A method for using welding repair equipment for processing the main roll of a ring rolling mill

Abstract

This invention discloses a method for using welding and repair equipment for the main roller of a ring rolling mill, relating to the field of ring rolling mill main roller technology. The invention includes a retractable heat storage component installed at the corner of an S-shaped heat flow channel. The retractable heat storage component is controlled by the hot gas flow rate. When the hot gas flow rate is low, the retractable heat storage component exchanges less heat; when the hot gas flow rate is high, the retractable heat storage component exchanges more heat. This invention guides the airflow along the channel in an orderly manner through a guide block on the inner wall of the S-shaped heat flow channel. The retractable heat storage component at the corner of the channel achieves heat exchange under different hot gas flow rates. When the hot gas flow rate is high, the airflow impact force increases, pushing the circular heat storage block to slide along the inner wall of the annular heat storage block. The spring is compressed, increasing the heat exchange area and improving the preheating speed.

Description

Technical Field

[0001] This invention relates to the field of ring rolling mill main roller technology, specifically to a method for using welding repair equipment for processing ring rolling mill main rollers. Background Technology

[0002] The main roll of the ring rolling mill is the core component of the ring rolling mill. The ring rolling mill drives the metal ring to rotate continuously and applies radial rolling force through the cooperation of the core roll, thereby producing rings with the correct diameter and wall thickness. The main roll of the ring rolling mill is usually made of high-strength alloy steel. When the main roll of the ring rolling mill is subjected to rolling pressure for a long time, it is prone to micro-cracks that can expand into spalling, which can lead to fatigue cracks on the outer wall of the main roll. If these cracks are not repaired in time, they can cause the main roll of the ring rolling mill to break in severe cases, leaving hidden dangers for production safety.

[0003] Existing welding and repair equipment for the main roll of a ring rolling mill involves welding wire onto the cracks in the main roll. Before welding, the main roll typically needs to be preheated. Current main rolls are usually solid and tapered, requiring continuous heating of the wider end. Due to the solid structure, heat conduction is slow, resulting in a continuous temperature rise at one end of the main roll while the other end preheats slowly. This can lead to poor adhesion between the welding wire and the tapered roll surface, requiring the welding wire to wait for the main roll to preheat before welding, thus affecting welding efficiency. To address these issues, the inventor proposes a method for welding and repair equipment used in the processing of the main roll of a ring rolling mill. Summary of the Invention

[0004] To address the problem of slow preheating of tapered rollers, the present invention aims to provide a method for using welding and repair equipment in the main roller processing of a ring rolling mill.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: a welding repair device for processing the main roller of a ring rolling mill, comprising a support frame, a welding assembly and a conical roller, wherein a drive assembly is installed at one end of the support frame, a rotating shaft is fixedly connected to the outer wall of the conical roller, the drive assembly drives the rotating shaft and the conical roller to rotate, the welding assembly performs circumferential repair on the outer wall of the conical roller, a second gear ring is fixedly connected to the outer wall of one end of the rotating shaft, and a hot air intake assembly for controlling the entry of hot air is rotatably provided at one end of the conical roller, the second gear ring driving the hot air intake assembly;

[0006] The conical roller has an S-shaped heat flow channel inside, which is used to fit the shape of the conical roller and is set close to the outer wall of the conical roller.

[0007] The inner wall of the S-shaped heat flow channel is equipped with several flow guide blocks for airflow guidance, and the interior of the S-shaped heat flow channel is equipped with several retractable heat storage components.

[0008] The retractable heat storage component is installed at the corner of the S-shaped heat flow channel. The retractable heat storage component is controlled by the hot gas flow rate. When the hot gas flow rate is low, the retractable heat storage component exchanges less heat, and when the hot gas flow rate is high, the retractable heat storage component exchanges more heat.

[0009] One end of the S-shaped heat flow channel is connected to a chamber, which is connected to two heat flow channels. The heat flow channels are connected along the slope of the cone roller to the end away from the S-shaped heat flow channel.

[0010] A heat discharge assembly is rotatably provided at one end of the conical roller. The heat flow channel is connected to the heat discharge assembly. The heat discharge assembly is used to supplement the heat of the welding process and prevent the outer wall of the welded conical roller from cooling too quickly and causing cracks.

[0011] Preferably, the drive assembly includes a drive motor and a drive gear, the drive motor is mounted on the outer wall of one end of the support frame, and the drive gear is mounted on the output shaft of the drive motor;

[0012] The top of the support frame is provided with two arc-shaped blocks, and the rotating shaft is placed on the two arc-shaped blocks and rotated. A first gear ring is fixedly connected to the outer wall of one end of the rotating shaft, and the first gear ring is threadedly connected to the drive gear.

[0013] Preferably, the welding assembly includes a support frame and a welding torch. A waste collection box is fixedly connected to the outer wall of one end of the support frame. A sliding frame is slidably connected inside the support frame. A stepper motor is mounted on the outer wall of the sliding frame. A stepper gear is connected to the output shaft of the stepper motor. A rack is fixedly connected to the outer wall of the support frame. The rack is threadedly connected to the stepper gear.

[0014] A roller is rotatably connected to the middle of the sliding frame. Welding wire is wound on the outer wall of the roller. A welding gun is installed on the outer wall of the sliding frame. The welding gun extends to the outside of the tapered roller. The welding wire is fed onto the welding gun.

[0015] Preferably, the hot air intake assembly includes a driven gear, a mounting bracket, a fan blade, a hot air flow pipe, and a first rotating ring. The first rotating ring is rotatably connected to one end of the cone roller and communicates with it. The outer wall of the first rotating ring is connected to the hot air flow pipe. The mounting bracket is fixedly connected to the inner wall of the hot air flow pipe. The fan blade is rotatably connected to the mounting bracket. The driven gear is connected to the shaft of the fan blade. The outer wall of the driven gear has several through holes for airflow. The second gear ring is threadedly connected to the driven gear.

[0016] Preferably, an inner cavity is provided between the first rotating ring and the cone roller, and an air inlet is provided at one end of the S-shaped heat flow channel, the air inlet extending into the interior of the inner cavity.

[0017] Preferably, the heat discharge assembly includes a second rotating ring, a retractable hose, a heat discharge pipe, and a valve. The second rotating ring is rotatably connected to one end of the cone roller, the retractable hose is inserted into the second rotating ring, and two heat discharge pipes are connected to the outer wall of the retractable hose.

[0018] Preferably, a valve for flow control is installed on the outer wall of the heat flow pipe.

[0019] Preferably, the retractable heat storage component includes a spring, a circular heat storage block, and an annular heat storage block. An installation groove is installed inside the S-shaped heat flow channel. The annular heat storage block is installed on the inner wall of the installation groove. One end of the spring is connected to the inner wall of the installation groove, and the circular heat storage block is connected to one end of the spring.

[0020] Preferably, the circular heat storage block is slidably connected to the inner wall of the annular heat storage block.

[0021] A method for using welding repair equipment for processing the main roll of a ring rolling mill includes the following steps:

[0022] Step 1: Place the rotating shaft on the top arc-shaped block of the support frame. The first gear ring contacts the drive gear, and the drive motor and drive gear drive the rotating shaft and cone roller to rotate.

[0023] Step 2: Fix the hot air intake assembly. The hot air intake assembly rotates relative to the rotating shaft and the conical roller. The second gear ring drives the hot air intake assembly.

[0024] Step 3: The hot airflow enters the S-shaped hot airflow channel through the hot airflow inlet assembly. The guide block and the retractable heat storage assembly guide the hot airflow while slowing down the flow speed of the hot airflow and increasing the heat exchange time.

[0025] Step four: The hot air flows through the hot air flow channel to the hot air discharge component. The hot air discharge component provides additional heat to the welding process, preventing the outer wall of the welded cone roller from cooling too quickly and causing cracks.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. This invention guides the airflow along the channel in an orderly manner through the guide block on the inner wall of the S-shaped heat flow channel, avoiding local airflow dead zones. The retractable heat storage component at the corner of the channel realizes heat exchange under different hot air flow rates. When the hot air flow rate is large, the airflow impact force increases, pushing the circular heat storage block to slide along the inner wall of the annular heat storage block. The spring is squeezed, the heat exchange area increases, and the heat stored in the annular heat storage block and the circular heat storage block are transferred to the outer wall of the cone roller, improving the preheating speed.

[0028] 2. In the process of welding a circumferential weld, the second gear ring drives the hot air intake assembly. The hot air flows through the hot air intake assembly into the S-shaped hot air channel simultaneously. When it is necessary to increase the welding speed, the rotation speed of the rotating shaft is increased, and the outer wall of the cone roller is welded faster. At the same time, the air intake volume of the hot air intake assembly is increased to improve the preheating speed and match the welding speed, further avoiding the problem of slow preheating speed of the cone roller. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the welding assembly of the present invention.

[0032] Figure 3 This is a schematic diagram of the heat discharge component of the present invention.

[0033] Figure 4 This is a schematic diagram of the hot air intake assembly of the present invention.

[0034] Figure 5 This is a schematic diagram of the conical roller structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the internal structure of the conical roller of the present invention. Figure 1 .

[0036] Figure 7 This is a schematic diagram of the internal structure of the conical roller of the present invention. Figure 2 .

[0037] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at point A in the middle.

[0038] Figure 9 This is a schematic diagram of the S-shaped heat flow channel structure of the present invention.

[0039] In the diagram: 1. Support frame; 2. Drive motor; 3. Drive gear; 4. Welding assembly; 401. Support frame; 402. Sliding frame; 403. Stepper motor; 404. Stepper gear; 405. Rack; 406. Roller; 407. Welding wire; 408. Welding torch; 5. Rotating shaft; 501. First gear ring; 502. Second gear ring; 6. Conical roller; 601. Air inlet; 602. Hot flow channel; 603. S-shaped hot flow channel; 6030. 604. Chamber; 7. Guide block; 8. Hot air intake assembly; 9. Driven gear; 10. Mounting bracket; 11. Fan blade; 12. Hot air flow pipe; 13. First rotating ring; 14. Waste collection box; 15. Hot air discharge assembly; 16. Second rotating ring; 17. Retractable flexible hose; 18. Hot air manifold; 19. Valve; 10. Retractable heat storage assembly; 1001. Spring; 1002. Circular heat storage block; 1003. Annular heat storage block. Detailed Implementation

[0040] 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. Example

[0041] like Figure 1 - Figure 9 As shown, the present invention provides a welding and repair equipment for processing the main roller of a ring rolling mill, including a support frame 1, a welding assembly 4 and a conical roller 6. A drive assembly is installed at one end of the support frame 1. A rotating shaft 5 is fixedly connected to the outer wall of the conical roller 6. The drive assembly drives the rotating shaft 5 and the conical roller 6 to rotate. The welding assembly 4 performs a circumferential repair on the outer wall of the conical roller 6. A second gear ring 502 is fixedly connected to the outer wall of one end of the rotating shaft 5. A hot air intake assembly 7 for controlling the entry of hot air is rotatably provided at one end of the conical roller 6. The second gear ring 502 drives the hot air intake assembly 7.

[0042] The inside of the cone roller 6 is provided with an S-shaped heat flow channel 603. The S-shaped heat flow channel 603 is used to fit the shape of the cone roller 6 and is set close to the outer wall of the cone roller 6.

[0043] Several airflow guiding blocks 604 are installed on the inner wall of the S-shaped heat flow channel 603, and several retractable heat storage components 10 are installed inside the S-shaped heat flow channel 603.

[0044] The retractable heat storage component 10 is installed at the corner of the S-shaped heat flow channel 603. The retractable heat storage component 10 is controlled by the hot gas flow rate. When the hot gas flow rate is low, the retractable heat storage component 10 has less heat exchange. When the hot gas flow rate is high, the retractable heat storage component 10 has more heat exchange.

[0045] One end of the S-shaped hot flow channel 603 is connected to a chamber 6030, and the chamber 6030 is connected to two hot flow channels 602. The hot flow channels 602 are connected along the slope of the cone roller 6 to the end away from the S-shaped hot flow channel 603.

[0046] A heat discharge assembly 9 is rotatably provided at one end of the cone roller 6. The heat flow channel 602 is connected to the heat discharge assembly 9. The heat discharge assembly 9 is used to supplement the heat of welding and prevent the outer wall of the welded cone roller 6 from cooling rapidly and causing cracks.

[0047] The drive assembly includes a drive motor 2 and a drive gear 3. The drive motor 2 is mounted on the outer wall of one end of the support frame 1, and the drive gear 3 is mounted on the output shaft of the drive motor 2.

[0048] The top of the support frame 1 is provided with two arc-shaped blocks. The rotating shaft 5 is placed on the two arc-shaped blocks and rotated. A first gear ring 501 is fixedly connected to the outer wall of one end of the rotating shaft 5. The first gear ring 501 is threadedly connected to the drive gear 3.

[0049] The purpose of this setup is to start the drive motor 2, whose output shaft drives the drive gear 3 to rotate. The drive gear 3 meshes with the first gear ring 501 on the outer wall of the rotating shaft 5, so that the rotating shaft 5 rotates stably on the arc-shaped block at the top of the support frame 1, and finally drives the cone roller 6 fixed to the rotating shaft 5 to rotate synchronously and uniformly.

[0050] like Figure 2 As shown, the welding assembly 4 includes a support frame 401 and a welding torch 408. A waste collection box 8 is fixedly connected to the outer wall of one end of the support frame 401. A sliding frame 402 is slidably connected inside the support frame 401. A stepper motor 403 is installed on the outer wall of the sliding frame 402. A stepper gear 404 is connected to the output shaft of the stepper motor 403. A rack 405 is fixedly connected to the outer wall of the support frame 401. The rack 405 and the stepper gear 404 are threadedly connected.

[0051] A roller 406 is rotatably connected to the middle of the sliding frame 402. Welding wire 407 is wound on the outer wall of the roller 406. A welding gun 408 is installed on the outer wall of the sliding frame 402. The welding gun 408 extends to the outside of the tapered roller 6. Welding wire 407 is fed to the welding gun 408.

[0052] The purpose of this setup is that when the stepper motor 403 starts, it drives the stepper gear 404 to rotate. The stepper gear 404 meshes with the rack 405, driving the sliding frame 402 to slide inside the support frame 401, thereby driving the welding gun 408 on the sliding frame 402 to move along the direction of the generatrix of the cone roller 6.

[0053] The roller 406 in the middle of the sliding frame 402 rotates, continuously feeding the wound welding wire 407 to the welding gun 408; the welding gun 408 is energized to generate an electric arc, which melts the welding wire 407 and applies it to the defect on the outer wall of the conical roller 6. At the same time, the conical roller 6 rotates at a uniform speed and the welding gun 408 moves along the generatrix. The two work together to form a spiral weld bead, realizing the circumferential welding repair of the outer wall of the conical roller 6. The spatter and waste generated during welding fall into the waste collection box 8 for easy subsequent cleaning.

[0054] like Figure 4 As shown, the hot air intake assembly 7 includes a driven gear 701, a mounting bracket 702, a fan blade 703, a hot air flow pipe 704, and a first rotating ring 705. The first rotating ring 705 is rotatably connected to one end of the cone roller 6 and communicates with it. The hot air flow pipe 704 is communicated on the outer wall of the first rotating ring 705. The mounting bracket 702 is fixedly connected to the inner wall of the hot air flow pipe 704. The fan blade 703 is rotatably connected to the mounting bracket 702. The driven gear 701 is connected to the shaft of the fan blade 703. Several through holes for airflow are opened on the outer wall of the driven gear 701. The second gear ring 502 is threadedly connected to the driven gear 701.

[0055] The purpose of this arrangement is that when the rotating shaft 5 rotates, the second gear ring 502 at one end of it rotates synchronously. The second gear ring 502 meshes with the driven gear 701, driving the driven gear 701 and the fan blade 703 to rotate. At this time, the first rotating ring 705 and the cone roller 6 maintain relative rotation to ensure stable hot airflow input and avoid pipe entanglement. The first rotating ring 705 can be fixed by an external structural device.

[0056] like Figure 6 As shown, an inner cavity is provided between the first rotating ring 705 and the cone roller 6. An air inlet 601 is provided at one end of the S-shaped heat flow channel 603. The air inlet 601 extends into the interior of the inner cavity for airflow to enter the interior of the S-shaped heat flow channel 603.

[0057] like Figure 3 As shown, the heat discharge assembly 9 includes a second rotating ring 901, a retractable hose 902, a heat discharge pipe 903, and a valve 904. The second rotating ring 901 is rotatably connected to one end of the cone roller 6. The retractable hose 902 is inserted into the second rotating ring 901. Two heat discharge pipes 903 are connected to the outer wall of the retractable hose 902.

[0058] The purpose of this design is for heat dissipation.

[0059] A valve 904 for flow control is installed on the outer wall of the hot flow manifold 903.

[0060] like Figure 7 As shown, the retractable heat storage assembly 10 includes a spring 1001, a circular heat storage block 1002, and an annular heat storage block 1003. An installation groove is installed inside the S-shaped heat flow channel 603. The annular heat storage block 1003 is installed on the inner wall of the installation groove. One end of the spring 1001 is connected to the inner wall of the installation groove, and the circular heat storage block 1002 is connected to one end of the spring 1001 for storing heat flow and preheating the cone roller 6.

[0061] like Figure 8 As shown, the circular heat storage block 1002 is slidably connected to the inner wall of the annular heat storage block 1003. When the hot air flow is large, the airflow impact force increases, pushing the circular heat storage block 1002 to slide along the inner wall of the annular heat storage block 1003. The spring 1001 is squeezed, the heat exchange area increases, and the heat stored in the annular heat storage block 1003 and the circular heat storage block 1002 is transferred to the outer wall of the cone roller 6, improving the preheating speed.

[0062] A method for using welding repair equipment for processing the main roll of a ring rolling mill includes the following steps:

[0063] Step 1: Place the rotating shaft 5 on the top arc-shaped block of the support frame 1. The first gear ring 501 contacts the drive gear 3. The drive motor 2 and the drive gear 3 drive the rotating shaft 5 and the cone roller 6 to rotate.

[0064] Step 2: Fix the hot air intake assembly 7. The hot air intake assembly 7 rotates relative to the rotating shaft 5 and the cone roller 6. The second gear ring 502 drives the hot air intake assembly 7.

[0065] Step 3: The hot airflow enters the S-shaped hot airflow channel 603 through the hot airflow inlet component 7. The guide block 604 and the retractable heat storage component 10 guide the hot airflow while slowing down the flow speed of the hot airflow and increasing the heat exchange time.

[0066] Step four: The hot air flows through the hot air flow channel 602 to the hot air discharge component 9. The hot air discharge component 9 provides additional heat for the welding process, preventing the outer wall of the welded cone roller 6 from cooling too quickly and causing cracks.

[0067] Working principle: Start the drive motor 2, its output shaft drives the drive gear 3 to rotate. The drive gear 3 meshes with the first gear ring 501 on the outer wall of the rotating shaft 5, so that the rotating shaft 5 rotates stably on the arc block at the top of the support frame 1, and finally drives the cone roller 6 fixed to the rotating shaft 5 to rotate synchronously and uniformly.

[0068] When the rotating shaft 5 rotates, the second gear ring 502 at one end of it rotates synchronously. The second gear ring 502 meshes with the driven gear 701, driving the driven gear 701 and the fan blade 703 to rotate. At this time, the first rotating ring 705 and the cone roller 6 maintain relative rotation to ensure stable hot airflow input and avoid pipe entanglement.

[0069] External hot air enters through the hot air flow pipe 704. The rotating fan blade 703 controls the airflow speed, so that the airflow enters the inner cavity between the first rotating ring 705 and the cone roller 6 through the through hole on the driven gear 701. Then the airflow enters the S-shaped hot air flow channel 603 inside the cone roller 6 through the air inlet 601. The S-shaped structure fits the outer wall of the cone roller 6 to maximize the heat exchange area.

[0070] The guide block 604 on the inner wall of the S-shaped heat flow channel 603 guides the airflow to flow orderly along the channel, avoiding local airflow dead zones. The retractable heat storage component 10 at the corner of the channel realizes heat exchange under different hot gas flow rates.

[0071] When the hot air flow is low, the impact force of the airflow on the circular heat storage block 1002 is small, the spring 1001 contracts, and the circular heat storage block 1002 is located at the top port of the annular heat storage block 1003. Only the circular heat storage block 1002 exchanges with the hot airflow, and the heat exchange area is reduced.

[0072] When the hot air flow is large, the airflow impact force increases, pushing the circular heat storage block 1002 to slide along the inner wall of the annular heat storage block 1003. The spring 1001 is squeezed, the heat exchange area increases, and the heat stored in the annular heat storage block 1003 and the circular heat storage block 1002 is transferred to the outer wall of the cone roller 6, improving the preheating speed.

[0073] The hot airflow passing through the S-shaped hot airflow channel 603 eventually flows into the chamber 6030 and is divided into two hot airflow channels 602. The flow channels 602 are distributed along the slope of the cone roller 6 and are adapted to the cone-shaped structure of the cone roller 6. During the flow process, they play the role of reheating the cone roller 6.

[0074] When the stepper motor 403 starts, it drives the stepper gear 404 to rotate. The stepper gear 404 meshes with the rack 405, driving the sliding frame 402 to slide inside the support frame 401, thereby driving the welding gun 408 on the sliding frame 402 to move along the direction of the generatrix of the cone roller 6.

[0075] The roller 406 in the middle of the sliding frame 402 rotates, continuously feeding the wound welding wire 407 to the welding gun 408; the welding gun 408 is energized to generate an electric arc, which melts the welding wire 407 and deposits it on the defect on the outer wall of the tapered roller 6. At the same time, the tapered roller 6 rotates at a uniform speed and the welding gun 408 moves along the generatrix. The two work together to form a spiral weld bead, realizing the circumferential welding repair of the outer wall of the tapered roller 6. The spatter and waste generated by welding fall into the waste collection box 8 for easy subsequent cleaning.

[0076] During this process, the welding is performed in a circumferential welding manner. The second gear ring 502 drives the hot air intake assembly 7, and the hot airflow enters the S-shaped hot air channel 603 through the hot air intake assembly 7 for synchronous welding. When it is necessary to increase the welding speed, the rotation speed of the rotating shaft 5 is increased, and the outer wall of the cone roller 6 is welded faster. At the same time, the air intake volume of the hot air intake assembly 7 is increased to improve the preheating speed and match the welding speed, further avoiding the problem of slow preheating speed of the cone roller 6. Meanwhile, the diameter of the second gear ring 502 is larger than the diameter of the driven gear 701. During the rotation of the second gear ring 502 and the rotating shaft 5, the driven gear 701 rotates faster relative to the second gear ring 502. When the rotation speed of the rotating shaft 5 changes, the rotation speed of the driven gear 701 and the fan blade 703 changes more significantly, so that the flow rate of the hot airflow can be adjusted in a timely and rapid manner.

[0077] The hot air flow delivered by the hot air flow channel 602 enters the second rotating ring 901, the second rotating ring 901 rotates relative to the cone roller 6, and then is divided into two hot air flow pipes 903 through the retractable hose 902. The air flow rate is controlled by adjusting the valve 904 on the hot air flow pipe 903.

[0078] Insulate the weld and heat-affected zone immediately after welding to slow down the cooling rate and reduce the risk of cracking.

[0079] A secondary heat supplement is applied to the area to be welded before welding to ensure stable temperature in the welding area and improve the weld layer and welding efficiency.

[0080] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0081] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for using a welding repair device for processing the main roll of a ring rolling mill, comprising a support frame (1), a welding assembly (4), and a conical roll (6), wherein a drive assembly is installed at one end of the support frame (1), a rotating shaft (5) is fixedly connected to the outer wall of the conical roll (6), the drive assembly drives the rotating shaft (5) and the conical roll (6) to rotate, and the welding assembly (4) performs circumferential repair on the outer wall of the conical roll (6), characterized in that: A second gear ring (502) is fixedly connected to the outer wall of one end of the rotating shaft (5), and a hot air intake assembly (7) for controlling the entry of hot air is rotatably provided at one end of the cone roller (6). The second gear ring (502) drives the hot air intake assembly (7). The cone roller (6) is provided with an S-shaped heat flow channel (603) inside. The S-shaped heat flow channel (603) is used to fit the shape of the cone roller (6). The S-shaped heat flow channel (603) is set close to the outer wall of the cone roller (6). The inner wall of the S-shaped heat flow channel (603) is equipped with a number of flow guide blocks (604) for airflow guidance, and the interior of the S-shaped heat flow channel (603) is equipped with a number of retractable heat storage components (10). The retractable heat storage component (10) is installed at the corner of the S-shaped heat flow channel (603). The retractable heat storage component (10) is controlled by the hot gas flow rate. When the hot gas flow rate is low, the retractable heat storage component (10) exchanges less heat. When the hot gas flow rate is high, the retractable heat storage component (10) exchanges more heat. One end of the S-shaped heat flow channel (603) is connected to a chamber (6030), and the chamber (6030) is connected to two heat flow channels (602). The heat flow channels (602) are connected along the slope of the cone roller (6) to the end away from the S-shaped heat flow channel (603). A heat discharge assembly (9) is rotatably provided at one end of the conical roller (6). The heat flow channel (602) is connected to the heat discharge assembly (9). The heat discharge assembly (9) is used to supplement the heat of the welding and prevent the outer wall of the welded conical roller (6) from cooling rapidly and causing cracks. The drive assembly includes a drive motor (2) and a drive gear (3). The drive motor (2) is mounted on the outer wall of one end of the support frame (1), and the drive gear (3) is mounted on the output shaft of the drive motor (2). The top of the support frame (1) is provided with two arc-shaped blocks. The rotating shaft (5) is placed on the two arc-shaped blocks and rotated. A first gear ring (501) is fixedly connected to the outer wall of one end of the rotating shaft (5). The first gear ring (501) is threadedly connected to the drive gear (3). Step 1: Place the rotating shaft (5) on the top arc block of the support frame (1), and the first gear ring (501) contacts the drive gear (3). The drive motor (2) and the drive gear (3) drive the rotating shaft (5) and the cone roller (6) to rotate. Step 2: Fix the hot air intake assembly (7), and the hot air intake assembly (7) rotates relative to the rotating shaft (5) and the cone roller (6). The second gear ring (502) drives the hot air intake assembly (7). Step 3: The hot airflow enters the S-shaped hot airflow channel (603) through the hot airflow inlet assembly (7). The guide block (604) and the retractable heat storage assembly (10) guide the hot airflow while slowing down the flow speed of the hot airflow and increasing the heat exchange time. Step four: The hot air flows through the hot air flow channel (602) to the hot air discharge component (9). The hot air discharge component (9) provides additional heat to the welding process to prevent the outer wall of the welded cone roller (6) from cooling rapidly and causing cracks.

2. The method of using the welding and repair equipment for processing the main roll of a ring rolling mill as described in claim 1, characterized in that, The welding assembly (4) includes a support frame (401) and a welding torch (408). A waste collection box (8) is fixedly connected to the outer wall of one end of the support frame (401). A sliding frame (402) is slidably connected inside the support frame (401). A stepper motor (403) is installed on the outer wall of the sliding frame (402). A stepper gear (404) is connected to the output shaft of the stepper motor (403). A rack (405) is fixedly connected to the outer wall of the support frame (401). The rack (405) is threadedly connected to the stepper gear (404). A roller (406) is rotatably connected to the middle of the sliding frame (402). Welding wire (407) is wound on the outer wall of the roller (406). A welding gun (408) is installed on the outer wall of the sliding frame (402). The welding gun (408) extends to the outside of the tapered roller (6). The welding wire (407) is fed onto the welding gun (408).

3. The method of using the welding and repair equipment for processing the main roll of a ring rolling mill as described in claim 2, characterized in that, The hot air intake assembly (7) includes a driven gear (701), a mounting bracket (702), a fan blade (703), a hot air flow pipe (704), and a first rotating ring (705). The first rotating ring (705) is rotatably connected to one end of the cone roller (6) and communicates with it. The hot air flow pipe (704) is communicated on the outer wall of the first rotating ring (705). The mounting bracket (702) is fixedly connected to the inner wall of the hot air flow pipe (704). The fan blade (703) is rotatably connected to the mounting bracket (702). The driven gear (701) is connected to the shaft of the fan blade (703). Several through holes for airflow are opened on the outer wall of the driven gear (701). The second gear ring (502) is threadedly connected to the driven gear (701).

4. The method of using the welding and repair equipment for processing the main roll of a ring rolling mill as described in claim 3, characterized in that, An inner cavity is provided between the first rotating ring (705) and the cone roller (6), and an air inlet (601) is provided at one end of the S-shaped heat flow channel (603), which extends into the interior of the inner cavity.

5. The method of using the welding and repair equipment for processing the main roll of a ring rolling mill as described in claim 4, characterized in that, The heat discharge assembly (9) includes a second rotating ring (901), a retractable hose (902), a heat discharge pipe (903), and a valve (904). The second rotating ring (901) is rotatably connected to one end of the cone roller (6). The retractable hose (902) is inserted into the second rotating ring (901). Two heat discharge pipes (903) are connected to the outer wall of the retractable hose (902).

6. The method of using the welding and repair equipment for processing the main roll of a ring rolling mill as described in claim 5, characterized in that, A valve (904) for flow control is installed on the outer wall of the heat flow manifold (903).

7. The method of using the welding repair equipment for processing the main roll of a ring rolling mill as described in claim 6, characterized in that, The retractable heat storage component (10) includes a spring (1001), a circular heat storage block (1002), and an annular heat storage block (1003). An installation groove is installed inside the S-shaped heat flow channel (603). The annular heat storage block (1003) is installed on the inner wall of the installation groove. One end of the spring (1001) is connected to the inner wall of the installation groove, and the circular heat storage block (1002) is connected to one end of the spring (1001).

8. The method of using the welding repair equipment for processing the main roll of a ring rolling mill as described in claim 7, characterized in that, The circular heat storage block (1002) is slidably connected to the inner wall of the annular heat storage block (1003).

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