Metal composite plate explosive welding device

Abstract

The present application belongs to the technical field of explosive welding, especially a metal composite plate explosive welding device, comprising a base, a clamping mechanism, a explosive placement system, a multi-sensor array and a control unit. The clamping mechanism adopts a heavy frame structure, and the hydraulic locking cylinder is used to firmly fix the periphery of the base plate and the composite plate during the welding process, and the initial installation distance between the two is accurately controlled. The control method establishes a unified physical reference for the welding process, collects explosive pressure, temperature and vibration data in real time, calculates the welding quality index and deviation, compares the weighted warning coefficient with the threshold value to generate adjustment instructions, and adjusts the explosive quantity and detonation parameters adaptively. The present application solves the problems of inaccurate parameter control and unstable welding quality in existing explosive welding, and ensures the bonding strength and consistency of the welding interface through intelligent feedback control.

Description

Technical Field

[0001] This invention relates to the field of explosive welding technology, and more particularly to an explosive welding apparatus for metal composite plates. Background Technology

[0002] Explosive welding is a process that uses the detonation energy of explosives to drive metal plates to collide at high speeds and form a metallurgical bond. It is widely used in the manufacture of composite plates such as titanium steel and aluminum steel.

[0003] Existing technologies rely heavily on experience to set the amount of explosives, the spacing between the base plates and the location of the detonation point. They lack real-time monitoring and feedback control of the pressure field, temperature field and vibration state during the explosion process. This results in large fluctuations in the bonding strength of the welded interface, and defects such as incompatibility, over-melting or waveform disorder are prone to occur. Especially in the welding of large or irregularly shaped composite plates, the process parameters are difficult to dynamically adapt to environmental changes, resulting in poor welding quality consistency.

[0004] Therefore, there is an urgent need to develop an explosive welding device that integrates multi-sensor intelligent control and has adaptive parameter adjustment and data recording functions to improve welding quality stability and process reproducibility. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes an explosive welding device for metal composite plates.

[0006] This invention proposes an explosive welding device for metal composite plates, comprising a base, a clamping mechanism, an explosive placement system, a multi-sensor array, and a control unit. These components work together to control the entire explosive welding process.

[0007] Base: Made of high-strength steel plate by welding; the bottom of the base is equipped with anchor bolt holes, which can be used to firmly fix the device and provide a stable support foundation for the entire welding process, avoiding the impact of welding accuracy on the welding accuracy due to the shaking of the base during welding.

[0008] Clamping Mechanism: Employing a heavy-duty welded frame structure, including an upper clamping plate and a lower clamping plate. Both are locked together by high-strength hydraulic locking cylinders located at the four corners of the frame. Each hydraulic locking cylinder is equipped with a mechanical self-locking device to ensure that clamping force is maintained even in the event of a hydraulic system failure, preventing the plates from loosening. The upper clamping plate is made of steel plate with T-slots on its lower surface for installing replaceable explosion-proof sealing gaskets. The lower clamping plate is symmetrical to the upper clamping plate, with increased thickness to enhance foundation stability. Its upper surface features adjustable-height positioning blocks; by replacing positioning blocks of different thicknesses, precise control of the base can be achieved. The initial installation spacing between the base plate and the cladding plate; the explosion-proof sealing gasket adopts a multi-layer composite structure, with a thick polytetrafluoroethylene plate as the base layer (to achieve the sealing function), a thick hard rubber layer as the middle layer (to buffer the explosion impact), and a thick copper plate as the surface layer (to prevent the detonation products from ablating). The gasket is fixed in the T-slot of the upper clamping plate by bolts, which is convenient for disassembly and replacement. The core function of this clamping mechanism is to firmly fix the periphery of the base plate and the cladding plate during the welding process, maintain a precise initial installation spacing, and form a sealing boundary through the explosion-proof sealing gasket to buffer the explosion impact and ensure the stability of the welding boundary conditions.

[0009] Explosive placement system: includes an explosive layer laid on the composite plate and a detonator installed at the edge of the explosive layer; the explosive layer uses flexible explosive sheets with uniform and controllable thickness, which can be cut and shaped according to the welding area and evenly laid on the surface of the composite plate with adhesive; the detonator uses an electronic detonator, which is connected to the control unit through a shielded cable, has a multi-point ignition function, can achieve precise control of the detonation wave propagation direction, and is suitable for welding composite plates of different sizes and shapes.

[0010] Multi-sensor array: Arranged on the base and clamping mechanism, evenly distributed circumferentially along the welding interface, it includes pressure sensors, temperature sensors, and vibration sensors, with multiple sensors of each type forming a comprehensive monitoring network. Among them, the pressure sensor's range can accurately capture pressure changes during the explosion process; the temperature sensor uses a combination of infrared thermometry and contact thermocouples to ensure the accuracy of temperature monitoring; the vibration sensor uses a piezoelectric accelerometer to collect vibration data during the welding process in real time. The core function of this array is to comprehensively detect explosion pressure, temperature, and vibration data, providing real-time and comprehensive monitoring data for the control unit's decision-making.

[0011] Control Unit: Connecting the multi-sensor array and the detonator, this is the core control component of the device, comprising a data acquisition module, a processing module, and an execution module. The data acquisition module uses a 24-bit high-precision ADC with anti-detonation electromagnetic interference design, capable of simultaneously acquiring various data from the multi-sensor array and performing baseline removal and normalization processing. The processing module uses an embedded ARM processor running a real-time operating system, configured to execute core algorithms such as welding quality index calculation, deviation assessment, and alert coefficient generation. Specifically, this includes establishing a unified physical benchmark, calibrating the multi-sensor array under no-load and load conditions, setting preset thresholds and minimum dwell times, periodically acquiring and processing data from each sensor, calculating the welding quality index and contact deviation based on the data, and then calculating the alert coefficient by weighted summation of the welding quality index and contact deviation. The execution module uses a servo driver to receive adjustment commands from the processing module and control the parameters of the explosive placement system and the pressure of the hydraulic locking cylinder.

[0012] The core control logic of the control unit is as follows: by comparing the reminder coefficient with the preset threshold, when the reminder coefficient continuously exceeds the preset threshold and reaches the shortest dwell time, a prompt instruction containing the adjustment direction and adjustment range is generated; the adjustment direction is determined based on the trend of the welding quality index change; if the index rises, the amount of explosives is increased, and if it falls, the amount of explosives is decreased; the adjustment range is determined jointly based on the over-threshold range and the tightness index obtained by normalizing the welding quality index, and an upper limit constraint is applied; after the prompt instruction is issued, the system enters a latching state and does not generate new prompts repeatedly until the operation execution result is received or the safe clearing time is reached; after the adjustment is completed, a reset process is executed to clear the over-threshold count, release the latch, and record the event data to non-volatile memory for subsequent process review and parameter tuning.

[0013] Compared with the prior art, the present invention provides an explosive welding device for metal composite plates, which has the following beneficial effects:

[0014] 1. Stable and reliable structure: Heavy-duty clamping mechanism + mechanical self-locking design, firmly fixes the plate throughout the process and accurately controls the spacing between the base plate and the substrate; explosion-proof pad buffers and prevents corrosion, stabilizes the base to resist vibration, and ensures controllable welding boundary conditions.

[0015] 2. Comprehensive and accurate monitoring: Multiple types of sensors are evenly distributed around the perimeter to capture pressure, temperature, and vibration data in real time; unified physical benchmarks and online compensation eliminate interference, making the welding status monitorable and the data reliable.

[0016] 3. Intelligent and precise control: The welding status is determined by scientific algorithms to avoid erroneous adjustments; the explosive amount and detonation parameters are adaptively optimized to reduce welding defects, greatly improve the uniformity of bonding strength, and are suitable for welding large / irregular plates.

[0017] 4. Reproducible process + controllable safety: Automatically records adjustment data for easy review and iteration, adaptable to multiple working conditions; multiple designs such as mechanical self-locking, channel self-inspection, and conservative mode reduce safety risks.

[0018] 5. High versatility and easy maintenance: Flexible explosives + multi-point ignition adapt to different specifications of plates; modular component design, easy to disassemble and replace, convenient maintenance and upgrade. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first angle structure of an explosive welding device for metal composite plates proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the second angle structure of an explosive welding device for metal composite plates proposed in this invention.

[0021] Figure 3 For the present invention Figure 2 A magnified structural diagram at point A;

[0022] Figure 4 This is a schematic diagram of the control method for an explosive welding device for metal composite plates proposed in this invention.

[0023] In the diagram: 1. Base; 2. Clamping mechanism; 21. Upper clamping plate; 22. Lower clamping plate; 23. Hydraulic locking cylinder; 3. Detonator; 4. Multi-sensor array; 5. Control unit; 6. Central hydraulic station; 7. Positioning block. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Example 1, the explosive welding control method for metal composite plates of the present invention, as follows: Figure 4 As shown, it includes the following steps:

[0027] Step S1: System Initialization and Calibration

[0028] After the device is powered on, it enters the initialization phase to establish a unified physical reference. The sensor layout coordinate system is defined with the center of the welding interface as the origin and the interface plane as the reference plane. The attitude quaternion is output by the inertial measurement unit to align the interface coordinates to the world coordinate system, ensuring that the vertical direction is the global reference. This alignment only changes the angle reference zero point and does not affect the measurement of physical quantities, providing a unified reference for the determination of different installation attitudes.

[0029] After establishing the coordinate reference, the system registers the sensor and channel information; the multi-sensor array includes pressure sensors, temperature sensors, and vibration sensors, totaling N, with each sensor's serial number marked as S. k (k=1, 2, ..., N); Establish a hardware-to-logic channel mapping table and perform time synchronization detection, set a unified control period Tc (preferably 10-20ms) to ensure that multi-channel data enters the same time base ring buffer.

[0030] Then, no-load calibration was performed; raw data from each sensor was collected under non-explosive conditions to determine the zero-point offset b for each channel. k and noise level σ k Zero point is used to remove the baseline during operation, and noise level is used to normalize weights and set the minimum effective threshold. If drift or abnormality occurs during no-load period, the system determines that the channel is unqualified and prompts for maintenance.

[0031] Based on the no-load calibration, load calibration is performed to establish the conversion relationship between electrical readings and physical quantities; the pressure channel is loaded step by step using a known pressure source to obtain the pressure conversion factor C. k The temperature channel was calibrated using a standard temperature source, and the temperature conversion factor C was obtained. t The vibration channel was calibrated using a standard vibration table, and the vibration conversion factor C was obtained. v The conversion factor and the effective sensing area of ​​each sensor are fixed and stored together.

[0032] The system loads safety thresholds and preference parameters: It sets the preferred welding zone center and half-width, dividing the welding interface into a center zone, transition zone, and edge zone, with the center zone being the preferred welding zone; it also sets upper safety limits F for pressure, temperature, and vibration. max T max V max With minimum effective threshold F min T min V min Set the control cycle, filter coefficient, dwell statistics window, and minimum dwell time t. min and safe cleanup duration t clear .

[0033] The system employs an online attitude and temperature compensation strategy, continuously using IMU output to align the interface angle and correcting the zero point based on changes in ambient temperature. It periodically triggers self-checks, and enters a conservative mode when an anomaly is detected, increasing the trigger threshold and limiting decision complexity.

[0034] Finally, the system writes the calibration constant, threshold parameters, and time configuration into the non-volatile memory to form a data structure for runtime calls; when all channels pass the self-test and the attitude signal quality meets the standard, the system is set to the available state and proceeds to step S2.

[0035] Step S2: Data Acquisition and Welding Status Positioning

[0036] The system synchronously acquires data from a multi-sensor array, including pressure F, during a control cycle Tc. k Temperature T k Vibration V k And IMU quaternions; if individual channels lose samples, interpolation is used to fill them in; based on the zero point and noise baseline of step S1, the original readings are subjected to baseline removal and normalization processing:

[0037]

[0038] Where w k Let x be the weight of the k-th channel. k For the raw readings, clip() truncates the weights to [0, 1]; total weights When W tot Below the minimum contact weight threshold W min If no effective welding is detected in this cycle, no positioning quantity will be output.

[0039] Within the effective welding cycle, the system calculates the welding quality index Q. w And contact deviation P; the welding quality index is a weighted fusion of pressure, temperature, and vibration data:

[0040]

[0041] Where F norm T norm V norm These are the normalized pressure, temperature, and vibration values, with α, β, and γ being weighting coefficients (e.g., α=0.5, β=0.3, γ=0.2).

[0042] The contact deviation P is calculated by the deviation between the trigger sensor serial number and the preferred welding area serial number: ;in To trigger the average value of the sensor serial number, To optimize the average value of the sensor serial numbers in the welding area; for example, if the trigger sensor serial numbers are 2, 3, and 4, then... =3; the preferred zone sequence numbers are 4, 5, and 6, then =5, P=-2.

[0043] Step S2 outputs a welding quality index Q and a contact deviation P with timestamps, which are used for determination in step S3; the background continuously monitors the health status of the channel, and enters conservative mode when abnormalities occur.

[0044] Step S3: Joint Judgment of Welding Quality and Deviation

[0045] This step uses the Q output from step S2. w Given P as input, calculate the reminder coefficient R:

[0046]

[0047] Where λ1 and λ2 are weighting coefficients (e.g., λ1=0.4, λ2=0.6); the larger the contact deviation |P|, the larger the warning coefficient; welding quality index Q w The larger the value of R, the greater the alert coefficient; when R exceeds the preset threshold R... th When this happens, it indicates that the current welding parameters are not suitable and the parameters of the explosive placement system need to be adjusted.

[0048] Step S4: Quantification of Hierarchical Residence and Parameter Adjustment

[0049] This step uses the reminder coefficient R and the welding quality index Q. w As input, call the shortest dwell time t in step S1. min and safe cleanup duration t clear The system updates the over-threshold count in each cycle, only when R continuously exceeds R0. th And the duration reaches t min At that time, adjustment instructions are generated.

[0050] Adjusting direction based on Q w Determining the trend of change: If Q w A continuous increase suggests increasing the amount of explosives; a decrease suggests reducing the amount of explosives; and stable fluctuations suggest fine-tuning the detonation point.

[0051] The adjustment range is calculated using the over-threshold range q and the tightness index T:

[0052]

[0053]

[0054] Q min Q max These represent the minimum and maximum effective values ​​of the welding quality index.

[0055] The nominal solution for the parameter adjustment range ΔA is: Where A0 is the basic adjustment amount (e.g., a 1% change in explosive charge), k q k t For gain coefficients (e.g., k) q =0.5, k t =0.5), the final adjustment range is:

[0056]

[0057] Where A max For the maximum adjustment range (e.g., 5%), the adjustment command is sent to the execution module to control the explosive placement system to adjust the amount of explosive or the detonation point. After the command is issued, the system enters a latching state, at t clear It will not be triggered repeatedly until the operation execution result is received.

[0058] Step S5: Reset, Record, and Conservative Strategy

[0059] After successful adjustment, the system performs a reset: clears the over-threshold counter, releases the latch, and records the event data to non-volatile memory, including the adjustment direction, amplitude, and Q before and after the adjustment. w And P, R peak values ​​and overthreshold duration.

[0060] If the sensor channel malfunctions or the failure rate exceeds the limit, the system enters conservative mode: it raises the threshold, limits the adjustment range, provides only directional prompts, and maintains maintenance alarms; if t clear If the clearing condition is not met, the latch is held, and the reset is delayed.

[0061] Example 2, see Figures 1 to 3 The metal composite plate explosive welding device of the present invention includes a base 1, a clamping mechanism 2, an explosive placement system, a multi-sensor array 4, and a control unit 5.

[0062] The base 1 is welded from high-strength steel plate, with dimensions of 2000mm×1000mm×200mm, and the surface is coated with an explosion-proof coating; the bottom of the base 1 is provided with anchor bolt holes for fixed installation.

[0063] Clamping mechanism 2 is a heavy-duty welded frame structure, see reference. Figure 2 ,include:

[0064] Upper clamping plate 21: Made of 200mm thick Q345B steel plate, 300mm wide, and the length is determined according to the size of the composite plate (usually 2000-6000mm); T-slots are opened on the lower surface for installing replaceable explosion-proof sealing gaskets;

[0065] Lower clamping plate 22: The structure is symmetrical to the upper clamping plate 21, but the thickness is increased to 250mm to enhance the stability of the base; the upper surface is provided with a positioning block 7 with adjustable height, and the installation distance between the substrate and the composite plate can be precisely controlled by replacing the positioning block 7 with different thicknesses;

[0066] Hydraulic locking cylinders 23: Arranged at the four corners of the frame, each locking cylinder provides a locking force of 50-200 tons and is connected to the central hydraulic station 6 through a high-pressure hose; the hydraulic locking cylinders 23 are equipped with a mechanical self-locking device to ensure that the clamping force is not lost in the event of an unexpected failure of the hydraulic system;

[0067] Explosion-resistant sealing gasket: It is made of multi-layer composite material. The base layer is a 5mm thick polytetrafluoroethylene plate (to provide sealing), the middle layer is a 10mm thick hard rubber (to buffer impact), and the surface layer is a 2mm thick copper plate (to prevent detonation products from burning). The gasket is fixed in the T-slot of the upper clamping plate 21 by bolts for easy replacement.

[0068] The explosives placement system includes:

[0069] Explosive layer: Flexible explosive sheets are used, with uniform and controllable thickness, and are cut to shape according to the welding area; the explosive layer is evenly laid on the surface of the composite plate with an adhesive;

[0070] Detonator 3: It adopts an electronic detonator, is arranged at the edge of the explosive layer, and is connected to the control unit 5 through a shielded cable; Detonator 3 is equipped with a multi-point ignition function, which can realize the control of the detonation wave propagation direction.

[0071] The multi-sensor array 4 includes:

[0072] Pressure sensor: measuring range 0-100MPa, dynamic response frequency ≥100kHz, 8 sensors evenly distributed along the circumference of the welding interface;

[0073] Temperature sensor: measuring range 0-1000℃, response time ≤1ms, using a combination of infrared temperature measurement and contact thermocouple, with 8 measuring points;

[0074] Vibration sensor: measuring range 0-1000g, frequency range 0.5-10kHz, using piezoelectric accelerometer, with 8 measuring points.

[0075] Control unit 5 includes:

[0076] Data acquisition module: adopts a 24-bit high-precision ADC with a sampling rate of 1kHz and features anti-detonation electromagnetic interference design;

[0077] Processing module: Employs an embedded ARM processor, runs a real-time operating system, and executes the aforementioned control algorithm;

[0078] Execution module: A servo driver is used to control the pressure of the hydraulic locking cylinder 23 and the triggering timing of the detonator 3.

[0079] Workflow:

[0080] The substrate is placed on the positioning block 7 of the lower clamping plate 22, and the composite plate is placed above the substrate to form a preset gap (usually 0.5-2 times the plate thickness). The upper clamping plate 21 moves downward and presses the edge of the composite plate with a pad. The hydraulic locking cylinder 23 applies a preset locking force and mechanically locks itself. Then, the explosive layer is laid and the detonator 3 is installed. Then, the control method is executed to monitor the welding process in real time. After the explosive welding is completed, the locking force is released and the composite plate is taken out. Throughout the entire explosive welding process, from detonation to the completion of the detonation wave transmission, the clamping mechanism 2 always remains locked to ensure the stability of the plate boundary conditions.

[0081] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0082] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0083] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0084] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0085] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A metal composite plate explosive welding device, characterized in that, The application relates to a welding quality control system, which comprises a base (1), a clamping mechanism (2), an explosive placement system, a multi-sensor array (4) and a control unit (5); the clamping mechanism (2) is used for firmly fixing the periphery of a base plate and a cover plate during a welding process and maintaining an accurate initial installation distance between the base plate and the cover plate; the explosive placement system comprises an explosive layer laid on the cover plate and an igniter (3); the multi-sensor array (4) is arranged on the base (1) and the clamping mechanism (2) and is used for detecting explosion pressure, temperature and vibration data; and the control unit (5) is connected with the multi-sensor array (4) and the igniter (3) and is configured to execute a control method. The control unit (5) establishes a unified physical reference, calibrates the multi-sensor array (4) under no load and load conditions, and presets a threshold value and a minimum residence duration; Periodically collect sensor data; calculate a welding quality index and a contact deviation based on the data; calculate a reminding coefficient by weighted summation according to the welding quality index and the contact deviation, and compare the reminding coefficient with the preset threshold value; when the reminding coefficient continuously exceeds the preset threshold value and reaches the minimum residence duration, generate a prompt instruction containing an adjustment direction and an adjustment amplitude, and control an execution module to adjust the explosive placement system parameters; After the adjustment is completed, a reset process is executed, and event data is recorded to a non-volatile memory.

2. The metal composite plate explosive welding apparatus according to claim 1, characterized by: The clamping mechanism (2) comprises an upper clamping plate (21) and a lower clamping plate (22), and the two are locked by high-strength hydraulic locking cylinders (23); the clamping surfaces of the two are provided with compressible explosion-proof sealing gaskets, which are used for forming a sealed boundary and buffering impact when clamping.

3. The metal composite plate explosive welding apparatus according to claim 1, characterized by: The multi-sensor array (4) comprises pressure sensors, temperature sensors and vibration sensors, which are uniformly distributed along the welding interface.

4. The metal composite plate explosive welding apparatus according to claim 1, characterized by: The control unit (5) comprises a data acquisition module, a processing module and an execution module, and the processing module is configured to execute welding quality index calculation, deviation evaluation and reminding coefficient generation.

5. The metal composite plate explosive welding apparatus according to claim 1, characterized by: The contact deviation is calculated by obtaining the difference between the average value of the identification information of the triggered sensors and the average value of the identification information of the preferred welding zone sensors.

6. The metal composite plate explosive welding apparatus according to claim 5, characterized by: The preferred welding zone is obtained by dividing the welding interface into a center zone, a transition zone and an edge zone, and setting the center zone as the preferred welding zone.

7. The metal composite plate explosive welding apparatus according to claim 1, characterized by: The generation of the prompt instruction comprises continuous monitoring of the reminding coefficient, and the instruction is generated only when the threshold is continuously exceeded and the minimum residence duration is reached; the adjustment direction is determined according to the welding quality index change trend: if the index rises, the explosive amount is increased, and if the index falls, the explosive amount is reduced; the adjustment amplitude is determined according to the threshold exceeding amplitude and the welding quality index normalized value, and an upper limit constraint is applied.

8. The metal composite plate explosive welding apparatus according to claim 7, characterized by: After the prompt instruction is issued, the system enters a latch state, and no new prompt is generated until the operation execution result is received or the safe clearing duration is reached.

9. The metal composite plate explosive welding apparatus according to claim 7, characterized by: The threshold exceeding amplitude is the amplitude by which the reminding coefficient exceeds the preset threshold value, and the welding quality index normalized value is the tightness index.

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