Method and device for adjusting the working rolls of a rolling mill

Abstract

The application relates to a rolling mill technical field, in particular to a rolling mill work roll adjusting method and device. A rolling mill work roll adjusting method comprises the following steps: obtaining the roll shifting force data of the work roll; obtaining the roll shifting force according to the roll shifting force data and a preset roll shifting force relation; judging the work roll state according to the roll shifting force and a preset judging rule, and adjusting the work roll according to the work roll state. The technical scheme of the application effectively improves the quality of the rolling mill rolling product by adjusting the work roll.

Description

Technical Field

[0001] This invention relates to the field of rolling mill technology, and more specifically, to a method and apparatus for adjusting rolling mill work rolls. Background Technology

[0002] As an important piece of equipment for metal processing, rolling mills play a crucial role in steel production and processing. With the continuous advancement of industrialization and urbanization, the demand for metal products is constantly increasing, and the application prospects of rolling mills are becoming increasingly broad. Through the processing of rolling mills, metal sheets can be processed into products of different thicknesses and sizes, which can be used in fields such as construction, automobile manufacturing, and aerospace.

[0003] A rolling mill processes metal materials by extruding and deforming them through the rotation of the work rolls. However, improper installation, commissioning, or use can cause the work rolls to shift relative to their preset working positions, resulting in uneven rolling pressure and causing the dimensions and shape of the rolled products to deviate from the required specifications. Summary of the Invention

[0004] The problem solved by this invention is how to improve the quality of products rolled by a rolling mill.

[0005] To address the above problems, the present invention provides a method and apparatus for adjusting the work rolls of a rolling mill.

[0006] In a first aspect, the present invention provides a method for adjusting the work rolls of a rolling mill, comprising:

[0007] Obtain the roll force data of the work roll;

[0008] The roller force is obtained based on the roller force data and the preset roller force relationship;

[0009] The working roll state is determined based on the roller force and a preset discrimination rule, and the working roll is adjusted according to the working roll state.

[0010] Optionally, the roller force data includes first roller force data and second roller force data; the roller force includes first roller force and second roller force; the roller force relationship includes a preset first roller force relationship.

[0011] Force relationship and second roller force relationship; the step of obtaining the roller force based on the roller force data and the preset roller force relationship includes:

[0012] The first roller force is obtained based on the first roller force data and the first roller force relationship;

[0013] The second roller force is obtained based on the second roller force data and the relationship between the second roller forces.

[0014] The roller force is obtained based on the first roller force and the second roller force.

[0015] Optionally, the first skew roller force data includes the first skew roller cylinder piston pressure, the first skew roller cylinder piston force-bearing area, the first skew roller cylinder rod pressure, and the first skew roller cylinder rod force-bearing area; obtaining the first skew roller force based on the first skew roller force data and the first skew roller force relationship includes:

[0016] The first roller cylinder plug force is obtained by multiplying the first roller cylinder plug pressure and the first roller cylinder plug force-bearing area, and the first roller cylinder rod force is obtained by multiplying the first roller cylinder rod pressure and the first roller cylinder rod force-bearing area.

[0017] The first roller force is obtained by summing the first roller cylinder stop force and the first roller cylinder rod force.

[0018] Optionally, the second roller force data includes the second roller cylinder piston pressure, the second roller cylinder piston force-bearing area, the second roller cylinder rod pressure, and the second roller cylinder rod force-bearing area; obtaining the second roller force based on the second roller force data and the second roller force relationship includes:

[0019] The second roller cylinder plug force is obtained by multiplying the pressure of the second roller cylinder plug by the force-bearing area of ​​the second roller cylinder plug, and the second roller cylinder rod force is obtained by multiplying the pressure of the second roller cylinder rod by the force-bearing area of ​​the second roller cylinder rod.

[0020] The second roller force is obtained by summing the second roller cylinder stop force and the second roller cylinder rod force.

[0021] Optionally, the discrimination rule includes a preset first discrimination rule and a preset discrimination rule; the step of determining the state of the upper work roll based on the roller force and the preset discrimination rule includes:

[0022] When the skewed roller force meets the first discrimination rule, it is determined that the skewed roller cylinder of the work roll has a zero position deviation;

[0023] When the skewed roller force meets the second discrimination rule, it is determined that the working roller has shifted.

[0024] Optionally, the step of determining that the work roll's roller cylinder has a zero-position deviation when the roller force satisfies the first discrimination rule includes:

[0025] When the product of the first roller force and the second roller force is less than zero, or the difference between the first roller force and the second roller force is greater than a preset threshold, it is determined that the roller cylinder has generated a zero position deviation.

[0026] Optionally, the step of determining that the work roll has shifted when the skewed roller force satisfies the second discrimination rule includes:

[0027] When the product of the first roller force and the second roller force is greater than or equal to zero, and the difference between the first roller force and the second roller force is less than or equal to the preset threshold, it is determined that the work roller has shifted.

[0028] Optionally, adjusting the work roll according to the state of the work roll includes:

[0029] When the zero-position deviation occurs in the roller shifting cylinder of the work roll, the zero-position adjustment is performed on the roller shifting cylinder corresponding to the work roll;

[0030] When the work roll deviates, an adjustment amount is obtained based on the first roller force, the second roller force, and a preset adjustment relationship, and the shim corresponding to the work roll bearing seat is adjusted according to the adjustment amount.

[0031] Optionally, the adjustment relationship satisfies:

[0032]

[0033] Where A is the adjustment amount, F1 is the first roller force, F2 is the second roller force, and α is the adjustment coefficient.

[0034] Secondly, an electronic device including a memory and a processor;

[0035] The memory is used to store computer programs;

[0036] The processor is configured to implement the mill work roll adjustment method as described in the first aspect when executing the computer program.

[0037] The beneficial effects of the mill work roll adjustment method and device of the present invention are as follows: Based on the acquired roll shifting force data, relevant data information of the roll shifting cylinder on the corresponding side of the work roll can be obtained. Therefore, based on the roll shifting force data and the roll shifting force relationship, the roll shifting force of the corresponding roll shifting cylinder of the work roll can be obtained. Based on this roll shifting force, the force situation on the corresponding side of the work roll can be reflected. Thus, the position state of the work roll can be judged by analyzing the force situation of the work roll through the roll shifting force. Finally, based on the position state of the work roll and the corresponding data analysis results, the work roll is adjusted so that its working position is in a preset ideal position. This makes the rolling pressure of the mill more uniform, thereby obtaining rolled products that meet the required size and shape, effectively improving the quality of the rolled products of the mill, and ensuring the smooth transport and processing of materials, further improving the production efficiency of the mill. At the same time, the work roll is always in a reasonable working position, reducing wear between mill parts, lowering the failure rate, and improving the safety and service life of the mill. Attached Figure Description

[0038] Figure 1 This is a schematic flowchart of a rolling mill work roll adjustment method according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of a rolling mill according to an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the working roller state according to an embodiment of the present invention. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0042] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0043] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0044] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0045] like Figure 1 As shown, to solve the above-mentioned technical problems, this embodiment of the invention provides a method for adjusting the work rolls of a rolling mill, including:

[0046] S1, obtain the roll force data of the working roll.

[0047] Specifically, such as Figure 2 As shown, a rolling mill is equipped with four cylindrical solid rolls: one upper support roll (P1) and one lower support roll (P2), collectively referred to as support rolls, with a diameter ranging from 1450-1600 mm; and two middle work rolls: one upper work roll (Q1) and one lower work roll (Q2), collectively referred to as work rolls, with a diameter ranging from 760-850 mm. Each work roll has a bearing housing on both the operating and drive sides. Each bearing housing has a moving block on both the inlet and outlet sides that cooperates with the bearing housing; these are the inlet-side moving block Y2 and the outlet-side moving block Y1. The inlet side is where the rolled material enters the rolling mill, and the outlet side is where the rolled material exits the rolling mill. The position of the work roll can be restricted and adjusted by controlling the clearance between the work roll bearing housing and the moving block, specifically the clearance between the sliding plate on the side of the moving block closest to the work roll and the work roll. The clearance with the work roll can be adjusted by adjusting the shims at the sliding plate in the moving block. Zero-position adjustment can also be performed using a roll-shifting cylinder, ensuring the work roll is in the correct preset position during operation. The mill window size refers to the dimension between the inlet moving block Y2 and the outlet moving block Y1, 850mm on the drive side and 860mm on the operating side. A sliding plate is mounted on the side of the moving block closest to the work roll, and shims of varying thicknesses are installed between the moving block and the sliding plate. These shims are auxiliary parts used to adjust the mill window size; by increasing or decreasing the shims, the clearance between the sliding plate and the work roll at the corresponding position can be adjusted, thus adjusting the window size. Figure 3As shown, when adjusting the window using shims, the center lines of the rolling mill work rolls may intersect. Due to the offset of the work roll position, the center line L1 of the work roll intersects with the center line L2 of the support roll at its initial position in space. When the center lines L1 of the work rolls intersect, coupled with the rotation of the work roll, an axial force is generated. This force is ultimately transmitted to the roll shifting cylinder through the moving block and reflected in the pressure relay of the roll shifting cylinder. By monitoring the force of the roll shifting cylinder, the roll shifting force data on the corresponding side of the work roll can be obtained. Based on the analysis and processing of the roll shifting force data on the corresponding side, the stress and offset state of the work roll on the corresponding side can be determined, i.e., the state of the work roll. For example, the relevant pressure data and corresponding force-bearing area data of the roll shifting cylinder, as well as the relevant values ​​of the clearance between the work roll and the bearing housing, can be used to calculate the corresponding force of the roll shifting cylinder. This force is usually measured in tons, which facilitates equipment inspection and production operators to judge the equipment state based on specific values.

[0048] Furthermore, the dimensions of the mill window are measured, specifically the dimensions of the work roll bearing housing and the support roll bearing housing. Data is collected and shown in Table 1. Based on the preset mill window adjustment standards, the windows on the operating and drive sides of the work roll and support roll are adjusted. The window dimensions are... The 0.2 and 0.6 in mm represent the tolerance range for the window size. The shims are adjusted using moving blocks to ensure the spacing between the moving blocks on the operating or transmission side meets the standard value. For example... Figure 2 As shown, the working roller bearing housing and the support roller bearing housing slide plate are adjusted with shims to make the window size reach the standard value, so that the distance between moving block Y1 and moving block Y2 reaches the standard value, thereby making the gap between moving block Y1 and moving block Y2 and working roller Q1 meet the requirements.

[0049] Table 1 shows the mill window adjustment standards:

[0050] Table 1

[0051]

[0052] Furthermore, the roll shifting cylinder is a key component in the rolling mill used to control the opening and closing of the rolls and adjust the roll gap. It is usually composed of a hydraulic cylinder or a pneumatic cylinder. The roll shifting cylinder adjusts the rolling force and rolling gap during the rolling process by controlling the opening and closing of the rolls. Therefore, it is necessary to detect the position of the roll shifting cylinder. When the corresponding roll shifting cylinders are not on the same plane, zero-position adjustment is required to ensure that the roll shifting cylinder is in the correct position when stopped, so that it can start working accurately when started. Each work roll is divided into an operating side and a drive side. The operating side is the side that the operator faces when operating, and the drive side is the other end of the work roll that is close to the drive motor. By analyzing and processing the roll shifting force of the two roll shifting cylinders on any side of the work roll, the current state of the work roll can be accurately determined. Then, the work roll can be adjusted according to the state, so that the work roll always stays in the correct preset position during operation, thereby ensuring the quality of the rolled products of the rolling mill.

[0053] S2, the skew force is obtained based on the skew force data and the preset skew force relationship.

[0054] Specifically, based on the obtained roller force data for the working roller pair, the roller force data is processed through a pre-set roller force relationship to obtain the roller force of the roller cylinder corresponding to the working light. The roller force corresponding to the upper working roller and the roller force corresponding to the lower working roller can be obtained respectively based on the roller force data corresponding to the upper working roller and the lower working roller.

[0055] S3, determine the state of the work roll according to the roller force and the preset discrimination rule, and adjust the work roll according to the state of the work roll.

[0056] Specifically, based on the current rolling force corresponding to the working roll, the current state of the working roll is determined by the pre-set sheet rules, such as whether there is a deviation or whether the force is abnormal. Adjustments are then made according to the specific situation so that the working roll can be in a set reasonable position when it is working.

[0057] In this embodiment, based on the acquired roll shifting force data, relevant data information of the roll shifting cylinder on the corresponding side of the work roll can be obtained. Therefore, based on this roll shifting force data and the roll shifting force relationship, the roll shifting force of the corresponding roll shifting cylinder of the work roll can be obtained. This roll shifting force reflects the force situation on the corresponding side of the work roll. Thus, by analyzing the force situation of the work roll through the roll shifting force, the position state of the work roll can be determined. Finally, based on the position state of the work roll and the corresponding data analysis results, the work roll is adjusted so that its working position is in a preset ideal position. This allows for more uniform rolling pressure in the mill, resulting in rolled products that meet the required dimensions and shapes. This effectively improves the quality of the rolled products and ensures smooth material transport and processing, further increasing the mill's production efficiency. Simultaneously, keeping the work roll in a reasonable working position reduces wear between mill components, lowers the failure rate, and improves the safety and service life of the mill.

[0058] In an optional embodiment, the roller force data includes first roller force data and second roller force data; the roller force includes first roller force and second roller force; the roller force relationship includes a preset first roller force relationship and a preset roller force relationship; obtaining the roller force based on the roller force data and the preset roller force relationship includes:

[0059] The first roller force is obtained based on the first roller force data and the first roller force relationship;

[0060] The second roller force is obtained based on the second roller force data and the relationship between the second roller forces.

[0061] The roller force is obtained based on the first roller force and the second roller force.

[0062] For example, based on the roll force data of the two roll cylinders on the operating side of the rolling mill, where the roll cylinder on the inlet side is the first roll cylinder, the roll force corresponding to the first roll cylinder is the first roll force, and the corresponding roll force data is the first roll force data, the first roll force data is processed through the corresponding first roll force relationship to finally obtain the first roll force of the first roll cylinder. Similarly, the roll cylinder on the outlet side is the second roll cylinder, and the second roll force data is processed through the second roll force relationship to obtain the second roll force of the second roll cylinder. Finally, the overall roll force of the work roll is obtained based on the first roll force and the second roll force.

[0063] In this optional embodiment, the respective roller force is obtained through the roller force data of the two roller cylinders, thereby enabling the monitoring of the force on the work roll through the roller force. Furthermore, the current accurate position and force status of the work roll can be obtained by analyzing and processing the two roller forces of the work roll.

[0064] In an optional embodiment, the first skew roll force data includes the first skew roll cylinder piston pressure, the first skew roll cylinder piston force-bearing area, the first skew roll cylinder rod pressure, and the first skew roll cylinder rod force-bearing area; obtaining the first skew roll force based on the first skew roll force data and the first skew roll force relationship includes:

[0065] The first roller cylinder plug force is obtained by multiplying the first roller cylinder plug pressure and the first roller cylinder plug force-bearing area, and the first roller cylinder rod force is obtained by multiplying the first roller cylinder rod pressure and the first roller cylinder rod force-bearing area.

[0066] The first roller force is obtained by summing the first roller cylinder stop force and the first roller cylinder rod force.

[0067] Specifically, based on the inlet-side axial roll force data, namely the first axial roll cylinder pressure, the first axial roll cylinder force-bearing area, the first axial roll cylinder rod pressure, and the first axial roll cylinder rod force-bearing area in the first axial roll force data, the actual monitored pressure on the corresponding cylinder side is obtained by multiplying the pressure on the inlet-side axial roll cylinder cylinder side and the corresponding force-bearing area, i.e., the first axial roll cylinder pressure and the first axial roll cylinder rod force-bearing area. The first axial roll cylinder rod force on the inlet side is obtained by multiplying the first axial roll cylinder rod pressure and the first axial roll cylinder rod force-bearing area. The first axial roll cylinder cylinder force and the first axial roll cylinder rod force are added together to obtain the first axial roll force, which is the force transmitted from the work roll axial force to the axial roll cylinder through the moving block. Figure 3 As shown, the feeding direction S of the rolled material entering the mill is selected as the positive direction, that is, the direction from the inlet side to the outlet side of the rolled material is the positive direction, and vice versa. Therefore, when the first roller cylinder blocking force on the inlet side points to the outlet side, the first roller cylinder blocking force is positive, and vice versa. Similarly, the positive or negative value of the force is determined according to the direction of the first roller cylinder rod force. Finally, the first roller force is obtained by adding the first roller cylinder blocking force and the first roller cylinder rod force with direction. At the same time, the direction of the first roller force can be determined according to the positive or negative value of the obtained first roller force. For example, if the first roller cylinder blocking force is 10t, it means that the first roller cylinder blocking force is along the feeding direction of the rolled material, while the first roller cylinder rod force is -20t, it means that the first roller rod blocking force is opposite to the first roller cylinder blocking force. Thus, the first roller force is 10t + (-20t) = -10t, that is, the current direction of the first roller force is opposite to the feeding direction S of the rolled material.

[0068] In this optional embodiment, the corresponding first roller cylinder plug force is obtained by the plug side pressure of the first roller cylinder and the corresponding force-bearing area, and the corresponding first roller cylinder rod force is obtained by the rod side pressure and the corresponding force-bearing area. Thus, by adding the above two forces, the first roller force at the inlet is obtained. Based on the first roller force, the force situation of the working roller at the inlet side position can be accurately determined, and the corresponding force direction can be determined based on the specific value. Thus, it is possible to accurately analyze whether the working roller at the current position is unevenly stressed and has shifted.

[0069] In an optional embodiment, the second roller force data includes the second roller cylinder piston pressure, the second roller cylinder piston force-bearing area, the second roller cylinder rod pressure, and the second roller cylinder rod force-bearing area; obtaining the second roller force based on the second roller force data and the second roller force relationship includes:

[0070] The second roller cylinder plug force is obtained by multiplying the pressure of the second roller cylinder plug by the force-bearing area of ​​the second roller cylinder plug, and the second roller cylinder rod force is obtained by multiplying the pressure of the second roller cylinder rod by the force-bearing area of ​​the second roller cylinder rod.

[0071] The second roller force is obtained by summing the second roller cylinder stop force and the second roller cylinder rod force.

[0072] Specifically, the second spur roll force is the spur roll force corresponding to the spur roll cylinder on the exit side of the work roll. The second spur roll cylinder plug force on the exit side is obtained by multiplying the pressure on the second spur roll cylinder plug side and the force-bearing area on the second spur roll cylinder plug side. The second spur roll cylinder rod force on the second spur roll cylinder rod side is obtained by multiplying the pressure on the second spur roll cylinder rod side and the force-bearing area on the second spur roll cylinder rod side. Similarly, when the force on the second spur roll cylinder plug side is in the same direction as the feeding direction of the rolled material into the mill, it is taken as positive; when the direction is opposite, it is taken as negative. Therefore, the method for determining the direction of the second spur roll cylinder plug side force and rod side force is the same as the method for determining the first spur roll cylinder. Finally, the second spur roll force with direction is obtained by the sum of the second spur roll cylinder plug force and the second spur roll cylinder rod force.

[0073] In this optional embodiment, since the axial force of the working roll can be transmitted to the roller cylinder through the moving block, the force situation of the working roll at the corresponding exit side position can be accurately determined based on the obtained second roller force, and the corresponding force direction can be determined based on the specific value. Thus, it is possible to accurately analyze whether the working roll at the current position is under uneven force at the exit side, and take corresponding actions according to the specific situation. This can effectively prevent the working roll from shifting due to uneven force on the working roll.

[0074] In an optional embodiment, the discrimination rule includes a preset first discrimination rule and a preset discrimination rule; the step of determining the state of the upper work roll based on the upward roller force and the preset discrimination rule includes:

[0075] When the skewed roller force meets the first discrimination rule, it is determined that the skewed roller cylinder of the work roll has a zero position deviation;

[0076] When the skewed roller force meets the second discrimination rule, it is determined that the working roller has shifted.

[0077] In an optional embodiment, the step of determining that the work roll's roller displacement cylinder has a zero-position deviation when the roller displacement force satisfies the first discrimination rule includes:

[0078] When the product of the first roller force and the second roller force is less than zero, or the difference between the first roller force and the second roller force is greater than a preset threshold, it is determined that the roller cylinder has generated a zero position deviation.

[0079] Specifically, since the signs of the first and second axial roll forces determine their directions, when the product of the first and second axial roll forces on the corresponding side of a work roll is less than zero, it indicates that the directions of the first and second axial roll forces on that work roll are opposite. That is, the corresponding side of the work roll will be subjected to two forces in opposite directions. Therefore, it is necessary to adjust them to zero position through a pre-set adjustment rule so that the zero positions of the two axial roll cylinders are at the same plane. In this way, the two axial roll cylinders can start moving simultaneously during operation, avoiding conflicts between different positions. Zero position adjustment can ensure the working synchronization of the axial roll cylinders, thereby improving the mill's production efficiency and the quality of rolled products. It can also accurately monitor the axial force of the work roll, avoiding the influence of different positions on the accuracy of the monitoring results.

[0080] Furthermore, when the difference between the first and second roller forces exceeds a preset threshold, it also indicates that the two roller cylinders on this side need to be zeroed out. This suggests a significant deviation in the data obtained from the roller cylinders. For example, if the first roller force is 10t, the second roller force is 30t, and the preset threshold is 10t, and the difference between the first and second roller forces is 20t, which is greater than the preset threshold of 10t, then the difference exceeds the preset tolerance range and zeroing is also required. Therefore, when the difference in roller forces between the two roller cylinders is large and exceeds the preset threshold... Zero-position adjustment can prevent damage caused by uneven stress on rolling mill components, thereby improving the stability and efficiency of the rolling mill. Furthermore, if there is a large difference between the forces of the first and second skewers, it indicates uneven stress on the corresponding sides of the work rolls, which may lead to work roll misalignment. This can result in unevenness during product processing, affecting product quality. By performing zero-position adjustment, the zero positions of the two skewer cylinders can be aligned on the same plane, ensuring coordinated operation, avoiding unnecessary stress and pressure, guaranteeing the stable and accurate position of the work rolls, and effectively improving the quality of the rolled products.

[0081] In an optional embodiment, determining that the work roll has shifted when the skewed roll force satisfies the second discrimination rule includes:

[0082] When the product of the first roller force and the second roller force is greater than or equal to zero, and the difference between the first roller force and the second roller force is less than or equal to the preset threshold, it is determined that the work roller has shifted.

[0083] Specifically, the offset and rotation of the work roll generate axial force, which is transmitted to the roller shifting cylinders via the moving blocks on the corresponding operating and transmission sides of the work roll. By detecting the pressure on the plug and rod sides of the roller shifting cylinders, the corresponding axial force data can be obtained, thus determining the roller shifting forces of the two roller shifting cylinders on the corresponding side of the work roll—the first roller shifting force and the second roller shifting force. Based on these forces, the offset state of the work roll can be analyzed. The roller shifting forces are typically precisely controlled within a specific range to ensure normal equipment operation and product quality; the roller shifting force is generally not zero. Instead, adjustments and controls are made based on specific production needs and equipment design. Normally, the first and second roller forces are not zero. When the first and second roller forces are equal to zero, one scenario is that both the first and second roller forces are zero, indicating that the work roll on that side has not generated axial force due to the offset, meaning that no roller force is generated on the corresponding side of the work roll. Another scenario is that one of the first and second roller forces is zero, indicating that the work roll can detect the axial force generated due to the offset, and the actual force direction on the corresponding side of the work roll is the same as the direction of the non-zero roller force.

[0084] Furthermore, specifically analyzing the case where the product of the first and second roller forces is greater than zero, i.e., when the directions of the first and second roller forces are the same, and simultaneously the difference between the first and second roller forces is less than or equal to a preset threshold, it indicates that the corresponding side of the work roll (the operating side or transmission side where the two roller cylinders are located) experiences a deviation of the two roller forces that meets the preset requirements. When both the first and second roller forces are positive, it indicates that the cylinder piston side pressure of the two roller cylinders is large, i.e., the direction of the two roller forces is the same as the feeding direction S, thus causing the corresponding side of the work roll to experience the aforementioned first and second roller forces. The force of the shifting rollers deviates, and the direction of this deviation is consistent with the directions of the first and second shifting roller forces. The corresponding side of the work roll shifts along the feeding direction S. The work roll includes an operating side and a drive side. The force on the corresponding side can be determined by the two shifting roller forces. If the force on the corresponding side of the work roll meets the above-mentioned judgment rule, it indicates that the work roll may have shifted. Adjustments are then made according to the force on the corresponding side to ensure the work roll operates in the correct position. Simultaneously, the work roll may also experience the same shift on both the operating and drive sides. Similarly, adjustments can be made according to the force on the corresponding sides using the same method. Figure 3 As shown, the right side of the work roll L1 is the operating side. The offset direction of the operating side is the same as the feeding direction S of the rolled material. The transmission side on the other side is subjected to the roller force opposite to the feeding direction S. Therefore, the offset direction of the other side of the work roll L1 is opposite to the feeding direction S, thus presenting the offset state of L1 in the figure.

[0085] In this optional embodiment, if the first and second roll forces on the corresponding side of the work roll meet the corresponding discrimination rules, it is determined that the work roll has deviated. Adjustments can then be made according to the specific deviance to ensure that the work roll works in the correct position, thereby ensuring that the work roll rolls uniformly roll the material and effectively ensuring the quality of the material rolled by the work roll.

[0086] In an optional embodiment, adjusting the work roll according to the work roll state includes:

[0087] When the zero-position deviation occurs in the roller shifting cylinder of the work roll, the zero-position adjustment is performed on the roller shifting cylinder corresponding to the work roll;

[0088] When the work roll deviates, an adjustment amount is obtained based on the first roller force, the second roller force, and a preset adjustment relationship, and the shim corresponding to the work roll bearing seat is adjusted according to the adjustment amount.

[0089] In an optional embodiment, the adjustment relationship satisfies:

[0090]

[0091] Where A is the adjustment amount, F1 is the first roller force, F2 is the second roller force, and α is the adjustment coefficient.

[0092] Specifically, when the corresponding discrimination rule determines that the two shifting roller cylinders on the corresponding side of the work roll have a zero-position deviation, the two shifting roller cylinders are adjusted to zero position according to a preset adjustment method. For example, the shifting roller cylinders are adjusted to a preset adjustment position so that the zero positions of the two shifting roller cylinders are on the same plane. When the work roll is determined to be offset, the adjustment amount corresponding to the offset is obtained through the adjustment relationship based on the specific first and second shifting roller forces. This adjustment amount is the adjustment amount of the shim in the moving block of the corresponding bearing seat, that is, the shim thickness that needs to be adjusted. Therefore, the shim at the corresponding position is adjusted according to this adjustment amount, such as... Figure 2 As shown, for example, based on the offset of the working roller on this side, it is determined that the working roller Q1 and the moving block Y1 have a gap due to the offset of the working roller. Therefore, by adjusting the thickness of the shim in the moving block Y1, the gap between the working roller Q1 and the moving block Y1 on the operating side is changed. Thus, the displacement of the working roller can be limited by the moving blocks Y1 and Y2, so that the working roller always stays in the correct working position. Similarly, the same treatment can be performed on the drive side of the working roller Q1. By limiting the position of the drive side of the working roller, the working roller can be adjusted, so that the working roller ultimately works in the correct working position.

[0093] Furthermore, when the combined force of the first and second roller forces is less than or equal to a preset combined force threshold, it is determined that the first and second roller forces meet the requirements, meaning they will not affect the quality of the rolled product. However, when the combined force of the first and second roller forces is less than or equal to the preset combined force threshold, it will affect the quality of the rolled product, requiring adjustment using the above method to ensure that the work roll is in the correct working position, thus guaranteeing the quality of the rolled product, and simultaneously generating an alarm prompt.

[0094] In this optional embodiment, the work roll is adjusted according to its state and the corresponding analysis and processing data, so that the work roll always works stably in the correct working position that meets the requirements, ensuring the quality of the product rolled by the work roll, improving the mill efficiency, and avoiding wear of equipment parts caused by the axial force of the work roll, thereby improving the stability and safety of the mill operation.

[0095] An electronic device provided in this invention includes a memory and a processor;

[0096] The memory is used to store computer programs;

[0097] The processor is configured to implement the mill work roll adjustment method as described above when executing the computer program.

[0098] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. In this application, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention according to actual needs. Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units can be implemented in hardware or as software functional units.

[0099] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A method for adjusting the work rolls of a rolling mill, characterized in that, By analyzing the lateral force of the two lateral cylinders on either side of the work roll, the current state of the work roll can be accurately determined, and adjustments can be made to the work roll based on this state, including: Obtain the roll force data of the work roll; The skewed roller force is obtained based on the skewed roller force data and the preset skewed roller force relationship. The skewed roller force includes a first skewed roller force and a second skewed roller force. The first skewed roller force can accurately determine the force situation of the working roller at the inlet side position, and the second skewed roller force can accurately determine the force situation of the working roller at the outlet side position. The working roll state is determined based on the roller force and the preset discrimination rule, and the working roll is adjusted according to the working roll state. The discrimination rules include a preset first discrimination rule and a preset second discrimination rule; The step of determining the state of the upper work roll based on the skewed roll force and a preset discrimination rule includes: When the skewed roller force meets the first discrimination rule, it is determined that the skewed roller cylinder of the work roll has a zero position deviation; When the force of the shifting roller meets the second discrimination rule, it is determined that the working roller has shifted. When the skewed roller force satisfies the first discrimination rule, it is determined that the skewed roller cylinder of the work roll has a zero-position deviation, including: When the product of the first roller force and the second roller force is less than zero, or the difference between the first roller force and the second roller force is greater than a preset threshold, it is determined that the roller cylinder has generated a zero position deviation. When the skewed roller force satisfies the second discrimination rule, it is determined that the work roller has shifted, including: When the product of the first roller force and the second roller force is greater than or equal to zero, and the difference between the first roller force and the second roller force is less than or equal to the preset threshold, it is determined that the work roller has shifted.

2. The method for adjusting the work rolls of a rolling mill according to claim 1, characterized in that, The roller force data includes first roller force data and second roller force data; the roller force relationship includes a preset first roller force relationship and second roller force relationship; The step of obtaining the roller force based on the roller force data and the preset roller force relationship includes: The first roller force is obtained based on the first roller force data and the first roller force relationship; The second roller force is obtained based on the second roller force data and the relationship between the second roller forces. The roller force is obtained based on the first roller force and the second roller force.

3. The method for adjusting the work rolls of a rolling mill according to claim 2, characterized in that, The first roller force data includes the first roller cylinder piston pressure, the first roller cylinder piston force-bearing area, the first roller cylinder rod pressure, and the first roller cylinder rod force-bearing area; obtaining the first roller force based on the first roller force data and the first roller force relationship includes: The first roller cylinder plug force is obtained by multiplying the first roller cylinder plug pressure and the first roller cylinder plug force-bearing area, and the first roller cylinder rod force is obtained by multiplying the first roller cylinder rod pressure and the first roller cylinder rod force-bearing area. The first roller force is obtained by summing the first roller cylinder stop force and the first roller cylinder rod force.

4. The method for adjusting the work rolls of a rolling mill according to claim 2, characterized in that, The second roller force data includes the second roller cylinder piston pressure, the second roller cylinder piston force area, the second roller cylinder rod pressure, and the second roller cylinder rod force area; The step of obtaining the second roller force based on the second roller force data and the relationship between the second roller forces includes: The second roller cylinder plug force is obtained by multiplying the pressure of the second roller cylinder plug by the force-bearing area of ​​the second roller cylinder plug, and the second roller cylinder rod force is obtained by multiplying the pressure of the second roller cylinder rod by the force-bearing area of ​​the second roller cylinder rod. The second roller force is obtained by summing the second roller cylinder stop force and the second roller cylinder rod force.

5. The method for adjusting the work rolls of a rolling mill according to claim 1, characterized in that, The step of adjusting the work roll according to the state of the work roll includes: When the zero-position deviation occurs in the roller shifting cylinder of the work roll, the zero-position adjustment is performed on the roller shifting cylinder corresponding to the work roll; When the work roll deviates, an adjustment amount is obtained based on the first roller force, the second roller force, and a preset adjustment relationship, and the shim corresponding to the work roll bearing seat is adjusted according to the adjustment amount.

6. An electronic device, characterized in that, Including memory and processor; The memory is used to store computer programs; The processor is configured to implement the mill work roll adjustment method as described in any one of claims 1 to 5 when executing the computer program.

Images