Method and system for simultaneous welding and induction heating straightening of t-sections

Abstract

The present application relates to a T-shaped section welding and induction heating correction synchronous operation method and system, and relates to the field of T-shaped section welding and correction. The technical scheme adopts the principle of symmetrical heat input balance of the web plate, realizes synchronous operation of welding and correction, thereby offsetting the bending deformation and angular deformation caused by uneven shrinkage of welding, solving the deformation rebound problem existing in the traditional post-weld passive correction; through the welding and correction integrated operation mode, the secondary rework correction process is omitted, the processing flow is greatly simplified, the production efficiency is significantly improved, and the automatic batch production demand is adapted; the medium-high frequency induction heating combined with the closed-loop temperature control technology is adopted, the heating area is accurately controllable, only acts on the web plate to correct the required area of the wing plate, does not damage the overall metallographic structure and surface protective coating of the base material, effectively ensures the stability of the mechanical properties of the component, can meet the processing demands of multiple industries such as ships, steel structures, engineering machinery, and greatly improves the universality and application range of the equipment.

Description

Technical Field

[0001] This invention relates to the field of T-profile welding straightening technology, and in particular to a method and system for simultaneous T-profile welding and induction heating straightening. Background Technology

[0002] T-shaped profiles are fundamental components in steel structure buildings, bridges, engineering machinery, and shipbuilding. They are formed by welding together vertically arranged webs and horizontally arranged flanges, and the quality of this welding directly determines the overall stability and assembly precision of the downstream engineering structure. Currently, the industry primarily uses post-weld straightening to address welding deformation in T-shaped profiles. The mainstream technologies are divided into mechanical straightening and flame straightening. Mechanical straightening relies on large presses and straightening rollers to achieve forced shaping, while flame straightening uses acetylene flames to manually heat the deformed area locally. Both technologies have been widely adopted in the industry. In addition, some existing technologies employ on-the-fly straightening methods, mostly using single-sided auxiliary heating. While medium- and high-frequency induction heating technology offers advantages such as fast heating speed, concentrated heating area, controllable temperature, no open flame, and non-contact heating, a standardized on-the-fly synchronous induction straightening process and dedicated solutions for T-shaped profile welding deformation have not yet been developed.

[0003] Specifically, the existing technologies have the following technical defects: First, mechanical straightening equipment is costly and bulky, and is only suitable for thick rigid components. The straightening process can easily cause scratches on the surface of the base material and local stress concentration. Thin-walled T-sections are prone to secondary cracking and deformation. Second, flame straightening relies on manual experience to control the baking temperature and range. The temperature accuracy is poor and the heating area is uneven. It can easily damage the metallographic structure of the base material, resulting in a decrease in the hardness and toughness of the workpiece. At the same time, open flame operation poses a fire hazard, and the smoke and dust generated during baking pollute the working environment. Moreover, the deformation after straightening is prone to rebound, resulting in a high rework rate. Third, the existing welding straightening scheme uses unilateral auxiliary heating, which cannot achieve symmetrical thermal balance between the upper and lower areas of the web. The heat input matching degree is poor, the straightening effect is limited, and it cannot meet the needs of high-precision, automated mass production. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for simultaneous welding and induction heating straightening of T-profiles, in order to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a method for simultaneous welding and induction heating straightening of T-shaped profiles, comprising: For workpiece assembly and positioning, the flange of the T-profile to be processed is placed horizontally on the surface of the transmission roller of the workpiece bearing unit. The flange clamping assembly and the web clamping assembly are used to vertically center and assemble the web in the middle position of the flange. The connection position between the web and the flange is temporarily fixed by the assembly non-spot welding method to ensure that the perpendicularity between the web and the flange meets the processing standards. The heating unit is aligned and adjusted by placing the induction coil of the medium- and high-frequency induction heating unit on the top of the web plate, so that the heating center of the induction coil and the welding seams on both sides of the bottom of the web plate are symmetrical about the horizontal centerline of the web plate, and the gap between the induction coil and the side wall of the web plate is controlled to be 1-3mm. Synchronous heating and correction: The welding unit is started to continuously weld the connection between the bottom of the web plate and the flange. At the same time, the medium- and high-frequency induction power supply is turned on to continuously heat the top area of ​​the web plate with medium- and high-frequency induction heating. The heating frequency is set to 5-40kHz, the heating power is 5-15kW, and the heating temperature is 200-450℃. This causes the top of the web plate to produce plastic expansion and cooling contraction that match the welding heat input at the bottom, thus offsetting the bending and angular deformation caused by welding. As the welding unit moves in tandem, the heating temperature is monitored in real time by the temperature monitoring unit. Based on the closed-loop control of the monitored temperature, the high-frequency induction heating unit moves synchronously with the welding unit at the same speed and with the same stroke, and completes real-time correction throughout the welding operation. After the welding and induction heating correction operations are completed, the workpiece is cooled to room temperature by a constant temperature cooling unit in conjunction with natural air cooling, thus completing the T-profile welding deformation correction process.

[0006] In some embodiments, during the step of moving in conjunction with welding, the welding moving speed and the induction heating moving speed are uniformly controlled at 0.4-0.8 m / min to ensure a balance of heat input throughout the process; In the constant temperature cooling and shaping step, the first air-cooling duct and the second air-cooling duct are driven by the circulating air-cooling unit of the cooling and shaping unit to perform directional forced air cooling on the heat deformation areas of the web and wing plates after welding and induction heating, and the cooling rate is controlled within a reasonable range. Then, the workpiece is kept still and allowed to air-cool naturally to room temperature.

[0007] Secondly, the present invention provides a system for simultaneous T-profile welding and induction heating straightening, used to realize the above-mentioned method for simultaneous T-profile welding and induction heating straightening, including: The frame, which is welded from shaped steel and steel plates, serves as the mounting base for each unit; A workpiece carrying unit, which is mounted on the frame, is used to carry and transport T-shaped workpieces; A welding operation unit, which is installed on the frame and located above the workpiece carrying unit, is used to complete the welding operation at the connection position of the web and flange of the T-profile. The medium-high frequency induction heating unit is installed on the adjustment unit and is used to perform medium-high frequency induction heating on the top of the web of the T-profile. An adjustment unit, which is mounted on the frame and located on one side of the workpiece bearing unit, is used to drive the medium-high frequency induction heating unit to perform lifting, lowering, and horizontal and vertical fine-tuning. The cooling and shaping unit includes a circulating air-cooling unit, a first air-cooling duct, and a second air-cooling duct. The air outlet of the circulating air-cooling unit is connected to the first air-cooling duct and the second air-cooling duct, respectively. The first air-cooling duct and the second air-cooling duct are symmetrically arranged on both sides of the top of the web plate, and are used to perform directional forced air cooling on the heat deformation areas of the web plate and the flange after welding and induction heating. A welding fume extraction unit, which is installed on the frame, is used to purify the fumes generated during the welding process; A feeding conveyor, which is arranged at the input end of the workpiece carrying unit, is used to transport the T-profile to be processed to the straightening station; The synchronous control unit is electrically connected to the workpiece carrying unit, welding operation unit, medium-high frequency induction heating unit, adjustment unit, feeding conveyor, cooling and shaping unit, and welding fume removal unit, respectively, and is used to control the operating parameters of each unit in a closed loop to realize synchronous operation of welding and straightening.

[0008] In some embodiments, the medium-high frequency induction heating unit includes: A medium-to-high frequency inductive power supply, which is mounted on the rack, is used to provide medium-to-high frequency electrical energy; The induction coil is a U-shaped water-cooled copper tube structure, which is fixedly installed on the adjustment unit through a mica insulating frame. The coil is snapped across the top of the web plate and the surface is covered with a high-temperature resistant insulating layer. It is compatible with T-shaped web plates with a height of 200-800mm. Two sets of limiting guide rollers are symmetrically arranged on both sides of the mica insulating skeleton and are fitted to the side wall of the web. The thermal insulation component is a high-temperature resistant ceramic insulation blanket, which is wrapped around the outside of the induction coil.

[0009] In some embodiments, the adjustment unit includes: A fixed column is vertically installed on the frame; The lifting screw is rotatably mounted on the inside of the fixed column; A nut, the thread of which is sleeved on the lifting screw; A lifting frame is connected to the nut and an electric cross slide is installed on it. The induction coil of the medium-high frequency induction heating unit is installed on the electric cross slide. A handwheel, which is installed at the end of the lifting screw, is used to drive the lifting screw to rotate so as to drive the lifting frame to rise and fall; The control box, which is installed on the fixed column, is used to manually control the start, stop, speed adjustment and fine adjustment of the adjustment unit.

[0010] In some embodiments, the synchronization control unit includes: A temperature monitoring unit includes an infrared thermometer, which is installed on the medium-high frequency induction heating unit and faces the top of the web plate, for real-time detection of heating temperature. A displacement sensor, which is mounted on the adjustment unit, is used to detect the movement displacement of the medium- and high-frequency induction heating unit; A speed acquisition module, which is electrically connected to the welding operation unit and the adjustment unit respectively, is used to acquire welding speed and heating movement speed; A laser locator, which is installed on the medium-high frequency induction heating unit, is used to identify the weld position and guide the induction coil to align. A laser profilometer, installed at the output end of the workpiece bearing unit, is used to detect the straightness and angular deformation of the corrected T-profile. The PLC controller has a built-in temperature threshold module and speed matching module. When the heating temperature detected by the infrared thermometer exceeds the preset threshold, the PLC controller automatically adjusts the output power of the medium- and high-frequency induction power supply. The speed matching module automatically adjusts the operating speed of the adjustment unit according to the welding speed to ensure that welding and heating are synchronized.

[0011] In some embodiments, the workpiece carrying unit includes: Multiple drive rollers are mounted in parallel rotation on the frame to form a workpiece conveying channel; The main drive assembly includes a main drive motor, a main drive reducer, and a sprocket and chain box. The main drive motor is driven by a variable frequency speed control. The main drive motor drives the drive roller to rotate through the main drive reducer and the sprocket and chain box. The speed of the main drive motor is linked and matched with that of the adjustment unit. The wing plate clamping assembly and the web plate clamping assembly are symmetrically arranged on both sides of the transmission roller and are used to clamp and center the wing plate and the web plate. A gantry pressing assembly, mounted above the drive roller, is used to press the workpiece onto the drive roller.

[0012] In some embodiments, the wing plate clamping assembly includes a wing plate hydraulic motor, a wing plate worm gear reducer, a wing plate forward and reverse lead screw and nut, two sets of symmetrically arranged guide wheels, a wing plate telescopic arm, and a wing plate cylinder; the wing plate hydraulic motor drives the wing plate worm gear reducer, the wing plate worm gear reducer drives the wing plate forward and reverse lead screw and nut, the wing plate forward and reverse lead screw and nut drive the first-side guide wheel to push the workpiece toward the central axis position of the transmission roller; the wing plate cylinder drives the wing plate telescopic arm, the wing plate telescopic arm drives the second-side guide wheel to move toward the workpiece surface for positioning; The web clamping assembly includes a web hydraulic motor, a web worm gear reducer, web forward and reverse lead screws and nuts, two sets of symmetrically arranged clamping wheels, a web telescopic arm, and a web cylinder. The web hydraulic motor drives the web worm gear reducer, which in turn drives the web forward and reverse lead screws and nuts. The web forward and reverse lead screws and nuts drive the clamping wheels on the first side to push the workpiece toward the central axis of the transmission roller. The web cylinder drives the web telescopic arm, which in turn drives the clamping wheels on the second side to clamp the workpiece against the surface. The gantry pressing assembly includes a pressing cylinder, a lifting pulley guide rail, and a pressing roller; the telescopic end of the pressing cylinder is connected to the pressing roller and is used to push the pressing roller up and down to press the workpiece; the lifting pulley guide rail is slidably connected to the pressing roller and is used to support the lifting and lowering movement of the pressing roller.

[0013] In some embodiments, the welding operation unit includes: A submerged arc welding power source, which is mounted on the frame; A wire feeding assembly, comprising a wire spool and a wire feeder mounted on the frame, for feeding welding wire to the welding torch; Two sets of welding torches are symmetrically arranged on both sides of the bottom of the web, corresponding to the two connecting welds between the web and the flange, respectively. A welding torch adjusting component is mounted on the frame and connected to the welding torch. An adjusting cylinder is mounted on the welding torch adjusting component. The telescopic end of the adjusting cylinder is connected to the welding torch and is used to drive the welding torch to approach or leave the weld seam. A conductor, installed below the drive roller, is used to directly connect the welding circuit and prevent the welding current from burning out the drive roller bearings.

[0014] In some embodiments, the welding fume removal unit includes: A high-temperature resistant vacuum hose, with a vacuum hood installed at its first end, the vacuum hood facing the welding position of the welding gun; The first end of the universal vacuum arm is connected to the second end of the high-temperature resistant vacuum hose. The suction duct is installed on the frame, with its first end connected to the second end of the universal suction arm and its second end connected to an external welding fume extractor.

[0015] The beneficial effects of the technical solution provided by this invention include at least the following: This technical solution adopts the principle of symmetrical heat input balance on the upper and lower web plates to achieve simultaneous welding and straightening operations. This counteracts the bending and angular deformation caused by uneven shrinkage during welding, solving the deformation rebound problem of traditional passive post-weld straightening. Through the integrated welding and straightening operation mode, the secondary rework and straightening process is eliminated, greatly simplifying the processing flow, significantly improving production efficiency, and adapting to the needs of automated mass production. The use of medium- and high-frequency induction heating combined with closed-loop temperature control technology ensures precise and controllable heating areas, acting only on the areas of the web plates and flanges required for straightening, without damaging the overall metallographic structure and surface protective coating of the base material, effectively ensuring the stability of the mechanical properties of the components. It abandons the traditional open flame straightening process, eliminating fire safety hazards, while avoiding smoke and dust pollution from baking, significantly improving the working environment. It can meet the processing needs of multiple industries such as shipbuilding, steel structures, and construction machinery, greatly improving the versatility and applicability of the equipment. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] Figure 1 The diagram shows a front view of a T-profile welding and induction heating correction synchronous operation system provided by an exemplary embodiment of the present invention.

[0018] Figure 2 The diagram shows a side view of a T-profile welding and induction heating correction synchronous operation system provided by an exemplary embodiment of the present invention.

[0019] Figure 3 The diagram shows a top view of a T-profile welding and induction heating straightening synchronous operation system provided by an exemplary embodiment of the present invention.

[0020] Figure 4 It shows Figure 3 A partial schematic diagram of AA direction.

[0021] Figure 5 It shows Figure 3 A partial schematic diagram of BB direction.

[0022] Figure 6 It shows Figure 3 A partial schematic diagram of the CC direction.

[0023] Figure 7 It shows Figure 3 A partial schematic diagram of the DD direction.

[0024] Figure 8It shows Figure 3 A partial schematic diagram of the EE direction.

[0025] Figure 9 The diagram shows a flowchart of a method for simultaneous welding and induction heating correction of T-shaped profiles according to an exemplary embodiment of the present invention.

[0026] In the diagram: 1. Drive roller; 2. Wing plate clamping assembly; 2.1. Wing plate hydraulic motor; 2.2. Wing plate worm gear reducer; 2.3. Wing plate forward and reverse lead screw and nut; 2.4. Guide wheel; 2.5. Wing plate telescopic arm; 2.6. Wing plate cylinder; 3. Web plate clamping assembly; 3.1. Web plate hydraulic motor; 3.2. Web plate worm gear reducer; 3.3. Web plate forward and reverse lead screw and nut; 3.4. Clamping wheel; 3.5. Web plate telescopic arm; 3.6. Web plate cylinder; 4. Induction coil; 5. Medium and high frequency induction power supply; 6. First air-cooled duct; 7. Second air-cooled duct; 8. Equipment circulating air-cooling unit; 9. Frame; 9.1. Structural steel; 9.2. Steel plate; 10. Feeding conveyor; 11. Fixed column; 12. Lifting screw. ; 13. Wire nut; 14. Lifting frame; 15. Handwheel; 16. Operation box; 17. Infrared thermometer; 18. Displacement sensor; 19. Laser positioner; 20. Laser profilometer; 21. Main drive assembly; 21.1. Main drive motor; 21.2. Main drive reducer; 21.3. Sprocket and chain box; 22. High-temperature resistant dust suction hose; 23. Dust suction hood; 24. Suction duct; 25. Welding fume extractor; 26. Gantry pressing assembly; 26.1. Pressing cylinder; 26.2. Lifting pulley guide rail; 26.3. Pressing roller; 27. Submerged arc welding power source; 28. Welding wire spool; 29. ​​Wire feeder; 30. Welding torch; 31. Universal dust suction arm; 32. Welding torch adjusting parts; 33. Adjusting cylinder; 34. Conductor. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "multiple" means two or more.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Please see Figures 1 to 3 , Figure 8 The T-profile welding and induction heating straightening synchronous operation system includes: a frame 9, which is welded from profile steel 9.1 and steel plate 9.2, serving as the installation base for each unit; a workpiece carrying unit, mounted on the frame 9, used to carry and transport T-profile workpieces; a welding operation unit, mounted on the frame 9 and located above the workpiece carrying unit, used to complete the welding operation at the connection position of the web and flange of the T-profile; a medium-high frequency induction heating unit, mounted on the adjustment unit, used to perform medium-high frequency induction heating on the top of the web of the T-profile; an adjustment unit, mounted on the frame 9 and located on one side of the workpiece carrying unit, used to drive the medium-high frequency induction heating unit to perform lifting, lowering, and fine-tuning of horizontal and vertical movement; and a cooling and shaping unit, which includes an equipment circulating air cooling unit 8, a first air cooling duct 6, and a second air cooling duct. 7. The air outlet of the circulating air-cooled unit 8 is connected to the first air-cooled duct 6 and the second air-cooled duct 7 respectively. The first air-cooled duct 6 and the second air-cooled duct 7 are symmetrically arranged on both sides of the top of the web plate, and are used to perform directional forced air cooling on the heat deformation area of ​​the web plate and wing plate after welding and induction heating. The welding fume removal unit is installed on the frame 9 and is used to purify the fumes generated during the welding process. The feeding conveyor 10 is arranged at the input end of the workpiece carrying unit and is used to transport the T-shaped material to be processed to the straightening station. The synchronous control unit is electrically connected to the workpiece carrying unit, welding operation unit, medium and high frequency induction heating unit, adjustment unit, feeding conveyor 10, cooling and shaping unit and welding fume removal unit respectively, and is used to control the operating parameters of each unit in a closed loop to realize synchronous operation of welding and straightening.

[0031] In this embodiment, the frame 9 adopts a welded structure of steel section 9.1 and steel plate 9.2, providing a rigid installation foundation for all functional units; the feeding conveyor 10 cooperates with the workpiece carrying unit to realize continuous conveying and station switching of the workpiece to be processed; the welding operation unit completes the continuous welding of the connection weld between the web plate and the wing plate; the adjustment unit drives the medium-high frequency induction heating unit to realize lifting and horizontal and vertical fine adjustment, ensuring the relative position accuracy of the induction coil 4 and the web plate, and realizing symmetrical heat input balance; the medium-high frequency induction heating unit applies controllable heat input to the top of the web plate to offset welding deformation; the cooling and shaping unit provides a stable cooling air source through the equipment circulating air cooling unit 8, and performs directional and uniform cooling of the thermal deformation area of ​​the web plate and the wing plate through the first air cooling duct 6 and the second air cooling duct 7, controlling the cooling and shrinkage rate of the components and ensuring stable correction effect; the welding fume removal unit purifies welding fumes and improves the working environment; the synchronous control unit performs closed-loop control of the operating parameters of each unit to realize precise synchronization of welding and heating, ensuring consistency of operation and correction quality.

[0032] In some embodiments, see Figure 3 and Figure 7 The medium- and high-frequency induction heating unit includes: a medium- and high-frequency induction power supply 5, which is mounted on the frame 9 to provide medium- and high-frequency electrical energy; an induction coil 4, which is a U-shaped water-cooled copper tube structure, fixedly installed on the adjustment unit through a mica insulating frame, with the coil straddling the top of the web plate and covered with a high-temperature resistant insulating layer, suitable for T-shaped web plates with a height of 200-800mm; two sets of limiting guide rollers, symmetrically arranged on both sides of the mica insulating frame, and fitted against the side wall of the web plate; and a heat insulation component, which is a high-temperature resistant ceramic insulation blanket, covering the outside of the induction coil 4.

[0033] In this embodiment, the medium-high frequency induction power supply 5 is fixed to the frame 9, outputting medium-high frequency alternating electrical energy that matches the correction process, providing the energy basis for induction heating; the induction coil 4 adopts a U-shaped water-cooled copper tube structure, with an independent water-cooled circulation channel inside, connected to an external chiller for cooling during the coil's operation. It is rigidly installed on the adjustment unit through a mica insulating frame, bridging the top area of ​​the web plate. Its surface high-temperature resistant insulation layer ensures the reliability of the coil's long-term continuous operation, while also adapting to the processing requirements of T-shaped web plates with a height of 200-800mm; two sets of limiting guide rollers are symmetrically arranged on both sides of the mica insulating frame, moving in sync with the side wall of the web plate, correcting the relative positional deviation between the coil and the web plate in real time, ensuring the consistency of the heating area; the heat insulation component uses a high-temperature resistant ceramic insulation blanket to cover the outside of the induction coil 4, effectively blocking heat radiation loss and improving heating efficiency and temperature uniformity.

[0034] In some embodiments, see Figure 3 and Figure 7The adjustment unit includes: a fixed column 11, which is vertically mounted on the frame 9; a lifting screw 12, which is rotatably mounted on the inner side of the fixed column 11; a screw nut 13, which is threaded onto the lifting screw 12; a lifting frame 14, which is connected to the screw nut 13 and is equipped with an electric cross slide, on which the induction coil 4 of the medium-high frequency induction heating unit is mounted; a handwheel 15, which is mounted on the end of the lifting screw 12 and is used to drive the lifting screw 12 to rotate so as to drive the lifting frame 14 to rise and fall; and an operation box 16, which is mounted on the fixed column 11 and is used to manually control the start, stop, speed adjustment and fine adjustment of the adjustment unit.

[0035] In this embodiment, the fixed column 11 is vertically installed on the frame 9, serving as a rigid support for the entire adjustment mechanism. The lifting screw 12 is rotatably mounted inside the fixed column 11. Through precise thread transmission with the screw nut 13, it converts rotational motion into smooth linear motion, driving the lifting frame 14 connected to the screw nut 13 to achieve vertical adjustment. The handwheel 15 is mounted on the end of the lifting screw 12, enabling manual and rapid lifting and lowering adjustment, facilitating the initial alignment of workpieces of different heights and specifications. The electric cross slide is mounted on the lifting frame 14 and integrates a dual-axis drive mechanism for horizontal and vertical movement, enabling precise fine-tuning of the induction coil 4 on the horizontal plane. Its control interface is electrically connected to the PLC controller and the operation box 16, supporting both manual alignment and automatic synchronous operation modes. The operation box 16 is integrated into the fixed column 11, providing a unified manual control interface to realize unit start / stop, speed adjustment, and fine-tuning of the three degrees of freedom of lifting, horizontal movement, and vertical movement, ensuring that the relative position accuracy between the induction coil 4 and the web meets the requirements of symmetrical thermal input.

[0036] In some embodiments, see Figure 3 and Figure 7 The synchronous control unit includes: a temperature monitoring unit, comprising an infrared thermometer 17 mounted on the medium-high frequency induction heating unit and facing the top of the web plate, for real-time detection of heating temperature; a displacement sensor 18 mounted on the adjustment unit, for detecting the movement displacement of the medium-high frequency induction heating unit; a speed acquisition module electrically connected to the welding operation unit and the adjustment unit, for acquiring welding speed and heating movement speed; a laser positioner 19 mounted on the medium-high frequency induction heating unit, for identifying the weld position and guiding the induction coil 4 to alignment; a laser profilometer 20 mounted on the output end of the workpiece bearing unit, for detecting the straightness and angular deformation of the corrected T-profile; and a PLC controller, which has a built-in temperature threshold module and speed matching module. When the heating temperature detected by the infrared thermometer 17 exceeds the preset threshold, the PLC controller automatically adjusts the output power of the medium-high frequency induction power supply 5; the speed matching module automatically adjusts the operating speed of the adjustment unit according to the welding speed to ensure synchronous welding and heating.

[0037] In this embodiment, the infrared thermometer 17 is integrated into the medium-high frequency induction heating unit and faces the top of the web plate, collecting temperature field data of the heating area in real time to provide accurate feedback for dynamic power adjustment; the displacement sensor 18 and the speed acquisition module work together to collect motion parameters of the welding and heating units, providing data support for speed synchronization matching; the laser positioner 19 identifies the weld position in real time and guides the induction coil 4 to accurately align, ensuring that the symmetry between the heating center and the weld meets the process requirements; the laser profilometer 20 is deployed at the output end of the workpiece bearing unit to detect the straightness and angular deformation index of the finished product online, realizing closed-loop verification of processing quality; the PLC controller has built-in temperature threshold and speed matching dual modules, automatically adjusting the output power of the medium-high frequency induction power supply 5 according to the temperature feedback, and matching the operating speed of the heating unit in real time according to the welding speed, ensuring the balance of symmetrical heat input from the control level, and realizing fully automated operation.

[0038] In some embodiments, see Figures 1 to 5 The workpiece carrying unit includes: multiple drive rollers 1, which are mounted in parallel rotation on the frame 9 to form a workpiece conveying channel; a main drive assembly 21, which includes a main drive motor 21.1, a main drive reducer 21.2, and a sprocket and chain box 21.3. The main drive motor 21.1 is driven by frequency conversion speed regulation. The main drive motor 21.1 drives the drive rollers 1 to rotate through the main drive reducer 21.2 and the sprocket and chain box 21.3, and the speed of the main drive motor 21.1 is linked and matched with the speed of the adjustment unit; a wing plate clamping assembly 2 and a web plate clamping assembly 3, which are symmetrically arranged on both sides of the drive roller 1 for clamping and centering the wing plate and the web plate; and a gantry pressing assembly 26, which is mounted above the drive roller 1 for pressing the workpiece onto the drive roller 1.

[0039] In this embodiment, multiple drive rollers 1 are installed in parallel rotation on the frame 9 to form a continuous workpiece conveying channel, achieving stable linear conveying of T-profiles. The main drive assembly 21 adopts a variable frequency speed control drive architecture. The main drive motor 21.1 transmits power through the main drive reducer 21.2 and the sprocket and chain box 21.3, driving the drive rollers 1 to rotate synchronously. The main drive motor 21.1 and the adjustment unit establish a speed linkage matching mechanism to ensure that the workpiece conveying speed is strictly consistent with the welding and heating speed, providing a speed reference for welding and straightening synchronization. The wing plate clamping assembly 2 and the web plate clamping assembly 3 are symmetrically arranged on both sides of the conveying channel to achieve automatic centering and positioning of the wing plate and the web plate, ensuring the perpendicularity of the web plate and the wing plate and the accuracy of the weld position. The gantry pressing assembly 26 is mounted above the conveying channel to reliably press the workpiece onto the surface of the drive roller 1, preventing the workpiece from shifting or displacing during processing and improving the stability of the straightening quality.

[0040] In some embodiments, see Figures 2 to 5The wing plate clamping assembly 2 includes a wing plate hydraulic motor 2.1, a wing plate worm gear reducer 2.2, a wing plate forward and reverse lead screw nut 2.3, two sets of symmetrically arranged guide wheels 2.4, a wing plate telescopic arm 2.5, and a wing plate cylinder 2.6. The wing plate hydraulic motor 2.1 drives the wing plate worm gear reducer 2.2, which in turn drives the wing plate forward and reverse lead screw nut 2.3. The wing plate forward and reverse lead screw nut 2.3 drives the first-side guide wheel 2.4 to push the workpiece towards the central axis of the transmission roller 1. The wing plate cylinder 2.6 drives the wing plate telescopic arm 2.5, which in turn drives the second-side guide wheel 2.4 to position the workpiece against the workpiece surface. The web plate clamping assembly 3 includes a web plate hydraulic motor 3.1, a web plate worm gear reducer 3.2, a web plate forward and reverse lead screw nut 3.3, two sets of symmetrically arranged clamping wheels 3.4, and a web plate... The system includes a telescopic arm 3.5 and a web plate cylinder 3.6; a web plate hydraulic motor 3.1 drives a web plate worm gear reducer 3.2, which in turn drives a web plate forward and reverse lead screw nut 3.3, which in turn drives the clamping wheel 3.4 on the first side to push the workpiece toward the central axis of the transmission roller 1; the web plate cylinder 3.6 drives the web plate telescopic arm 3.5, which in turn drives the clamping wheel 3.4 on the second side to clamp the workpiece; the gantry pressing assembly 26 includes an upper pressing cylinder 26.1, a lifting pulley guide rail 26.2, and an upper pressing roller 26.3; the telescopic end of the upper pressing cylinder 26.1 is connected to the upper pressing roller 26.3 to push the upper pressing roller 26.3 up and down to press the workpiece; the lifting pulley guide rail 26.2 is slidably connected to the upper pressing roller 26.3 to support the up and down movement of the upper pressing roller 26.3.

[0041] In this embodiment, the wing plate clamping assembly 2 adopts a combined hydraulic drive and screw transmission structure. The wing plate hydraulic motor 2.1 drives the wing plate forward and reverse screw nut 2.3 via the wing plate worm gear reducer 2.2, which in turn drives the first side guide wheel 2.4 to achieve automatic centering of the wing plate. The wing plate cylinder 2.6 drives the second side guide wheel 2.4 via the wing plate telescopic arm 2.5 to complete flexible positioning and prevent lateral displacement of the workpiece. The web plate clamping assembly 3 adopts the same transmission principle. The web plate hydraulic motor 3.1 drives the web plate forward and reverse screw nut 3.3 to drive the first side clamping wheel 3.4 for centering. The web plate cylinder 3.6 drives the second side clamping wheel 3.4 via the web plate telescopic arm 3.5 to achieve rigid clamping. The gantry upper pressing assembly 26 drives the upper pressure roller 26.3 to rise and fall along the lifting pulley guide rail 26.2 via the upper pressing cylinder 26.1 to press the workpiece from above and suppress warping and movement during processing.

[0042] In some embodiments, see Figure 2 , Figure 3 , Figure 6The welding operation unit includes: a submerged arc welding power source 27, which is mounted on the frame 9; a wire feeding assembly, which includes a wire spool 28 and a wire feeder 29 mounted on the frame 9, for feeding welding wire to the welding torch 30; two sets of welding torches 30, symmetrically arranged on both sides of the bottom of the web, corresponding to the two connecting welds of the web and the flange respectively; a welding torch adjusting component 32, which is mounted on the frame 9 and connected to the welding torch 30, and an adjusting cylinder 33 is mounted at a 45-degree angle on the welding torch adjusting component 32, the extension end of the adjusting cylinder 33 is connected to the welding torch 30, for driving the welding torch 30 to approach or leave the weld; and a conductor 34, which is installed below the transmission roller 1, for directly connecting the welding circuit and preventing the welding current from burning out the transmission roller bearing.

[0043] In this embodiment, the submerged arc welding power source 27 is fixed to the frame 9 and outputs welding power that meets the process requirements; the wire feeding assembly consists of a wire spool 28 and a wire feeder 29 to achieve continuous feeding of the welding wire; two sets of welding torches 30 are symmetrically arranged on both sides of the bottom of the web plate to simultaneously complete the welding operation of the two connecting welds, ensuring the symmetry of the welding heat input at the bottom of the web plate; the welding torch adjustment component 32, in conjunction with the adjustment cylinder 33 installed at 45 degrees, realizes the linear position adjustment of the welding torch 30 and improves the weld formation quality; the conductor 34 is installed below the transmission roller 1 to construct an independent welding circuit, avoiding the welding current from flowing through the transmission roller bearing and effectively preventing bearing burnout.

[0044] In some embodiments, see Figure 2 , Figure 3 , Figure 6 The welding fume extraction unit includes: a high-temperature resistant suction hose 22, with a suction hood 23 installed at its first end, the suction hood 23 facing the welding position of the welding torch 30; a universal suction arm 31, the first end of which is connected to the second end of the high-temperature resistant suction hose 22; and a suction duct 24, which is installed on the frame 9, the first end of which is connected to the second end of the universal suction arm 31, and the second end of which is connected to the external welding fume extractor 25.

[0045] In this embodiment, the dust hood 23 is aligned with the welding area of ​​the welding torch 30 to capture the high-temperature fumes generated during welding in the first instance, effectively preventing the unorganized spread of fumes; the high-temperature resistant dust suction hose 22 serves as a flexible connecting component, adapting to the dynamic adjustment requirements of the welding station, and also possesses excellent high-temperature resistance, able to withstand the high-temperature erosion of welding fumes; the universal dust suction arm 31 provides multi-degree-of-freedom adjustment capability, which can flexibly adjust the suction angle and coverage range according to the welding position of workpieces of different specifications, significantly improving the efficiency of fume collection; the suction duct 24 is fixedly installed on the frame 9, serving as a stable fume conveying channel, and directionally conveys the captured fumes to the external welding fume dust collector 25 for centralized purification treatment, achieving compliant emissions.

[0046] Figure 9The diagram illustrates a flowchart of a method for simultaneous welding and induction heating straightening of T-profiles according to an exemplary embodiment of the present invention. This method is applied to the aforementioned simultaneous welding and induction heating straightening system for T-profiles. The method includes: Step S1: Workpiece assembly and positioning. Place the wing plate of the T-profile to be processed horizontally on the surface of the transmission roller 1 of the workpiece bearing unit. Use the wing plate clamping assembly 2 and the web plate clamping assembly 3 to vertically center and assemble the web plate in the middle position of the wing plate. Use an assembly non-spot welding method to temporarily fix the connection position of the web plate and the wing plate to ensure that the perpendicularity of the web plate and the wing plate meets the processing standards.

[0047] In this embodiment, the feeding conveyor 10 transports the wing plate to be processed to the surface of the transmission roller 1 of the workpiece bearing unit. The main transmission assembly 21 drives the transmission roller 1 to transport the wing plate to the assembly station. The wing plate hydraulic motor 2.1 drives the wing plate forward and reverse lead screw nut 2.3 to rotate via the wing plate worm gear reducer 2.2, driving the first side guide wheel 2.4 to push the wing plate towards the central axis position of the transmission roller 1. The wing plate cylinder 2.6 drives the wing plate telescopic arm 2.5 to drive the second side guide wheel 2.4 to abut against the side of the wing plate to complete the lateral positioning. The web plate is placed vertically in the middle of the wing plate. The web plate hydraulic motor 3.1 drives the web plate forward and reverse lead screw nut 3.3 to rotate via the web plate worm gear reducer 3.2, which drives the first side clamping wheel 3.4 to push the web plate to center. The web plate cylinder 3.6 drives the web plate telescopic arm 3.5 to drive the second side clamping wheel 3.4 to clamp the web plate. After the web plate and the wing plate are temporarily fixed by non-spot welding at the connection position using mechanical clamps, the upper pressure cylinder 26.1 drives the upper pressure roller 26.3 to descend along the lifting pulley guide rail 26.2 to press the workpiece onto the surface of the transmission roller 1. In one example, the non-spot welding temporary fixation of the connection position between the web plate and the wing plate using mechanical clamps is achieved as follows: C-type clamping fixtures arranged at intervals of 1-2m along the length of the workpiece are used for non-spot welding temporary fixation. The C-type clamping fixtures are installed on the frame 9 between the transmission rollers 1. Their clamping ends press against the upper surface of the wing plate and the top side of the web plate respectively to achieve rigid temporary fixation of the web plate and the wing plate. After welding is completed, the PLC controller controls the automatic release.

[0048] Step S2: Alignment and adjustment of the heating unit. Arrange the induction coil 4 of the medium-high frequency induction heating unit on the top of the web plate, so that the heating center of the induction coil 4 and the welding seams on both sides of the bottom of the web plate are symmetrical about the horizontal centerline of the web plate. Control the gap between the induction coil 4 and the side wall of the web plate to be 1-3mm.

[0049] In this embodiment, the lifting screw 12 is driven to rotate by the handwheel 15, which in turn drives the lifting frame 14 and the medium-high frequency induction heating unit to descend as a whole via the screw nut 13, so that the induction coil 4 is secured to the top of the web plate. The laser positioner 19 identifies the position of the weld seam at the bottom of the web plate in real time and feeds back the coordinate information to the PLC controller. The PLC controller outputs control signals to drive the electric cross slide to make precise fine adjustments in the horizontal and vertical movements, so that the heating center of the induction coil 4 is strictly symmetrical with respect to the two weld seams about the horizontal centerline of the web plate. Two sets of limit guide rollers move in close contact with the side wall of the web plate and correct the relative position deviation between the coil and the web plate in real time, ensuring that the gap between the induction coil 4 and the side wall of the web plate is stable at 1-3mm. After the alignment is completed, the PLC controller automatically locks the position of the electric cross slide to prevent displacement during operation.

[0050] Step S3: Synchronous heating and correction. Start the welding operation unit to continuously weld the connection position between the bottom of the web plate and the flange. At the same time, simultaneously turn on the medium-high frequency induction power supply 5 to continuously perform medium-high frequency induction heating on the top area of ​​the web plate. Set the heating frequency to 5-40kHz, the heating power to 5-15kW, and the heating temperature to 200-450℃, so that the top of the web plate produces plastic expansion and cooling contraction that match the welding heat input at the bottom, thus offsetting the bending and angular deformation caused by welding.

[0051] In this embodiment, the synchronous control unit issues a start command, the welding fume removal unit starts first, and the dust collection hood 23 begins to collect welding fumes; the adjusting cylinder 33 drives the welding torch 30 to move along the welding torch adjusting component 32 to the welding position, the submerged arc welding power supply 27 starts, the wire feeder 29 delivers the welding wire on the welding wire spool 28 to the welding torch 30, the conductor 34 connects the welding circuit, and the two sets of welding torches 30 simultaneously perform continuous welding on the weld seams on both sides of the bottom of the web; at the same time, the medium-high frequency induction power supply 5 starts, outputting a medium-high frequency alternating current to the induction coil 4, so that the top of the web generates an eddy current effect to achieve induction heating, the heating frequency is set to 5-40kHz, and the heating power is 5-15kW; the infrared thermometer 17 detects the heating temperature of the top of the web in real time and feeds it back to the PLC controller. When the temperature exceeds the preset range of 200-450℃, the temperature threshold module automatically adjusts the output power of the medium-high frequency induction power supply 5, so that the top of the web generates a plastic expansion amount that matches the welding heat input at the bottom. In one example, the matching relationship of process parameters corresponding to different web thicknesses is shown in the following table: .

[0052] Step S4: The heating unit moves in conjunction with the welding operation, and the heating temperature is monitored in real time by the temperature monitoring unit. Based on the temperature monitoring closed-loop control, the high-frequency induction heating unit and the welding operation unit move synchronously at the same speed and with the same stroke, completing real-time correction throughout the welding operation. In this step, the welding moving speed and the induction heating moving speed are uniformly controlled at 0.4-0.8 m / min to ensure balanced heat input throughout the process.

[0053] In this embodiment, the main drive motor 21.1 drives the transmission roller 1 to rotate through the main drive reducer 21.2 and the sprocket and chain box 21.3, driving the workpiece to move at a constant speed along the conveying channel; the speed acquisition module collects the welding speed in real time and feeds it back to the PLC controller; the speed matching module automatically adjusts the running speed of the adjustment unit according to the welding speed, so that the medium-high frequency induction heating unit and the workpiece move synchronously at the same speed and with the same stroke, and the welding moving speed and the induction heating moving speed are uniformly controlled at 0.4-0.8 m / min; the displacement sensor 18 detects the moving displacement of the medium-high frequency induction heating unit in real time, ensuring that its stroke is consistent with the welding operation unit, and completes real-time correction along the welding progress, so that the cooling shrinkage at the top of the web plate and the welding shrinkage at the bottom cancel each other out.

[0054] Step S5: Constant Temperature Cooling and Shaping. After the welding and induction heating correction operations are completed, the workpiece is cooled to room temperature by a cooling and shaping unit in conjunction with natural air cooling, completing the T-profile welding deformation correction process. In this step, the circulating air cooling unit 8 of the cooling and shaping unit drives the first air cooling duct 6 and the second air cooling duct 7 to perform directional and uniform air cooling on the heated web and flange thermal deformation areas, controlling the cooling rate within a reasonable range, and then the workpiece is kept stationary and allowed to cool naturally to room temperature.

[0055] In this embodiment, after the workpiece completes all welding and induction heating operations, the welding unit and the medium-high frequency induction heating unit stop operating and reset to the standby position; the cooling and shaping unit starts, and the equipment circulating air cooling unit 8 outputs cooling air through the first air cooling duct 6 and the second air cooling duct 7 to perform directional forced air cooling on the heat deformation areas of the web and wing plates after welding and induction heating, accelerating the uniform cooling of the web and wing plates and controlling shrinkage deformation; after directional air cooling is completed, the workpiece is conveyed to the cooling station by the transmission roller 1 for natural air cooling until the overall temperature of the workpiece drops to room temperature; the laser profiler 20 detects the straightness and angular deformation of the corrected T-profile online, and the qualified workpiece is conveyed to the unloading station to complete the entire processing flow.

[0056] In summary, this technical solution adopts the principle of symmetrical heat input balance on the upper and lower web plates to achieve simultaneous welding and straightening operations. This counteracts the bending and angular deformation caused by uneven shrinkage during welding, solving the deformation rebound problem inherent in traditional passive post-weld straightening. The integrated welding and straightening operation mode eliminates the need for secondary rework and straightening, significantly simplifying the processing flow, greatly improving production efficiency, and adapting to the needs of automated mass production. Utilizing medium-high frequency induction heating combined with closed-loop temperature control technology, the heating area is precisely controllable, acting only on the areas of the web and flanges required for straightening, without damaging the overall metallographic structure and surface protective coating of the base material, effectively ensuring the stability of the component's mechanical properties. It abandons the traditional open flame straightening process, eliminating fire safety hazards and avoiding smoke and dust pollution from baking, significantly improving the working environment. It can meet the processing needs of multiple industries such as shipbuilding, steel structures, and construction machinery, greatly enhancing the equipment's versatility and applicability.

[0057] In the embodiments disclosed in this invention, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this invention according to the specific circumstances.

[0058] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for simultaneous welding and induction heating straightening of T-shaped profiles, characterized in that, include: Workpiece assembly and positioning: The wing plate of the T-section to be processed is placed horizontally on the surface of the transmission roller (1) of the workpiece bearing unit. The web plate is vertically aligned and assembled in the middle position of the wing plate using the wing plate clamping assembly (2) and the web plate clamping assembly (3). The connection position between the web plate and the wing plate is temporarily fixed by the assembly non-spot welding method to ensure that the perpendicularity between the web plate and the wing plate meets the processing standards. The heating unit is aligned and adjusted. The induction coil (4) of the medium- and high-frequency induction heating unit is arranged on the top of the web plate so that the heating center of the induction coil (4) and the welding seams on both sides of the bottom of the web plate are symmetrical about the horizontal center line of the web plate. The gap between the induction coil (4) and the side wall of the web plate is controlled to be 1-3mm. Synchronous heating correction, start the welding operation unit to continuously weld the connection position between the bottom of the web plate and the wing plate, and at the same time, turn on the medium and high frequency induction power supply (5) to continuously heat the top area of ​​the web plate with medium and high frequency induction. Set the heating frequency to 5-40kHz, the heating power to 5-15kW, and the heating temperature to 200-450℃, so that the top of the web plate produces plastic expansion and cooling contraction that match the welding heat input at the bottom, and offsets the bending deformation and angular deformation caused by welding. The heating unit moves in conjunction with the welding operation, and the heating temperature is monitored in real time by the temperature monitoring unit. Based on the closed-loop control of the monitored temperature, the high-frequency induction heating unit and the welding operation unit move synchronously at the same speed and with the same stroke, and the unit completes real-time correction according to the progress of the welding operation. The welding moving speed and the induction heating moving speed are uniformly controlled at 0.4-0.8 m / min to ensure the balance of heat input throughout the process. Constant temperature cooling and shaping: After the welding operation and induction heating correction operation are completed, the workpiece is cooled to room temperature by the cooling and shaping unit in conjunction with natural air cooling to complete the T-profile welding deformation correction process; In this process, the equipment circulating air cooling unit (8) of the cooling and shaping unit drives the first air cooling duct (6) and the second air cooling duct (7) to perform directional forced air cooling on the heat deformation area of ​​the web and wing plate after welding and induction heating, and control the cooling rate within a reasonable range, and then keep the workpiece in place and allow it to cool naturally to room temperature; The method for simultaneous welding and induction heating straightening of T-profiles is implemented through a simultaneous welding and induction heating straightening system for T-profiles, which includes: The frame (9), which is welded from structural steel (9.1) and steel plate (9.2), serves as the mounting base for each unit; The workpiece carrying unit is mounted on the frame (9) and is used to carry and transport T-shaped workpieces; A welding operation unit, which is installed on the frame (9) and located above the workpiece bearing unit, is used to complete the welding operation at the connection position of the web and the flange of the T-section; The medium-high frequency induction heating unit is installed on the adjustment unit and is used to perform medium-high frequency induction heating on the top of the web of the T-profile. An adjustment unit, which is installed on the frame (9) and located on one side of the workpiece bearing unit, is used to drive the medium and high frequency induction heating unit to perform lifting and horizontal and vertical fine adjustment; The cooling and shaping unit includes a circulating air-cooling unit (8), a first air-cooling duct (6), and a second air-cooling duct (7). The air outlet of the circulating air-cooling unit (8) is connected to the first air-cooling duct (6) and the second air-cooling duct (7) respectively. The first air-cooling duct (6) and the second air-cooling duct (7) are symmetrically arranged on both sides of the top of the web plate, and are used to perform directional forced air cooling on the heat deformation area of ​​the web plate and the wing plate after welding and induction heating. A welding fume removal unit is installed on the frame (9) and is used to purify the fumes generated during the welding process; A feeding conveyor (10) is arranged at the input end of the workpiece carrying unit to transport the T-shaped material to be processed to the straightening station; The synchronous control unit is electrically connected to the workpiece bearing unit, welding operation unit, medium and high frequency induction heating unit, adjustment unit, feeding conveyor (10), cooling and shaping unit and welding fume removal unit respectively, and is used to control the operating parameters of each unit in a closed loop to realize synchronous operation of welding and straightening. The synchronization control unit includes: Temperature monitoring unit, which includes an infrared thermometer (17), the infrared thermometer (17) is installed on the medium and high frequency induction heating unit and faces the top of the web plate, for real-time detection of heating temperature; A displacement sensor (18) is mounted on the adjustment unit and is used to detect the moving displacement of the medium- and high-frequency induction heating unit. A speed acquisition module, which is electrically connected to the welding operation unit and the adjustment unit respectively, is used to acquire welding speed and heating movement speed; A laser locator (19) is installed on the medium- and high-frequency induction heating unit to identify the weld position and guide the induction coil (4) to be aligned. A laser profilometer (20) is installed at the output end of the workpiece bearing unit and is used to detect the straightness and angular deformation of the corrected T-profile. The PLC controller has a built-in temperature threshold module and speed matching module. When the heating temperature detected by the infrared thermometer (17) exceeds the preset threshold, the PLC controller automatically adjusts the output power of the medium-high frequency induction power supply (5). The speed matching module automatically adjusts the running speed of the adjustment unit according to the welding speed to ensure that welding and heating are synchronized.

2. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 1, characterized in that, The medium-high frequency induction heating unit includes: A medium- and high-frequency induction power supply (5) is installed on the rack (9) and is used to provide medium- and high-frequency electrical energy; The induction coil (4) is a U-shaped water-cooled copper tube structure, which is fixedly installed on the adjustment unit through a mica insulating skeleton. The coil is snapped across the top of the web plate and the surface is covered with a high-temperature resistant insulating layer. It is suitable for T-shaped web plates with a height of 200-800mm. Two sets of limiting guide rollers are symmetrically arranged on both sides of the mica insulating skeleton and are fitted to the side wall of the web. The heat insulation component is a high-temperature resistant ceramic insulation blanket, which is wrapped around the outside of the induction coil (4).

3. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 1, characterized in that, The adjustment unit includes: A fixed column (11) is vertically installed on the frame (9); The lifting screw (12) is rotatably mounted on the inside of the fixed column (11); The nut (13) is threaded onto the lifting screw (12); The lifting frame (14) is connected to the nut (13) and is equipped with an electric cross slide. The induction coil (4) of the medium-high frequency induction heating unit is installed on the electric cross slide. A handwheel (15) is installed at the end of the lifting screw (12) and is used to drive the lifting screw (12) to rotate so as to drive the lifting frame (14) to rise and fall. The operation box (16), which is installed on the fixed column (11), is used to manually control the start, stop, speed adjustment and fine adjustment of the adjustment unit.

4. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 1, characterized in that, The workpiece bearing unit includes: Multiple drive rollers (1) are mounted in parallel rotation on the frame (9) to form a workpiece conveying channel; The main drive assembly (21) includes a main drive motor (21.1), a main drive reducer (21.2), and a sprocket and chain box (21.3). The main drive motor (21.1) is driven by a variable frequency speed control. The main drive motor (21.1) drives the drive roller (1) to rotate through the main drive reducer (21.2) and the sprocket and chain box (21.3). The speed of the main drive motor (21.1) is linked and matched with that of the adjustment unit. The wing plate clamping assembly (2) and the web plate clamping assembly (3) are symmetrically arranged on both sides of the transmission roller (1) for clamping and centering the wing plate and the web plate. The gantry pressing assembly (26) is mounted above the drive roller (1) and is used to press the workpiece onto the drive roller (1).

5. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 4, characterized in that, The wing plate clamping assembly (2) includes a wing plate hydraulic motor (2.1), a wing plate worm gear reducer (2.2), a wing plate forward and reverse lead screw nut (2.3), two sets of symmetrically arranged guide wheels (2.4), a wing plate telescopic arm (2.5), and a wing plate cylinder (2.6). The wing plate hydraulic motor (2.1) drives the wing plate worm gear reducer (2.2), which in turn drives the wing plate forward and reverse lead screw nut (2.3). The wing plate forward and reverse lead screw nut (2.3) drives the first guide wheel (2.4) to push the workpiece toward the central axis of the transmission roller (1). The wing plate cylinder (2.6) drives the wing plate telescopic arm (2.5), which in turn drives the second guide wheel (2.4) to move toward the workpiece surface for positioning. The web clamping assembly (3) includes a web hydraulic motor (3.1), a web worm gear reducer (3.2), a web forward and reverse lead screw nut (3.3), two sets of clamping wheels (3.4) arranged symmetrically, a web telescopic arm (3.5), and a web cylinder (3.6). The web hydraulic motor (3.1) drives the web worm gear reducer (3.2), which in turn drives the web forward and reverse lead screw nut (3.3). The web forward and reverse lead screw nut (3.3) drives the clamping wheel (3.4) on the first side to push the workpiece toward the central axis of the transmission roller (1). The web cylinder (3.6) drives the web telescopic arm (3.5), which in turn drives the clamping wheel (3.4) on the second side to clamp the workpiece. The gantry pressing assembly (26) includes a pressing cylinder (26.1), a lifting pulley guide rail (26.2), and a pressing roller (26.3). The telescopic end of the pressing cylinder (26.1) is connected to the pressing roller (26.3) and is used to push the pressing roller (26.3) up and down to press the workpiece. The lifting pulley guide rail (26.2) is slidably connected to the pressing roller (26.3) and is used to support the lifting movement of the pressing roller (26.3).

6. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 1, characterized in that, The welding operation unit includes: Submerged arc welding power source (27), which is mounted on the frame (9); The wire feeding assembly includes a wire spool (28) and a wire feeder (29) mounted on the frame (9) for feeding welding wire to the welding torch (30); Two sets of welding torches (30) are symmetrically arranged on both sides of the bottom of the web, corresponding to the two connecting welds of the web and the flange respectively. A welding torch adjustment component (32) is mounted on the frame (9) and connected to the welding torch (30). An adjustment cylinder (33) is mounted on the welding torch adjustment component (32) at a 45-degree angle. The telescopic end of the adjustment cylinder (33) is connected to the welding torch (30) and is used to drive the welding torch (30) to approach or leave the weld. A conductor (34) is installed below the drive roller (1) to directly connect the welding circuit and prevent the welding current from burning the drive roller bearing.

7. The method for simultaneous welding and induction heating straightening of T-profiles according to claim 6, characterized in that, The welding fume removal unit includes: A high-temperature resistant dust suction hose (22) has a dust suction hood (23) installed at its first end, the dust suction hood (23) facing the welding position of the welding gun (30); The first end of the universal vacuum arm (31) is connected to the second end of the high-temperature resistant vacuum hose (22); The suction duct (24) is installed on the frame (9), with its first end connected to the second end of the universal suction arm (31) and its second end connected to the external welding fume extractor (25).

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