An intelligent mobile electromagnetic induction leveling device and method

Abstract

The present invention discloses an intelligent mobile electromagnetic induction leveling device and method, including a device main body and a wireless remote controller. The device main body includes: a hollow frame, a chassis, an induction heating mechanism arranged in the middle of the hollow frame, and an intelligent leveling mechanism fixed below the induction heating mechanism. The induction heating mechanism uses electromagnetic induction to generate eddy currents of induced current inside the heated workpiece for heating, and includes a controller, a frequency conversion and voltage conversion power supply, a coaxial transformer, and an electromagnetic induction heating coil arranged on the chassis from left to right in sequence. The intelligent leveling mechanism is used for leveling the workpiece, and includes a vacuum chuck, a laser sensor, an infrared temperature sensor, a magnetic concentrate, a servo motor, wheels arranged on the chassis below from left to right in sequence, and a DTOF sensor installed on the right front of the device main body. The present invention has a high degree of automation, can automatically detect the surface deformation of the workpiece during processing, has high working efficiency and good leveling effect.

Description

Technical Field

[0001] The present invention relates to the technology of intelligent electromagnetic induction mobile devices for ships and ocean engineering, and particularly to an intelligent mobile electromagnetic induction leveling device and method thereof. Background Art

[0002] At present, welding processes are widely used in the processing of various segments and plates in ship and ocean engineering structures. During the welding process of metal materials, due to uneven heating between the working area and the non-working area, unskilled manual operation and other reasons, the welding arc may shift, resulting in welding residual stress, which may increase the possibility of brittle failure of the structure, reduce the stable bearing capacity of compression bars, and cause changes in the size and shape of components. Since ship and ocean engineering structures are large in volume and mass, mechanical leveling of deformation cannot be used. Currently, it mainly relies on thermal working for leveling, mainly utilizing the plasticity and the characteristics of thermal expansion and contraction of steel, and forcing the reverse deformation of steel with external force or internal stress to achieve the leveling effect. However, it has extremely high requirements for the operation of the operator. It is necessary to accurately judge the stress relief area for heating, and the strength, plasticity, and toughness of the workpiece will all decrease after correction. When leveling thick steel plates, the heating time is long, which is likely to cause overburning, and defects such as decarburized layer and loss of metal elements and damage to the steel plate are irreversible. In addition, some toxic gases will be generated during the thermal working process, polluting the air and endangering the health of workers.

[0003] In recent years, electromagnetic induction heating technology has developed rapidly in various industries. Compared with the traditional "flame-water cooling" heating, its heating speed is fast, and the required temperature can be reached in a very short time, making the oxidation and decarburization on the surface of the processing area relatively slight without gas protection; after heat treatment by induction heating, there is a relatively thick ductile region under the surface hard layer of the workpiece, with better compressive internal stress, making the anti-fatigue and fracture resistance of the workpiece higher; the heating equipment is easy to install and is easy to achieve intelligentization; it is convenient for management, can effectively reduce transportation, save manpower, and improve production efficiency; it is convenient to use, simple to operate, can be started or stopped at any time, and does not require preheating; it has high electric energy utilization rate, is environmentally friendly and energy-saving, safe and reliable, and the working environment of the staff is good, and it will surely be widely used.

[0004] Chinese Patent Application CN201711251063.4 discloses a mobile device for an induction heating leveling machine. The device operates by manually pressing the switch button on the control box. After heating is completed, the correction button at the handle is pressed, and the device will emit a ray obliquely on the load. This ray is compared with the mark at the load, and the distance is adjusted by moving the heating device to achieve leveling. This method makes it difficult for the device to reach the accurate working position and the heating effect is prone to errors. It has particularly high requirements for the experience of the staff and is not conducive to popularization and use. In order to make electromagnetic induction heating more applicable to different occasions, there is an urgent need to develop a more intelligent mobile electromagnetic induction heating leveling device that can automatically identify surface deformation of workpieces and automatically heat and level them. Summary of the Invention

[0005] The object of the present invention is to overcome the defects of the prior art and provide an intelligent mobile electromagnetic induction leveling device and method with high automation degree, which can automatically detect the deformation of the steel plate surface after welding operation, and the self - moving device performs fixed - point leveling on the area to be leveled, improving the operation efficiency and having a good leveling effect.

[0006] To achieve the above object, the present invention adopts the following technical solutions.

[0007] An intelligent mobile electromagnetic induction leveling device of the present invention includes a device main body and a wireless remote controller;

[0008] The device main body includes: a hollow frame, a chassis, an induction heating mechanism arranged in the middle of the hollow frame, and an intelligent leveling mechanism fixed below the induction heating mechanism;

[0009] The induction heating mechanism uses electromagnetic induction to generate eddy currents of induced current inside the heated workpiece for heating; it includes a controller, a frequency - conversion and voltage - conversion power supply, a coaxial transformer, and an electromagnetic induction heating coil arranged on the chassis from left to right in sequence;

[0010] The intelligent leveling mechanism is used for leveling the workpiece, and includes a vacuum chuck, a laser sensor, an infrared temperature sensor, a magnetic concentrator, a servo motor, wheels arranged on the lower surface of the chassis from left to right in sequence, and a DTOF sensor installed on the right front surface of the device main body;

[0011] A pair of wheels for moving the device are respectively installed on the left and right lower end faces of the chassis;

[0012] The wireless remote controller is used to control the movement of the leveling device and the leveling process, and simultaneously display various working parameters in real - time.

[0013] Further, in the induction heating mechanism:

[0014] The variable frequency and variable voltage power supply is electrically connected to the controller, which boosts the AC frequency and voltage of the power supply and outputs a signal to the coaxial transformer;

[0015] The signal received by the coaxial transformer from the variable frequency and variable voltage power supply uses the principle of electromagnetic induction to reduce the high voltage to a safe voltage range;

[0016] The electromagnetic induction heating coil receives the high-frequency alternating current information transmitted by the coaxial transformer. Through the principle of electromagnetic induction, a strong induced current, i.e., eddy current, is generated inside the workpiece to be heated, and then a huge amount of Joule heat energy is generated inside the workpiece;

[0017] The controller is installed on the chassis to receive the information emitted by the above-mentioned various devices, and controls the movement of the main body of the control device and the operation of the variable frequency and variable voltage power supply according to the sequence of each information.

[0018] Furthermore, in the intelligent leveling mechanism:

[0019] The DTOF sensor calculates the distance between the device and the location to be processed by measuring the time difference between the pulse emission and reception of the laser sensor;

[0020] The servo motor is connected to the rotating shafts of the 2 wheels at the right end, and provides the power for the movement of the device by receiving the signal from the controller;

[0021] The magnetic concentrating body is installed between the chassis and the heating part of the electromagnetic induction heating coil, and fits with the chassis, so that the magnetic field effect can be concentrated within a certain range, reducing the influence on non-processing parts;

[0022] The infrared temperature sensor is installed at the heating part of the electromagnetic induction heating coil, and measures the temperature of the workpiece by using the radiation heat effect during workpiece heating;

[0023] The laser sensor is installed on the chassis near the heating part, and is used to measure the deformation amount of the workpiece during the operation of the device;

[0024] One vacuum suction cup is installed at each of the left and right ends of the chassis, including a telescopic cylindrical vacuum piston, which is used to position the main body of the device and the workpiece during leveling processing.

[0025] Furthermore, a handle is installed above the hollow frame of the main body of the device.

[0026] An intelligent mobile electromagnetic induction leveling method of the present invention includes:

[0027] Step 1. Click the start button on the wireless remote control to make the DTOF sensor and the sensing detection system start to work;

[0028] Step 2. The DTOF sensor scans and measures the horizontal distance between the protruding part of the working surface to be processed and the heating part of the electromagnetic induction heating coil on the mobile device, and transmits the information to the controller on the mobile device. At the same time, the sensing detection system records the vertical distance from the heating part of the electromagnetic induction heating coil to the ground as the final deformation amount of the workpiece, which is used as the final reference value for the leveling process.

[0029] Step 3. The controller starts the servo motor, which drives the device to move to the designated location and controls the simultaneous operation of the two vacuum suckers at the front and rear of the device chassis to fix the device. At this time, the sensing detection system records the vertical distance from the heating part of the electromagnetic induction heating coil to the top of the workpiece being heated as the initial reference value for the leveling process and transmits the signal to the controller.

[0030] Step 4. The controller controls the alternating current to be transmitted to the special frequency conversion and voltage transformation power supply through the coaxial cable. At the same time, the frequency and voltage of the alternating current are increased, and its electrical signal is transmitted to the coaxial transformer. The coaxial transformer reduces the voltage to a safe voltage and transmits it to the electromagnetic induction heating coil to start heating. At this time, the sensing detection system monitors the leveling data and temperature at the processing location in real time and transmits them to the wireless remote control.

[0031] Step 5. When the heating reaches the set temperature, the sensing detection system sends a signal to the controller. Under the condition of ensuring its mechanical strength, the water cooling system starts to work to take away the Joule heat generated in the coaxial transformer and the electromagnetic induction coil.

[0032] Step 6. When the sensing detection system monitors that the vertical distance from the heating part of the electromagnetic induction coil to the protruding part of the workpiece reaches the final reference value of the leveling process recorded by the sensing detection system in Step 2, the sensing detection system sends a signal to the controller to cut off the power supply, and the device stops working.

[0033] The present invention has the following beneficial effects and advantages:

[0034] (1) The intelligent mobile electromagnetic induction leveling equipment of the present invention is more user-friendly and intelligent, has the advantages of simple structure, high degree of automation and intelligence, and green environmental protection in the leveling process, and is suitable for large-area metal deformation correction work.

[0035] (2) The DTOF sensor, laser sensor and infrared temperature sensor are used in the present invention, making the mobile heating work more automated, greatly saving labor, and making the leveling work more accurate.

[0036] [[ID=·24]](3) The DTOF sensor of the present invention is installed at the right front of the device, which can scan the protruding part in a large range and effectively reduce the blind area.

[0037] (4) The laser sensor of the present invention is installed on the mobile chassis near the heating part, which can minimize the leveling error to the greatest extent.

[0038] (5) The present invention installs an infrared temperature sensor at the heating part of the electromagnetic induction heating coil. By mainly utilizing the radiant heat effect during workpiece heating, the detected temperature data can be made particularly accurate, which is beneficial to improving the working effect of the entire leveling equipment.

[0039] (6) The present invention compactly installs the controller, frequency conversion and voltage conversion power supply, coaxial transformer, electromagnetic induction heating coil, etc. on the mobile chassis of the equipment by means of wiring connection, reducing the volume of the equipment. The mutual positional relationship conforms to the signal transmission direction, making the leveling equipment more precise.

[0040] (7) The intelligent mobile electromagnetic induction leveling equipment of the present invention is used in conjunction with a wireless remote control, allowing the user to understand the working conditions in real time and make timely adjustments, making the entire working process smoother. Description of the Drawings

[0041] Figure 1 is a schematic diagram of the overall structure of an embodiment of the intelligent mobile electromagnetic induction leveling equipment of the present invention.

[0042] Figure 2 is a schematic diagram of the induction heating mechanism of an embodiment of the present invention.

[0043] Figure 3 is a schematic diagram of the intelligent leveling mechanism of an embodiment of the present invention.

[0044] Figure 4 is a schematic diagram of the structure of the wireless remote control of an embodiment of the present invention.

[0045] Figure 5 is a block diagram of the control system of an embodiment of the present invention.

[0046] Figure 6 is a flowchart of the leveling method of an embodiment of the present invention.

[0047] Among them, the handle (1), the controller (2), the frequency conversion and voltage conversion power supply (3), the coaxial transformer (4), the electromagnetic induction heating coil (5), the DTOF sensor (6), the wheels (7), the servo motor (8), the magnetic concentrating body (9), the infrared temperature sensor (10), the laser sensor (11), the vacuum chuck (12), the remote control display screen (13), the start / reset button (14), the close button (15), the chassis (16). Detailed Embodiment

[0048] The following further describes the present invention in detail with reference to the drawings.

[0049] Figure 1 is a schematic diagram of the overall structure of an embodiment of the intelligent mobile electromagnetic induction leveling equipment of the present invention. AsFigure 1 The embodiment of the present invention shown includes a device main body and a wireless remote controller.

[0050] The device main body includes: a hollow frame, a chassis (16), an induction heating mechanism disposed in the middle of the hollow frame, and an intelligent leveling mechanism fixed below the induction heating mechanism.

[0051] Figure 2 It is a schematic diagram of the induction heating mechanism of an embodiment of the present invention. As Figure 2 The induction heating mechanism shown uses electromagnetic induction to generate an induced current eddy current inside the heated workpiece for heating; it includes a controller (2), a frequency conversion and voltage conversion power supply (3), a coaxial transformer (4), and an electromagnetic induction heating coil (5) sequentially arranged on the chassis (16) from left to right;

[0052] Figure 3 It is a schematic diagram of the intelligent leveling mechanism of an embodiment of the present invention. As Figure 3 The intelligent leveling mechanism shown is used for leveling the workpiece, and includes a vacuum chuck (12), a laser sensor (11), an infrared temperature sensor (10), a magnetic concentrator (9), a servo motor (8), wheels (7) sequentially arranged below the chassis (16) from left to right, and a DTOF sensor (6) installed on the right front surface of the device main body;

[0053] A pair of wheels (7) for moving the device are respectively installed on the left and right lower end faces of the chassis (16), and driving methods such as wheel type, crawler type, and vacuum chuck type can be adopted.

[0054] The wireless remote controller is used to control the movement of the leveling device and the leveling process, and simultaneously display various working parameters in real time.

[0055] The handle 1 is installed above the entire device to facilitate hoisting operations or worker movement.

[0056] In the induction heating mechanism, the controller 2 is installed at the upper end of the tail of the chassis 16 and can receive the information transmitted by each sensor. It issues commands to the two servo motors that control the movement of the wheels of the control device according to the sequence of the information and controls the operation of the variable frequency and variable voltage power supply. The variable frequency and variable voltage power supply 3 is installed on the chassis 16 and is connected to the controller 2 through a circuit. It can increase the alternating current frequency of the power supply, and at the same time increase the voltage, and transmit this signal to the coaxial transformer 4. The coaxial transformer 4 is installed on the chassis 16 and is connected to the variable frequency and variable voltage power supply 3. It can receive the signal transmitted by the variable frequency and variable voltage power supply 3 and then use the principle of electromagnetic induction to reduce the high voltage to the safe voltage range. The electromagnetic induction heating coil 5 is in a loop structure and is connected to the coaxial transformer 4 at one end. It can receive the high-frequency alternating current information transmitted by the coaxial transformer 4 to generate a high-frequency alternating magnetic field at the heating place. Through the principle of electromagnetic induction, a strong induced current, that is, eddy current, is generated inside the workpiece to be heated, and then a huge Joule heat energy is generated inside the workpiece to achieve the purpose of heating.

[0057] In the intelligent leveling mechanism, the DTOF sensor 6 is installed in front of the equipment and calculates the distance to the position to be leveled by measuring the time difference between the pulse emission and reception. The wheels 7 are installed in front of the chassis 16 to enable the equipment to move. The servo motor 8 is connected to the rotating shafts of the two wheels and provides all the power for the equipment by receiving the signal from the controller 2. The magnetic concentrating body 9 is installed between the chassis 16 and the heating area of the electromagnetic induction heating coil 5 and fits with the chassis 16 to make the magnetic field gather within a certain range and reduce the impact on non-processing parts. The infrared temperature sensor 10 is installed at the heating area of the electromagnetic induction heating coil 5. It mainly uses the radiation heat effect when the workpiece is heated. After the detection device receives the radiant energy, it measures the temperature by changing the appropriate change into an electric quantity. The laser sensor 11 is installed on the chassis 16 near the heating area. First, the laser emitting diode emits a laser pulse towards the target. After being reflected by the target, the laser scatters in all directions. Part of the scattered light returns to the receiver of the sensor, which is converted into the corresponding electrical signal. Then, by recording and processing the time elapsed from the emission of the light pulse to its reception, the deformation amount of the workpiece during the operation of the equipment can be measured. The vacuum suction cups 12 are installed at the front and rear ends of the chassis 16. The cylindrical vacuum pistons on them can stretch, and the suction cups below can fix the equipment to ensure that the heating will not deviate due to the external environment during processing.

[0058] Figure 4 Schematic diagram of the structure of a wireless remote control for an embodiment of the present invention. As Figure 4 shown, the wireless remote control includes a main display screen 13, a start and reset button 14, and a shutdown button 15. The main display screen 13 can receive the parameter information of the equipment and enable the user to understand the equipment situation in real time. The start and reset button 14 and the shutdown button 15 allow the staff to control whether the leveling equipment works or not.

[0059] Figure 5 This is a block diagram of the control system for an embodiment of the present invention. The working process of the control system during the leveling operation will be further described below in conjunction with Figure 5 the following:

[0060] Step 1: Start button 14 on the wireless remote control is pressed to start the DTOF sensor 6. The distance between the mobile device and the location to be processed is detected, and the signal is sent to the controller 2.

[0061] Step 2: The controller 2 controls the two servo motors 8 in the self-propelled walking chassis to make the device move towards the designated position. When it arrives, the cylindrical vacuum piston in the self-propelled walking chassis expands and contracts to drive the vacuum suction cup 12 to work, fixing the device.

[0062] Step 3: The sensing detection system sends signals to the wireless remote control and the controller 2. The heating situation can be monitored in real time through the screen display of the wireless remote control; the heating system and the water cooling system can be controlled through the controller 2 to achieve heating and leveling.

[0063] The heating system includes a dedicated variable frequency and voltage power supply 3, a coaxial transformer 4, an electromagnetic induction heating coil 5, and a magnetic concentrating body 9. The variable frequency and voltage power supply 3 receives the signal from the controller 2, which can increase the alternating current frequency of the front-end power supply and at the same time increase the voltage, and then transmits this signal to the coaxial transformer 4; the coaxial transformer 4 receives the signal transmitted by the variable frequency and voltage power supply 3 and then uses the principle of electromagnetic induction to reduce the high voltage to the safe voltage range, and then transmits the received high-frequency alternating current and the safe voltage to the electromagnetic induction heating coil 5; the electromagnetic induction heating coil 5 receives the high-frequency alternating current information transmitted by the coaxial transformer 4, generating a high-frequency alternating magnetic field at the heating location; the magnetic concentrating body 9 can concentrate the high-frequency alternating magnetic field within a certain range to improve the heating efficiency, and then, through the principle of electromagnetic induction, a strong induced current, i.e., eddy current, is generated inside the workpiece, generating a huge Joule heat energy inside the workpiece to achieve the effect of heating and leveling.

[0064] When the above heating system is working, the water cooling system can cool the electromagnetic induction heating coil to protect the equipment.

[0065] Figure 6 This is a flowchart of the leveling method for an embodiment of the present invention. As Figure 6 shown, the specific steps of the leveling method of the present invention include:

[0066] Step 1: Click the start button 14 on the wireless remote control to make the DTOF sensor 6 and the sensing detection system start working.

[0067] Step 2: The DTOF sensor scans the working surface to measure the horizontal distance between the protruding part of the working surface and the heating area of the electromagnetic induction heating coil 5 on the mobile device, and transmits the information to the controller 2 on the mobile device. At the same time, the sensing detection system records the vertical distance from the heating area of the electromagnetic induction heating coil 5 to the ground as the final deformation amount of the workpiece, which is used as the final reference value for the flattening process.

[0068] Step 3: The controller 2 activates the servo motor 8 to drive the device to move to the designated location and controls the simultaneous operation of the two vacuum suckers 12 at the front and rear of the device chassis 16 to fix the device. At this time, the sensing detection system records the vertical distance from the heating area of the electromagnetic induction heating coil 5 to the top of the workpiece heating as the initial reference value for the flattening process and transmits the signal to the controller 2.

[0069] Step 4: The controller 2 controls the alternating current to be transmitted through the coaxial cable to the special frequency conversion and voltage transformation power supply 3 to increase the frequency of the alternating current to, and at the same time increases the voltage, and transmits this electrical signal to the coaxial transformer 4. The coaxial transformer 4 reduces the voltage to a safe voltage and transmits it to the electromagnetic induction heating coil 5 to start heating. At this time, the sensing detection system monitors the flattening data and temperature at the processing area in real time and transmits them to the wireless remote control.

[0070] Step 5: When the heating reaches the set temperature, the sensing detection system sends a signal to the controller 2. Under the condition of ensuring its mechanical strength, the water cooling system starts to work to take away the Joule heat generated in the coaxial transformer 4 and the electromagnetic induction coil 5.

[0071] Step 6: When the sensing detection system monitors that the vertical distance from the heating area of the electromagnetic induction coil 5 to the protruding part of the workpiece reaches the final reference value of the flattening process recorded by the sensing detection system in Step 2, the sensing detection system sends a signal to the controller 2 to cut off the power supply, and the device stops working.

Claims

1. An intelligent mobile electromagnetic induction leveling device, characterized in that, It includes a device main body and a wireless remote controller; The described device main body includes: a hollow frame, a chassis (16), an induction heating mechanism arranged in the middle of the hollow frame, and an intelligent flattening mechanism fixed below the induction heating mechanism; The described induction heating mechanism uses electromagnetic induction to generate an induced current eddy current inside the heated workpiece for heating; it includes a controller (2), a frequency conversion and voltage conversion power supply (3), a coaxial transformer (4), and an electromagnetic induction heating coil (5) arranged on the chassis (16) from left to right in sequence; The described intelligent flattening mechanism is used for flattening the workpiece, and includes a vacuum chuck (12), a laser sensor (11), an infrared temperature sensor (10), a magnetic concentrating body (9), a servo motor (8), wheels (7), and a DTOF sensor (6) installed on the right front surface of the device main body arranged on the lower surface of the chassis (16) from left to right in sequence; A pair of wheels (7) that can move the device are respectively installed on the left and right lower end faces of the chassis (16); The described wireless remote controller is used to control the movement of the flattening device and the flattening process, and simultaneously display various working parameters in real time; In the described induction heating mechanism: The frequency conversion and voltage conversion power supply (3) is electrically connected to the controller (2), boosts the alternating current frequency and voltage of the power supply, and outputs a signal to the coaxial transformer (4); The coaxial transformer (4) uses the principle of electromagnetic induction to reduce the high voltage to a safe voltage range based on the signal received from the frequency conversion and voltage conversion power supply (3); The electromagnetic induction heating coil (5) receives the high-frequency alternating current information transmitted by the coaxial transformer (4), and through the principle of electromagnetic induction, a strong induced current, that is, eddy current, is generated inside the heated workpiece, and then huge Joule heat energy is generated inside the workpiece; The controller (2) is installed on the chassis (16) and receives the information emitted by each device, controls the movement of the device main body according to the sequence of each information, and controls the operation of the frequency conversion and voltage conversion power supply (3); In the described intelligent flattening mechanism: The DTOF sensor (6) calculates the distance between the device and the processing location by measuring the time difference between the pulse emission and reception of the laser sensor (11); The servo motor (8) is connected to the rotating shafts of the two wheels at the right end, and provides the power for the device to move by receiving the signal from the controller (2); The magnetic concentrating body (9) is installed between the chassis (16) and the heating location of the electromagnetic induction heating coil (5), and fits with the chassis (16), so that the magnetic field effect can be concentrated within a certain range, reducing the impact on non-processing parts; The infrared temperature sensor (10) is installed at the heating location of the electromagnetic induction heating coil (5), and measures the temperature of the workpiece using the radiation heat effect during workpiece heating; The laser sensor (11) is installed on the chassis (16) near the heating location, and is used to measure the deformation amount of the workpiece during the operation of the device; A vacuum chuck (12) is installed at each of the left and right ends of the chassis (16), including a telescopic cylindrical vacuum piston, and is used to position the device main body and the workpiece during flattening processing; Above the hollow frame of the device main body, a handle (1) is installed.

2. An intelligent mobile electromagnetic induction leveling method using the device described in claim 1, characterized in that, It includes: Step 1. Click the start button (14) on the wireless remote control to make the DTOF sensor (6) and the sensing detection system start working; Step 2. The DTOF sensor (6) scans and calculates the horizontal distance between the protruding part of the working surface to be processed and the heating part of the electromagnetic induction heating coil (5) on the equipment, and transmits the information to the controller (2) on the equipment. At the same time, the sensing detection system records the vertical distance from the heating part of the electromagnetic induction heating coil (5) to the ground as the final deformation amount of the workpiece, which is used as the final reference value for the flattening process; Step 3. Start the servo motor (8) through the controller (2), so that it drives the equipment to move to the specified location and controls the two vacuum suckers (12) at the front and rear of the equipment chassis (16) to work simultaneously to fix the equipment; At this time, the sensing detection system records the vertical distance from the heating part of the electromagnetic induction heating coil (5) to the top of the workpiece heating as the initial reference value for the flattening process and transmits the signal to the controller (2); Step 4. The controller (2) controls the alternating current to be transmitted to the frequency conversion and voltage conversion power supply (3) through the coaxial cable, and at the same time increases the frequency and voltage of the alternating current, and transmits its electrical signal to the coaxial transformer (4); The coaxial transformer (4) reduces the voltage to a safe voltage and transmits it to the electromagnetic induction heating coil (5) to start heating; At this time, the sensing detection system real-time monitors the flattening data and temperature at the processing location and transmits them to the wireless remote control; Step 5. When the heating reaches the set temperature, the sensing detection system sends a signal to the controller (2). Under the condition of ensuring the mechanical strength, the water cooling system starts to work to take away the Joule heat generated in the coaxial transformer (4) and the electromagnetic induction coil (5); Step 6. When the sensing detection system monitors that the vertical distance from the heating part of the electromagnetic induction coil (5) to the protruding part of the workpiece reaches the final reference value of the flattening process recorded by the sensing detection system in Step 2, the sensing detection system sends a signal to the controller (2) to cut off the power supply, and the equipment stops working.

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