High-precision water quenching roller with good wear-resistant and corrosion-resistant effects for cold rolling continuous annealing line

Abstract

The high-precision water quenching roller comprises a roller body, a connecting cylinder and a transmission column, a rare earth element La or Ce and a transition metal Nb or V are added into the roller body, a nanoscale carbonitride dispersed phase is formed, the nanoscale carbonitride dispersed phase improves the hardness and intergranular corrosion resistance of a roller body matrix, and the service life of the roller body is prolonged. The roller body adopts centrifugal casting and laser surface remelting technologies, a gradient structure which is in transition from a high-carbon high-chromium outer layer to a low-carbon high-toughness inner layer is formed on the surface of the roller body, the contradiction between wear resistance and impact resistance of a traditional homogeneous material is solved, CrAlN or TiSiCN is adopted for preparing a nano composite coating on the roller surface of the roller body, and the wear resistance of the roller body is improved. Magnetron sputtering and ion implantation processes are utilized to enhance the binding force between the coating and the roller surface of the roller body, a clamping and fixing assembly is installed on the inner wall of the connecting cylinder, and a cavity is formed in the inner wall of the roller body.

Description

Technical Field

[0001] The present invention relates to the technical field of water-quenched rolls, and particularly to a high-precision water-quenched roll with good wear and corrosion resistance for a cold rolling continuous annealing line. Background Art

[0002] During the continuous annealing process of cold-rolled strip steel, it needs to go through processes such as high-temperature heating, rapid cooling (water quenching), and tempering. As a key component directly contacting the surface of the strip steel, the water-quenched roll needs to operate under extreme working conditions of high temperature (600 - 800 °C), high-pressure water flow, and high-speed friction. Its performance directly affects the surface quality of the strip steel (such as roughness, scale residue) and production stability. Ordinary material water-quenched rolls are prone to wear under high-speed friction, resulting in changes in the roll surface roughness, which in turn causes scratches or thickness fluctuations on the strip steel surface. In the water quenching process during annealing, the roll surface is easily exposed to acid- and alkali-containing cooling media, and ordinary materials are prone to corrosion. The existing water-quenched rolls have poor wear and corrosion resistance and a reduced service life.

[0003] The defects of the existing water-quenched rolls are as follows: 1. Patent document CN107937679A discloses a roll water quenching machine, "including a rotating shaft fixing the roll, and a set of spray cooling devices are mirror-symmetrically arranged on both sides of the rotating shaft. The spray cooling device includes a first water pipe and a second water pipe. The first water pipe is closer to the rotating shaft than the second water pipe. The first water pipe and the second water pipe are supported on a sliding plate by brackets, and the sliding plate is controlled to move left and right by a sprocket; a number of laser temperature measuring devices are also mirror-symmetrically arranged on both sides of the rotating shaft. At the same time, the present invention also discloses the water quenching and cooling method of the above water quenching machine. The present invention can automatically measure the temperature and adjust the water volume through the system according to the temperature change, so as to achieve the effect of controlling the temperature of the entire water quenching process", but the existing water-quenched rolls have poor wear and corrosion resistance and a reduced service life; 2. Patent document CN118996076A discloses a roll production water quenching machine based on continuous water quenching processing, "including a base, a processing table is fixedly installed on the top of the base, a roll body is arranged on the top of the processing table, a cutting processing machine is arranged on one side of the roll body, and a water collection mechanism and a filtering mechanism are arranged on one side of the cutting processing machine. It is to collect the water that drips after a short contact with the processed position on the roll surface, and send the water to the position of a plurality of sponge rolls through filtration treatment. After the sponge rolls are soaked in water, they continuously contact the processed position on the roll surface, so that the processed position on the roll surface is continuously water quenched, improving the water quenching effect of the roll. At the same time, the water after the roll is water quenched is also collected and cooled, and then the water is sent back to the spraying position through a water pump for multiple uses, avoiding the waste of surplus water", but the existing water-quenched rolls cannot quickly replace the transmission column, increasing the maintenance time; 3. Patent document CN113736964A discloses a roll changing device, "including a roll changing cart located on one side of the squeezing roll assembly. The roll changing cart is provided with a roll supporting platform for receiving the squeezing roll, and rollers are provided at the bottom of the roll changing cart. When performing roll changing operations, the roll changing cart moves to one side of the squeezing roll assembly. At this time, the roll supporting platform is aligned with the squeezing platform in the squeezing roll assembly, and the operator moves the squeezing roll to be replaced onto the roll supporting platform, and then the roll changing cart removes the squeezing roll. During the replacement process, manual hoisting is not required, improving the efficiency of replacement and transportation and reducing the safety risks during the replacement process. The present invention also provides a water quenching tank device including the above roll changing device. The two ends of the squeezing roll in the water quenching tank device are installed in bearing seats. A translation pulley is provided at the lower part of the bearing seat, which can facilitate the movement of the squeezing roll on the squeezing platform, further improving the replacement efficiency of the squeezing roll. The present invention also provides a water quenching tank device including the above roll changing device and has the above advantages", but the water source penetrating into the existing water quenching roll cannot be quickly discharged, reducing the working stability; 4. Patent document 4CN104846165A discloses a water quenching roll and its preparation method, "The water quenching roll includes a core shaft, a spoke wheel frame, and a cylinder body. A pair of the spoke wheel frames are respectively installed at both ends of the core shaft. The outer circle of the spoke wheel frame is fixedly connected to the cylinder body. Groove-shaped patterns are evenly arranged on the outer circumference of the cylinder body. The spoke wheel frame on the driving side is in interference fit with the core shaft, and the spoke wheel frame on the non-driving side is slidably connected to the core shaft. The cylinder body is made of wear-resistant stainless steel. The present invention is wear-resistant, not easily corroded, has a long service life, and has small radial runout, good balance performance, stable operation, no slippage of the strip steel, can effectively reduce the equipment failure rate, and protect the surface quality of the strip steel", but the inner wall of the existing water quenching roll cannot be quickly dried, reducing the service life of the roll body. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-precision water quenching roll with good wear resistance and corrosion resistance for cold rolling continuous annealing lines, so as to solve the technical problem of poor wear resistance and corrosion resistance and reduced service life of the water quenching roll proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A high-precision water quenching roll with good wear and corrosion resistance for cold rolling continuous annealing line, including a roll body, a connecting cylinder, and a transmission column. Rare earth elements La or Ce and transition metals Nb or V are added into the roll body to form a nano-scale carbonitride dispersion phase, which improves the hardness of the roll body matrix and the intergranular corrosion resistance. The roll body adopts centrifugal casting and laser surface remelting technologies to form a gradient structure that transitions from a high-carbon high-chromium outer layer to a low-carbon high-toughness inner layer on the roll body surface, solving the contradiction between the wear resistance and impact resistance of traditional homogeneous materials. The roll surface of the roll body is prepared with a nano-composite coating of CrAlN or TiSiCN, and magnetron sputtering and ion implantation processes are used to enhance the coating and strengthen the bonding force with the roll surface. A clamping component is installed on the inner wall of the connecting cylinder, and a cavity is provided on the inner wall of the roll body.

[0006] Preferably, the clamping component includes an eighth rod, an eighth sliding cylinder, an eighth connecting rod, a pressing plate, an eighth chuck, a clamping groove, an eighth spring, and an eighth motor. The eighth rod is located on the inner wall of the connecting cylinder, the eighth sliding cylinder is located on the outer wall of the eighth rod, an eighth connecting rod is installed on the outer wall of the eighth sliding cylinder, a pressing plate is installed on the outer wall of the eighth connecting rod, the eighth chuck is located on the outer wall of the pressing plate, the clamping groove is opened on the outer wall of the transmission column, the eighth spring is located on the outer wall of the pressing plate, and the outer wall of the eighth spring is connected to the inner wall of the connecting cylinder. The eighth motor is located on the outer wall of the eighth rod, a collecting wheel is installed at the output end of the eighth motor, a pulling rope is installed on the outer wall of the collecting wheel, and one end of the pulling rope is connected to the outer wall of the eighth connecting rod.

[0007] Preferably, the eighth chuck is inserted into the clamping groove, and the eighth sliding cylinder moves by the support of the eighth rod.

[0008] Preferably, a drainage component is installed through the inner wall of the roll body, and a drying component is installed on the inner wall of the roll body.

[0009] Preferably, the drainage component includes a ninth rod, a pulley, a slideway, an I-shaped frame, a magnetic strip, a plug, a ninth opening, and a ninth motor. The ninth rod is located on the inner wall of the roll body, the pulley is located on the outer wall of the ninth rod, the slideway is located on the outer wall of the pulley, the I-shaped frame is located on the outer wall of the slideway, the magnetic strip is located on the outer wall of the pulley, the ninth opening is opened on the outer wall of the roll body, the plug is located on the outer wall of the I-shaped frame, the ninth motor is located on the inner wall of the roll body, a gear is installed at the output end of the ninth motor, a ninth plate is installed on the outer wall of the I-shaped frame, a toothed rod is installed on the outer wall of the ninth plate, and the toothed rod meshes with the gear.

[0010] Preferably, the plug blocks the ninth opening, and the pulley moves by the support of the slideway.

[0011] Preferably, the drying assembly includes an eighth box, a blower, a through port, heating wires, a third plate, a third spring, and an air regulating plate. The eighth box is located on the inner wall of the roller body, the blower is located on the inner wall of the eighth box, the through port is opened on the outer wall of the eighth box, the heating wires are located on the inner wall of the eighth box, the third plate is located on the inner wall of the eighth box, the third spring is located on the inner wall of the third plate and also on the outer wall of the third plate. The air regulating plate is connected to the inner wall of the eighth box through a rotating pin and extends to the outer wall of the eighth box through the through port. One end of the third spring is connected to the outer wall of the air regulating plate. A pneumatic head is installed on the outer wall of the third plate, and a connecting plate is installed at the output end of the pneumatic head. The connecting plate is connected to the outer wall of the air regulating plate through a rotating pin.

[0012] Preferably, the blower is located on one side of the heating wires, and the air regulating plate is located on one side of the heating wires.

[0013] Preferably, a pressure touch head is installed on the inner wall of the slideway, and the pressure touch head is electrically connected to the drying assembly.

[0014] Preferably, the usage method of this water quenching roller includes the following steps: Step S1: Improve the wear and corrosion resistance of the roller body through the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating, realizing the function of improving the wear and corrosion resistance of the high-precision water quenching roller. Step S2: The eighth motor rotates to drive the collecting wheel to rotate. The collecting wheel rotates to drive the pull rope to move. The pull rope moves to drive the eighth connecting rod to move. The eighth connecting rod moves to drive the eighth sliding cylinder to move. The eighth sliding cylinder moves to make the eighth connecting rod drive the pressing plate to move. The pressing plate moves to drive the eighth spring to move. The eighth spring moves to make the pressing plate drive the eighth chuck to move out of the clamping groove. At this time, pull the transmission column and pull it out of the connecting cylinder, realizing the function of quickly replacing the transmission column of the high-precision water quenching roller to reduce the maintenance time. Step S3: The ninth motor rotates to drive the gear to rotate. The gear rotates to drive the rack to move. The rack moves to drive the ninth plate to move. The ninth plate moves to drive the I-shaped frame to move. The I-shaped frame moves to drive the slideway to move. The slideway moves to drive the pulley to rotate. The pulley rotates to make the I-shaped frame drive the plug to move. The plug moves to move out of the ninth port. At this time, the magnetic strip starts to contact the inner wall of the slideway to fix the plug. At this time, the ninth port opens to drain the water source inside the roller body, realizing the function of quickly draining the infiltrated water source inside the high-precision water quenching roller to improve the working stability. Step S4: After the pulley contacts the pressure touch head, the blower and the heating wires are turned on simultaneously. The blower starts to blow the wind through the through port to the surface of the heating wires to heat the wind. After the wind is heated, it is discharged to the inner wall of the roller body through the through port. At the same time, the pneumatic head starts to drive the connecting plate to move. The connecting plate moves to drive the rotating pin to rotate. The rotating pin rotates to drive the air regulating plate to move. The air regulating plate moves to drive the third spring to move. The third spring moves to adjust the wind direction of the air regulating plate, realizing the function of quickly drying the inner wall of the high-precision water quenching roller to improve the service life of the roller body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By installing a gradient structure on the surface of the roller body that transitions from a high-carbon high-chromium outer layer to a low-carbon high-toughness inner layer, the present invention solves the contradiction between the wear resistance and impact resistance of traditional homogeneous materials. The roller surface of the roller body is prepared with a CrAlN or TiSiCN nano-composite coating, and the magnetron sputtering and ion implantation processes are used to enhance the bonding force between the coating and the roller surface. A clamping component is installed on the inner wall of the connecting cylinder, and a cavity is provided on the inner wall of the roller body. The wear and corrosion resistance of the roller body is improved through the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating, realizing the function of improving the wear and corrosion resistance of the high-precision water-quenched roller; 2. By installing an eighth motor to drive the collection wheel to rotate, the collection wheel rotates to drive the pull rope to move, the pull rope moves to drive the eighth connecting rod to move, the eighth connecting rod moves to drive the eighth sliding cylinder to move, the eighth sliding cylinder moves to make the eighth connecting rod drive the pressing plate to move, the pressing plate moves to drive the eighth spring to move, and the eighth spring moves to make the pressing plate drive the eighth chuck to move out of the card slot. At this time, the transmission column is pulled out of the connecting cylinder, realizing the function of quickly replacing the transmission column of the high-precision water-quenched roller and reducing the maintenance time; 3. By installing a ninth motor to drive the gear to rotate, the gear rotates to drive the rack to move, the rack moves to drive the ninth plate to move, the ninth plate moves to drive the I-shaped frame to move, the I-shaped frame moves to drive the slideway to move, the slideway moves to drive the pulley to rotate, the pulley rotates to make the I-shaped frame drive the plug to move, the plug moves to move out of the ninth opening. At this time, the magnetic strip is activated to contact the inner wall of the slideway to fix the plug, and the ninth opening is opened to drain the water source inside the roller body, realizing the function of quickly draining the infiltrated water source inside the high-precision water-quenched roller and improving the working stability; 4. After the pulley contacts the pressure touch head, the fan and the heating wire are turned on at the same time. The fan starts to blow the wind through the through hole to the surface of the heating wire to heat the wind. After the wind is heated, it is discharged to the inner wall of the roller body through the through hole. At the same time, the pneumatic head starts to drive the connecting plate to move, the connecting plate moves to drive the rotating pin to rotate, the rotating pin rotates to drive the air deflector to move, the air deflector moves to drive the third spring to move, and the third spring moves to adjust the wind direction of the air deflector, realizing the function of quickly drying the inner wall of the high-precision water-quenched roller and improving the service life of the roller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a front structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the connecting cylinder of the present invention; Figure 4 It is a structural schematic diagram of the eighth chuck of the present invention; Figure 5 For the A structure schematic diagram of the present invention Figure 4 ; Figure 6 For the plug structure schematic diagram of the present invention Figure 7 For the B structure schematic diagram of the present invention Figure 6 ; Figure 8 For the schematic diagram of the No. 8 box structure of the present invention Figure 9 For the C structure schematic diagram of the present invention Figure 8 ;

[0017] In the figure: 1, roller body; 2, connecting cylinder; 3, transmission column; 4, No. 8 rod; 5, No. 8 spring; 6, pressing plate; 7, card slot; 8, No. 8 chuck; 9, No. 8 motor; 11, pulling rope; 12, No. 8 sliding cylinder; 13, No. 8 connecting rod; 14, No. 9 rod; 15, pulley; 16, magnetic strip; 17, slideway; 18, I-shaped frame; 19, No. 9 plate; 20, toothed rod; 21, No. 9 motor; 22, gear; 23, No. 8 box; 24, blower; 25, through hole; 26, heating wire; 27, air regulating plate; 29, No. 3 plate; 30, pneumatic head; 31, No. 3 spring; 34, pressure touch head; 39, plug Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. shall be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. Those of ordinary skill in the art can understand according to specific circumstances.

[0021] Example 1: Please refer to Figure 1 and Figure 2 , an example provided by the present invention: Rare earth elements La or Ce and transition metals Nb or V are added into the roller body 1 to form a nano-scale carbonitride dispersion phase. The nano-scale carbonitride dispersion phase improves the matrix hardness and intergranular corrosion resistance of the roller body 1. The roller body 1 adopts centrifugal casting and laser surface remelting technologies to form a gradient structure on the surface of the roller body 1 that transitions from a high-carbon and high-chromium outer layer to a low-carbon and high-toughness inner layer, solving the contradiction between the wear resistance and impact resistance of traditional homogeneous materials. The roller surface of the roller body 1 is prepared with a nano-composite coating of CrAlN or TiSiCN, and magnetron sputtering and ion implantation processes are used to enhance the bonding force between the coating and the roller surface of the roller body 1. A clamping component is installed on the inner wall of the connecting cylinder 2, and a cavity is provided on the inner wall of the roller body 1. The wear and corrosion resistance of the roller body 1 are improved through the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating, realizing the function of improving the wear and corrosion resistance of the high-precision water-quenched roller.

[0022] Example 2: Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 5, an embodiment provided by the present invention: The clamping component includes an eighth rod 4, an eighth sliding cylinder 12, an eighth connecting rod 13, a pressing plate 6, an eighth chuck 8, a clamping groove 7, an eighth spring 5, and an eighth motor 9. The eighth rod 4 is located on the inner wall of the connecting cylinder 2, the eighth sliding cylinder 12 is located on the outer wall of the eighth rod 4, the outer wall of the eighth sliding cylinder 12 is provided with the eighth connecting rod 13, the outer wall of the eighth connecting rod 13 is provided with the pressing plate 6, the eighth chuck 8 is located on the outer wall of the pressing plate 6, the clamping groove 7 is opened on the outer wall of the transmission column 3, the eighth spring 5 is located on the outer wall of the pressing plate 6, and the outer wall of the eighth spring 5 is connected to the inner wall of the connecting cylinder 2. The eighth motor 9 is located on the outer wall of the eighth rod 4, the output end of the eighth motor 9 is provided with a collecting wheel 10, the outer wall of the collecting wheel 10 is provided with a pulling rope 11, and one end of the pulling rope 11 is connected to the outer wall of the eighth connecting rod 13. The eighth chuck 8 is inserted into the clamping groove 7, the eighth sliding cylinder 12 moves through the support of the eighth rod 4, the eighth motor 9 rotates to drive the collecting wheel 10 to rotate, the collecting wheel 10 rotates to drive the pulling rope 11 to move, the pulling rope 11 moves to drive the eighth connecting rod 13 to move, the eighth connecting rod 13 moves to drive the eighth sliding cylinder 12 to move, the eighth sliding cylinder 12 moves to make the eighth connecting rod 13 drive the pressing plate 6 to move, the pressing plate 6 moves to drive the eighth spring 5 to move, and the eighth spring 5 moves to make the pressing plate 6 drive the eighth chuck 8 to move out of the clamping groove 7. At this time, the transmission column 3 is pulled out of the connecting cylinder 2, realizing the function of quickly replacing the transmission column 3 of the high-precision water quenching roller and reducing the maintenance time.

[0023] Embodiment 3: Please refer to Figure 2 , Figure 6 and Figure 7, an embodiment provided by the present invention: The drainage assembly includes a ninth rod 14, a pulley 15, a slideway 17, an I-shaped frame 18, a magnetic strip 16, a plug 39, a ninth opening, and a ninth motor 21. The ninth rod 14 is located on the inner wall of the roller body 1. The pulley 15 is located on the outer wall of the ninth rod 14. The slideway 17 is located on the outer wall of the pulley 15. The I-shaped frame 18 is located on the outer wall of the slideway 17. The magnetic strip 16 is located on the outer wall of the pulley 15. The ninth opening is opened on the outer wall of the roller body 1. The plug 39 is located on the outer wall of the I-shaped frame 18. The ninth motor 21 is located on the inner wall of the roller body 1. A gear 22 is installed at the output end of the ninth motor 21. A ninth plate 19 is installed on the outer wall of the I-shaped frame 18. A toothed rod 20 is installed on the outer wall of the ninth plate 19, and the toothed rod 20 meshes with the gear 22. The plug 39 blocks the ninth opening. The pulley 15 moves through the support of the slideway 17. The rotation of the ninth motor 21 drives the rotation of the gear 22. The rotation of the gear 22 drives the movement of the toothed rod 20. The movement of the toothed rod 20 drives the movement of the ninth plate 19. The movement of the ninth plate 19 drives the movement of the I-shaped frame 18. The movement of the I-shaped frame 18 drives the movement of the slideway 17. The movement of the slideway 17 drives the rotation of the pulley 15. The rotation of the pulley 15 causes the I-shaped frame 18 to drive the movement of the plug 39. The movement of the plug 39 causes it to move out of the ninth opening. At this time, the magnetic strip 16 is activated to contact the inner wall of the slideway 17 to fix the plug 39. At this time, the ninth opening is opened to drain the water source in the roller body 1, realizing the function of quickly draining the water source infiltrated in the high-precision water quenching roller and improving the working stability.

[0024] Embodiment 4: Please refer to Figure 2 , Figure 8 and Figure 9, an embodiment provided by the present invention: The drying assembly includes an eighth box 23, a fan 24, a through port 25, a heating wire 26, a third plate 29, a third spring 31, and an air regulating plate 27. The eighth box 23 is located on the inner wall of the roller body 1, the fan 24 is located on the inner wall of the eighth box 23, the through port 25 is opened on the outer wall of the eighth box 23, the heating wire 26 is located on the inner wall of the eighth box 23, the third plate 29 is located on the inner wall of the eighth box 23, the third spring 31 is located on the inner wall of the third plate 29, the third spring 31 is located on the outer wall of the third plate 29, the air regulating plate 27 is connected to the inner wall of the eighth box 23 through a rotating pin, and the air regulating plate 27 extends to the outer wall of the eighth box 23 through the through port 25, and one end of the third spring 31 is connected to the outer wall of the air regulating plate 27. An air cylinder head 30 is installed on the outer wall of the third plate 29, a connecting plate is installed at the output end of the air cylinder head 30, and the connecting plate is connected to the outer wall of the air regulating plate 27 through a rotating pin. The fan 24 is located on one side of the heating wire 26, the air regulating plate 27 is located on one side of the heating wire 26. A pressure touch head 34 is installed on the inner wall of the slideway 17, and the pressure touch head 34 is electrically connected to the drying assembly. After the pulley 15 contacts the pressure touch head 34, the fan 24 and the heating wire 26 are turned on simultaneously. The fan 24 starts to blow the wind through the through port 25 to the surface of the heating wire 26 to heat the wind, and the heated wind is discharged to the inner wall of the roller body 1 through the through port 25. At the same time, the air cylinder head 30 starts to drive the connecting plate to move, the connecting plate moves to drive the rotating pin to rotate, the rotating pin rotates to drive the air regulating plate 27 to move, the air regulating plate 27 moves to drive the third spring 31 to move, and the third spring 31 moves to adjust the wind direction of the air regulating plate 27, realizing the function of quickly drying the inner wall of the high-precision water-quenched roller and improving the service life of the roller body 1.

[0025] The usage method of the water-quenched roller includes the following steps: Step S1, improving the wear and corrosion resistance effect of the roller body 1 through the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating, realizing the function of improving the wear and corrosion resistance effect of the high-precision water-quenched roller; Step S2, the eighth motor 9 rotates to drive the collecting wheel 10 to rotate, the collecting wheel 10 rotates to drive the pulling rope 11 to move, the pulling rope 11 moves to drive the eighth connecting rod 13 to move, the eighth connecting rod 13 moves to drive the eighth sliding cylinder 12 to move, the eighth sliding cylinder 12 moves to make the eighth connecting rod 13 drive the pressing plate 6 to move, the pressing plate 6 moves to drive the eighth spring 5 to move, the eighth spring 5 moves to make the pressing plate 6 drive the eighth chuck 8 to move out of the card slot 7, and at this time, the driving column 3 is pulled out of the connecting cylinder 2, realizing the function of quickly replacing the driving column 3 of the high-precision water-quenched roller and reducing the maintenance time; Step S3: The rotation of the No. 9 motor 21 drives the rotation of the gear 22. The rotation of the gear 22 drives the movement of the rack 20. The movement of the rack 20 drives the movement of the No. 9 plate 19. The movement of the No. 9 plate 19 drives the movement of the I-shaped frame 18. The movement of the I-shaped frame 18 drives the movement of the slideway 17. The movement of the slideway 17 drives the rotation of the pulley 15. The rotation of the pulley 15 causes the I-shaped frame 18 to drive the movement of the plug 39. The movement of the plug 39 causes it to move out of the No. 9 opening. At this time, the magnetic strip 16 is activated to contact the inner wall of the slideway 17 to fix the plug 39. At this time, the No. 9 opening is opened to drain the water source in the roll body 1, realizing the function of quickly draining the water source infiltrated inside the high-precision water-quenched roll to improve the working stability; Step S4: After the pulley 15 contacts the pressure touch head 34, the blower 24 and the heating wire 26 are turned on simultaneously. The blower 24 is started to blow the wind through the through hole 25 to the surface of the heating wire 26 to heat the wind. After the wind is heated, it is discharged through the through hole 25 to the inner wall of the roll body 1. At the same time, the pneumatic head 30 is started to drive the movement of the connecting plate. The movement of the connecting plate drives the rotation of the rotating pin. The rotation of the rotating pin drives the movement of the air regulating plate 27. The movement of the air regulating plate 27 drives the movement of the No. 3 spring 31. The movement of the No. 3 spring 31 adjusts the wind direction of the air regulating plate 27, realizing the function of quickly drying the inner wall of the high-precision water-quenched roll to improve the service life of the roll body 1.

[0026] Working principle: By means of the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating, the wear and corrosion resistance of the roller body 1 are improved, realizing the function of improving the wear and corrosion resistance of the high-precision water-quenched roller. The rotation of the No. 8 motor 9 drives the rotation of the collecting wheel 10. The rotation of the collecting wheel 10 drives the movement of the pulling rope 11. The movement of the pulling rope 11 drives the movement of the No. 8 connecting rod 13. The movement of the No. 8 connecting rod 13 drives the movement of the No. 8 sliding cylinder 12. The movement of the No. 8 sliding cylinder 12 causes the No. 8 connecting rod 13 to drive the pressing plate 6 to move. The movement of the pressing plate 6 drives the movement of the No. 8 spring 5. The movement of the No. 8 spring 5 causes the pressing plate 6 to drive the No. 8 chuck 8 to move out of the card slot 7. At this time, the transmission column 3 is pulled to be pulled out of the connecting cylinder 2, realizing the function of quickly replacing the transmission column 3 of the high-precision water-quenched roller to reduce the maintenance time. The rotation of the No. 9 motor 21 drives the rotation of the gear 22. The rotation of the gear 22 drives the movement of the toothed rod 20. The movement of the toothed rod 20 drives the movement of the No. 9 plate 19. The movement of the No. 9 plate 19 drives the movement of the I-shaped frame 18. The movement of the I-shaped frame 18 drives the movement of the slideway 17. The movement of the slideway 17 drives the rotation of the pulley 15. The rotation of the pulley 15 causes the I-shaped frame 18 to drive the plug 39 to move. The movement of the plug 39 causes it to move out of the No. 9 port. At this time, the magnetic strip 16 is activated to contact the inner wall of the slideway 17 to fix the plug 39. At this time, the No. 9 port is opened to drain the water source inside the roller body 1, realizing the function of quickly draining the infiltrated water source inside the high-precision water-quenched roller to improve the working stability. After the pulley 15 contacts the pressure touch head 34, the fan 24 and the heating wire 26 are turned on at the same time. The fan 24 is started to blow the wind through the through hole 25 to the surface of the heating wire 26 to heat the wind. After the wind is heated, it is discharged through the through hole 25 to the inner wall of the roller body 1. At the same time, the pneumatic head 30 is started to drive the connecting plate to move. The movement of the connecting plate drives the rotation of the rotating pin. The rotation of the rotating pin drives the movement of the air regulating plate 27. The movement of the air regulating plate 27 drives the movement of the No. 3 spring 31. The movement of the No. 3 spring 31 adjusts the wind direction of the air regulating plate 27, realizing the function of quickly drying the inner wall of the high-precision water-quenched roller to improve the service life of the roller body 1.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line, comprising a roll body (1), a connecting cylinder (2), and a transmission column (3), characterized in that: Rare earth elements La or Ce and transition metals Nb or V are added into the roll body (1) to form a nano-scale carbonitride dispersion phase, which improves the matrix hardness and intergranular corrosion resistance of the roll body (1). The roll body (1) adopts centrifugal casting and laser surface remelting technologies to form a gradient structure on the surface of the roll body (1) that transitions from a high-carbon high-chromium outer layer to a low-carbon high-toughness inner layer, solving the contradiction between wear resistance and impact resistance of traditional homogeneous materials. The roll surface of the roll body (1) is prepared with a nano-composite coating of CrAlN or TiSiCN, and magnetron sputtering and ion implantation processes are used to enhance the bonding force between the coating and the roll surface of the roll body (1). The inner wall of the connecting cylinder (2) is equipped with a clamping component, and a cavity is provided in the inner wall of the roll body (1).

2. The high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 1, characterized in that: The clamping component includes an eighth rod (4), an eighth sliding cylinder (12), an eighth connecting rod (13), a pressing plate (6), an eighth chuck (8), a clamping groove (7), an eighth spring (5), and an eighth motor (9). The eighth rod (4) is located on the inner wall of the connecting cylinder (2), the eighth sliding cylinder (12) is located on the outer wall of the eighth rod (4), the outer wall of the eighth sliding cylinder (12) is equipped with an eighth connecting rod (13), the outer wall of the eighth connecting rod (13) is equipped with a pressing plate (6), the eighth chuck (8) is located on the outer wall of the pressing plate (6), the clamping groove (7) is opened on the outer wall of the transmission column (3), the eighth spring (5) is located on the outer wall of the pressing plate (6), and the outer wall of the eighth spring (5) is connected to the inner wall of the connecting cylinder (2). The eighth motor (9) is located on the outer wall of the eighth rod (4), the output end of the eighth motor (9) is equipped with a collecting wheel (10), the outer wall of the collecting wheel (10) is equipped with a pull rope (11), and one end of the pull rope (11) is connected to the outer wall of the eighth connecting rod (13).

3. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 2, characterized in that: The eighth chuck (8) is inserted into the clamping groove (7), and the eighth sliding cylinder (12) moves by the support of the eighth rod (4).

4. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling and continuous annealing line according to claim 1, characterized in that: A drainage component is installed through the inner wall of the roll body (1), and a drying component is installed on the inner wall of the roll body (1).

5. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 4, characterized in that: The drainage component includes a ninth rod (14), a pulley (15), a slideway (17), an I-shaped frame (18), a magnetic strip (16), a plug (39), a ninth opening, and a ninth motor (21). The ninth rod (14) is located on the inner wall of the roll body (1), the pulley (15) is located on the outer wall of the ninth rod (14), the slideway (17) is located on the outer wall of the pulley (15), the I-shaped frame (18) is located on the outer wall of the slideway (17), the magnetic strip (16) is located on the outer wall of the pulley (15), the ninth opening is opened on the outer wall of the roll body (1), the plug (39) is located on the outer wall of the I-shaped frame (18), the ninth motor (21) is located on the inner wall of the roll body (1), the output end of the ninth motor (21) is equipped with a gear (22), the outer wall of the I-shaped frame (18) is equipped with a ninth plate (19), the outer wall of the ninth plate (19) is equipped with a toothed rod (20), and the toothed rod (20) meshes with the gear (22).

6. The high-precision water quenching roll with good wear and corrosion resistance for cold rolling continuous annealing line according to claim 5, characterized in that: The plug (39) blocks the ninth opening, and the pulley (15) moves by the support of the slideway (17).

7. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 4, characterized in that: The drying component includes an eighth box (23), a blower (24), a through port (25), a heating wire (26), a third plate (29), a third spring (31), and an air regulating plate (27). The eighth box (23) is located on the inner wall of the roller body (1). The blower (24) is located on the inner wall of the eighth box (23). The through port (25) is opened on the outer wall of the eighth box (23). The heating wire (26) is located on the inner wall of the eighth box (23). The third plate (29) is located on the inner wall of the eighth box (23). The third spring (31) is located on the inner wall of the third plate (29). The third spring (31) is located on the outer wall of the third plate (29). The air regulating plate (27) is connected to the inner wall of the eighth box (23) through a rotating pin, and the air regulating plate (27) extends to the outer wall of the eighth box (23) through the through port (25). One end of the third spring (31) is connected to the outer wall of the air regulating plate (27). A pneumatic head (30) is installed on the outer wall of the third plate (29). A connecting plate is installed at the output end of the pneumatic head (30). The connecting plate is connected to the outer wall of the air regulating plate (27) through a rotating pin.

8. A high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 7, characterized in that: The blower (24) is located on one side of the heating wire (26). The air regulating plate (27) is located on one side of the heating wire (26).

9. The high-precision water quenching roll with good wear and corrosion resistance for a cold rolling continuous annealing line according to claim 5, characterized in that: A pressure touch head (34) is installed on the inner wall of the slideway (17), and the pressure touch head (34) is electrically connected to the drying component.

10. A method for using a high-precision water-quenching roll with good wear and corrosion resistance for a cold rolling and continuous annealing line, applicable to the high-precision water-quenching roll with good wear and corrosion resistance for a cold rolling and continuous annealing line described in any one of claims 1-9, characterized in that, The usage method of this water quenching roller includes the following steps: Step S1: Improve the wear and corrosion resistance of the roller body (1) through the nano-scale carbonitride dispersion phase, gradient structure, and nano-composite coating; Step S2: The eighth motor (9) rotates to drive the collection wheel (10) to rotate. The collection wheel (10) rotates to drive the pull rope (11) to move. The pull rope (11) moves to drive the eighth connecting rod (13) to move. The eighth connecting rod (13) moves to drive the eighth sliding cylinder (12) to move. The movement of the eighth sliding cylinder (12) causes the eighth connecting rod (13) to drive the pressing plate (6) to move. The pressing plate (6) moves to drive the eighth spring (5) to move. The movement of the eighth spring (5) causes the pressing plate (6) to drive the eighth chuck (8) to move out of the card slot (7). At this time, pull the transmission column (3) to pull it out of the connecting cylinder (2); Step S3: The ninth motor (21) rotates to drive the gear (22) to rotate. The gear (22) rotates to drive the rack (20) to move. The rack (20) moves to drive the ninth plate (19) to move. The ninth plate (19) moves to drive the I-shaped frame (18) to move. The I-shaped frame (18) moves to drive the slideway (17) to move. The slideway (17) moves to drive the pulley (15) to rotate. The rotation of the pulley (15) causes the I-shaped frame (18) to drive the plug (39) to move. The movement of the plug (39) causes it to move out of the ninth port. At this time, the magnetic strip (16) is activated to contact the inner wall of the slideway (17) to fix the plug (39). At this time, the ninth port is opened to drain the water source in the roller body (1); Step S4: After the pulley (15) contacts the pressure contact head (34), the fan (24) and the heating wire (26) are turned on simultaneously. The fan (24) starts to blow the wind through the through-hole (25) onto the surface of the heating wire (26) to heat the wind. After the wind is heated, it is discharged through the through-hole (25) to the inner wall of the roller body (1). At the same time, the pneumatic head (30) starts to drive the connecting plate to move. The movement of the connecting plate drives the rotation pin to rotate. The rotation of the rotation pin drives the air regulating plate (27) to move. The movement of the air regulating plate (27) drives the movement of the third spring (31). The movement of the third spring (31) adjusts the wind direction of the air regulating plate (27).

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