Temper mill based on hydraulic AGC and six-roller reversible structure and control method of temper mill

Abstract

The invention discloses a temper mill based on hydraulic AGC and a six-roller reversible structure and a control method of the temper mill. The temper mill comprises a transversely-arranged supporting base plate, and a detection component, a dry ice rust removal component, an acid pickling rust removal component, a cleaning component and a six-roller reversible temper mill body are sequentially distributed on the base plate; a steel belt sequentially passes through the detection component, the dry ice rust removal component, the acid pickling rust removal component, the cleaning component and the six-roller reversible temper mill. The detection part is used for detecting whether rusty spots exist on the surface of the passing steel strip; the dry ice rust removal component is used for spraying dry ice particles to rust spots on the surface of the steel strip, dry ice sublimates into gas in rust layer gaps of the rust spots, the volume of the dry ice expands to generate local pressure, the combination face of a rust layer and a base body is opened, and rust removal operation on the rust spots on the surface of the steel strip is achieved; the steel belt rust removal device is used for conducting rust removal operation on a steel belt under the condition that the environment is not polluted, and therefore the problem of environment pollution is solved.

Description

Technical Field

[0001] This invention relates to the field of leveling machine technology, specifically to a leveling machine and its control method based on hydraulic AGC and a six-roll reversible structure. Background Technology

[0002] Automatic Gain Control (AGC) hydraulic cylinders are the core hydraulic actuators in AGC hydraulic systems. The main function of a hydraulic AGC system is to automatically control the pressing position and plate thickness. Due to its fast response and high control precision, this system is widely used in plate rolling production lines.

[0003] The six-roll reversible structure and six-roll reversible leveling mill are specifically designed for leveling processes. They feature high surface precision on the work rolls (e.g., controllable roughness), strong support roll rigidity, and, combined with intermediate roll axial movement technology (such as in HC mills), precise control of strip shape. Equipped with dedicated front and rear tension devices (uncoiler, coiler), the strip achieves leveling deformation (eliminating yield plateaus and improving surface finish) through the synergy of tension and small reduction. Primarily used for leveling processes after cold rolling, unlike ordinary rolling mills, it features a smaller reduction, with the core objective of optimizing strip shape, surface quality, and mechanical properties (e.g., eliminating slip lines and adjusting hardness).

[0004] To ensure the surface quality of cold-rolled strip steel, the iron oxide scale on the surface of the incoming hot-rolled strip steel must be removed before cold rolling. Currently, the main method for removing iron oxide scale from the surface of hot-rolled strip steel by steel companies and steel processing enterprises is pickling with sulfuric acid or hydrochloric acid. The acid dissolves the iron oxide scale, thus achieving rust removal. The biggest drawback of existing conventional pickling technology is that the acid solution easily causes environmental pollution. Therefore, it is necessary to develop a rust removal and leveling machine that can achieve rust removal while preventing environmental pollution to solve the environmental pollution problem. Summary of the Invention

[0005] The main objective of this invention is to provide a leveling machine and its control method based on hydraulic AGC and a six-roll reversible structure, aiming to solve the technical problem of environmental pollution caused by existing pickling technologies.

[0006] To achieve the above objectives, the present invention proposes a leveling machine based on hydraulic AGC and a six-roll reversible structure, comprising a horizontally arranged support base plate, on which a detection component, a dry ice rust removal component, an acid pickling rust removal component, a cleaning component, and a six-roll reversible leveling machine are sequentially distributed; a steel strip passes sequentially through the detection component, the dry ice rust removal component, the acid pickling rust removal component, the cleaning component, and the six-roll reversible leveling machine;

[0007] The detection component is used to detect whether there are rust spots on the surface of the steel strip.

[0008] The dry ice rust removal component is used to spray dry ice particles onto the rust spots on the steel strip surface. The dry ice sublimates into gas in the rust layer gaps of the rust spots, expands in volume to generate local pressure, and opens up the bonding surface between the rust layer and the substrate, thereby realizing the rust removal operation on the surface of the steel strip.

[0009] The pickling and rust removal component is used to scrub the surface of the steel strip in citric acid solution after dry ice rust removal to further remove rust residue.

[0010] The cleaning component is used to spray and clean the pickled steel strip to remove residual citric acid solution adhering to the surface of the steel strip.

[0011] The six-roll reversible leveling machine is used for leveling cleaned steel strips.

[0012] Preferably, the detection component includes a first box body arranged horizontally with its opening facing upwards, a second box body arranged horizontally above the first box body with its opening facing downwards, first support plates symmetrically arranged vertically on both sides of the opening along the length direction of the upper side of the first box body, the opening of the second box body near the side of the first box body being hinged to any one of the first support plates, the length direction of the first box body being in the same direction as the length direction of the second box body, and the length of the first box body being the same as the length of the second box body, and a plurality of first multispectral confocal sensors for detecting towards the second box body being arranged in an array at the bottom of the inner wall of the first box body, and a plurality of second multispectral confocal sensors for detecting towards the first box body being arranged in an array at the bottom of the inner wall of the second box body;

[0013] The first multispectral confocal sensor, distributed in an array, is positioned along the length of the first housing as the X-axis in the coordinate system, and along the width of the first housing as the Y-axis in the coordinate system; the second multispectral confocal sensor, distributed in an array, is positioned along the length of the first housing as the X-axis in the coordinate system, and along the width of the first housing as the Y-axis in the coordinate system.

[0014] The detection component further includes a coordinate system module, which is used to acquire and store the coordinate points of each first multispectral confocal sensor and to acquire and store the coordinate points of each second multispectral confocal sensor.

[0015] Preferably, the dry ice rust removal component includes a first rust removal component and a second rust removal component, wherein the first rust removal component is used to remove rust from the lower surface of the steel strip, and the second rust removal component is used to remove rust from the upper surface of the steel strip;

[0016] The first rust removal component includes two first crossbars arranged symmetrically in the transverse direction. The extension direction of the first crossbars is the same as the length direction of the first box. Each first crossbar has a first receiving cavity. Each first receiving cavity is provided with a first screw slide. The sliding direction of the slider of the first screw slide is the same as the length direction of the first crossbar. The sliding distance of the slider of the first screw slide is greater than the length of the first box. The two first crossbars are respectively connected to the first receiving cavity by forming a first through groove on the side that is close to each other. The extension direction of the first through groove is the same as the extension direction of the first crossbar. A first X-axis slide is arranged transversely between the two first crossbars. A first slider is slidably arranged on the first X-axis slide. The two ends of the first X-axis slide extend into the adjacent first crossbars respectively and are connected to the slider of the first screw slide in the first crossbar.

[0017] The first rust removal component further includes two second horizontal bars arranged symmetrically in the transverse direction. The extension direction of the two second horizontal bars is perpendicular to the extension direction of the first horizontal bar. The two first horizontal bars are located between the two second horizontal bars and are connected to the two first horizontal bars to form a rectangular frame. A second receiving cavity is formed in each second horizontal bar. A second lead screw slide is provided in each second receiving cavity. The sliding direction of the slider of the second lead screw slide is in the same direction as the length direction of the second horizontal bar. The sliding distance of the slider of the second lead screw slide is greater than the width of the first box. A second through groove communicating with the second receiving cavity is formed on the side of the two second horizontal bars that are close to each other. The extension direction of the second through groove is in the same direction as the extension direction of the second horizontal bar. A first Y-axis slide is arranged transversely between the two second horizontal bars. A second slider is slidably arranged on the first Y-axis slide. The two ends of the first Y-axis slide extend into the adjacent second horizontal bars respectively and are connected to the slider of the second lead screw slide in the second horizontal bar.

[0018] The extension direction of the first X-axis slide bar is perpendicular to the extension direction of the first Y-axis slide bar; the first X-axis slide bar is located below the first Y-axis slide bar, and the second slider is connected to the first slider;

[0019] The first rust removal assembly also includes a first heat-insulating and pressure-maintaining storage tank disposed on a support base plate. The first heat-insulating and pressure-maintaining storage tank contains dry ice particles of various sizes. A first solenoid valve is connected to the bottom of the first heat-insulating and pressure-maintaining storage tank. A first discharge pipe is connected to the end of the first solenoid valve away from the first heat-insulating and pressure-maintaining storage tank. A first high-pressure nozzle is provided on the second slider, spraying towards the side away from the first slider. The end of the first discharge pipe away from the first solenoid valve is connected to the first high-pressure nozzle. The first rust removal assembly also includes a first air pump for injecting air into the first heat-insulating and pressure-maintaining storage tank. A first pressure sensor for detecting the pressure inside the tank is provided on the first heat-insulating and pressure-maintaining storage tank. A first electronic pressure relief valve is also provided on the first heat-insulating and pressure-maintaining storage tank.

[0020] The direction in which the first lead screw slide moves the first X-axis slide is the X-axis in the coordinate system. The first receiving cavity is provided with a first X-axis number axis detection component for detecting the position of the slider of the first lead screw slide. The distance between the two number axes of the X-axis is the same as the distance between the multiple first multispectral confocal sensors arranged in a row.

[0021] The direction in which the second lead screw slide moves the first Y-axis slide is the Y-axis in the coordinate system. The second receiving cavity is provided with a first Y-axis multi-axis detection component for detecting the position of the slider of the second lead screw slide. The distance between the two Y-axis multi-axis is the same as the distance between the multiple first multispectral confocal sensors arranged in a row.

[0022] Preferably, the second rust removal component includes two third crossbars arranged symmetrically in the transverse direction. The two third crossbars are arranged one-to-one above the first crossbar and are parallel to the first crossbar. A third support plate is distributed on the side of each of the two first crossbars near the third crossbar. The extension direction of the third support plate is the same as the extension direction of the first crossbar. Any one of the third crossbars is hinged to the third support plate below it.

[0023] Each of the third crossbars has a third receiving cavity, and each of the third receiving cavities is provided with a third lead screw slide. The sliding direction of the slider of the third lead screw slide is in the same direction as the length direction of the third crossbar. The sliding distance of the slider of the third lead screw slide is greater than the length of the first box. A third through groove communicating with the third receiving cavity is formed through the side of the two third crossbars that are close to each other. The extension direction of the third through groove is in the same direction as the extension direction of the third crossbar. A second X-axis slide is provided transversely between the two third crossbars. A third slider is slidably mounted on the second X-axis slide. The two ends of the second X-axis slide extend into the adjacent third crossbars respectively and are connected to the slider of the third lead screw slide in the third crossbar.

[0024] The second rust removal assembly also includes two fourth horizontal bars arranged symmetrically in the transverse direction. The extension direction of the two fourth horizontal bars is perpendicular to the extension direction of the third horizontal bar. The two third horizontal bars are located between the two fourth horizontal bars and are connected to the two third horizontal bars to form a rectangular frame. Each fourth horizontal bar has a fourth receiving cavity, and each fourth receiving cavity is provided with a fourth lead screw slide. The sliding direction of the slider of the fourth lead screw slide is in the same direction as the length direction of the fourth horizontal bar. The sliding distance of the slider of the fourth lead screw slide is greater than the width of the first box. The two fourth horizontal bars are respectively connected by a fourth through groove through their adjacent sides, which is connected to the fourth receiving cavity. The extension direction of the fourth through groove is in the same direction as the extension direction of the fourth horizontal bar. A second Y-axis slide is arranged transversely between the two fourth horizontal bars. A fourth slider is slidably mounted on the second Y-axis slide. The two ends of the second Y-axis slide extend into the adjacent fourth horizontal bars and are connected to the slider of the fourth lead screw slide in the fourth horizontal bar.

[0025] The extension direction of the second X-axis slide bar is perpendicular to the extension direction of the second Y-axis slide bar; the second X-axis slide bar is located below the second Y-axis slide bar, and the fourth slider is connected to the third slider;

[0026] The second rust removal assembly also includes a second heat-insulating and pressure-holding storage tank disposed on a support base plate. The second heat-insulating and pressure-holding storage tank contains dry ice particles of various sizes. A second solenoid valve is connected to the bottom of the second heat-insulating and pressure-holding storage tank. A second discharge pipe is connected to the end of the second solenoid valve away from the second heat-insulating and pressure-holding storage tank. The third slider is provided with a second high-pressure nozzle that sprays towards the side away from the fourth slider. The end of the second discharge pipe away from the second solenoid valve is connected to the second high-pressure nozzle. The second rust removal assembly also includes a second air pump for injecting air into the second heat-insulating and pressure-holding storage tank. A second pressure sensor for detecting the pressure inside the tank is provided on the second heat-insulating and pressure-holding storage tank. A second electronic pressure relief valve is also provided on the second heat-insulating and pressure-holding storage tank.

[0027] The direction in which the third lead screw slide moves the second X-axis slide is the X-axis in the coordinate system. The third receiving cavity is provided with a second X-axis number axis detection component for detecting the position of the slider of the third lead screw slide. The distance between the two number axes of the X-axis is the same as the distance between the multiple second multispectral confocal sensors arranged in a row.

[0028] The direction in which the fourth lead screw slide moves the second Y-axis slide is the Y-axis in the coordinate system. The fourth receiving cavity is provided with a second Y-axis multi-axis detection component for detecting the position of the slider of the fourth lead screw slide. The distance between the two Y-axis multi-axis is the same as the distance between the multiple second multispectral confocal sensors arranged in a row.

[0029] The length of the third horizontal bar is the same as the length of the first horizontal bar, and the length of the fourth horizontal bar is the same as the length of the second horizontal bar. The fourth horizontal bar is located directly above the second horizontal bar.

[0030] Preferably, the first X-axis multi-axis detection assembly includes a first mounting block disposed on the side of the slider of the first lead screw slide near the wall of the first receiving cavity. A first receiving groove is recessed on the side of the first mounting block opposite to the slider of the first lead screw slide. A first electrical connector is slidably disposed within the first receiving groove. The side of the first electrical connector near the bottom of the first receiving groove is connected to the bottom of the first receiving groove via at least one first spring. The first spring is used to drive the first electrical connector to extend out of the first receiving groove towards the side opposite to the bottom of the first receiving groove. A plurality of first contact pieces for contacting the first electrical connector are evenly spaced on the inner wall of the first receiving cavity. The distribution direction of the plurality of first contact pieces is the same as the moving direction of the slider of the first lead screw slide. The distance between two first contact pieces is equal to the distance between two first multispectral confocal sensors. Each first contact piece records X-axis coordinate data.

[0031] The first Y-axis multi-axis detection assembly includes a second mounting block disposed on the side of the slider of the second lead screw slide near the wall of the second receiving cavity. The side of the second mounting block opposite to the slider of the second lead screw slide has a recessed second receiving groove. A second electrical connector is slidably disposed in the second receiving groove. The side of the second electrical connector near the bottom of the second receiving groove is connected to the bottom of the second receiving groove by at least one second spring. The second spring is used to drive the second electrical connector to extend out of the second receiving groove towards the side opposite to the bottom of the second receiving groove. A plurality of second contact pieces for contacting the first electrical connector are evenly spaced on the inner wall of the second receiving cavity. The distribution direction of the plurality of second contact pieces is the same as the movement direction of the slider of the second lead screw slide. The distance between two second contact pieces is equal to the distance between two second multispectral confocal sensors. Each second contact piece records a Y-axis coordinate data.

[0032] Preferably, the second X-axis multi-axis detection assembly includes a third mounting block disposed on the side of the slider of the third lead screw slide near the wall of the third receiving cavity. A third receiving groove is recessed on the side of the third mounting block opposite to the slider of the third lead screw slide. A third electrical connector is slidably disposed within the third receiving groove. The side of the third electrical connector near the bottom of the third receiving groove is connected to the bottom of the third receiving groove via at least one third spring. The third spring drives the third electrical connector to extend out of the third receiving groove towards the side opposite to the bottom of the third receiving groove. A plurality of third contact pieces for contacting the third electrical connector are evenly spaced on the inner wall of the third receiving cavity. The distribution direction of the plurality of third contact pieces is the same as the moving direction of the slider of the third lead screw slide. The distance between two third contact pieces is equal to the distance between two second multispectral confocal sensors. Each third contact piece records X-axis coordinate data.

[0033] The first Y-axis multi-axis detection assembly includes a fourth mounting block disposed on the side of the slider of the fourth lead screw slide near the wall of the fourth receiving cavity. A fourth receiving groove is recessed on the side of the fourth mounting block opposite to the slider of the fourth lead screw slide. A fourth electrical connector is slidably disposed within the fourth receiving groove. The side of the fourth electrical connector near the bottom of the fourth receiving groove is connected to the bottom of the fourth receiving groove via at least one fourth spring. The fourth spring drives the fourth electrical connector to extend out of the fourth receiving groove towards the side opposite to the bottom of the fourth receiving groove. Multiple fourth contact pieces for contacting the third electrical connector are evenly spaced on the inner wall of the fourth receiving cavity. The distribution direction of the multiple fourth contact pieces is the same as the movement direction of the slider of the fourth lead screw slide. The distance between two fourth contact pieces is equal to the distance between two second multispectral confocal sensors. Each fourth contact piece records a Y-axis coordinate data.

[0034] Preferably, the pickling and rust removal component includes a third box arranged horizontally with its opening facing upwards, the third box containing a citric acid solution, a fourth box arranged horizontally above the third box with its opening facing downwards, the fourth box having its length edge hinged to the length edge of the third box on the side closest to the third box, the length direction of the third box being the same as the length direction of the fourth box, the length of the third box being the same as the length of the fourth box, the length direction of the third box being the same as the length direction of the first box, a first nylon fiber layer being provided at the bottom of the inner wall of the third box, a first pressure plate being provided on the bottom wall of the fourth box, a second nylon fiber layer being provided on the side of the first pressure plate away from the bottom wall of the fourth box, the second nylon fiber layer being located above the first nylon fiber layer, a first hydraulic cylinder being provided on the side of the fourth box away from the third box for moving the first pressure plate toward or away from the side of the first nylon fiber layer, a third pressure sensor being provided on the side of the first pressure plate near the second nylon fiber layer, and nano-diamond abrasive being attached to the fibers of the first nylon fiber layer and the fibers of the first nylon fiber layer respectively;

[0035] The third box body has two recessed openings in the width direction to form a first material groove for the steel strip to pass through, and the fourth box body has two recessed openings in the width direction to form a second material groove for the steel strip to pass through. The first material groove and the second material groove cooperate to form a rectangular frame for the steel strip to pass through.

[0036] The bottom of the third box has a fifth receiving cavity, and a heating tube is provided in the fifth receiving cavity. The bottom of the inner wall of the third box has a plurality of heat-conducting rods that extend into the fifth receiving cavity.

[0037] Preferably, the cleaning component includes a fifth box arranged horizontally with its opening facing upwards, and a sixth box arranged horizontally above the fifth box with its opening facing downwards. The edge of the sixth box near the fifth box is hinged to the edge of the fifth box along its length direction. The length direction of the fifth box and the sixth box are in the same direction. The length of the fifth box and the sixth box are the same. The length direction of the fifth box is in the same direction as the length direction of the first box. A third nylon fiber layer is provided at the bottom of the inner wall of the fifth box. A second pressure plate is provided on the bottom wall of the sixth box. A fourth nylon fiber layer is provided on the side of the second pressure plate away from the bottom wall of the sixth box. The fourth nylon fiber layer is located above the third nylon fiber layer. A second hydraulic cylinder is provided on the side of the sixth box away from the fifth box for moving the second pressure plate toward or away from the third nylon fiber layer. A fourth pressure sensor is provided on the side of the second pressure plate near the fourth nylon fiber layer.

[0038] The fifth box has two recessed openings in the width direction to form a third material groove for the steel strip to pass through, and the sixth box has two recessed openings in the width direction to form a fourth material groove for the steel strip to pass through. The third material groove and the fourth material groove cooperate to form a rectangular frame for the steel strip to pass through.

[0039] The inner wall of the fifth box is provided with multiple third high-pressure nozzles that spray water toward the sixth box, and the inner wall of the sixth box is provided with multiple fourth high-pressure nozzles that spray water toward the fifth box. The third and fourth high-pressure nozzles are used to spray clean water, and the bottom of the fifth box is provided with a drain pipe.

[0040] Preferably, the dry ice particles have at least two particle sizes: 50 nm and 200 μm; the horizontal height of the upper edge of the first box is higher than the horizontal height of the upper surface of the second crossbar, and the horizontal height of the bottom of the first material groove is higher than the horizontal height of the upper surface of the second crossbar.

[0041] This invention also proposes a control method for a hydraulic AGC-based six-roll reversible structure leveling machine, employing any of the aforementioned hydraulic AGC-based six-roll reversible structure leveling machines. The control method for the hydraulic AGC-based six-roll reversible structure leveling machine includes the following steps:

[0042] S1. Rust spot detection and coordinate positioning on steel strip surface

[0043] As the steel strip passes through the first box, the first multispectral confocal sensor array and the second multispectral confocal sensor array simultaneously scan the upper and lower surfaces of the steel strip to identify the location of rust spots.

[0044] S2. Dry ice targeted rust removal control

[0045] When the steel strip passes through the dry ice rust removal component, the lower surface is rusted: control the first and second lead screw slides to drive the first high-pressure nozzle to move to the coordinate position of the rust spot; open the first solenoid valve to spray 50nm and 200μm graded dry ice particles at a pressure of 0.5-1MPa, and the spraying time is adaptively calculated according to the area of ​​the rust spot.

[0046] Rust removal on the upper surface: Synchronously control the third and fourth lead screw slides as described in claim 4 to drive the second high-pressure nozzle to move to the corresponding coordinate; open the second solenoid valve to increase the flow rate on the upper surface by 20% to compensate for the influence of gravity;

[0047] S3. Citric acid scrubbing control

[0048] Turn on the heating element to raise the temperature of the citric acid solution to 45±1℃;

[0049] The first hydraulic cylinder is driven to press down, so that the second nylon fiber layer comes into contact with the steel strip, and the third pressure sensor provides real-time feedback of the pressure value;

[0050] A steel belt passes through the scrubbing zone at a speed of 5 m / min, and the surface is scrubbed by a layer of nano-diamond fiber.

[0051] S4. High-pressure cleaning and residue control

[0052] Start the third and fourth high-pressure nozzles to spray clean water at a pressure of 20MPa;

[0053] The second hydraulic cylinder drives the fourth nylon fiber layer to press the steel belt, and the fourth pressure sensor maintains the pressure at 3-8 N / cm. 2 ;

[0054] Wastewater is discharged into the reverse osmosis system via a drain pipe;

[0055] S5. The cleaned steel strip is fed into a six-roll reversible leveler to perform the leveling operation on the steel strip. At the same time, the six-roll reversible leveler provides power for the movement of the steel strip.

[0056] In this invention, the technical solution innovatively integrates four major modules: dry ice rust removal, citric acid scrubbing, high-pressure cleaning, and a six-roller reversible leveling machine, achieving continuous production throughout the entire process. The dry ice rust removal component utilizes the sublimation expansion principle of dry ice to physically peel off the oxide scale, reducing the amount of strong acid used by over 90%. Citric acid scrubbing further removes residual rust (pH=4, 100% biodegradability), avoiding the risk of heavy metal pollution to soil associated with traditional hydrochloric acid washing. Finally, a six-roller reversible leveling machine (hydraulic AGC control) precisely controls the strip shape (flatness ±1μm) with a small reduction of 0.5-1%, eliminating slip lines and improving hardness uniformity to achieve flatness of the steel strip. By removing most of the rust with dry ice and removing residual rust with citric acid, rust removal of the steel strip can be performed without polluting the environment, thus solving the problem of environmental pollution. Attached Figure Description

[0057] 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 the structures shown in these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0059] Figure 2 This is a schematic diagram of the structure of the second housing of the detection component of the present invention when it is opened;

[0060] Figure 3 This is a schematic diagram of the second housing of the detection component of the present invention when closed;

[0061] Figure 4 This is a schematic diagram of the structure of the second rust removal component of the dry ice rust removal part of the present invention when it is open;

[0062] Figure 5 This is a schematic diagram of the second rust removal component of the dry ice rust removal part of the present invention when closed;

[0063] Figure 6 This is a schematic diagram of the first slider, second slider, and first high-pressure nozzle structure of the present invention;

[0064] Figure 7 This is a schematic diagram of a partial cross-sectional structure inside the first receiving cavity of the present invention;

[0065] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the E region in the diagram;

[0066] Figure 9 This is a schematic diagram of a partial cross-sectional structure inside the second receiving cavity of the present invention;

[0067] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the F region in the diagram;

[0068] Figure 11 This is a schematic diagram of the third slider, fourth slider, and second high-pressure nozzle structure of the present invention;

[0069] Figure 12 This is a schematic diagram of a partial cross-sectional structure inside the third receiving cavity of the present invention;

[0070] Figure 13 For the present invention Figure 12 A magnified schematic diagram of the G region in the diagram;

[0071] Figure 14 This is a schematic diagram of a partial cross-sectional structure inside the fourth receiving cavity of the present invention;

[0072] Figure 15 For the present invention Figure 14 A magnified schematic diagram of the H region in the diagram;

[0073] Figure 16 For the present invention Figure 5 A magnified schematic diagram of the structure of area A in the diagram;

[0074] Figure 17 For the present invention Figure 5 A magnified schematic diagram of the partial structure of region B in the diagram;

[0075] Figure 18 For the present invention Figure 5 A magnified schematic diagram of the C region in the diagram;

[0076] Figure 19 For the present invention Figure 5 A magnified schematic diagram of the D region in the diagram;

[0077] Figure 20 This is a schematic diagram of the opening structure of the pickling and rust removal component of the present invention;

[0078] Figure 21 This is a schematic diagram of the shut-off structure of the pickling and rust removal component of the present invention;

[0079] Figure 22 This is a schematic cross-sectional view of the pickling and rust removal component of the present invention;

[0080] Figure 23 This is a schematic diagram of the opening structure of the cleaning component of the present invention;

[0081] Figure 24 This is a schematic diagram of the closing structure of the cleaning component of the present invention;

[0082] Figure 25 This is a schematic diagram of the cross-sectional structure of the cleaning component of the present invention.

[0083] Explanation of icon numbers:

[0084] 1. Supporting base plate; 2. Detection component; 21. First housing; 22. Second housing; 23. First support plate; 3. Dry ice rust removal component; 31. First rust removal assembly; 311. First crossbar; 311a. First receiving cavity; 311b. First through groove; 312. First X-axis slide bar; 313. First lead screw slide; 314. Second crossbar; 314a. Second receiving cavity; 314b. Second through groove; 315. First Y-axis slide bar; 316. Second lead screw slide; 317. First slider; 318. Second slider; 319. First high-pressure nozzle; 3110. First heat-insulating and pressure-maintaining storage tank; 3111. 3112. First discharge pipe; 3112. First mounting block; 3112a. First receiving groove; 3113. First electrical connection block; 3114. First spring; 3115. First contact piece; 3116. Second mounting block; 3116a. Second receiving groove; 3117. Second electrical connection block; 3118. Second spring; 3119. Second contact piece; 32. Second rust removal assembly; 321. Third crossbar; 321a. Third receiving cavity; 321b. Third through groove; 322. Second X-axis slide bar; 323. Third lead screw slide; 324. Fourth crossbar; 324a. Fourth receiving cavity; 324b. Fourth through groove; 325. Second Y-axis slide bar; 326, Fourth lead screw slide table; 327, Third slider; 328, Fourth slider; 329, Second high-pressure nozzle; 3210, Second heat-insulating and pressure-maintaining storage tank; 3211, Second discharge pipe; 3212, Third mounting block; 3212a, Third receiving groove; 3213, Third electrical connection block; 3214, Third spring; 3215, Third contact piece; 3216, Fourth mounting block; 3216a, Fourth receiving groove; 3217, Fourth electrical connection block; 3218, Fourth spring; 3219, Fourth contact piece; 33, Second support plate; 4, Pickling and rust removal components; 41, Third box body; 41 a. First material groove; 41b. Fifth receiving cavity; 42. Fourth box body; 42a. Second material groove; 43. First nylon fiber layer; 44. First pressure plate; 45. Second nylon fiber layer; 46. First hydraulic cylinder; 47. Heating tube; 48. Heat conducting rod; 5. Cleaning component; 51. Fifth box body; 51a. Third material groove; 52. Sixth box body; 52a. Fourth material groove; 53. Third nylon fiber layer; 54. Second pressure plate; 55. Fourth nylon fiber layer; 56. Second hydraulic cylinder; 57. Third high-pressure nozzle; 58. Fourth high-pressure nozzle; 59. Drain pipe; 6. Six-roll reversible leveling machine.

[0085] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0086] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0087] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0088] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0091] This invention proposes a leveling machine and its control method based on hydraulic AGC and a six-roll reversible structure.

[0092] Please refer to Figures 1 to 25 The leveling machine based on hydraulic AGC and a six-roll reversible structure includes a horizontally arranged support base plate 1. The base plate is sequentially provided with a detection component 2, a dry ice rust removal component 3, an acid pickling rust removal component 4, a cleaning component 5, and a six-roll reversible leveling machine 6. The steel strip passes through the detection component 2, the dry ice rust removal component 3, the acid pickling rust removal component 4, the cleaning component 5, and the six-roll reversible leveling machine 6 in sequence.

[0093] The detection component 2 is used to detect whether there are rust spots on the surface of the steel strip.

[0094] The dry ice rust removal component 3 is used to spray dry ice particles onto the rust spots on the surface of the steel strip. The dry ice sublimates into gas in the rust layer gaps of the rust spots, expands in volume to generate local pressure, and opens up the bonding surface between the rust layer and the substrate, thereby realizing the rust removal operation on the surface of the steel strip.

[0095] The pickling and rust removal component 4 is used to scrub the surface of the steel strip after dry ice rust removal in citric acid solution to further remove rust residue.

[0096] The cleaning component 5 is used to spray and clean the pickled steel strip to remove residual citric acid solution adhering to the surface of the steel strip.

[0097] The six-roll reversible leveling machine 6 is used to level the cleaned steel strip.

[0098] In this invention, the technical solution innovatively integrates four major modules: dry ice rust removal, citric acid scrubbing, high-pressure cleaning, and six-roller reversible leveling, achieving continuous production throughout the entire process. The dry ice rust removal component 3 utilizes the sublimation expansion principle of dry ice to physically peel off the oxide scale, reducing the amount of strong acid used by more than 90%. Citric acid scrubbing further removes residual rust (pH=4, 100% biodegradability), avoiding the risk of heavy metal pollution to the soil associated with traditional hydrochloric acid washing. Finally, the six-roller reversible leveling machine 6 (hydraulic AGC control) precisely controls the strip shape (flatness ±1μm) with a small reduction of 0.5-1%, eliminating slip lines and improving hardness uniformity to achieve flatness of the steel strip. By removing most of the rust with dry ice and removing residual rust with citric acid, rust removal of the steel strip can be performed without polluting the environment, thus solving the problem of environmental pollution.

[0099] Please refer to the appendix. Figure 2-3 The detection component 2 includes a first box 21 arranged horizontally with its opening facing upwards, a second box 22 arranged horizontally above the first box 21 with its opening facing downwards, a first support plate 23 symmetrically arranged vertically on both sides of the opening along the length direction of the upper side of the first box 21, and the opening of the second box 22 near the first box 21 is hinged to any one of the first support plates 23 along its length direction. The length direction of the first box 21 is in the same direction as the length direction of the second box 22, and the lengths of the first box 21 and the second box 22 are the same. A plurality of first multispectral confocal sensors for detecting towards the second box 22 are arranged in an array at the bottom of the inner wall of the first box 21, and a plurality of second multispectral confocal sensors for detecting towards the first box 21 are arranged in an array at the bottom of the inner wall of the second box 22.

[0100] The first multispectral confocal sensor, which is distributed in an array, is distributed along the length of the first housing 21 in a direction that corresponds to the X-axis in the coordinate system, and along the width of the first housing 21 in a direction that corresponds to the Y-axis in the coordinate system; the second multispectral confocal sensor, which is distributed in an array, is distributed along the length of the first housing 21 in a direction that corresponds to the X-axis in the coordinate system, and along the width of the first housing 21 in a direction that corresponds to the Y-axis in the coordinate system.

[0101] The detection component 2 also includes a coordinate system module, which is used to acquire and store the coordinate points of each first multispectral confocal sensor and the coordinate points of each second multispectral confocal sensor. The symmetrically arranged matrix multispectral confocal sensors enable simultaneous scanning of both sides of the strip, achieving a detection accuracy of 0.1μm and accurately identifying oxide scale within microcracks (traditional visual inspection has a false negative rate >15%). The XY coordinate system module digitally stores the rust spot location with a positioning error <50μm. The hinged first housing 21 and second housing 22 allow the second housing 22 to be opened to allow the steel strip to be placed into the first housing 21. The detection data is transmitted in real-time to the dry ice blasting system, achieving dynamic matching between the rust spot coordinates and the nozzle movement path, reducing the ineffective blasting area by more than 70% and significantly reducing dry ice consumption.

[0102] Please refer to the appendix. Figure 4-5 16-17, the dry ice rust removal component 3 includes a first rust removal component 31 and a second rust removal component 32. The first rust removal component 31 is used to remove rust from the lower surface of the steel strip, and the second rust removal component 32 is used to remove rust from the upper surface of the steel strip.

[0103] The first rust removal component 31 includes two transversely symmetrically arranged first crossbars 311. The extension direction of the first crossbars 311 is in the same direction as the length direction of the first housing 21. Each first crossbar 311 has a first receiving cavity 311a. Each first receiving cavity 311a is provided with a first lead screw slide 313. The sliding direction of the slider of the first lead screw slide 313 is in the same direction as the length direction of the first crossbar 311. The sliding distance of the slider of the first lead screw slide 313 is greater than the length of the first housing 21. On the side of the rods 311 that are close to each other, a first through groove 311b is formed that is connected to the first receiving cavity 311a. The extension direction of the first through groove 311b is the same as the extension direction of the first cross rod 311. A first X-axis slide rod 312 is provided transversely between the two first cross rods 311. A first slider 317 is slidably provided on the first X-axis slide rod 312. The two ends of the first X-axis slide rod 312 extend into the adjacent first cross rods 311 respectively and are connected to the slider of the first lead screw slide 313 in the first cross rod 311.

[0104] The first rust removal assembly 31 further includes two transversely symmetrically arranged second crossbars 314. The extension direction of the two second crossbars 314 is perpendicular to the extension direction of the first crossbars 311. The two first crossbars 311 are located between the two second crossbars 314, and the two second crossbars 314 are connected to the two first crossbars 311 to form a rectangular frame. Each second crossbar 314 has a second receiving cavity 314a, and each second receiving cavity 314a is provided with a second lead screw slide 316. The sliding direction of the slider of the second lead screw slide 316 is in the same direction as the length direction of the second crossbar 314. The sliding distance of the slider of 16 is greater than the width of the first box 21. The two second crossbars 314 are respectively connected to the second receiving cavity 314a by forming a second through groove 314b on the side of the two crossbars 314 that are close to each other. The extension direction of the second through groove 314b is the same as the extension direction of the second crossbar 314. A first Y-axis slide bar 315 is provided transversely between the two second crossbars 314. A second slider 318 is slidably provided on the first Y-axis slide bar 315. The two ends of the first Y-axis slide bar 315 extend into the adjacent second crossbars 314 respectively and are connected to the slider of the second lead screw slide 316 in the second crossbar 314.

[0105] The extension direction of the first X-axis slide bar 312 is perpendicular to the extension direction of the first Y-axis slide bar 315; the first X-axis slide bar 312 is located below the first Y-axis slide bar 315, and the second slider 318 is connected to the first slider 317.

[0106] The first rust removal component 31 also includes a first heat-insulating and pressure-maintaining storage tank 3110 disposed on the support base plate 1. The first heat-insulating and pressure-maintaining storage tank 3110 contains dry ice particles of various sizes. A first solenoid valve is connected to the bottom of the first heat-insulating and pressure-maintaining storage tank 3110. The end of the first solenoid valve away from the first heat-insulating and pressure-maintaining storage tank 3110 is connected to a first discharge pipe 3111. The second slider 318 is provided with a first high-pressure nozzle 319 spraying towards the side away from the first slider 317. The end of the first discharge pipe 3111 away from the first solenoid valve is connected to the first high-pressure nozzle 319. The first rust removal component 31 also includes a first air pump for injecting air into the first heat-insulating and pressure-maintaining storage tank 3110. The first heat-insulating and pressure-maintaining storage tank 3110 is provided with a first pressure sensor for detecting the pressure inside the tank. The first heat-insulating and pressure-maintaining storage tank 3110 is also provided with a first electronic pressure relief valve.

[0107] The first lead screw slide 313 drives the first X-axis slide 312 to move in the direction of the X-axis in the coordinate system. The first receiving cavity 311a is provided with a first X-axis number axis detection component for detecting the position of the slider of the first lead screw slide 313. The distance between the two number axes of the X-axis is the same as the distance between the multiple first multispectral confocal sensors arranged in a row.

[0108] The second lead screw slide 316 drives the first Y-axis slide 315 to move in the Y-axis direction of the coordinate system. The second receiving cavity 314a is equipped with a first Y-axis multi-axis detection component for detecting the position of the slider of the second lead screw slide 316. The distance between the two Y-axis multi-axis is the same as the distance between the multiple first multispectral confocal sensors arranged in a row. The first lead screw slide 313 and the second lead screw slide 316 are used to drive the first high-pressure nozzle 319. The first air pump is used to inject gas into the first heat-insulating and pressure-maintaining storage tank 3110 to keep the gas pressure in the first heat-insulating and pressure-maintaining storage tank 3110 within the threshold value, so that the dry ice particles sprayed by the first high-pressure nozzle 319 are sprayed out at high speed. The first electronic pressure relief valve is connected to the first pressure sensor. After the first pressure sensor detects that the pressure in the first heat-insulating and pressure-maintaining storage tank 3110 is greater than the threshold value, the first electronic pressure relief valve opens to release the gas in the first heat-insulating and pressure-maintaining storage tank 3110 until the pressure in the first heat-insulating and pressure-maintaining storage tank 3110 is lower than the threshold value.

[0109] Please refer to the appendix. Figure 4-5 18-19, the second rust removal component 32 includes two third crossbars 321 arranged laterally symmetrically. The two third crossbars 321 are arranged one-to-one above the first crossbar 311 and are parallel to the first crossbar 311. A third support plate is distributed on the side of each of the two first crossbars 311 near the third crossbar 321. The extension direction of the third support plate is the same as the extension direction of the first crossbar 311. Any one of the third crossbars 321 is hinged to the third support plate below it.

[0110] Each of the third crossbars 321 has a third receiving cavity 321a, and each of the third receiving cavities 321a has a third lead screw slide 323. The sliding direction of the slider of the third lead screw slide 323 is the same as the length direction of the third crossbar 321. The sliding distance of the slider of the third lead screw slide 323 is greater than the length of the first box 21. A third through groove 321b communicating with the third receiving cavity 321a is formed through the side of the two third crossbars 321 that are close to each other. The extension direction of the third through groove 321b is the same as the extension direction of the third crossbar 321. A second X-axis slide bar 322 is provided transversely between the two third crossbars 321. A third slider 327 is slidably provided on the second X-axis slide bar 322. The two ends of the second X-axis slide bar 322 extend into the adjacent third crossbars 321 respectively and are connected to the slider of the third lead screw slide 323 in the third crossbar 321.

[0111] The second rust removal assembly 32 further includes two transversely symmetrically arranged fourth crossbars 324. The extension direction of the two fourth crossbars 324 is perpendicular to the extension direction of the third crossbars 321. The two third crossbars 321 are located between the two fourth crossbars 324, and the two fourth crossbars 324 are connected to the two third crossbars 321 to form a rectangular frame. Each fourth crossbar 324 has a fourth receiving cavity 324a, and each fourth receiving cavity 324a is provided with a fourth lead screw slide 326. The sliding direction of the slider of the fourth lead screw slide 326 is in the same direction as the length direction of the fourth crossbar 324. The sliding distance of the slider of 26 is greater than the width of the first box 21. The two fourth crossbars 324 are respectively connected to the fourth receiving cavity 324a by forming a fourth through groove 324b on the side of the two crossbars 324. The extension direction of the fourth through groove 324b is the same as the extension direction of the fourth crossbar 324. A second Y-axis slide bar 325 is provided transversely between the two fourth crossbars 324. A fourth slider 328 is slidably provided on the second Y-axis slide bar 325. The two ends of the second Y-axis slide bar 325 extend into the adjacent fourth crossbars 324 respectively and are connected to the slider of the fourth lead screw slide 326 in the fourth crossbar 324.

[0112] The extension direction of the second X-axis slide bar 322 is perpendicular to the extension direction of the second Y-axis slide bar 325; the second X-axis slide bar 322 is located below the second Y-axis slide bar 325, and the fourth slider 328 is connected to the third slider 327;

[0113] The second rust removal component 32 also includes a second heat-insulating and pressure-maintaining storage tank 3210 disposed on the support base plate 1. The second heat-insulating and pressure-maintaining storage tank 3210 contains dry ice particles of various sizes. A second solenoid valve is connected to the bottom of the second heat-insulating and pressure-maintaining storage tank 3210. The end of the second solenoid valve away from the second heat-insulating and pressure-maintaining storage tank 3210 is connected to a second discharge pipe 3211. The third slider 327 is provided with a second high-pressure nozzle 329 spraying towards the side away from the fourth slider 328. The end of the second discharge pipe 3211 away from the second solenoid valve is connected to the second high-pressure nozzle 329. The second rust removal component 32 also includes a second air pump for injecting air into the second heat-insulating and pressure-maintaining storage tank 3210. The second heat-insulating and pressure-maintaining storage tank 3210 is provided with a second pressure sensor for detecting the pressure inside the tank. The second heat-insulating and pressure-maintaining storage tank 3210 is also provided with a second electronic pressure relief valve.

[0114] The direction in which the third lead screw slide 323 drives the second X-axis slide 322 to move is the X-axis in the coordinate system. The third receiving cavity 321a is provided with a second X-axis number axis detection component for detecting the position of the slider of the third lead screw slide 323. The distance between the two number axes of the X-axis is the same as the distance between the multiple second multispectral confocal sensors arranged in a row.

[0115] The direction in which the fourth lead screw slide 326 drives the second Y-axis slide 325 to move is the Y-axis in the coordinate system. The fourth receiving cavity 324a is provided with a second Y-axis number axis detection component for detecting the position of the slider of the fourth lead screw slide 326. The distance between the two number axes of the Y-axis is the same as the distance between the multiple second multispectral confocal sensors arranged in a row.

[0116] The length of the third crossbar 321 is the same as the length of the first crossbar 311, and the length of the fourth crossbar 324 is the same as the length of the second crossbar 314. The fourth crossbar 324 is located directly above the second crossbar 314. The third lead screw slide 323 and the fourth lead screw slide 326 are used to drive the second high-pressure nozzle 329. The second air pump is used to inject gas into the second heat-insulating and pressure-maintaining storage tank 3210 to keep the gas pressure in the second heat-insulating and pressure-maintaining storage tank 3210 within the threshold value, so that the dry ice particles sprayed by the second high-pressure nozzle 329 are sprayed out at high speed. The second electronic pressure relief valve is connected to the second pressure sensor. After the second pressure sensor detects that the pressure in the second heat-insulating and pressure-maintaining storage tank 3210 is greater than the threshold value, the second electronic pressure relief valve opens to release the gas in the second heat-insulating and pressure-maintaining storage tank 3210 until the pressure in the second heat-insulating and pressure-maintaining storage tank 3210 is lower than the threshold value.

[0117] The upper and lower rust removal components are mirror images of each other. The second insulated and pressure-maintaining storage tank (3210) provides independent material supply, preventing interference between the upper and lower nozzles. The contact point spacing of the second X / Y axis detection component is aligned with the upper sensor matrix to ensure simultaneous removal of rust spots on both sides. The nozzle movement range covers the full width of the strip, with a response time ≤0.2s. When the upper and lower nozzles work together, the spray volume is adjusted in real time via a pressure sensor (the upper surface receives a 20% increase in flow to overcome gravity), ensuring consistent rust removal on both sides.

[0118] Please refer to the appendix. Figure 7-10 The first X-axis multi-axis detection assembly includes a first mounting block 3112 disposed on the side of the slider of the first lead screw slide 313 near the cavity wall of the first receiving cavity 311a. A first receiving groove 3112a is recessed on the side of the first mounting block 3112 opposite to the slider of the first lead screw slide 313. A first electrical connector 3113 is slidably disposed within the first receiving groove 3112a. The side of the first electrical connector 3113 near the bottom of the first receiving groove 3112a is connected to the bottom of the first receiving groove 3112a via at least one first spring 3114. 14 is used to drive the first electrical connector 3113 to extend out of the first receiving groove 3112a toward the side opposite to the bottom of the first receiving groove 3112a. The inner wall of the first receiving cavity 311a is evenly spaced with a plurality of first contact pieces 3115 for contacting the first electrical connector 3113. The distribution direction of the plurality of first contact pieces 3115 is the same as the moving direction of the slider of the first lead screw slide 313. The distance between two first contact pieces 3115 is equal to the distance between two first multispectral confocal sensors. Each first contact piece 3115 records an X-axis coordinate data.

[0119] The first Y-axis multi-axis detection assembly includes a second mounting block 3116 disposed on the side of the slider of the second lead screw slide 316 near the cavity wall of the second receiving cavity 314a. A second receiving groove 3116a is recessed on the side of the second mounting block 3116 opposite to the slider of the second lead screw slide 316. A second electrical connector 3117 is slidably disposed within the second receiving groove 3116a. The side of the second electrical connector 3117 near the bottom of the second receiving groove 3116a is connected to the bottom of the second receiving groove 3116a via at least one second spring 3118. 18 is used to drive the second electrical connector 3117 to extend out of the second receiving groove 3116a toward the side opposite to the bottom of the second receiving groove 3116a. The inner wall of the second receiving cavity 314a is evenly spaced with a plurality of second contact pieces 3119 for contacting the first electrical connector 3113. The distribution direction of the plurality of second contact pieces 3119 is the same as the moving direction of the slider of the second lead screw slide 316. The distance between two second contact pieces 3119 is equal to the distance between two second multispectral confocal sensors. Each second contact piece 3119 records a Y-axis coordinate data. In the first X-axis digital axis detection assembly, each first contact piece 3115 corresponds to a unique X coordinate and each first contact piece 3115 corresponds to a unique Y coordinate. Suppose that the first electrical connector 3113 moves to the third first contact piece 3115 and the second electrical connector 3117 moves to the sixth second contact piece 3119, then the coordinate position of the current first high-pressure nozzle 319 is (X3, Y6).

[0120] The first electrical connector 3113 presses the contact plate tightly with a spring (elastic coefficient 5N / mm), ensuring reliable contact even if the slider wears 0.1mm, thus eliminating coordinate drift caused by mechanical backlash. The contact signal is transmitted to the control system via the CAN bus, where it is compared with the rust spot coordinates in real time, driving the first high-pressure nozzle 319 to reach the target position within 0.5s.

[0121] Please refer to the appendix. Figure 12-15The second X-axis multi-axis detection assembly includes a third mounting block 3212 disposed on the side of the slider of the third lead screw slide 323 near the cavity wall of the third receiving cavity 321a. A third receiving groove 3212a is recessed on the side of the third mounting block 3212 away from the slider of the third lead screw slide 323. A third electrical connector 3213 is slidably disposed within the third receiving groove 3212a. The side of the third electrical connector 3213 near the bottom of the third receiving groove 3212a is connected to the bottom of the third receiving groove 3212a via at least one third spring 3214. 14 is used to drive the third electrical connector 3213 to extend out of the third receiving groove 3212a toward the side opposite to the bottom of the third receiving groove 3212a. The inner wall of the third receiving cavity 321a is evenly spaced with a plurality of third contact pieces 3215 for contacting the third electrical connector 3213. The distribution direction of the plurality of third contact pieces 3215 is the same as the moving direction of the slider of the third lead screw slide 323. The distance between two third contact pieces 3215 is equal to the distance between two second multispectral confocal sensors. Each third contact piece 3215 records an X-axis coordinate data.

[0122] The first Y-axis multi-axis detection assembly includes a fourth mounting block 3216 disposed on the side of the slider of the fourth lead screw slide 326 near the cavity wall of the fourth receiving cavity 324a. A fourth receiving groove 3216a is recessed on the side of the fourth mounting block 3216 opposite to the slider of the fourth lead screw slide 326. A fourth electrical connector 3217 is slidably disposed within the fourth receiving groove 3216a. The side of the fourth electrical connector 3217 near the bottom of the fourth receiving groove 3216a is connected to the bottom of the fourth receiving groove 3216a via at least one fourth spring 3218. 18 is used to drive the fourth electrical connector 3217 to extend out of the fourth receiving groove 3216a toward the side opposite to the bottom of the fourth receiving groove 3216a. The inner wall of the fourth receiving cavity 324a is evenly spaced with a plurality of fourth contact pieces 3219 for contacting the third electrical connector 3213. The distribution direction of the plurality of fourth contact pieces 3219 is the same as the moving direction of the slider of the fourth lead screw slide 326. The distance between two fourth contact pieces 3219 is equal to the distance between two second multispectral confocal sensors. Each fourth contact piece 3219 records a Y-axis coordinate data. In the second X-axis digital axis detection assembly, each third contact piece 3215 corresponds to a unique X coordinate and each third contact piece 3215 corresponds to a unique Y coordinate. Suppose that the third electrical connector 3213 moves to the third third contact piece 3215 and the fourth electrical connector 3217 moves to the sixth fourth contact piece 3219, then the coordinate position of the current second high-pressure nozzle 329 is (X 3, Y 6).

[0123] The third electrical connector 3213 presses the contact plate tightly with a spring (elastic coefficient 5N / mm), ensuring reliable contact even with 0.1mm wear on the slider, thus eliminating coordinate drift caused by mechanical backlash. The contact signal is transmitted to the control system via the CAN bus, where it is compared in real time with the coordinates of the rust spot, driving the second high-pressure nozzle 329 to reach the target position within 0.5s.

[0124] Please refer to the appendix. Figure 20-22 The pickling and rust removal component 4 includes a third box 41 arranged horizontally with its opening facing upwards. The third box 41 contains a citric acid solution. Above the third box 41, a fourth box 42 is arranged horizontally with its opening facing downwards. The edge of the fourth box 42 near the third box 41 is hinged to the edge of the third box 41 along its length. The length directions of the third box 41 and the fourth box 42 are the same, and the length of the third box 41 is the same as that of the first box 21. A first nylon is provided at the bottom of the inner wall of the third box 41. The fourth box 42 has a nylon fiber layer 43. A first pressure plate 44 is provided on the bottom wall of the fourth box 42. A second nylon fiber layer 45 is provided on the side of the first pressure plate 44 away from the bottom wall of the fourth box 42. The second nylon fiber layer 45 is located above the first nylon fiber layer 43. A first hydraulic cylinder 46 is provided on the side of the fourth box 42 away from the third box 41 to drive the first pressure plate 44 to move towards or away from the first nylon fiber layer 43. A third pressure sensor is provided on the side of the first pressure plate 44 near the second nylon fiber layer 45. Nano-diamond sand is attached to the fibers of the first nylon fiber layer 43 and the fibers of the first nylon fiber layer 43 respectively.

[0125] The third box 41 has two recessed edges in the width direction to form a first material groove 41a for the steel strip to pass through, and the fourth box 42 has two recessed edges in the width direction to form a second material groove 42a for the steel strip to pass through. The first material groove 41a and the second material groove 42a cooperate to form a rectangular frame for the steel strip to pass through.

[0126] The bottom of the third housing 41 forms a fifth receiving cavity 41b, and a heating tube 47 is installed inside the fifth receiving cavity 41b. Multiple heat-conducting rods 48 extending into the fifth receiving cavity 41b are provided on the bottom inner wall of the third housing 41. The citric acid solution (5% concentration, 45℃) in the third housing 41 is kept at the optimal reaction temperature by the heating tube 47 and the heat-conducting rods 48, improving the pickling efficiency by 3 times compared to room temperature pickling. Nano-diamond abrasive (100nm particle size) is embedded in the upper and lower nylon fiber layers (fiber diameter 20μm), and is driven by a hydraulic cylinder at a speed of 5-10 N / cm. 2Pressure scrubbing of the steel strip. A third pressure sensor provides real-time feedback on the contact pressure to prevent deformation of thin steel strips (thickness < 0.3 mm). Nano-diamond abrasive creates a micro-cutting effect, thoroughly removing rust residue left by dry ice.

[0127] Please refer to the appendix. Figure 23-25 The cleaning component 5 includes a fifth box 51 arranged horizontally with its opening facing upwards, and a sixth box 52 arranged horizontally above the fifth box 51 with its opening facing downwards. The longitudinal edge of the sixth box 52 near the fifth box 51 is hinged to the longitudinal edge of the fifth box 51. The longitudinal direction of the fifth box 51 is the same as that of the sixth box 52, and the length of the fifth box 51 is the same as that of the sixth box 52. The longitudinal direction of the fifth box 51 is the same as that of the first box 21. The bottom of the inner wall is provided with a third nylon fiber layer 53. The bottom wall of the sixth box 52 is provided with a second pressure plate 54. The side of the second pressure plate 54 away from the bottom wall of the sixth box 52 is provided with a fourth nylon fiber layer 55. The fourth nylon fiber layer 55 is located above the third nylon fiber layer 53. The side of the sixth box 52 away from the fifth box 51 is provided with a second hydraulic cylinder 56 for driving the second pressure plate 54 to move toward or away from the third nylon fiber layer 53. The side of the second pressure plate 54 near the fourth nylon fiber layer 55 is provided with a fourth pressure sensor.

[0128] The fifth box 51 has two recessed edges in the width direction to form a third material groove 51a for the steel strip to pass through, and the sixth box 52 has two recessed edges in the width direction to form a fourth material groove 52a for the steel strip to pass through. The third material groove 51a and the fourth material groove 52a cooperate to form a rectangular frame for the steel strip to pass through.

[0129] The inner wall of the fifth housing 51 is provided with multiple third high-pressure nozzles 57 that spray water towards the sixth housing 52, and the inner wall of the sixth housing 52 is provided with multiple fourth high-pressure nozzles 58 that spray water towards the fifth housing 51. The third and fourth high-pressure nozzles 57 and 58 are used to spray clean water. A drain pipe 59 is provided at the bottom of the fifth housing 51. When the steel strip passes through the fifth housing 51, the third and fourth high-pressure nozzles 57 and 58 spray clean water to spray the surface of the steel strip, covering the entire width of the strip and impacting to remove residual citric acid. The drain pipe 59 connects to a reverse osmosis system, achieving 90% water reuse.

[0130] Please refer to the appendix. Figure 1The dry ice particles include at least two particle sizes: 50nm and 200μm. The upper edge of the first housing 21 is higher than the upper surface of the second crossbar 314, and the bottom of the first material groove 41a is higher than the upper surface of the second crossbar 314. 50nm dry ice particles penetrate microcracks in the oxide scale (width > 0.05μm), while 200μm particles provide kinetic energy impact (velocity 150m / s). Using a tiered approach improves rust removal efficiency by 35% compared to using a single particle size. The upper edge of the first housing 21 is 20mm higher than the second crossbar 314, forming a strip support plane to ensure a ≥15mm safety gap between the strip (minimum thickness 0.15mm) and the nozzle, preventing scratching.

[0131] This invention also proposes a control method for a hydraulic AGC-based six-roll reversible structure leveling machine, employing any of the aforementioned hydraulic AGC-based six-roll reversible structure leveling machines. The control method for the hydraulic AGC-based six-roll reversible structure leveling machine includes the following steps:

[0132] S1. Rust spot detection and coordinate positioning on steel strip surface

[0133] When the steel strip passes through the first box 21, the first multispectral confocal sensor array and the second multispectral confocal sensor array simultaneously scan the upper and lower surfaces of the steel strip to identify the location of rust spots.

[0134] S2. Dry ice targeted rust removal control

[0135] When the steel strip passes through the dry ice rust removal component 3, the lower surface is rusted: the first lead screw slide 313 and the second lead screw slide 316 are controlled to drive the first high-pressure nozzle 319 to move to the coordinate position of the rust spot; the first solenoid valve is opened to spray 50nm and 200μm graded dry ice particles at a pressure of 0.5-1MPa, and the spraying time is adaptively calculated according to the area of ​​the rust spot.

[0136] Rust removal on the upper surface: Synchronously control the third lead screw slide 323 and the fourth lead screw slide 326 as described in claim 4 to drive the second high-pressure nozzle 329 to move to the corresponding coordinate; open the second solenoid valve to increase the flow rate on the upper surface by 20% to compensate for the influence of gravity;

[0137] S3. Citric acid scrubbing control

[0138] Start heating element 47 to raise the temperature of the citric acid solution to 45±1℃;

[0139] The first hydraulic cylinder 46 is driven to press down, so that the second nylon fiber layer 45 comes into contact with the steel strip, and the third pressure sensor provides real-time feedback of the pressure value;

[0140] A steel belt passes through the scrubbing zone at a speed of 5 m / min, and the surface is scrubbed by a layer of nano-diamond fiber.

[0141] S4. High-pressure cleaning and residue control

[0142] Start the third high-pressure nozzle 57 and the fourth high-pressure nozzle 58 to spray clean water at a pressure of 20MPa.

[0143] The second hydraulic cylinder 56 drives the fourth nylon fiber layer 55 to press the steel strip, and the fourth pressure sensor maintains the pressure at 3-8 N / cm. 2 ;

[0144] Drainage pipe 59 discharges wastewater into the reverse osmosis system;

[0145] S5. The cleaned steel strip is fed into the six-roll reversible leveler 6 to perform the leveling operation on the steel strip. At the same time, the six-roll reversible leveler 6 provides power for the movement of the steel strip.

[0146] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A temper mill based on hydraulic AGC and six-high reversible construction, characterized in that, It includes a support substrate arranged transversely, and a detection component, a dry ice rust removal component, an acid pickling rust removal component, a cleaning component and a six-roller reversible leveler are arranged on the substrate in sequence; the steel belt passes through the detection component, the dry ice rust removal component, the acid pickling rust removal component, the cleaning component and the six-roller reversible leveler in sequence; The detection component is used for detecting whether there is rust spot on the surface of the steel belt; The dry ice rust removal component is used for spraying dry ice particles on the rust spot on the surface of the steel belt, and the dry ice sublimates into gas in the gap of the rust layer of the rust spot, expands in volume to generate local pressure, and separates the bonding surface of the rust layer and the substrate, thereby achieving the rust removal operation on the rust spot on the surface of the steel belt; The acid pickling rust removal component is used for scrubbing the surface of the steel belt in the citric acid solution after the dry ice rust removal operation, so as to further remove the residual rust spot; The cleaning component is used for spraying and cleaning the steel belt after the acid pickling, so as to remove the residual citric acid solution attached to the surface of the steel belt; The six-roller reversible leveler is used for performing the leveling operation on the steel belt after the cleaning.

2. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 1, characterized in that, The detection component includes a first box body arranged transversely and having an upward opening, a second box body arranged transversely above the first box body and having a downward opening, first support plates arranged vertically along the length direction of the upper side of the first box body and symmetrically on both sides of the opening, and a length direction of the side of the second box body close to the first box body being hingedly connected to any first support plate, the length direction of the first box body being the same as the length direction of the second box body, and the length of the first box body being consistent with the length of the second box body, a plurality of first multi-spectrum confocal sensors arranged in an array on the inner wall bottom of the first box body and detecting in the direction of the second box body, and a plurality of second multi-spectrum confocal sensors arranged in an array on the inner wall bottom of the second box body and detecting in the direction of the first box body; The direction in which the first multi-spectrum confocal sensors arranged in an array are distributed along the length direction of the first box body is the X-axis of the coordinate system, and the direction in which the first multi-spectrum confocal sensors arranged in an array are distributed along the width direction of the first box body is the Y-axis of the coordinate system; the direction in which the second multi-spectrum confocal sensors arranged in an array are distributed along the length direction of the first box body is the X-axis of the coordinate system, and the direction in which the second multi-spectrum confocal sensors arranged in an array are distributed along the width direction of the first box body is the Y-axis of the coordinate system; The detection component further includes a coordinate system module, which is used for acquiring and storing the coordinate points of each first multi-spectrum confocal sensor and acquiring and storing the coordinate points of each second multi-spectrum confocal sensor.

3. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 2, characterized in that, The dry ice rust removal component includes a first rust removal assembly and a second rust removal assembly, the first rust removal assembly is used for performing the rust removal operation on the lower surface of the steel belt, and the second rust removal assembly is used for performing the rust removal operation on the upper surface of the steel belt; The first rust removal assembly comprises two first horizontal rods which are symmetrically arranged transversely, the extension direction of the first horizontal rod is the same as the length direction of the first box body, a first receiving cavity is formed in each first horizontal rod, a first screw rod sliding table is arranged in each first receiving cavity, the moving direction of the sliding block of the first screw rod sliding table is the same as the length direction of the first horizontal rod, the sliding distance of the sliding block of the first screw rod sliding table is greater than the length of the first box body, a first through groove which is in communication with the first receiving cavity is formed in the side of each first horizontal rod which is close to the other first horizontal rod, the extension direction of the first through groove is the same as the extension direction of the first horizontal rod, a first X-axis sliding rod is arranged transversely between the two first horizontal rods, a first sliding block is slidably arranged on the first X-axis sliding rod, and the two ends of the first X-axis sliding rod are respectively inserted into the adjacent first horizontal rods and connected with the sliding blocks of the first screw rod sliding tables in the first horizontal rods. The first rust removal assembly further comprises two second horizontal rods which are symmetrically arranged transversely, the extension direction of the second horizontal rod is perpendicular to the extension direction of the first horizontal rod, the two first horizontal rods are located between the two second horizontal rods, and the two second horizontal rods are connected with the two first horizontal rods to form a rectangular frame, a second receiving cavity is formed in each second horizontal rod, a second screw rod sliding table is arranged in each second receiving cavity, the moving direction of the sliding block of the second screw rod sliding table is the same as the length direction of the second horizontal rod, the sliding distance of the sliding block of the second screw rod sliding table is greater than the width of the first box body, a second through groove which is in communication with the second receiving cavity is formed in the side of each second horizontal rod which is close to the other second horizontal rod, the extension direction of the second through groove is the same as the extension direction of the second horizontal rod, a first Y-axis sliding rod is arranged transversely between the two second horizontal rods, a second sliding block is slidably arranged on the first Y-axis sliding rod, and the two ends of the first Y-axis sliding rod are respectively inserted into the adjacent second horizontal rods and connected with the sliding blocks of the second screw rod sliding tables in the second horizontal rods. The extension direction of the first X-axis sliding rod is perpendicular to the extension direction of the first Y-axis sliding rod, the first X-axis sliding rod is located below the first Y-axis sliding rod, and the second sliding block is connected with the first sliding block. The first rust removal assembly further comprises a first heat preservation and pressure maintaining storage tank which is arranged on the supporting base plate, a plurality of dry ice particles with different particle sizes are stored in the first heat preservation and pressure maintaining storage tank, a first electromagnetic valve is in communication with the lower portion of the first heat preservation and pressure maintaining storage tank, a first discharge pipe is connected to the end of the first electromagnetic valve which is away from the first heat preservation and pressure maintaining storage tank, a first high-pressure nozzle which sprays towards the side away from the first sliding block is arranged on the second sliding block, the end of the first discharge pipe which is away from the first electromagnetic valve is connected with the first high-pressure nozzle, the first rust removal assembly further comprises a first air pump which is used for injecting air into the first heat preservation and pressure maintaining storage tank, a first pressure sensor which is used for detecting the pressure in the tank body is arranged on the first heat preservation and pressure maintaining storage tank, and a first electronic pressure relief valve is further arranged on the first heat preservation and pressure maintaining storage tank. The moving direction of the first screw sliding table driving the first X-axis sliding rod is the X-axis in the coordinate system, the first X-axis numerical axis detection assembly for detecting the position of the sliding block of the first screw sliding table is arranged in the first accommodating cavity, and the interval between the two numerical axes of the X-axis is the same as the interval between the plurality of first multi-spectrum confocal sensors arranged in the array. The moving direction of the second screw sliding table driving the first Y-axis sliding rod is the Y-axis in the coordinate system, the first Y-axis numerical axis detection assembly for detecting the position of the sliding block of the second screw sliding table is arranged in the second accommodating cavity, and the interval between the two numerical axes of the Y-axis is the same as the interval between the plurality of first multi-spectrum confocal sensors arranged in the array.

4. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 3, characterized in that, The second rust removal assembly comprises two third cross rods arranged symmetrically in the transverse direction, the two third cross rods are arranged one by one above the first cross rods and parallel to the first cross rods, and one side of each of the two first cross rods close to the third cross rod is provided with a third supporting plate, the extending direction of the third supporting plate is the same as the extending direction of the first cross rod, and any third cross rod is hingedly connected with the third supporting plate below the third cross rod. Each third cross rod is formed with a third accommodating cavity, each third accommodating cavity is provided with a third screw sliding table, the moving direction of the sliding block of the third screw sliding table is the same as the length direction of the third cross rod, the sliding distance of the sliding block of the third screw sliding table is greater than the length of the first box body, and the side close to the third cross rod of each of the two third cross rods is formed with a third through groove in communication with the third accommodating cavity, the extending direction of the third through groove is the same as the extending direction of the third cross rod, a second X-axis sliding rod is arranged between the two third cross rods in the transverse direction, a third sliding block is arranged on the second X-axis sliding rod in a sliding mode, and the two ends of the second X-axis sliding rod are respectively inserted into the adjacent third cross rods and connected with the sliding blocks of the third screw sliding tables in the third cross rods. The second rust removal assembly further comprises two fourth cross rods arranged symmetrically in the transverse direction, the extending directions of the two fourth cross rods are perpendicular to the extending directions of the third cross rods, the two third cross rods are located between the two fourth cross rods, and the two fourth cross rods are connected with the two third cross rods to form a rectangular frame, each fourth cross rod is formed with a fourth accommodating cavity, each fourth accommodating cavity is provided with a fourth screw sliding table, the moving direction of the sliding block of the fourth screw sliding table is the same as the length direction of the fourth cross rod, the sliding distance of the sliding block of the fourth screw sliding table is greater than the width of the first box body, the side close to the fourth cross rod of each of the two fourth cross rods is formed with a fourth through groove in communication with the fourth accommodating cavity, the extending direction of the fourth through groove is the same as the extending direction of the fourth cross rod, a second Y-axis sliding rod is arranged between the two fourth cross rods in the transverse direction, a fourth sliding block is arranged on the second Y-axis sliding rod in a sliding mode, and the two ends of the second Y-axis sliding rod are respectively inserted into the adjacent fourth cross rods and connected with the sliding blocks of the fourth screw sliding tables in the fourth cross rods. The extending direction of the second X-axis sliding rod is perpendicular to the extending direction of the second Y-axis sliding rod, the second X-axis sliding rod is located below the second Y-axis sliding rod, and the fourth sliding block is connected with the third sliding block. The second rust removal assembly further comprises a second heat preservation and pressure maintaining storage tank arranged on the supporting base plate, a plurality of dry ice particles with different particle sizes are stored in the second heat preservation and pressure maintaining storage tank, a second electromagnetic valve is communicated with the lower portion of the second heat preservation and pressure maintaining storage tank, a second discharge pipe is connected to the end of the second electromagnetic valve away from the second heat preservation and pressure maintaining storage tank, a second high-pressure nozzle for spraying towards the side away from the fourth sliding block is arranged on the third sliding block, the end of the second discharge pipe away from the second electromagnetic valve is connected with the second high-pressure nozzle, the second rust removal assembly further comprises a second air pump for injecting air into the second heat preservation and pressure maintaining storage tank, a second pressure sensor for detecting the pressure in the tank body is arranged on the second heat preservation and pressure maintaining storage tank, and a second electronic pressure relief valve is further arranged on the second heat preservation and pressure maintaining storage tank; The direction in which the third screw sliding table drives the second X-axis sliding rod to move is the X-axis in the coordinate system, the third accommodating cavity is provided with a second X-axis numerical axis detection assembly for detecting the position of the sliding block of the third screw sliding table, and the interval between the two numerical axes of the X-axis is the same as the interval between the plurality of second multi-spectrum confocal sensors arranged in an array; The direction in which the fourth screw sliding table drives the second Y-axis sliding rod to move is the Y-axis in the coordinate system, the fourth accommodating cavity is provided with a second Y-axis numerical axis detection assembly for detecting the position of the sliding block of the fourth screw sliding table, and the interval between the two numerical axes of the Y-axis is the same as the interval between the plurality of second multi-spectrum confocal sensors arranged in an array; The length of the third cross rod is the same as that of the first cross rod, the length of the fourth cross rod is the same as that of the second cross rod, and the fourth cross rod is located directly above the second cross rod.

5. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 3, characterized in that, The first X-axis numerical axis detection assembly comprises a first mounting block arranged on the side of the sliding block of the first screw sliding table close to the cavity wall of the first accommodating cavity, a first accommodating groove is recessed on the side of the first mounting block away from the sliding block of the first screw sliding table, a first electric connecting block is slidably arranged in the first accommodating groove, at least one first spring is connected between the side of the first electric connecting block close to the groove bottom of the first accommodating groove and the groove bottom of the first accommodating groove, the first spring is used to drive the first electric connecting block to extend out of the first accommodating groove on the side away from the groove bottom of the first accommodating groove, a plurality of first contact pieces for contacting the first electric connecting block are uniformly and interval ly arranged on the inner wall of the first accommodating cavity, the distribution direction of the plurality of first contact pieces is the same as the moving direction of the sliding block of the first screw sliding table, the interval between the two first contact pieces is equal to the interval between the two first multi-spectrum confocal sensors, and each first contact piece records an X-axis linear coordinate data. The first Y-axis numerical axis detection assembly comprises a second mounting block arranged on the side of the sliding block of the second screw sliding table close to the cavity wall of the second accommodating cavity, the side of the second mounting block away from the sliding block of the second screw sliding table is recessed to form a second accommodating groove, a second electric connecting block is slidably arranged in the second accommodating groove, at least one second spring is arranged on the side of the second electric connecting block close to the groove bottom of the second accommodating groove and connected with the groove bottom of the second accommodating groove, the second spring is used for driving the second electric connecting block to extend out of the second accommodating groove on the side away from the groove bottom of the second accommodating groove, a plurality of second contact pieces for contacting the first electric connecting block are uniformly and interval arranged on the inner wall of the second accommodating cavity, the distribution direction of the plurality of second contact pieces is the same as the moving direction of the sliding block of the second screw sliding table, the interval between the two second contact pieces is equal to the interval between the two second multi-spectrum confocal sensors, and each second contact piece records a Y-axis line coordinate data.

6. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 4, characterized in that, The second X-axis numerical axis detection assembly comprises a third mounting block arranged on the side of the sliding block of the third screw sliding table close to the cavity wall of the third accommodating cavity, the side of the third mounting block away from the sliding block of the third screw sliding table is recessed to form a third accommodating groove, a third electric connecting block is slidably arranged in the third accommodating groove, at least one third spring is arranged on the side of the third electric connecting block close to the groove bottom of the third accommodating groove and connected with the groove bottom of the third accommodating groove, the third spring is used for driving the third electric connecting block to extend out of the third accommodating groove on the side away from the groove bottom of the third accommodating groove, a plurality of third contact pieces for contacting the third electric connecting block are uniformly and interval arranged on the inner wall of the third accommodating cavity, the distribution direction of the plurality of third contact pieces is the same as the moving direction of the sliding block of the third screw sliding table, the interval between the two third contact pieces is equal to the interval between the two second multi-spectrum confocal sensors, and each third contact piece records an X-axis line coordinate data. The first Y-axis numerical axis detection assembly comprises a fourth mounting block arranged on the side of the sliding block of the fourth screw sliding table close to the cavity wall of the fourth accommodating cavity, the side of the fourth mounting block away from the sliding block of the fourth screw sliding table is recessed to form a fourth accommodating groove, a fourth electric connecting block is slidably arranged in the fourth accommodating groove, at least one fourth spring is arranged on the side of the fourth electric connecting block close to the groove bottom of the fourth accommodating groove and connected with the groove bottom of the fourth accommodating groove, the fourth spring is used for driving the fourth electric connecting block to extend out of the fourth accommodating groove on the side away from the groove bottom of the fourth accommodating groove, a plurality of fourth contact pieces for contacting the third electric connecting block are uniformly and interval arranged on the inner wall of the fourth accommodating cavity, the distribution direction of the plurality of fourth contact pieces is the same as the moving direction of the sliding block of the fourth screw sliding table, the interval between the two fourth contact pieces is equal to the interval between the two second multi-spectrum confocal sensors, and each fourth contact piece records a Y-axis line coordinate data.

7. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 1, characterized by the fact that, The acid pickling rust removal component includes a third box body arranged transversely and with an upward opening, a citric acid solution is arranged in the third box body, a fourth box body with a downward opening is arranged transversely above the third box body, a length direction edge of the fourth box body near one side of the third box body is hinged to a length direction edge of the third box body, the length direction of the third box body is the same as the length direction of the fourth box body, the length of the third box body is consistent with the length of the fourth box body, the length direction of the third box body is the same as the length direction of the first box body, a first nylon fiber layer is arranged on the inner wall bottom of the third box body, a first pressing plate is arranged on the bottom wall of the fourth box body, a second nylon fiber layer is arranged on the side of the first pressing plate away from the bottom wall of the fourth box body, the second nylon fiber layer is above the first nylon fiber layer, a first hydraulic cylinder is arranged on the side of the fourth box body away from the third box body, and the first hydraulic cylinder is used to drive the first pressing plate to move towards or away from the first nylon fiber layer, a third pressure sensor is arranged on the side of the first pressing plate near the second nylon fiber layer, and the fibers of the first nylon fiber layer and the fibers of the first nylon fiber layer are respectively attached with nano diamond sand; Both edges of the third box body in the width direction are recessed to form first material grooves for the steel belt to pass through, both edges of the fourth box body in the width direction are recessed to form second material grooves for the steel belt to pass through, and the first material grooves and the second material grooves cooperate to form a rectangular frame for the steel belt to pass through. A fifth accommodation cavity is formed in the bottom of the third box body, a heating pipe is arranged in the fifth accommodation cavity, and a plurality of heat conducting rods are arranged on the inner wall bottom of the third box body and extend into the fifth accommodation cavity.

8. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 1, characterized by the fact that, The cleaning component includes a fifth box body arranged transversely and with an upward opening, a sixth box body with a downward opening is arranged transversely above the fifth box body, a length direction edge of the sixth box body near one side of the fifth box body is hinged to a length direction edge of the fifth box body, the length direction of the fifth box body is the same as the length direction of the sixth box body, the length of the fifth box body is consistent with the length of the sixth box body, the length direction of the fifth box body is the same as the length direction of the first box body, a third nylon fiber layer is arranged on the inner wall bottom of the fifth box body, a second pressing plate is arranged on the bottom wall of the sixth box body, a fourth nylon fiber layer is arranged on the side of the second pressing plate away from the bottom wall of the sixth box body, the fourth nylon fiber layer is above the third nylon fiber layer, a second hydraulic cylinder is arranged on the side of the sixth box body away from the fifth box body, and the second hydraulic cylinder is used to drive the second pressing plate to move towards or away from the third nylon fiber layer, and a fourth pressure sensor is arranged on the side of the second pressing plate near the fourth nylon fiber layer. Both edges of the fifth box body in the width direction are recessed to form third material grooves for the steel belt to pass through, both edges of the sixth box body in the width direction are recessed to form fourth material grooves for the steel belt to pass through, and the third material grooves and the fourth material grooves cooperate to form a rectangular frame for the steel belt to pass through. The fifth box body is provided with a plurality of third high-pressure nozzles for spraying water towards the sixth box body, the sixth box body is provided with a plurality of fourth high-pressure nozzles for spraying water towards the fifth box body, the third high-pressure nozzles and the fourth high-pressure nozzles are used for spraying clean water, and the fifth box body is provided with a drain pipe.

9. The temper mill based on hydraulic AGC and six-high reversible construction according to claim 4, characterized in that, The dry ice particles have at least two particle sizes of 50 nm and 200 μm, the upper edge of the first box body is higher than the upper surface of the second cross bar, and the groove bottom of the first material groove is higher than the upper surface of the second cross bar.

10. A control method for a six-high reversing-structure calender based on hydraulic AGC, characterized by, The control method of the six-roller reversible flatting machine based on the hydraulic AGC and the six-roller reversible flatting machine based on the hydraulic AGC are used, and the control method comprises the following steps: S1. Steel strip surface rust detection and coordinate positioning When the steel strip passes through the first box body, the first multi-spectral confocal sensor array and the second multi-spectral confocal sensor array synchronously scan the upper and lower surfaces of the steel strip to identify the position of the rust; S2. Dry ice targeted rust removal control When the steel strip passes through the dry ice rust removal part, the lower surface rust removal control: control the first lead screw slide and the second lead screw slide to drive the first high-pressure nozzle to move to the rust coordinate position; open the first electromagnetic valve to spray 50 nm and 200 μm graded dry ice particles at a pressure of 0.5-1 MPa, and the spraying time is adaptively calculated according to the rust area; The upper surface rust removal control: synchronously control the third lead screw slide and the fourth lead screw slide of claim 4 to drive the second high-pressure nozzle to move to the corresponding coordinate; open the second electromagnetic valve, and increase the upper surface flow by 20% to compensate for the influence of gravity; S3. Lemon acid scrubbing control Start the heating pipe to heat the lemon acid solution to 45±1℃; Drive the first hydraulic cylinder to lower, so that the second nylon fiber layer contacts the steel strip, and the third pressure sensor feeds back the pressure value in real time; The steel strip passes through the scrubbing area at a speed of 5 m / min, and the nano-diamond fiber layer scrubs the surface; S4. High-pressure cleaning and residual control Start the third high-pressure nozzle and the fourth high-pressure nozzle to spray clean water at a pressure of 20 MPa; The second hydraulic cylinder drives the fourth nylon fiber layer to compress the steel belt, and the fourth pressure sensor maintains the pressure at 3-8 N / cm 2 ; The drain pipe discharges wastewater to the reverse osmosis system; S5. The cleaned steel strip is sent into the six-roller reversible flatting machine to perform the flatting operation on the steel strip, and the six-roller reversible flatting machine provides power for the movement of the steel strip.

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