A continuous casting roll sleeve repairing device

Abstract

The utility model discloses a kind of continuous casting roller sleeve repairing devices, including first fixed base, the bottom side outer wall of first fixed base is fixed with two mutually parallel first electric slide rail along vertical direction, and the top of first electric slide rail is slidably connected with first electric slide base, two first electric slide base top is fixed with second fixed base, and the top of first fixed base and second fixed base is rotatably installed with clamping mechanism, the clamping mechanism includes rotary block rotatably installed at the top of first fixed base and second fixed base;The utility model is in the process of roller sleeve repair before and repair, using the measure of constantly heating and heat preservation to carry out temperature control treatment, so that the roller sleeve of welding can effectively reduce internal welding stress, and segmented intermittent welding treatment is used in welding process, so that welding stress can also be avoided too large, resulting in the emergence of the situation that the overall strength of roller sleeve after welding repair is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting machine technology, and in particular to a continuous casting roll sleeve repair device. Background Technology

[0002] The working principle of a continuous casting machine is to inject molten metal through a tundish into a crystallizer, where it cools and solidifies to form a billet shell. The shell is then pulled out using equipment such as a straightener and gradually cooled to form a continuous cast billet. Therefore, the continuous casting machine is a crucial piece of equipment in steel production, and the proper functioning of the continuous casting rolls is essential for ensuring billet quality, production efficiency, and manufacturing costs.

[0003] Continuous casting rolls operate in harsh environments characterized by high temperature, humidity, high pressure, high friction, and corrosion, making them highly susceptible to wear, deformation, corrosion, and damage. Replacing all damaged roll sleeves with new ones would excessively increase production costs. Repairing the roll sleeves not only ensures the quality of the repair but also extends their service life, significantly reducing manufacturing costs and improving economic efficiency. However, existing roll sleeve repair devices often suffer from poor overall stability after repair, with welds prone to delamination and detachment, resulting in a shorter service life for the repaired roll sleeves. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a continuous casting roll sleeve repair device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A continuous casting roll sleeve repair device includes a first fixed base. Two parallel first electric slide rails are fixed vertically on the outer wall of one side of the bottom of the first fixed base. A first electric slide block is slidably connected to the top of the first electric slide rails. A second fixed base is fixed to the top of the two first electric slide blocks. A clamping mechanism is rotatably installed on the top of both the first and second fixed bases. The clamping mechanism includes a rotating block rotatably installed on the top of the first and second fixed bases. A sliding groove rail is fixed to the outer wall of the opposite side of the two rotating blocks by screws. Two sliding groove blocks are slidably connected to the inner wall of the sliding groove rail. A bidirectional adjusting screw is screwed to the middle of the two sliding groove blocks. A worm gear is welded to the outer wall of one of the rotating blocks. A worm is meshed at the bottom of the worm gear. The worm is connected to a first servo motor through a coupling. The bottom of the first servo motor is installed on the side wall of the first fixed base by fixing bolts.

[0007] The bottom of the first fixed base is welded with a fixed base plate between two first electric slide rails, and the top of the fixed base plate has a guide groove. The inner wall of the guide groove is provided with a lifting mechanism, and the lifting mechanism includes a guide wheel that rolls on the inner wall of the guide groove. The top of the guide wheel is provided with a rectangular base plate, and a hydraulic jack is fixed to the top of the rectangular base plate by bolts. The top piston rod of the hydraulic jack is fixed to a rectangular top plate with an arc-shaped support block. A heating mechanism is provided on one side of the top of the first fixed base.

[0008] The heating mechanism includes a mounting bracket fixed to one side of the top of the first fixed base, and a second electric slide rail is mounted vertically on the top of the mounting bracket. A second electric slide block is slidably connected to the inner wall of the second electric slide rail, and an electric telescopic rod is connected to the bottom of the second electric slide block. A first arc-shaped cover is fixed at the piston rod at the bottom of the electric telescopic rod, and an electromagnetic induction heating coil is installed at the bottom of the first arc-shaped cover. A conveying guide rail is mounted on the other side of the top of the first fixed base.

[0009] A conveying guide block is slidably inserted into the inner wall of the conveying guide rail, and a threaded rod is screwed into the axis of the conveying guide block. The end of the threaded rod is connected to a second servo motor via a coupling. A maintenance mechanism is installed on the top of the conveying guide block. The maintenance mechanism includes a fixed base welded to the top of the conveying guide block, and a rotating support platform is rotatably inserted into the top of the fixed base. A C-shaped slide rail is installed parallel to the top of the rotating support platform along the width direction, and a T-shaped slider is slidably inserted into the inner wall of the C-shaped slide rail. An adjustment plate is welded to the top of the T-shaped slider, and a servo cylinder is connected to one side of the T-shaped slider.

[0010] As a further embodiment of this utility model: the outer wall of the end of the sliding groove block is welded with symmetrically distributed arc-shaped inner support blocks, and the outer walls of the arc-shaped inner support blocks are all bonded with anti-slip rubber pads, and the outer wall of the anti-slip rubber pads is provided with anti-slip protrusions.

[0011] As a further improvement of this utility model: the bottom inner wall of the guide groove has a through slag discharge channel along the inclined direction, and the top of the fixed base plate is welded with inclined slag guide plates on both sides of the outer wall of the guide groove, and the length of the slag guide plates is adapted to the length of the fixed base plate.

[0012] As a further embodiment of this utility model: L-shaped limiting brackets are welded to the outer walls of both ends of the top of the fixed base plate, and limiting guide posts are welded to the outer walls of both ends of the bottom of the rectangular top plate. The limiting guide posts are located directly above the limiting brackets, and the limiting brackets and the limiting guide posts form an interlocking fit.

[0013] As a further embodiment of this utility model: the outer walls at both ends of the bottom of the first arc-shaped cover are hinged and fixed with second arc-shaped covers, and electric heating rods are installed at equal intervals on the inner walls at both ends of the two second arc-shaped covers, and K-type thermocouples are installed on the inner walls at both ends of the first arc-shaped cover.

[0014] As a further improvement of this utility model: both the fixed base and the rotating support platform have a positioning hole through one side of their outer wall, and a positioning pin is inserted and fixed into the inner wall of the positioning hole.

[0015] As a further embodiment of this utility model: a grinding block is installed on one side of the top of the adjustment platform, and two sets of pattern-changing tools are fixed on both sides of the grinding block along the inclined direction; a welding gun is installed on the other side of the top of the adjustment platform.

[0016] As a further embodiment of this utility model: the axes of the rotating blocks on the first fixed base and the second fixed base are both located on the same straight line, and the welding gun and the grinding block are both located on the same horizontal plane as the rotating blocks.

[0017] A method for repairing the sleeve of a continuous casting roll includes the following steps:

[0018] S1: Disassembly and cleaning. First, use external electric hydraulic disassembly tools, electric wrenches, and separate manual hydraulic jacks to disassemble the continuous casting rolls that need to be repaired on the continuous casting machine. Then, use external cleaning agents and high-pressure cleaners to perform high-pressure rinsing on the continuous casting roll sleeves, thereby completing the cleaning of the outer wall of the continuous casting roll sleeves.

[0019] S2: Cleaning and Inspection. After thoroughly cleaning the removed roller sleeve, first use the first electric slide at the bottom to adjust the second fixed base to its maximum stroke. Place the roller sleeve on the top outer wall of the arc-shaped support block. Then, use the hydraulic jack at the bottom to slowly lift the roller sleeve. When the roller sleeve's axis moves to the same height as the rotating block, rotate the bidirectional adjusting screw to bring the two arc-shaped inner support blocks closer together. Use the first electric slide to slowly bring the second fixed base closer together. When the two arc-shaped inner support blocks are inserted into the ends of the roller sleeve, rotate the bidirectional adjusting screw in the opposite direction to expand and fix the inner wall of the roller shaft using the arc-shaped inner support blocks. The limit is set, and at the same time, the first electric slide block is fixed on the first electric slide rail by means of the internal locking structure. The rotating support table is rotated to bring the grinding block and the pattern-changing tool close to the outer wall of the roller sleeve. After the rotating support table is fixed, the bottom servo cylinder drives the grinding block and the pattern-changing tool to press against the outer wall of the roller sleeve. The first servo motor is started to drive the worm gear to rotate, so that the oxide layer on the outer wall of the roller sleeve can be ground by the grinding block. The two sets of pattern-changing tools set in opposite directions will scratch equally distributed grid marks on the outer wall of the roller sleeve. After that, the roller sleeve is removed for further cleaning, and then the flaw detector and other equipment are used to check whether there are cracks or other defects inside.

[0020] S3: Heat treatment. After the oxide layer on the outer wall of the roller sleeve is polished and grid marks are made on the outer wall of the roller sleeve, the second fixed base is adjusted to the maximum stroke position, and the roller sleeve is placed on the top outer wall of the arc-shaped support block. The roller sleeve is slowly lifted with the help of a hydraulic jack. When the axis of the roller sleeve moves to the same height as the rotating block, the bidirectional adjusting screw is rotated to bring the arc-shaped inner support blocks on both sides closer together. The axis of the electromagnetic induction heating coil is adjusted to be on the same straight line as the axis of the roller sleeve with the help of an electric telescopic rod. Then the second fixed base is slowly brought closer. When the arc-shaped inner support block is inserted into the two ends of the roller sleeve, the bidirectional adjusting screw is rotated in the opposite direction to expand and fix the inner wall of the roller shaft with the help of the arc-shaped inner support block. At the same time, the first electric slide is fixed on the first electric slide rail with the help of the internal locking structure. Then the bottom arc-shaped support block is retracted to start the electromagnetic induction heating coil, so that the outer wall of the roller sleeve can be heated. After heating, the electric heating rod is used for constant temperature maintenance.

[0021] S4: Welding Repair. After induction heating of the roller sleeve, rotate the rotating support table to adjust the welding gun to a position close to the outer wall of the roller sleeve. Then, start the welding gun and use external wear-resistant welding wire to weld the missing part of the outer wall of the roller sleeve. Because the outer wall of the roller sleeve has grid marks, the overall friction can be increased, which makes it easier for the welding wire material to adhere to the outer wall of the roller sleeve, thus improving the overall strength after welding. In order to eliminate welding stress during the welding process, it is necessary to weld in sections. When welding slag appears on the outer wall during the welding process, it is necessary to use external hammering equipment to knock off the slag layer. The welded roller sleeve part also needs to be subjected to appropriate heat treatment to eliminate welding stress and improve the microstructure.

[0022] S5: Turning process. After the damaged part of the outer wall of the roller sleeve is welded with wear-resistant welding wire, the welded part is raised. The welded roller sleeve is then installed on a lathe. The excess part of the outer wall of the roller sleeve is turned according to the design requirements to remove the raised layer of the outer wall of the roller sleeve, restore its original size and shape, and remove the oxide scale and residual welding slag on the surface by sandblasting machine. Then, a polishing machine is used to grind and polish to improve the surface finish.

[0023] S6: Acceptance and installation. After the roller sleeve is repaired, use testing equipment to test the hardness, dimensional accuracy, surface roughness and internal quality of the repaired roller sleeve to ensure that it meets the usage requirements. The qualified repaired roller sleeve is then reinstalled on the continuous casting roller shaft and debugged and tested.

[0024] Compared with the prior art, the present invention provides a continuous casting roll sleeve repair device, which has the following beneficial effects:

[0025] 1. The roller sleeve repair device of this design thoroughly grinds the oxide layer on the outer wall of the roller sleeve using a grinding block before the roller sleeve welding repair process, thereby avoiding the subsequent desoldering. After grinding, the outer wall of the roller sleeve is marked with grid lines by a pattern-changing tool, which increases the roughness of the outer wall of the roller sleeve, making it easier for the wear-resistant welding wire to bond with the outer wall of the roller sleeve and improving the overall strength after repair.

[0026] 2. The roller sleeve repair device designed in this paper adopts continuous heating and heat preservation measures for temperature control before and during the repair process. This can effectively reduce the internal welding stress of the welded roller sleeve. In addition, the welding process adopts segmented intermittent welding treatment, which can also avoid excessive welding stress, resulting in insufficient overall strength of the roller sleeve after welding repair.

[0027] 3. The roller sleeve repair device designed in this paper uses an adjustable-height arc-shaped support block at the bottom to support and assist in positioning the roller sleeve during welding repair. This can greatly reduce the physical effort required for manual positioning and fixing, while also saving fixing time and improving work efficiency. The adjustable-spacing arc-shaped inner support blocks at both ends of the roller sleeve can quickly adapt and support roller sleeves of different sizes, thereby effectively improving the practicality of the repair device.

[0028] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a continuous casting roll sleeve repair device proposed in this utility model;

[0030] Figure 2 This is a front view of the overall three-dimensional structure of a continuous casting roll sleeve repair device proposed in this utility model;

[0031] Figure 3 This is a side view of the overall three-dimensional structure of a continuous casting roll sleeve repair device proposed in this utility model;

[0032] Figure 4 This is a bottom view of the overall structure of a continuous casting roll sleeve repair device proposed in this utility model;

[0033] Figure 5 This is a schematic diagram of the lifting mechanism of a continuous casting roll sleeve repair device proposed in this utility model;

[0034] Figure 6 This is a first-view structural schematic diagram of a continuous casting roll sleeve repair device proposed in this utility model;

[0035] Figure 7This is a schematic diagram of the repair mechanism structure of a continuous casting roll sleeve repair device proposed in this utility model;

[0036] Figure 8 This is a side view of the repair mechanism structure of a continuous casting roll sleeve repair device proposed in this utility model.

[0037] In the diagram: 1. First fixed base; 2. First electric slide rail; 3. First electric slide block; 4. Second fixed base; 5. Rotating block; 6. Sliding rail; 7. Sliding block; 8. Arc-shaped inner support block; 9. Bidirectional adjusting screw; 10. Worm gear; 11. Worm; 12. First servo motor; 13. Fixed base plate; 14. Guide groove; 15. Slag discharge channel; 16. Guide wheel; 17. Rectangular base plate; 18. Hydraulic jack; 19. Rectangular top plate; 20. Arc-shaped support block; 21. L-shaped limit bracket; 22. Limiting guide post; 23. Mounting bracket; 24. Second 25. Electric slide rail; 26. Second electric slide block; 27. Electric telescopic rod; 28. First arc-shaped cover; 29. ​​Electromagnetic induction heating coil; 30. Second arc-shaped cover; 31. Electric heating rod; 32. K-type thermocouple; 33. Conveyor rail; 34. Conveyor block; 35. Threaded rod; 36. Second servo motor; 37. Fixed base; 38. Rotating support platform; 39. Positioning socket; 40. Positioning pin; 41. C-type slide rail; 42. T-type slider; 43. Adjustment platform; 44. Servo cylinder; 45. Grinding block; 46. Pattern modification tool; 47. Welding torch. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] Example 1:

[0040] A continuous casting roll sleeve repair device, in this embodiment, as follows: Figure 1-8As shown, the system includes a first fixed base 1. Two parallel first electric slide rails 2 are fixed vertically on one side of the bottom outer wall of the first fixed base 1. A first electric slide block 3 is slidably connected to the top of the first electric slide rail 2. A second fixed base 4 is fixed to the top of the two first electric slide blocks 3. A clamping mechanism is rotatably installed on the top of both the first fixed base 1 and the second fixed base 4. The clamping mechanism includes a rotating block 5 rotatably installed on the top of the first fixed base 1 and the second fixed base 4. A sliding groove rail 6 is fixed to the outer wall of the opposite side of the two rotating blocks 5 by screws. Two sliding groove blocks 7 are slidably connected to the inner wall of the sliding groove rail 6. A bidirectional adjusting screw 9 is screwed to the middle of the two sliding groove blocks 7. A worm gear 10 is welded to the outer wall of one of the rotating blocks 5. A worm 11 is meshed at the bottom of the worm gear 10. A first servo motor 12 is connected to the worm 11 through a coupling. The bottom of the first servo motor 12 is installed on the side wall of the first fixed base 1 by fixing bolts.

[0041] The bottom of the first fixed base 1 is located between two first electric slide rails 2 and a fixed base plate 13 is welded thereon. The top of the fixed base plate 13 has a guide groove 14. The inner wall of the guide groove 14 is provided with a lifting mechanism, and the lifting mechanism includes a guide wheel 16 that rolls on the inner wall of the guide groove 14. The top of the guide wheel 16 is provided with a rectangular base plate 17, and the top of the rectangular base plate 17 is fixed with a hydraulic jack 18 by bolts. The top piston rod of the hydraulic jack 18 is fixedly welded with a rectangular top plate 19 of an arc-shaped support block 20, and a heating mechanism is provided on one side of the top of the first fixed base 1.

[0042] The heating mechanism includes a mounting bracket 23 fixed to one side of the top of the first fixed base 1, and a second electric slide rail 24 is mounted on the top of the mounting bracket 23 in a vertical direction. A second electric slide block 25 is slidably connected to the inner wall of the second electric slide rail 24, and an electric telescopic rod 26 is connected to the bottom of the second electric slide block 25. A first arc-shaped cover 27 is fixed at the piston rod at the bottom of the electric telescopic rod 26, and an electromagnetic induction heating coil 28 is installed at the bottom of the first arc-shaped cover 27. A conveying guide rail 32 is installed on the other side of the top of the first fixed base 1.

[0043] The inner wall of the conveying guide rail 32 is slidably inserted with a conveying guide block 33, and a threaded rod 34 is screwed at the axis of the conveying guide block 33. The end of the threaded rod 34 is connected to a second servo motor 35 through a coupling. A maintenance mechanism is installed on the top of the conveying guide block 33. The maintenance mechanism includes a fixed base 36 welded to the top of the conveying guide block 33, and a rotating support table 37 is rotatably inserted into the top of the fixed base 36.

[0044] The outer wall of the sliding groove 7 is welded with symmetrically distributed arc-shaped inner support blocks 8, and the outer walls of the arc-shaped inner support blocks 8 are all bonded with anti-slip rubber pads. The outer wall of the anti-slip rubber pads is provided with anti-slip protrusions. The bottom inner wall of the guide groove 14 is opened with a through slag discharge groove 15 along the inclined direction. The top of the fixed base plate 13 is located on both sides of the outer wall of the guide groove 14 with inclined slag guide plates. The length of the slag guide plates is adapted to the length of the fixed base plate 13.

[0045] Before the roller sleeve welding repair process, the oxide layer on the outer wall of the roller sleeve is thoroughly ground with grinding block 44 to avoid subsequent weld desoldering. After grinding, the outer wall of the roller sleeve is marked with grid lines by the pattern-changing tool 45, which increases the roughness of the outer wall of the roller sleeve, making it easier for the wear-resistant welding wire to bond with the outer wall of the roller sleeve and improving the overall strength after repair.

[0046] The top two ends of the fixed base plate 13 are welded with L-shaped limiting brackets 21, and the bottom two ends of the rectangular top plate 19 are welded with limiting guide posts 22. The limiting guide posts 22 are located directly above the L-shaped limiting brackets, and the L-shaped limiting brackets and the limiting guide posts 22 form an insertion fit. The bottom two ends of the first arc-shaped cover 27 are hinged and fixed with second arc-shaped cover 29, and the inner walls of the two ends of the two second arc-shaped cover 29 are equipped with equally spaced electric heating rods 30. The inner walls of the two ends of the first arc-shaped cover 27 are equipped with K-type thermocouples 31.

[0047] Before and during the repair of the roller sleeve, temperature control measures such as continuous heating and heat preservation are adopted. This can effectively reduce the internal welding stress of the welded roller sleeve. In addition, the welding process is carried out in segments and intermittently, which can also avoid excessive welding stress, resulting in insufficient overall strength of the roller sleeve after welding repair.

[0048] The fixed base 36 and the rotating support platform 37 both have a positioning hole 38 through one side of their outer wall, and a positioning pin 39 is inserted and fixed into the inner wall of the positioning hole 38.

[0049] The top of the rotating support platform 37 is equipped with a C-shaped slide rail 40 parallel to the width direction, and a T-shaped slider 41 is slidably inserted into the inner wall of the C-shaped slide rail 40. An adjustment plate 42 is welded to the top of the T-shaped slider 41, and a servo cylinder 43 is connected to one side of the T-shaped slider 41.

[0050] Example 2:

[0051] A continuous casting roll sleeve repair device, such as Figure 1-4As shown, this embodiment makes the following additions based on embodiment 1: a grinding block 44 is installed on one side of the top of the adjustment platform 42, and two sets of pattern-changing tools 45 are fixed on both sides of the grinding block 44 along the inclined direction; a welding gun 46 is installed on the other side of the top of the adjustment platform 42.

[0052] The axes of the rotating blocks 5 on the first fixed base 1 and the second fixed base 4 are both on the same straight line, and the welding gun 46 and the grinding block 44 are both on the same horizontal plane as the rotating blocks 5.

[0053] During welding repair, the roller sleeve is supported and positioned by the adjustable bottom arc-shaped support block 20, which can greatly reduce the physical effort required for manual positioning and fixing, and also save fixing time and improve work efficiency. The roller sleeve is equipped with adjustable arc-shaped inner support blocks 8 at both ends, which can quickly adapt and support roller sleeves of different sizes, thereby effectively improving the practicality of the repair device.

[0054] A method for repairing the sleeve of a continuous casting roll includes the following steps:

[0055] S1: Disassembly and cleaning. First, use external electric hydraulic disassembly tools, electric wrenches, and separate manual hydraulic jacks to disassemble the continuous casting rolls that need to be repaired on the continuous casting machine. Then, use external cleaning agents and high-pressure cleaners to perform high-pressure rinsing on the continuous casting roll sleeves, thereby completing the cleaning of the outer wall of the continuous casting roll sleeves.

[0056] S2: Cleaning and Inspection. After thoroughly cleaning the removed roller sleeve, first use the first electric slide 3 at the bottom to adjust the second fixed base 4 to its maximum stroke position, and place the roller sleeve on the top outer wall of the arc-shaped support block 20. Then, use the hydraulic jack 18 at the bottom to slowly lift the roller sleeve. When the roller sleeve's axis moves to the same height as the rotating block 5, rotate the bidirectional adjusting screw 9 to bring the arc-shaped inner support blocks 8 on both sides closer together, and use the first electric slide 3 to slowly bring the second fixed base 4 closer together. When the arc-shaped inner support blocks 8 on both sides are inserted into the inside of the two ends of the roller sleeve, rotate the bidirectional adjusting screw 9 in the opposite direction to expand and fix the inner wall of the roller shaft with the help of the arc-shaped inner support blocks 8, and... At the same time, the first electric slide block 3 is fixed on the first electric slide rail 2 by means of the internal locking structure, and the rotating support table 37 is rotated to bring the grinding block 44 and the pattern-changing tool 45 close to the outer wall of the roller sleeve. After the rotating support table 37 is fixed, it works with the bottom servo cylinder 43 to drive the grinding block 44 and the pattern-changing tool 45 to press against the outer wall of the roller sleeve. The first servo motor 12 is started to drive the worm gear 10 to rotate, so that the oxide layer on the outer wall of the roller sleeve can be ground by the grinding block 44. The two sets of pattern-changing tools 45 set in opposite directions will scratch equally distributed grid marks on the outer wall of the roller sleeve. After that, the roller sleeve is removed for further cleaning, and then the flaw detector and other equipment are used to check whether there are cracks or other defects inside.

[0057] S3: Heat treatment. After the oxide layer on the outer wall of the roller sleeve is polished and grid marks are made on the outer wall of the roller sleeve, the second fixed base 4 is adjusted to the maximum stroke position, and the roller sleeve is placed on the top outer wall of the arc-shaped support block 20. The roller sleeve is slowly lifted with the help of the hydraulic jack 18. When the axis of the roller sleeve moves to the same height as the rotating block 5, the bidirectional adjusting screw 9 is rotated to bring the arc-shaped inner support blocks 8 on both sides closer together. The axis of the electromagnetic induction heating coil 28 is adjusted to the same height as the axis of the roller sleeve with the help of the electric telescopic rod 26. In a straight line, the second fixed base 4 is slowly brought closer. When the arc-shaped inner support block 8 is inserted into the two ends of the roller sleeve, the bidirectional adjusting screw 9 is rotated in the opposite direction to expand and fix the inner wall of the roller shaft with the help of the arc-shaped inner support block 8. At the same time, the first electric slide block 3 is fixed on the first electric slide rail 2 with the help of the internal locking structure. Then the arc-shaped support block 20 at the bottom is retracted to start the electromagnetic induction heating coil 28, so that the outer wall of the roller sleeve can be heated. After heating, the electric heating rod 30 is used for constant temperature maintenance.

[0058] S4: Welding repair. After induction heating is applied to the roller sleeve, the rotating support table 37 is rotated to adjust the welding gun 46 to a position close to the outer wall of the roller sleeve. Then, the welding gun 46 is started and used with external wear-resistant welding wire to weld the missing part of the outer wall of the roller sleeve. Since the outer wall of the roller sleeve has grid marks, the overall friction can be increased, which makes it easier for the welding wire material to adhere to the outer wall of the roller sleeve and improves the overall strength after welding. In order to eliminate welding stress during the welding process, it is necessary to weld in sections. When welding slag appears on the outer wall during the welding process, it is necessary to use external hammering equipment to knock off the welding slag layer. The welded roller sleeve part also needs to be subjected to appropriate heat treatment to eliminate welding stress and improve the microstructure.

[0059] S5: Turning process. After the damaged part of the outer wall of the roller sleeve is welded with wear-resistant welding wire, the welded part is raised. The welded roller sleeve is then installed on a lathe. The excess part of the outer wall of the roller sleeve is turned according to the design requirements to remove the raised layer of the outer wall of the roller sleeve, restore its original size and shape, and remove the oxide scale and residual welding slag on the surface by sandblasting machine. Then, a polishing machine is used to grind and polish to improve the surface finish.

[0060] S6: Acceptance and installation. After the roller sleeve is repaired, use testing equipment to test the hardness, dimensional accuracy, surface roughness and internal quality of the repaired roller sleeve to ensure that it meets the usage requirements. The qualified repaired roller sleeve is then reinstalled on the continuous casting roller shaft and debugged and tested.

[0061] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A continuous casting roll sleeve repair device, comprising a first fixed base (1), characterized in that, Two parallel electric slide rails (2) are fixed vertically on one side of the bottom of the first fixed base (1), and a first electric slide block (3) is slidably connected to the top of the first electric slide rail (2). A second fixed base (4) is fixed to the top of the two first electric slide blocks (3), and a clamping mechanism is rotatably installed on the top of both the first fixed base (1) and the second fixed base (4). The clamping mechanism includes a rotating block (5) rotatably installed on the top of the first fixed base (1) and the second fixed base (4), and the two rotating blocks... (5) A sliding groove rail (6) is fixed to the outer wall of the opposite side by screws. Two sliding groove blocks (7) are slidably connected to the inner wall of the sliding groove rail (6). A bidirectional adjusting screw (9) is screwed to the middle of the two sliding groove blocks (7). A worm wheel (10) is welded to the outer wall of one of the rotating blocks (5). A worm (11) is meshed at the bottom of the worm wheel (10). The worm (11) is connected to a first servo motor (12) through a coupling. The bottom of the first servo motor (12) is installed on the side wall of the first fixed base (1) by fixing bolts. The bottom of the first fixed base (1) is located between two first electric slide rails (2) and a fixed base plate (13) is welded thereon. The top of the fixed base plate (13) has a guide groove (14). The inner wall of the guide groove (14) is provided with a lifting mechanism. The lifting mechanism includes a guide wheel (16) that rolls on the inner wall of the guide groove (14). The top of the guide wheel (16) is provided with a rectangular base plate (17). The top of the rectangular base plate (17) is fixed with a hydraulic jack (18) by bolts. The top piston rod of the hydraulic jack (18) is fixed with a rectangular top plate (19) with an arc-shaped support block (20). A heating mechanism is provided on one side of the top of the first fixed base (1). The heating mechanism includes a mounting bracket (23) fixed on one side of the top of the first fixed base (1), and a second electric slide rail (24) is mounted on the top of the mounting bracket (23) in a vertical direction. A second electric slide block (25) is slidably connected to the inner wall of the second electric slide rail (24), and an electric telescopic rod (26) is connected to the bottom of the second electric slide block (25). A first arc-shaped cover (27) is fixed at the piston rod at the bottom of the electric telescopic rod (26), and an electromagnetic induction heating coil (28) is installed at the bottom of the first arc-shaped cover (27). A conveying guide rail (32) is installed on the other side of the top of the first fixed base (1). A conveying guide block (33) is slidably inserted into the inner wall of the conveying guide rail (32), and a threaded rod (34) is screwed into the axis of the conveying guide block (33). The end of the threaded rod (34) is connected to a second servo motor (35) through a coupling. A maintenance mechanism is installed on the top of the conveying guide block (33). The maintenance mechanism includes a fixed base (36) welded to the top of the conveying guide block (33), and a rotating support platform (37) is rotatably inserted into the top of the fixed base (36). A C-shaped slide rail (40) is installed parallel to the top of the rotating support platform (37) along the width direction. A T-shaped slider (41) is slidably inserted into the inner wall of the C-shaped slide rail (40). An adjustment plate (42) is welded to the top of the T-shaped slider (41), and a servo cylinder (43) is connected to one side of the T-shaped slider (41).

2. The continuous casting roll sleeve repair device according to claim 1, characterized in that, The outer wall of the sliding groove block (7) is welded with symmetrically distributed arc-shaped inner support blocks (8), and the outer walls of the arc-shaped inner support blocks (8) are all bonded with anti-slip rubber pads, and the outer wall of the anti-slip rubber pads is provided with anti-slip protrusions.

3. The continuous casting roll sleeve repair device according to claim 1, characterized in that, The bottom inner wall of the guide groove (14) has a through slag discharge channel (15) in an inclined direction, and the top of the fixed base plate (13) is welded with inclined slag guide plates on both sides of the outer wall of the guide groove (14). The length of the slag guide plates is adapted to the length of the fixed base plate (13).

4. The continuous casting roll sleeve repair device according to claim 1, characterized in that, The top two ends of the fixed base plate (13) are welded with L-shaped limiting brackets (21), and the bottom two ends of the rectangular top plate (19) are welded with limiting guide posts (22). The limiting guide posts (22) are located directly above the L-shaped limiting brackets (21), and the L-shaped limiting brackets (21) and the limiting guide posts (22) form an interlocking fit.

5. The continuous casting roll sleeve repair device according to claim 1, characterized in that, The bottom two ends of the first arc-shaped cover (27) are hinged and fixed with a second arc-shaped cover (29), and the inner walls of the two ends of the second arc-shaped cover (29) are equipped with equally spaced electric heating rods (30), and the inner walls of the two ends of the first arc-shaped cover (27) are equipped with K-type thermocouples (31).

6. The continuous casting roll sleeve repair device according to claim 1, characterized in that, The fixed base (36) and the rotating support platform (37) each have a positioning hole (38) through their outer walls, and a positioning pin (39) is inserted and fixed into the inner wall of the positioning hole (38).

7. The continuous casting roll sleeve repair device according to claim 1, characterized in that, A grinding block (44) is installed on one side of the top of the adjustment platform (42), and two sets of pattern-changing tools (45) are fixed on both sides of the grinding block (44) along the inclined direction. A welding gun (46) is installed on the other side of the top of the adjustment platform (42).

8. A continuous casting roll sleeve repair device according to claim 7, characterized in that, The axes of the rotating blocks (5) on the first fixed base (1) and the second fixed base (4) are both on the same straight line, and the welding gun (46) and the grinding block (44) are both on the same horizontal plane as the rotating blocks (5).

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