-intensity ultrasound is delivered at a frequency at or below 650 kHz and causes a reduction in tremor amplitude.

The invention relates to the field of nondestructive testing, in particular to a detection method and a detection device based on concave ring array phased array ultrasound. The device is characterized in that an isolation supporting column is arranged between a box body upper cover plate and a box body lower cover plate; two guide openings are formed in the box body upper cover plate; the upper end of the guide positioning pipe is connected with a guide port through an upper centering petal, and the lower end is fixedly connected with the positioning pipe seat; the upper end of the calibration sleeve is connected with the other guide port, and the bottom is connected with the lower bottom plate of the box body; a concave ring array ultrasonic probe is arranged at the lower part of the positioning tube seat, and both are fixed on the lower bottom plate of the box body; the concave surface ring array ultrasonic probe comprises a cylindrical concave surface ring array probe and a conical concave surface ring array probe which are stacked up and down; the lower centering petal is arranged in a cladding tube inspection sleeve on the lower bottom surface of the lower bottom plate of the box body; and the concave ring array ultrasonic probe, the upper centering petal and the lower centering petal are coaxially arranged. According to the invention, full-range detection of the cladding tube is realized, and detection precision and range coverage requirements are ensured.

This invention relates to the field of detection technology, specifically to a method for calibrating phased array ultrasonic testing parameters for flue gas turbine motorized blades. Addressing the application scenario where the blade body, root, and their interface regions of flue gas turbine motorized blades have complex structures and significant differences in testing locations, this method establishes a test block system adapted to the specific testing object. It then sequentially completes basic calibration, sensitivity and compensation parameter calibration, and verification correction. This ensures that the formation process of the testing process parameters has a clear hierarchy, specificity, and closed-loop nature, thereby enabling the final set of target testing process parameters to match the actual structural characteristics of the flue gas turbine motorized blades, the acoustic beam entry conditions, and subsequent testing requirements.

This invention discloses a laser phased array ultrasonic composite detection system and method for internal interface defects in GIS insulator metal inserts. The system includes a pulsed laser, an ultrasonic array probe, a control computer equipped with ultrasonic signal acquisition and processing software, and a two-dimensional laser scanning galvanometer. The detection method utilizes a pulsed laser to generate ultrasonic waves on the metal insert side. When the ultrasonic waves propagate to the interface, they are differentiated by the physical mechanism that internal defects completely reflect the ultrasonic waves, while defect-free areas allow ultrasonic waves to pass through. The ultrasonic array probe acquires the ultrasonic signal at the inner wall surface. The computer-controlled two-dimensional laser scanning galvanometer rapidly scans the entire interface of the epoxy resin-metal insert to obtain full matrix data. After the overall scan is completed, the corresponding ultrasonic array probe element is selected, and the computer, with a fixed rotation angle, uses a full-focusing algorithm to perform high-resolution imaging of the interface, thus detecting internal interface defects. This invention reduces the cost of detection equipment while improving the evaluation efficiency of internal defects in the epoxy resin-metal insert interface of GIS insulators.

This invention provides a system for detecting internal inclusions and porosity in aluminum rods based on ultrasonic flaw detection technology. It relates to the field of ultrasonic testing technology and includes: a construction module for constructing a dynamically adjustable detection coordinate system using the center point of the aluminum rod's end face as a first reference position, the center of the phased array ultrasonic probe array as a second reference position, and the reference positioning edge of the testing platform as a third reference position; and a calculation module for dividing the detection coordinate system into multiple hierarchical scanning sub-regions based on the two-dimensional spatial topological characteristics of the detection coordinate system and the actual size and shape distribution of the aluminum rod's end face; and calculating the focusing delay parameters and scanning path parameters corresponding to each sub-region based on the spatial position, area, and geometric distribution characteristics of the distance from the core region of the aluminum rod's end face. This invention achieves accurate and efficient detection of non-metallic inclusions and minute defects such as pores inside aluminum rods.

The application discloses a kind of intelligent detection methods for weld defects of stainless steel composite straight welded pipe, belong to nondestructive intelligent detection technical field.The method includes: establishing longitudinal space coordinate axis mapped with the length direction of weld;Synchronous acquisition of phased array ultrasonic fan-shaped scanning reflected echo signal and pulse eddy current induced eddy current attenuation curve, respectively extract interface reflection peak amplitude and decay time constant;Equivalent thickness of coating is calculated using decay time constant, and after comparing with nominal thickness, the receiving gain of phased array ultrasonic is dynamically adjusted, and the acoustic characteristics after compensation are output;The compensated acoustic characteristics and electromagnetic attenuation characteristics are input into the fusion judgment model to identify the defect category and spatial position.The application calibrates ultrasonic gain in real time through pulse eddy current, eliminates heterogeneous interface acoustic impedance mismatch interference, combines multimodal characteristics and support vector machine classification, realizes weld defect detection in full thickness range, reduces false defect alarm rate, and is suitable for online automatic detection.

This application discloses a method, equipment, medium, and product for detecting defects in fillet welds of B-type sleeves in oil and gas pipelines, relating to the field of non-destructive testing. The method includes constructing a simulation model and a phased array ultrasonic probe model in simulation software, and performing sound beam propagation simulation and defect response simulation on the phased array ultrasonic probe model and the simulation model to obtain the optimal placement position and optimal focusing law parameters of the phased array ultrasonic probe. The simulation model includes a simulation model of the workpiece under inspection and preset defects on the fillet weld. The simulation model of the workpiece under inspection includes: a B-type sleeve, the fillet weld, and the main pipeline. The B-type sleeve is welded to the main pipeline via the fillet weld. Based on the optimal placement position and optimal focusing law parameters of the phased array ultrasonic probe, the fillet weld of the workpiece under inspection is scanned using phased array ultrasonic scanning to achieve fillet weld defect detection. This application can improve the reliability of the detection results.

The invention discloses an ultrasonic cavitation structure and a phased array ultrasonic device thereof.The ultrasonic cavitation structure comprises a cavitation resonant cavity body, the cavitation resonant cavity body is cylindrical, the thickness of the cavity wall is uniform, flange connecting faces are arranged at the two ends of the cavitation resonant cavity body, sealing grooves are formed in the two ends of the cavitation resonant cavity body, a cooling jacket is welded to the outer side of the cavitation resonant cavity body, and the cavitation resonant cavity body is a core installation carrier; the tail end of the single-stage amplitude-change pole extends into an inner hole of the cavitation resonant cavity body and is used for transmitting and amplifying ultrasonic vibration, the signal regulation and control module, the cavitation monitoring and feedback module and the comprehensive guarantee module are further included, and unified scheduling and cooperative work are achieved through an external main control unit by means of the signal regulation and control module, the cavitation monitoring and feedback module and the comprehensive guarantee module. All the modules perform their own functions and cooperate with each other, the automation degree and the overall reliability of device operation are improved, meanwhile, all the function modules are independently designed, a single module can be upgraded or replaced according to actual processing requirements, the overall structure of the device does not need to be changed, and the adaptability and the later expansion capacity of the device are enhanced.

The utility model relates to drill rod phased array ultrasonic flaw detection equipment which comprises a base, the top of the base is vertically and fixedly connected with a fixing plate, the side wall of the fixing plate is fixedly connected with an installation ring, and a chuck is arranged on the outer side of the end, away from the fixing plate, of the installation ring. A mounting frame is fixedly connected to the top of the side wall of the side, away from the mounting ring, of the fixing plate, a telescopic spray head is arranged at the bottom of the mounting frame, a movable frame is slidably connected to the top of the base, and a detection mechanism is arranged on the side wall of the movable frame. The beneficial effects of the utility model are that through the arrangement of the detection mechanism, the drill rod sleeve can be automatically detected, so that the probe is always attached to the inner wall of the sleeve when the drill rod sleeve is detected, and the detection effect is improved; by arranging the telescopic spray head, the inner wall of the sleeve can be cleaned before detection, interference of silt attached to the inner wall of the sleeve to the probe is avoided, and the detection precision is effectively improved.

An ICE imaging system is disclosed, which comprises an Intracardiac echocardiography (ICE) catheter having a longitudinal axis, a proximal end, and a distal end. The ICE catheter corresponds to a micro-electromechanical (MEMS) or other transducer based phased array ultrasound catheter with an out diameter of 6 French or smaller for delivery through an internal jugular, subclavian, axillary, innominate venous system into heart chambers for the purpose of lead placement for a pacemaker or other implantable cardioverter defibrillator (ICD) device. Further, a catheter shaft houses an electronic flex cable which is in communication with at least one signal trace, and is configured to direct a plurality of transducer array elements to transmit and receive ultrasound beams, receive at least one signal from the plurality of transducer array elements, and construct at least one image of at least a portion of the heart based on the at least one signal.

The utility model discloses a portable phased array ultrasonic detection scanning device for welding seam detection. The portable phased array ultrasonic detection scanning device comprises a wedge block, a front edge ruler frame, a main beam, a secondary beam and an encoder structure, the wedge block is connected with the detection probe; the front edge ruler frame and the secondary beam are arranged on the two opposite sides of the wedge block respectively. Two ends of the main beam are respectively connected with the front edge ruler frame and the secondary beam; the main beam and the secondary beam are each provided with a clamping structure, and the clamping structures are used for being connected with an encoder structure. A ruler groove is formed in the front ruler frame, one end of the front ruler is movably contained in the ruler groove, a laser transmitter is arranged at the other end of the front ruler, and scales are arranged on the front ruler frame. The front edge ruler or the laser transmitter is aligned to the center of a welding seam through the extension length of the front edge ruler, the stability of scanning can be achieved only by aligning the front edge ruler or the laser transmitter to the center of the welding seam in the scanning process, and the device is small, light, suitable for operation of narrow spaces and complex curved surfaces and wide in application range.

The invention discloses a visual guidance ultrasonic image welding seam positioning method, which comprises a detection device, a line laser sensor, a phased array ultrasonic probe and a detected welding seam, and comprises the following steps: the detection device starts to move; a line laser sensor fixed to the detection device is used for collecting weld joint surface image data, and a weld joint track is recognized; a phased array ultrasonic probe fixed to the detection device is used for collecting ultrasonic data in the weld joint; correcting internal ultrasonic data of the welding seam by using the welding seam surface image data and the welding seam track; and positioning ultrasonic data weld features. According to the method, the detection results of the line laser sensor and the phased array ultrasonic equipment are combined, the phased array ultrasonic detection result is corrected by adding a visual image guiding method, the space positioning precision of the phased array ultrasonic detection result is improved, the detection adaptability of phased array ultrasonic to the complex structure welding seam is improved, and the detection accuracy of the phased array ultrasonic equipment is improved. The technical requirements on operators are reduced, and the processing efficiency of the detection result is improved.

The application discloses a small-caliber nozzle corner joint phased array ultrasonic detection system and method, and relates to the field of nozzle corner joint nondestructive detection. In the system, a phased array detector determines a detection area according to sound beam coverage analysis of a three-dimensional structure model of a debugging test block, and different scanning modes are configured for nozzle corner joints of different thicknesses and different types; the phased array probe sends ultrasonic waves covering the detection area to the contrast test block, determines a compensation curve, thereby calibrating the sensitivity of the system, and obtains an evaluation line and a quantitative line; the phased array probe sends ultrasonic waves covering the detection area to the target workpiece; a scanning device performs scanning operation on the target workpiece according to a scanning mode matched with the target workpiece, and generates a scanning image according to echo signals of the target workpiece; the phased array detector performs defect detection according to the scanning image, the three-dimensional structure model of the target workpiece, the evaluation line and the quantitative line, and obtains a defect detection result. The application can accurately and efficiently realize detection of the nozzle corner joint.

This utility model relates to the field of quality inspection, and in particular to an adaptive moving base, a probe clamping device, and a phased array ultrasonic testing system. The adaptive moving base includes a base (11), the bottom of which is provided with at least one set of adsorption crawling mechanisms (12), the adsorption crawling mechanism (12) including a magnetic component (121) and a bearing (122). This utility model has a simple structure, low manufacturing cost, and strong adaptability. Specifically, through the design of the base, this application provides stable support for the detection probe while allowing it to be directly adsorbed onto the surface of a welded pipe (or plate) and move flexibly. This effectively avoids the problems of instability in accuracy and operator fatigue caused by manual hand-held inspection, significantly reducing the difficulty of operation and technical threshold, and has significant market promotion value. Furthermore, this application has extremely strong adaptability; as long as the outer diameter of the welded pipe is larger than the opening of the base, stable adsorption can be achieved, making it widely applicable.

The invention belongs to the technical field of defect detection, and particularly relates to a defect reconstruction method applied to phased array ultrasonic detection of a spinning shell. Aiming at the problems of difficulty in feature extraction and multi-direction detection and reconstruction of spinning textures in phased array ultrasonic detection of spinning shell defects, noise interference caused by the spinning textures is effectively inhibited by adopting a multi-channel blind separation processing method provided by the invention, and the feature echo extraction effect is improved; and in combination with data in four directions, a position reconstruction algorithm based on a geometrical relationship is established, and reconstruction of a workpiece structure and defects is realized.

The present application relates to the technical field of metal casting process control, and particularly relates to a cast iron piece defect control casting method based on multi-stage flaw detection. The method comprises the following steps: performing water immersion ultrasonic flaw detection on raw material blocks to grade and screen target raw materials; performing online ultrasonic flaw detection on molten iron melt to regulate and control smelting purity; dynamically adjusting pouring flow field based on fusion of high-speed infrared thermal imaging and immersion ultrasonic echo data; monitoring solidification process by using phased array ultrasonic wave to homogenize sand mold cooling rate; verifying process parameter threshold by means of surface magnetic powder and internal ultrasonic double flaw detection after shakeout; and finally performing multi-dimensional composite flaw detection on the castings after heat treatment to determine the performance grading of the castings. The present application realizes full-process flaw detection feedback control from raw materials, smelting, pouring and solidification to heat treatment, significantly reduces the internal shrinkage, inclusion and crack defect rate of cast iron pieces, and improves the consistency of cast density and mechanical properties.