Hot riveting method for high-strength steel riveting

Abstract

A high-strength steel riveting hot riveting method, including fixed seat, bolt body and load core bolt; the bolt body is arranged on the top of the fixed seat, and the bolt body is integrated with the fixed seat; the inside of the bolt body is communicated with the inside of the fixed seat; a plurality of outer expansion vertical grooves, a first folding ring groove and a second folding ring groove are arranged on the bolt body; the first folding ring groove and the second outer expansion ring are perpendicular to the outer expansion vertical groove; the load core bolt is arranged in the inside of the bolt body and the fixed seat; the high-strength steel riveting hot riveting method comprises the following steps: a through hole is arranged at the same position of the steel plate to be connected and fixed; the bolt body is heated; the bolt body is immediately inserted into the through hole; the fixed seat is fixed by a force arm clamp; the bolt body is riveted by a special tool; after the bolt body is cooled, the load core bolt is inserted; through the above steps, the bolt body is expanded during pulling, so that the bolt body abuts against the sliding interface, the connection interface sliding is limited, and the anti-loose effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of high-strength steel riveting technology, and in particular to a hot-draw riveting method for high-strength steel riveting. Background Technology

[0002] Steel structure connections refer to the interconnections between steel structure components or parts. Steel structure connections are widely used in construction, bridges, and other engineering fields. The connection method is crucial to the performance and safety of the structure. Traditional steel structure connection methods include welding, bolting, and riveting. High-strength bolting is the most common method; however, during bridge use, bolts are prone to loosening under vibration and load. Once one bolt loosens, the increased load on adjacent bolts can cause other bolts around it to loosen as well. This phenomenon, known as "loosening propagation," exacerbates the loosening problem and ultimately leads to slippage at the steel structure connection interface.

[0003] Welded steel structures are susceptible to thermal deformation and stress concentration. Furthermore, the quality of the weld depends on the skill level of the worker, and operational errors can lead to poor weld quality, affecting the strength of the connection and the safety of the structure.

[0004] Riveting typically provides higher connection strength than bolting, and is especially suitable for structures that need to withstand high loads. However, due to the large size of riveting equipment, it is difficult to install in some confined spaces. Summary of the Invention

[0005] In view of this, this application provides a novel hot-drawn rivet method for riveting high-strength steel, which aims to simplify the riveting process by pulling and causing the hot-drawn rivet body to expand during the pulling process, so that the rivet body abuts against the sliding interface, restricting the sliding of the connection interface and thus achieving the anti-loosening effect.

[0006] According to one aspect of this application, a hot-draw riveting method for high-strength steel is provided, comprising a fixing seat, a bolt body, and a load-bearing core stud; the fixing seat is a hollow plate-like structure with a certain thickness; the bolt body is a hollow cylindrical structure, the bolt body is disposed on the top of the fixing seat, and is integrally formed with the fixing seat, the interior of the bolt body is connected to the interior of the fixing seat, the bolt body has multiple outwardly expanding vertical grooves, a first folding ring groove, and a second folding ring groove, the outwardly expanding vertical grooves are evenly distributed around the outer periphery of the bolt body, the first folding ring groove and the second outwardly expanding ring are perpendicular to the outwardly expanding vertical grooves, and the bolt body has a certain length, suitable for penetrating the parts that need to be connected and fixed. The steel plate; the load-bearing core stud has the same hollow structure as the stud body and the fixing seat, and the load-bearing core stud is disposed inside the stud body and the fixing seat; the hot riveting method for high-strength steel riveting includes the following steps: opening a through hole at the same position of the steel plate to be connected and fixed; heating the stud body, and then immediately inserting the stud body through the steel plate to be connected and fixed, so that the side of the fixing seat connected to the stud body is in contact with one side of the steel plate; the fixing seat is suitable for fixing by a lever arm clamp without displacement or rotation; the stud body is suitable for riveting by a special tool; finally, unloading the special tool, waiting for the stud body to cool and solidify, and then inserting the load-bearing core stud.

[0007] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: first, determining whether the connecting surfaces of the steel plates to be connected and fixed are flat and without defects, and whether the through holes opened on the steel plates are burr-free and have the same diameter.

[0008] In one possible implementation, the bolt body includes a force application zone, a deformation zone, and an expansion zone, which are connected sequentially from top to bottom. After the deformation zone is heated to enhance its plasticity, it can form an outward protrusion structure relative to the bolt body body by applying a riveting force in the axial direction of the bolt body towards the fixing seat. The expansion zone is adapted to expand outward and abut against the through hole in the steel plate to be connected, preventing relative slippage between the steel plates to be connected. The inner circumference of the force application zone is provided with internal threads, and the load-bearing core stud is provided with external threads. The hot riveting method for high-strength steel riveting further includes the following steps: before heating, removing burrs from the internal threads of the force application zone to ensure that the threads and the external threads engage smoothly.

[0009] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following step: applying graphite lubricating powder to the internal thread in the force application area so that lubrication can also be generated when the bolt body is heated.

[0010] In one possible implementation, the outwardly expanding vertical groove, the first folding ring groove, and the second folding ring groove are all disposed on the outer periphery of the deformation zone, and the outwardly expanding ring groove is disposed on the inner periphery of the deformation zone; the hot riveting method for high-strength steel riveting further includes the following steps: locally heating the deformation zone and the expansion zone until the temperature is close to the phase transformation temperature, and the phase transformation temperature is finally determined based on the material, size, heating and riveting resistance, and mechanical properties after heating and cooling of the bolt body.

[0011] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: quickly inserting the bolt into the through hole and ensuring that the fixed seat is correctly positioned in the lever arm fixture.

[0012] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: the heated bolt is suitable for tool hammering, so that the heated bolt can smoothly pass through the through hole.

[0013] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: the bolt body is adapted to be riveted by a rivet gun, the rivet gun includes a motor and a threaded rod, the motor drives the threaded rod to rotate, the rivet gun is connected to the internal thread of the force application area, and the internal thread of the force application area is screwed into the axis without deviating from the axis of the bolt body. After connection, the rivet gun is directly tightened to generate a tensile force. The rotational torque caused by tightening is offset by the reverse force arm provided by the force arm fixture, so that only the tensile force plays a role in the tightening force, causing the deformation area to deform.

[0014] In one possible implementation, the bolt is adapted to be riveted by a rivet gun, which includes a motor and a threaded rod. The motor drives the threaded rod to rotate. The rivet gun is connected to the internal thread of the force application area, and the internal thread of the force application area is screwed into the axis without deviating from the axis of the bolt. After connection, it is adapted to screw in a long screw and directly apply tension to the screw, causing the deformation area to deform.

[0015] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: after riveting is completed, the riveting gun is unloaded, and the deformation zone and the expansion zone are cooled and shaped at room temperature; after shaping, the load-bearing core stud is inserted as needed.

[0016] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: inserting the load-bearing core stud and performing ultrasonic testing on the stud body to ensure that its fixed load should be within 30%-70% of the stud body's yield strength.

[0017] The beneficial effects of this invention are as follows: By setting a fixing seat, a bolt body, and a load-bearing core stud; the fixing seat is a hollow plate-like structure with a certain thickness, providing support for the bolt body and also cooperating with the bolt body to fix the steel plate; the bolt body is a hollow cylindrical structure, integrally formed with the fixing seat, with the interior of the bolt body and the interior of the fixing seat connected. This arrangement facilitates the insertion of the load-bearing core stud later. The bolt body has multiple outwardly expanding vertical grooves, a first folding ring groove, and a second folding ring groove. These grooves are designed so that when pressure is applied to the bolt body, the areas of these grooves expand and fold outward, forming an annular protrusion. The bolt body has a certain length because the steel plate has a certain thickness and quantity requirement, and the bolt head needs to... To penetrate the steel plate, a certain length is required; the load-bearing core stud is set to stabilize and strengthen the tensile and shear properties of the stud body; the hot-draw riveting method for high-strength steel riveting includes the following steps: a through hole is opened at the same position of the steel plates to be connected and fixed; the stud body is heated, and then immediately inserted through the steel plates to be connected and fixed, so that the side of the fixing seat connected to the stud body is in contact with one side of the steel plate; the fixing seat is suitable for fixing by a lever arm clamp, without displacement or rotation; the stud body is suitable for riveting with a special tool; finally, the special tool is unloaded, and after the stud body cools and sets, the load-bearing core stud is inserted; this application, through the above-mentioned hot-draw riveting method for high-strength steel riveting, achieves the simplification of the riveting process by pulling, and promotes the expansion of the stud body during the pulling process, so that the stud body abuts against the sliding interface, restricting the slippage of the connection interface and thus achieving the anti-loosening effect.

[0018] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0020] Figure 1 A flowchart illustrating a hot-draw riveting method for high-strength steel riveting according to an embodiment of this application is shown.

[0021] Figure 2 This illustration shows a detailed structural diagram of the rivet structure in the hot-draw riveting method for high-strength steel riveting according to an embodiment of this application.

[0022] Figure 3 This is a cross-sectional view of the rivet structure in the hot-draw riveting method for high-strength steel riveting according to an embodiment of this application;

[0023] Figure 4 The diagram shows the use of rivets in the hot-draw riveting method for high-strength steel riveting according to an embodiment of this application. Detailed Implementation

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

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention or to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," "hinging," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] like Figure 1As shown, the hot-draw riveting method for high-strength steel riveting includes a fixing seat 140, a bolt body 100, and a load-bearing core stud 200. The fixing seat 140 is a hollow plate-like structure with a certain thickness. The bolt body 100 is a hollow cylindrical structure. The bolt body 100 is located on the top of the fixing seat 140 and is an integral structure with the fixing seat 140. The interior of the bolt body 100 is connected to the interior of the fixing seat 140. The bolt body 100 has multiple outwardly expanding vertical grooves 170, a first folding ring groove 151, and a second folding ring groove 152. The outwardly expanding vertical grooves 170 are evenly distributed around the outer periphery of the bolt body 100. The first folding ring groove 151 and the second outwardly expanding ring 152 are perpendicular to the outwardly expanding vertical grooves 170. The bolt body 100 has a certain length, suitable for penetrating. The steel plates to be connected and fixed; the load-bearing core stud 200 has the same hollow structure as the stud body 100 and the fixing seat 140, and the load-bearing core stud 200 is set inside the stud body 100 and the fixing seat 140; the hot riveting method for high-strength steel riveting includes the following steps: opening a through hole at the same position of the steel plates to be connected and fixed; heating the stud body 100, and then immediately inserting the stud body 100 through the steel plates to be connected and fixed, so that the side of the fixing seat 140 connected to the stud body 100 fits against one side of the steel plate; the fixing seat 140 is suitable for fixing by a lever arm clamp without displacement or rotation; the stud body 100 is suitable for riveting by a special tool; finally, unload the special tool, wait for the stud body 100 to cool and solidify, and then insert the load-bearing core stud 200.

[0030] Specifically, the components include a fixing seat 140, a bolt body 100, and a load-bearing core stud 200. The fixing seat 140 is a hollow plate-like structure with a certain thickness. It provides support for the bolt body 100 and also works with the bolt body 100 to fix the steel plate. The fixing seat 140 has a certain thickness because the steel plate has a certain thickness and there may be multiple steel plates. The thickness also helps prevent breakage during the riveting process. The bolt body 100 is a hollow circle. The column structure is integrated with the fixing base 140. The interior of the bolt body 100 is connected to the interior of the fixing base 140. This design facilitates the insertion of the load-bearing core stud 200 later. The bolt body 100 has multiple outwardly expanding vertical grooves 170, first folding ring grooves 151, and second folding ring grooves 152. The outwardly expanding vertical grooves 170, first folding ring grooves 151, and second folding ring grooves 152 are provided to withstand the riveting force applied to the bolt body 100. In area 152, the portion expands and folds outward, forming a ring-shaped protrusion. The bolt 100 is designed with a certain length because the steel plate has a specific thickness and quantity requirement; the bolt 100 needs to penetrate the steel plate, hence the required length. The load-bearing core stud 200 is provided to stabilize and strengthen the tensile and shear properties of the bolt. The hot-draw riveting method for high-strength steel includes: opening a through hole at the same location on the steel plates to be connected and fixed; heating the bolt 100 initially, and then immediately inserting the bolt 100 through the steel plates to be connected and fixed. Make the side of the fixing seat 140 connected to the bolt body 100 fit against one side of the steel plate; the fixing seat 140 is suitable for fixing by lever arm clamp without displacement or rotation; the bolt body 100 is suitable for riveting by special tools; finally, unload the special tools, wait for the bolt body 100 to cool and solidify, and then insert the load-bearing core stud 200; through the above steps, the area with the outwardly expanding vertical groove 170, the first folding ring groove 151 and the second folding ring groove 152 will have an annular protrusion after heating and riveting, which will cooperate with the fixing seat 140 to fix the steel plate.

[0031] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: First, determine whether the connecting surfaces of the steel plates to be connected and fixed are free of defects, and whether the through holes opened on the steel plates are free of burrs and have the same diameter.

[0032] Specifically, such as Figure 1 As shown, through holes need to be made on the steel plate to be connected and fixed. Each through hole is in the same position, or the position of the through holes can be different as needed. However, each through hole needs to be aligned and the diameter of each through hole needs to be the same so that the bolt body 100 can pass through.

[0033] In one possible implementation, the bolt body 100 includes a force application area 120, a deformation area 110, and an expansion area 130, which are connected sequentially from top to bottom, and the force application area 120 is provided with threads; the hot-draw riveting method for high-strength steel riveting also includes the following steps: before heating, remove burrs from the threads of the force application area 120 to ensure that the threads and external threads engage smoothly.

[0034] Specifically, two, for example Figure 1 As shown, after making a through hole in the steel plate to be connected and fixed, check whether there are burrs on the threads in the force application area 120 of the bolt body 100. If there are burrs, grind them to ensure that the threads and external threads can be screwed in smoothly.

[0035] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: applying graphite lubricating powder to the threads of the force application area 120 so that lubrication can also be generated when the bolt body 100 is heated.

[0036] Specifically, such as Figure 1 As shown, graphite powder is used for high-temperature lubrication. Its purpose is to ensure that the thread of the rivet tool reduces the frictional force along the outer circle of the bolt body 100 when the rivet force is applied, thereby preventing the bolt body 100 from being torsional and sheared.

[0037] In one possible implementation, the outwardly expanding vertical groove 170, the first folding ring groove 151, and the second folding ring groove 152 are provided on the outer periphery of the deformation zone 110, and the outwardly expanding ring groove 160 is provided on the inner periphery of the deformation zone 110; the hot riveting method for high-strength steel riveting also includes the following steps: locally heating the deformation zone 110 and the expansion zone 130 until the temperature is close to the phase transformation temperature, and the phase transformation temperature is finally determined based on the material, size, heating and riveting resistance, and mechanical properties after heating and cooling of the bolt body 100.

[0038] Specifically, such as Figure 1 As shown, after the burrs are removed, the deformation zone 110 and the expansion zone 130 are heated. The heating temperature is ultimately determined based on the material and size of the bolt body 100, the heating and riveting resistance, and the mechanical properties after heating and cooling.

[0039] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: quickly inserting the bolt 100 into the through hole and ensuring that the fixing seat 140 is correctly positioned in the lever arm fixture.

[0040] Specifically, such as Figure 1As shown, to ensure that the hot bolt body 100 does not cool down excessively, the connection and installation actions from heating to installation need to be as fast as possible. Therefore, after heating, the bolt body 100 is quickly inserted into the through hole. Since the axial riveting force applied by the thread during the riveting process is extremely large, its circumferential tangential friction component will exert a large torsional torque on the bolt body 100. The riveting process cannot be completed by the friction between the head of the bolt body 100 and the interface alone. Therefore, the riveting process fixing area must be installed in the lever arm fixture to provide a reverse lever arm for the screwing in of the thread in the force application area 120, so as to complete the riveting process.

[0041] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: the heated bolt 100 is suitable for tool hammering, so that the heated bolt 100 can smoothly pass through the through hole.

[0042] Specifically, such as Figure 1 As shown, to ensure that the plug body 100 does not cool down excessively, the connection and installation actions from heating to installation should be as fast as possible. If necessary, tools can be used to tap it so that the heated and expanded plug body 100 can be smoothly inserted into the through hole.

[0043] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: the bolt body 100 is adapted to be riveted by a rivet gun, the rivet gun is connected to the thread of the force application area 120, and the thread of the force application area 120 is screwed into the axis without deviating from the axis of the bolt body 100. After connection, the rivet gun generates a backward pulling force by means of compressed air.

[0044] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: the bolt body 100 is riveted using a rivet gun, which includes a motor and a threaded rod. The motor rotates the threaded rod, and the rivet gun is connected to the thread of the force application area 120, ensuring that the thread of the force application area 120 is screwed into the axis without deviating from the axis of the bolt body. After connection, the rivet gun is directly tightened, generating a tensile force. The rotational torque caused by tightening is offset by the reverse force arm provided by the force arm fixture, so that only the tensile force plays a role in the tightening force, causing deformation in the deformation area.

[0045] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: the bolt body 100 is suitable for riveting with a rivet gun, the rivet gun includes a motor and a threaded rod, the motor rotates the threaded rod, the rivet gun is connected to the thread of the force application area 120, and the thread of the force application area 120 is screwed into the axis without deviating from the axis of the bolt body. After connection, it is suitable for screwing in a long screw, and applying tension directly to the screw to deform the deformation area.

[0046] Specifically, a rivet gun is generally selected as the special tool. In order to prevent the thread of the force application area 120 from failing during the riveting process and making it impossible to unload the rivet gun or to re-screw the bolt after unloading the rivet gun, it should be ensured that the thread of the force application area 120 does not deviate from the axis of the bolt body 100, and the screwing should be smooth. For applying tension to the rivet gun, two methods can be selected: one is hydraulic and the other is pneumatic.

[0047] In one possible implementation, the hot riveting method for high-strength steel riveting further includes the following steps: after riveting is completed, the riveting gun is unloaded, and the deformation zone 110 and expansion zone 130 are cooled and shaped at room temperature; after shaping, load-bearing mandrels 200 are inserted as needed.

[0048] Specifically, such as Figure 1 As shown, unload the rivet gun and wait for it to cool down. Then, screw in the load-bearing mandrel 200 according to the load requirements to enhance the overall tensile and shear strength.

[0049] In one possible implementation, the hot-draw riveting method for high-strength steel riveting further includes the following steps: inserting the load-bearing core stud and performing ultrasonic testing on the stud body to ensure that its fixed load should be within 30%-70% of the stud body's yield strength.

[0050] When using this application, first drill through holes in the steel plate, grind the thread burrs in the force application area 120, locally heat the deformation area 110 and the expansion area 130 to reach the phase transformation temperature, quickly pass the bolt body 100 through the through hole, and rivet it with a rivet gun to make the deformation area 110 form a protrusion. Then wait for the bolt body 100 to cool down, and insert the load-bearing core stud 200 into the bolt body 100 and the fixing seat 140.

[0051] This application provides a fixing seat 140, a bolt body 100, and a load-bearing core stud 200. The fixing seat 140 supports the bolt body 100 and cooperates with the bolt body 100 to fix the steel plate. The load-bearing core stud 200 is located inside the fixing seat 140 and the bolt body 100 to enhance the overall tensile and shear resistance. The outwardly expanding vertical groove 170, the first folding ring groove 151, and the second folding ring groove 152 are provided so that when a riveting force is applied to the bolt body 100, the deformation zone 110 forms an annular protrusion. The inner circumference of the deformation zone 110 is provided with an outwardly expanding ring groove 160 to prevent the deformation zone 110 from bending inward.

[0052] This application, through the above settings and steps, achieves the goal of simplifying the riveting process by pulling, and causing the bolt to expand during the pulling process, so that the bolt abuts against the sliding interface, restricting the sliding of the connection interface and thus achieving the anti-loosening effect.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hot-draw riveting method for high-strength steel riveting, characterized in that, Includes the fixing seat, the bolt body, and the load-bearing core stud; The fixing base is a hollow plate-like structure with a certain thickness; The bolt body is a hollow cylindrical structure, located on top of the fixing base and integral with it. The interior of the bolt body is connected to the interior of the fixing base. Multiple outwardly expanding vertical grooves are formed on the bolt body, evenly distributed around the outer periphery of the bolt body. The bolt body includes a force application area, a deformation area, and an expansion area, which are connected sequentially from top to bottom. After the deformation area is heated to enhance its plasticity, it can form an outwardly protruding structure relative to the bolt body body after applying a riveting force in the axial direction of the bolt body toward the fixing base. The expansion area is suitable for expanding outward to abut against the through hole in the steel plate to be connected, preventing relative slippage between the connected steel plates. The inner periphery of the force application area is provided with internal threads, and the load-bearing core bolt is provided with external threads. The bolt body is also provided with a first folding ring groove and a second folding ring groove. The first folding ring groove and the second folding ring groove are both provided on the outer periphery of the deformation zone. The first folding ring groove and the second folding ring groove are arranged perpendicular to the outward expansion vertical groove. The bolt body has a certain length and is suitable for penetrating the steel plate that needs to be connected and fixed. The area between the outward expansion vertical groove, the first folding ring groove and the second folding ring groove expands and folds outward to form an annular protrusion, which is the deformation zone. An outer expansion groove is provided on the inner circumference side of the deformation zone; The load-bearing core stud has the same hollow structure as the stud body and the fixing seat, and the load-bearing core stud is disposed inside the stud body and the fixing seat; The hot-draw riveting method for high-strength steel riveting includes the following steps: A through hole is made at the same position on the steel plates that need to be connected and fixed; The bolt body is heated, and then immediately the bolt body is inserted through the steel plate that needs to be connected and fixed, so that the side of the fixing seat connected to the bolt body is in contact with one side of the steel plate; The fixed base is suitable for fixation by a lever arm clamp, without displacement or rotation; The bolt is suitable for riveting using a special tool; Finally, after unloading the special tool and waiting for the plug body to cool and solidify, insert the load-bearing core stud.

2. The hot-draw riveting method for high-strength steel riveting according to claim 1, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: First, determine whether the connecting surfaces of the steel plates to be connected and fixed are flat and without defects, and whether the through holes opened on the steel plates are burr-free and have the same diameter.

3. The hot-draw riveting method for high-strength steel riveting according to claim 2, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: Before heating, remove burrs from the internal threads in the force application area to ensure that the internal and external threads engage smoothly.

4. The hot-draw riveting method for high-strength steel riveting according to claim 3, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: Graphite lubricating powder is applied to the internal thread in the force application area so that the plug can also produce a lubricating effect when heated.

5. The hot-draw riveting method for high-strength steel riveting according to claim 4, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: The deformation zone and the expansion zone are locally heated until the temperature approaches the phase transition temperature. The phase transition temperature is ultimately determined based on the material and size of the bolt, the resistance to heating and riveting, and the mechanical properties after heating and cooling.

6. The hot-draw riveting method for high-strength steel riveting according to claim 5, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: Quickly insert the bolt into the through hole and ensure that the fixing seat is correctly positioned in the lever arm fixture.

7. The hot-draw riveting method for high-strength steel riveting according to claim 6, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: The heated plug is suitable for tool tapping, which facilitates the smooth passage of the heated and expanded plug through the through hole.

8. The hot-draw riveting method for high-strength steel riveting according to claim 7, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: The bolt body is suitable for riveting with a rivet gun. The rivet gun includes a motor and a threaded rod. The motor drives the threaded rod to rotate. The rivet gun is connected to the internal thread of the force application area, and the internal thread of the force application area is screwed into the axis without deviating from the axis of the bolt body. After connection, the rivet gun directly tightens, generating a tensile force. The rotational torque caused by tightening is offset by the reverse force arm provided by the force arm fixture, so that only the tensile force plays a role in the tightening force, causing the deformation area to deform.

9. The hot-draw riveting method for high-strength steel riveting according to claim 7, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: The bolt body is suitable for riveting with a rivet gun. The rivet gun includes a motor and a threaded rod. The motor drives the threaded rod to rotate. The rivet gun is connected to the internal thread of the force application area, and the internal thread of the force application area is screwed into the axis without deviating from the axis of the bolt body. After connection, it is suitable for screwing in a long screw and directly applying tension to the screw, causing the deformation area to deform.

10. The hot-draw riveting method for high-strength steel riveting according to claim 8 or 9, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: After riveting is completed, the riveting gun is unloaded, and the deformed area and the expansion area are cooled and shaped at room temperature. After the shaping is completed, the load-bearing core studs are inserted as needed.

11. The hot-draw riveting method for high-strength steel riveting according to claim 10, characterized in that, The hot-draw riveting method for high-strength steel riveting also includes the following steps: The load-bearing core stud is inserted and the stud body is subjected to ultrasonic testing to ensure that its fixed load is within 30%-70% of the stud body's yield strength.

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