A method, system, apparatus, and medium for rail bottom width adjustment

Abstract

The present application relates to the field of steel rolling, and proposes a rail bottom width adjustment method, system, device and medium, the method comprising: obtaining historical data of rail production through VR simulation, and constructing an expert experience model based on the historical data; integrating the expert experience model in a simulation platform, and simulating the working condition of rail adjustment; in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being greater than the head thickness, adjusting the horizontal roller and the bottom vertical roller of the rolling mill; in response to the deviation of the bottom width exceeding a preset value, and the upper leg tip thickness and the lower leg tip thickness being less than the head thickness, adjusting the horizontal roller or the bottom vertical roller of the rolling mill. The present application aims at the deviation problem of the rail bottom width, realizes high-precision control of the rail bottom width, ensures the stability of the rolling process, and significantly improves the control precision of the rail bottom width; improves the timeliness of adjustment, and ensures the standardization of steel rolling adjustment; not only solves the problem of low calculation efficiency in manual adjustment, but also avoids errors caused by human factors.

Description

Technical Field

[0001] This invention relates to the field of steel rolling, and more particularly to a method, system, equipment, and medium for adjusting the bottom width of steel rails. Background Technology

[0002] Heavy rail production is a crucial part of railway construction, affecting both safety and operational efficiency. Based on the information provided, modern heavy rail production primarily employs two rolling processes: the traditional two-roll rolling process and the advanced four-roll universal rolling process.

[0003] 1. Two-roller mode: This is an older production method. Because the heavy rails produced by this method cannot meet the high standards of modern high-speed heavy rails in terms of surface quality, cross-sectional dimensional accuracy, and rail crown fullness, it has been gradually replaced by more advanced technologies.

[0004] 2. Four-roll universal mill: This mode is the mainstream choice for modern heavy rail production lines. It achieves precise rolling of heavy rails through a combination of multiple stands. Specifically, the rolling process of the universal mill includes the following steps:

[0005] Billet rolling mill: First, the billet is initially rolled by two billet rolling mills to form a rolled piece with a preliminary guide shape, and to establish the proportional relationship between the beginning, the web and the bottom.

[0006] Universal mill units: Universal mill units typically consist of three or five stands, with the five-stand configuration offering higher control precision. Universal mill units include: universal roughing mill (UR1), edging mill (E1), universal intermediate mill (UR2), edging mill (E2), and universal finishing mill (UF).

[0007] Multi-pass rolling: Through continuous rolling on these stands, finished heavy rails that meet the standards are finally formed.

[0008] Flexibility of adjustment: Compared with the traditional roll pass method, the universal rolling method has greater flexibility in adjusting the head width and bottom width. They can be adjusted separately and in a variety of ways.

[0009] The main advantage of the universal rolling method is that the rolling of the rail head and rail bottom is completed by the vertical rolls pressing down directly during the rolling process. This makes the rolling direction the same as the rotation direction of the rolls, thereby improving the rolling efficiency and quality.

[0010] In summary, the four-roll universal mode has become the preferred method for modern heavy rail production due to its high precision and flexibility.

[0011] The rail base width plays a crucial role in railway track design. It directly affects the track's load-bearing capacity and is essential for ensuring smooth and safe train operation. Wider rails provide a larger contact area and stronger support, enabling them to withstand heavier train loads and accommodate more frequent train passages, thus significantly improving the track's load-bearing capacity.

[0012] Furthermore, increasing the rail base width can effectively improve track stability. A wider base design helps reduce the bending and deformation of the track caused by train loads, lowering the risk of derailment, which is crucial for ensuring the safety of railway transportation.

[0013] However, a wider rail base means that more steel is needed to manufacture the rail. Wide-base rails may also require more robust sleepers, fasteners, and other supporting facilities, which will increase material costs and construction difficulty.

[0014] Therefore, precise adjustment of the bottom width is a technical challenge in the rail production process. Different adjustment methods and parameters have overlapping effects, and the accuracy of these parameters is crucial to the analysis results of equipment and specifications. These factors can lead to deviations between the analysis results and the actual deformation patterns and adjustment methods. Summary of the Invention

[0015] To achieve the above objectives, this invention proposes a method for adjusting the bottom width of a rail, comprising:

[0016] Historical data on rail production was obtained through VR simulation, and an expert experience model was built based on the historical data.

[0017] Integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment;

[0018] If the deviation of the bottom width exceeds the preset value, and the thickness of the upper leg tip and the lower leg tip are greater than the head thickness, then adjust the horizontal roll and the bottom vertical roll of the rolling mill.

[0019] If the deviation of the bottom width exceeds the preset value, and the thickness of the upper and lower leg tips is less than the head thickness, then adjust the horizontal roll or the bottom vertical roll of the rolling mill.

[0020] In some embodiments, in response to a deviation in bottom width exceeding a preset value, and the thickness of the upper and lower leg tips being greater than the head thickness, the step of adjusting the horizontal roll and bottom vertical roll of the rolling mill includes:

[0021] In response to the deviation of the bottom width exceeding a first preset value, the horizontal rolls of the rolling mill are adjusted based on the first scheme;

[0022] In response to the deviation of the bottom width exceeding the second preset value, the horizontal roll and the bottom vertical roll of the rolling mill are adjusted based on the second scheme;

[0023] In response to the deviation of the bottom width exceeding the third preset value, the horizontal roll and the bottom vertical roll of the rolling mill are adjusted based on the third scheme.

[0024] In some embodiments, in response to a deviation in bottom width exceeding a preset value, and the thickness of the upper and lower leg tips being less than the head thickness, the step of adjusting the horizontal roll or bottom vertical roll of the rolling mill includes:

[0025] In response to the deviation of the bottom width exceeding the fourth preset value, the horizontal rolls of the rolling mill are adjusted based on the fourth scheme;

[0026] In response to the deviation of the bottom width exceeding the fifth preset value, the bottom vertical roll of the mill is adjusted based on the fifth scheme;

[0027] In response to the deviation of the bottom width exceeding the sixth preset value, the bottom vertical roll of the mill is adjusted based on the sixth scheme.

[0028] In some embodiments, the step of acquiring historical data on rail production through VR simulation includes:

[0029] Data on the rails and their surrounding environment is obtained, and VR technology is used to simulate a virtual rail environment.

[0030] In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results during the simulation are recorded as historical data.

[0031] In some embodiments, the step of acquiring historical data and constructing an expert experience model includes:

[0032] The historical base width specifications of each work group were extracted from historical data;

[0033] Analyze the distribution of historical bottom width specification deviations, rank them according to the control effect of historical bottom width specifications, and identify the work groups whose ranking exceeds the threshold as expert knowledge.

[0034] An expert experience model is constructed based on the distribution of deviation values ​​and expert knowledge.

[0035] In some embodiments, the method further includes:

[0036] Based on different specification deviation values, corresponding adjustment schemes are established in the expert experience model.

[0037] In some embodiments, in response to the simultaneous excess of the upper leg tip thickness, lower leg tip thickness, and head thickness, the percentages of excess of the upper leg tip thickness, lower leg tip thickness, and head thickness are compared, and the portion with the larger excess percentage is adjusted first.

[0038] This invention proposes a system for adjusting the bottom width of a rail, comprising:

[0039] The construction unit is configured to acquire historical data on rail production through VR simulation and to build an expert experience model based on the historical data.

[0040] The simulation unit is configured to integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment.

[0041] The first adjustment unit is configured to adjust the horizontal roll and bottom vertical roll of the rolling mill in response to a deviation in bottom width exceeding a preset value and a thickness of upper and lower leg tips greater than head thickness.

[0042] The second adjustment unit is configured to adjust the mill horizontal roll or bottom vertical roll in response to a deviation in bottom width exceeding a preset value and the thickness of the upper and lower leg tips being less than the head thickness.

[0043] This invention proposes a computer device, comprising:

[0044] At least one processor; and a memory storing a computer program executable on the processor, wherein the processor, when executing the program, performs the steps of the method for adjusting the bottom width of a rail.

[0045] The present invention proposes a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the method for adjusting the bottom width of a rail.

[0046] The present invention has at least the following beneficial technical effects:

[0047] This invention proposes a method, system, equipment, and medium for adjusting the bottom width of rails. The method includes: acquiring historical data of rail production through VR simulation and constructing an expert experience model based on the historical data; integrating the expert experience model in the simulation platform and simulating the working conditions of rail adjustment; adjusting the horizontal rolls and bottom vertical rolls of the rolling mill in response to the bottom width deviation exceeding a preset value and the thickness of the upper and lower leg tips being greater than the head thickness; and adjusting the horizontal rolls or bottom vertical rolls of the rolling mill in response to the bottom width deviation exceeding a preset value and the thickness of the upper and lower leg tips being less than the head thickness.

[0048] This invention addresses the issue of rail base width deviation, achieving high-precision control of rail base width, ensuring the stability of the rolling process, and significantly improving the control accuracy of rail base width. It also enhances the timeliness of adjustments, ensuring the standardization of rolling adjustments. This not only solves the problem of low calculation efficiency in manual adjustments but also avoids errors caused by human factors. Furthermore, it effectively reduces fluctuations in product base width specifications between work teams, thereby improving the consistency and reliability of the entire production process. Through precise calculation and optimization, it provides a more scientific and systematic method for rail production. It not only improves production efficiency but also ensures high product quality standards. This ensures that all rails meet stringent quality standards, thus providing a solid foundation for the long-term stable operation of railways. Attached Figure Description

[0049] 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 embodiments can be obtained based on these drawings without creative effort.

[0050] Figure 1 A flowchart of a method for adjusting the bottom width of a rail provided by the present invention;

[0051] Figure 2 A system module diagram for adjusting the bottom width of a rail provided by the present invention;

[0052] Figure 3 A flowchart illustrating an embodiment of a method for adjusting the bottom width of a rail provided by the present invention;

[0053] Figure 4 A universal method for rolling rail profiles is provided as an embodiment of a method for adjusting the bottom width of a rail according to the present invention.

[0054] Figure 5 A schematic diagram of a rail cross-section and bottom width, representing an embodiment of a method for adjusting the bottom width of a rail provided by the present invention;

[0055] Figure 6 A schematic diagram of the hole type for adjusting the bottom width of a 60kg / m rail, exceeding the specification by 0.1mm~0.2mm, according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention. Figure 1 ;

[0056] Figure 7 A schematic diagram of the adjustment scheme and hole type for a 60kg / m rail with a bottom width less than 0.2mm~0.4mm, according to an embodiment of the method for adjusting the bottom width of a rail provided by the present invention. Figure 1 ;

[0057] Figure 8 A schematic diagram of the hole type for adjusting the bottom width of a 60kg / m rail exceeding the specification by 0.5mm~0.6mm, as provided in this invention, according to an embodiment of the method for adjusting the bottom width of a rail. Figure 1 ;

[0058] Figure 9 A schematic diagram of the hole type for adjusting a rail bottom width exceeding the specification of 60kg / m by 0.1mm, as provided in this invention, according to an embodiment of the method for adjusting the bottom width of a rail. Figure 2 ;

[0059] Figure 10 A schematic diagram of the adjustment scheme and hole type for a 60kg / m rail with a bottom width less than 0.2mm~0.3mm, according to an embodiment of the rail bottom width adjustment method provided by the present invention. Figure 2 ;

[0060] Figure 11 A schematic diagram of the hole type for adjusting the bottom width of a 60kg / m rail exceeding the specification by 0.4mm~0.6mm, as provided in this invention, according to an embodiment of the method for adjusting the bottom width of a rail. Figure 2 ;

[0061] Figure 12 This is a schematic diagram of sampling data before adjustment, representing an embodiment of a method for adjusting the bottom width of a rail provided by the present invention.

[0062] Figure 13 This is a sampled data diagram showing the adjusted rail bottom width as an embodiment of the method for adjusting the rail bottom width provided by the present invention.

[0063] Figure 14 A schematic diagram of the structure of an embodiment of the computer device provided by the present invention;

[0064] Figure 15 A schematic diagram of an embodiment of the computer-readable storage medium provided by the present invention;

[0065] Figure 16 A schematic diagram of the rail cross-section and rail crown height, representing an embodiment of a method for adjusting the bottom width of a rail provided by the present invention;

[0066] Figure 17 A schematic diagram of the rail cross-section and web cavity of an embodiment of a method for adjusting the bottom width of a rail provided by the present invention;

[0067] Figure 18 A schematic diagram of a rail cross-section and upper leg tip, representing an embodiment of a method for adjusting the bottom width of a rail provided by the present invention;

[0068] Figure 19 This is a schematic diagram of the rail cross-section and lower leg tip, representing an embodiment of a method for adjusting the bottom width of a rail provided by the present invention. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0070] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0071] This invention proposes a method for adjusting the bottom width of rails; please refer to [link / reference]. Figure 1 , Figure 3 , Figure 4 and Figure 5 ,include:

[0072] To achieve the above objectives, this invention proposes a method for adjusting the bottom width of rails. Please refer to [link / reference]. Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 16 , Figure 17 , Figure 18 and Figure 19 ,include:

[0073] S1: Obtain historical data on rail production through VR simulation, and build an expert experience model based on the historical data;

[0074] S2: Integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment;

[0075] S3: In response to the deviation of the bottom width exceeding the preset value, and the thickness of the upper leg tip and the lower leg tip being greater than the head thickness, adjust the horizontal roll and the bottom vertical roll of the rolling mill;

[0076] S4: In response to the deviation of the bottom width exceeding the preset value, and the thickness of the upper leg tip and the lower leg tip being less than the head thickness, adjust the mill horizontal roll or the bottom vertical roll.

[0077] Universal rolling process for rail profiles, such as Figure 4 As shown: Production line: Semi-universal production line, equipment UR1 (universal rolling mill), E1, UR2 (universal rolling mill), E2, UF (semi-universal rolling mill). Production status adjustment: Steel output is normal, rolling force is normal, temperature is normal, rolling speed is reasonable, and temperature is normal.

[0078] Figure 5 , Figure 16 , Figure 17 , Figure 18 and Figure 19Different parameters of the rail cross-section are shown. Figure 5 shows the bottom width, Figure 16 For the track crown, Figure 17 It is the abdominal cavity. Figure 18 For the upper leg tips and head thickness. Figure 19 For the lower leg tip.

[0079] Rail cross-section as Figure 5 As shown, the bottom width is a crucial specification of the rail. In actual production, there are two approaches to adjusting the bottom width of the rail. The first approach is to control the bottom width by adjusting the horizontal rolls of a two-roll mill when the rail has a normal metal distribution. The second approach is to adjust the amount of metal variation at the bottom of the rail using the bottom vertical rolls of a universal / semi-universal mill, thereby controlling the bottom width.

[0080] The main process of this invention is as follows:

[0081] Data Collection and Analysis: By statistically analyzing production control data and expert experience data from each work team, a historical baseline specification control ranking table was compiled. The work team with the best control performance was selected as the target for expert knowledge extraction.

[0082] Empirical model construction: Based on specification deviation values ​​and expert experience, an optimal adjustment scheme is formed, and an empirical data model for bottom width specification control is established and integrated into the simulation platform.

[0083] Adjustment scheme library establishment: For different specification deviation values, corresponding adjustment schemes are established in the experience model library to ensure the diversity and adaptability of the schemes.

[0084] Practical Application: In actual production, online profile scanners automatically measure the actual specifications of rails. The deviations between the actual specifications and standard values ​​are compared, and appropriate adjustment schemes are retrieved from an experience-based model library.

[0085] Parameter adjustment and control: The adjustment scheme includes the necessary adjustment parameters, which are sent to the PLC (Programmable Logic Controller) via data communication to realize the automatic adjustment of the frame parameters and ensure that the bottom width of the finished product meets the control requirements.

[0086] The adjustment method of the present invention is as follows:

[0087] Specification parameters settings: Set the actual measured rail bottom width as H, head height as X, and leg height as Z; the standard rail bottom width is H0, head height is X0, and leg height is Z0.

[0088] Automatic Measurement and Judgment: The system uses an online contour scanner to automatically measure the finished product specifications. The system automatically judges the dimensional deviation between the bottom width H and the standard value H0. Does it exceed the control deviation ΔH0? If it does, adjustment is required.

[0089] Adjustment Location Determination: When the bottom width H exceeds the deviation ΔH0, the system automatically determines the main factors affecting the bottom width based on the head and leg heights. The mill section requiring adjustment is determined based on the head and leg height deviations ΔX and ΔZ.

[0090] Adjustment strategy and priorities: If both head and leg height deviations exceed the control deviation simultaneously, the system will adjust the settings based on the percentage of deviation. Compare the percentages of head and leg height exceeding the limit, and prioritize adjusting the specifications with the larger excess percentage.

[0091] Roll gap adjustment amount determination: In the empirical model library, according to different levels of bottom width deviation range, select the corresponding frame parameters for adjustment to achieve precise control.

[0092] This invention, by collecting and analyzing historical data on rail production, reveals the patterns and trends in rail base width variations. Based on this data, an expert experience model can more accurately predict and assess rail base width changes under different operating conditions. Integrating this expert experience model into a simulation platform allows for the simulation of rail adjustment processes under various conditions. Through simulation, adjustment strategies can be optimized, reducing trial-and-error costs in actual operation and improving adjustment accuracy and efficiency.

[0093] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 8 If the deviation of the bottom width exceeds the preset value, and the thickness of the upper and lower leg tips is greater than the head thickness, the steps for adjusting the horizontal rolls and bottom vertical rolls of the rolling mill include:

[0094] In response to the deviation of the bottom width exceeding a first preset value, the horizontal rolls of the rolling mill are adjusted based on the first scheme;

[0095] In response to the deviation of the bottom width exceeding the second preset value, the horizontal roll and the bottom vertical roll of the rolling mill are adjusted based on the second scheme;

[0096] In response to the deviation of the bottom width exceeding the third preset value, the horizontal roll and the bottom vertical roll of the rolling mill are adjusted based on the third scheme.

[0097] The first preset value is 0.1mm~0.2mm, and the first scheme is an adjustment scheme of ±0.1mm~0.2mm;

[0098] The second preset value is 0.3mm~0.4mm, and the second scheme is an adjustment scheme of ±0.3mm~0.4mm;

[0099] The third preset value is 0.5mm~0.7mm, and the third option is an adjustment option of ±0.5mm~0.7mm.

[0100] The adjustment range is the first preset value: 0.1mm~0.2mm (exceeding / below the standard):

[0101] Adjusting roller: E2 horizontal roller;

[0102] Adjustment Logic Explanation: As a two-roll mill, E2 is most significantly affected by adjustments to the bottom width specification. Figure 6 The change in workpiece specifications caused by the downward pressure of the E2 horizontal roll.

[0103] The impact of the adjustment scheme: Pressing down on the E2 horizontal roller will reduce the metal at the bottom of the rail and decrease the bottom width specification. Releasing E2 will have the opposite effect of pressing down.

[0104] Option 1:

[0105] (1) Specifications are smaller than the lower limit of the standard.

[0106] ① When the bottom width specification is less than the standard lower limit by 0.1mm~0.2mm, the bottom width can be increased by 0.1mm~0.2mm and the vertical symmetry can be increased by 0.1mm~0.2mm by adjusting the horizontal roller of the first pass of E2.

[0107] (2) Specifications exceed the standard limit

[0108] ① When the bottom width specification exceeds the standard upper limit by 0.1mm~0.2mm, the bottom width can be reduced by 0.1mm~0.2mm and the vertical width can be reduced by 0.1mm~0.2mm by adjusting the horizontal roller of the first pass of E2.

[0109] The adjustment range is the second preset value: 0.3mm~0.4mm (exceeding / below the standard).

[0110] Adjusting rollers: UF bottom vertical roller, E2 horizontal roller;

[0111] Adjustment Logic Explanation: For cases where the bottom width specification is lower than standard, adjusting only the E2 horizontal roll is feasible but unreasonable, as it will cause large fluctuations in the rolling force of the E2 horizontal roll, leading to steel output twisting. Therefore, a more reasonable adjustment approach is to adjust the E2 horizontal roll and the UF bottom vertical roll together to balance the changes in bottom metal content. Figure 7 The adjusted specifications and their impact are illustrated in the diagram. If the bottom width is lower than the standard, the adjustment approach is the opposite of the approach for exceeding the standard.

[0112] The impact of the adjustment plan: Adjusting the roll gap value of the E2 horizontal roll changes the amount of metal at the bottom of the rail, affecting the bottom width specification; and since UF is a semi-universal rolling mill equipped with a finished product hole, the adjustment of the bottom vertical roll causes the bottom metal to widen laterally and extend longitudinally in the direction of the upper and lower leg tip thickness, affecting the bottom width, upper leg tip thickness, lower leg tip thickness, and vertical symmetry specification.

[0113] Option 2:

[0114] (1) Specifications are smaller than the lower limit of the standard:

[0115] ① When the bottom width specification is less than the standard lower limit of 0.3mm, increase the roll gap of the first pass of E2 horizontal roll by 0.2mm and decrease the roll gap of the first pass of UF horizontal roll by 0.1mm. This can increase the bottom width by 0.3mm, increase the vertical symmetry by 0.15mm, and decrease the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0116] ② When the bottom width specification is less than the standard lower limit of 0.4mm, increase the roll gap of the first pass of E2 horizontal roll by 0.3mm and decrease the roll gap of the first pass of UF horizontal roll by 0.1mm. This can increase the bottom width by 0.4mm, increase the vertical symmetry by 0.2mm, and decrease the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0117] (2) Specifications exceed the standard upper limit:

[0118] ③ When the bottom width specification exceeds the standard upper limit by 0.3mm, reduce the roll gap of the first pass of E2 horizontal roll by 0.2mm and increase the roll gap of the first pass of UF horizontal roll by 0.1mm. This can reduce the bottom width by 0.3mm, reduce the vertical symmetry by 0.15mm, and increase the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0119] ④ When the bottom width specification exceeds the standard upper limit by 0.4mm, reduce the roll gap of the first pass of E2 horizontal roll by 0.3mm and increase the roll gap of the first pass of UF horizontal roll by 0.1mm. This can reduce the bottom width by 0.4mm, reduce the vertical symmetry by 0.2mm, and increase the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0120] The adjustment range is the third preset value: 0.5mm~0.6mm (exceeding / below the standard).

[0121] Adjust roll gap values: E2 horizontal roll, E1 horizontal roll, UF bottom vertical roll;

[0122] Adjustment Logic Explanation: For cases where the bottom width specification is severely non-compliant with standards, in addition to the 0.3mm~0.4mm adjustment plan, the horizontal rolls of the three E1 passes need further adjustment. This, combined with the E2 horizontal rolls and the UF bottom vertical rolls, forms a combined adjustment. The principle is to adjust the pass shape of E1 to achieve uniform widening and extension of the bottom metal of the rolled piece, thereby reducing / increasing the bottom metal feed to the E2 mill, lowering the processing speed of the E2 horizontal rolls, and finally completing the rail bottom processing by the UF finished product pass bottom vertical rolls. For example... Figure 8 As shown.

[0123] The impact of the adjustment scheme: The processing of the E1 horizontal roller changes the incoming metal of the rail base, affecting the bottom width specification. Furthermore, the adjustment of the E2 horizontal roller directly affects the upper and lower symmetry and bottom width specification. The processing of the vertical roller at the bottom of the UF finished product hole affects the thickness of the upper leg tip, the thickness of the lower leg tip, and the bottom width specification.

[0124] Option 3:

[0125] (1) Specifications are smaller than the lower limit of the standard.

[0126] ① When the bottom width specification is less than the standard lower limit of 0.5mm, increase the roll gap of the horizontal rolls in the first, second and third passes of E1 by 0.3mm, increase the roll gap of the horizontal rolls in the first pass of UE2 by 0.3mm, and decrease the roll gap of the bottom vertical roll in the first pass of UF by 0.1mm. This can increase the bottom width by 0.5mm, increase the vertical symmetry by 0.25mm, and decrease the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0127] ② When the bottom width specification is less than the standard lower limit of 0.6mm, increase the roll gap of the horizontal rolls in the first, second and third passes of E1 by 0.4mm, increase the roll gap of the horizontal rolls in the first pass of UE2 by 0.3mm, and decrease the roll gap of the bottom vertical roll in the first pass of UF by 0.1mm. This can increase the bottom width by 0.6mm, increase the vertical symmetry by 0.3mm, and decrease the thickness of the upper and lower leg tips by 0.1mm.

[0128] (2) Specifications exceed the standard limit

[0129] ① When the bottom width specification exceeds the standard upper limit by 0.5mm, reduce the roll gap of the horizontal rolls in the first, second and third passes of E1 by 0.3mm, reduce the roll gap of the horizontal rolls in the first pass of UE2 by 0.3mm, and increase the roll gap of the bottom vertical roll in the first pass of UF by 0.1mm. This can reduce the bottom width by 0.5mm, reduce the vertical symmetry by 0.25mm, and increase the thickness of the upper and lower leg tips by 0.1mm.

[0130] ② When the bottom width specification exceeds the standard upper limit by 0.6mm, reduce the roll gap of the horizontal rolls in the first, second and third passes of E1 by 0.4mm, reduce the roll gap of the horizontal rolls in the first pass of UE2 by 0.3mm, and increase the roll gap of the bottom vertical roll in the first pass of UF by 0.1mm. This can reduce the bottom width by 0.6mm, reduce the vertical symmetry by 0.3mm, and increase the thickness of the upper leg tip and the lower leg tip by 0.1mm.

[0131] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 9 , Figure 10 and Figure 11 If the deviation of the bottom width exceeds the preset value, and the thickness of the upper and lower leg tips is less than the head thickness, the steps for adjusting the horizontal roll or the bottom vertical roll of the rolling mill include:

[0132] In response to the deviation of the bottom width exceeding the fourth preset value, the horizontal rolls of the rolling mill are adjusted based on the fourth scheme;

[0133] In response to the deviation of the bottom width exceeding the fifth preset value, the bottom vertical roll of the mill is adjusted based on the fifth scheme;

[0134] In response to the deviation of the bottom width exceeding the sixth preset value, the bottom vertical roll of the mill is adjusted based on the sixth scheme.

[0135] The fourth preset value is 0.1mm~0.2mm, and the fourth scheme is an adjustment scheme of ±0.1mm~0.2mm;

[0136] The fifth preset value is 0.3mm~0.4mm, and the fifth scheme is an adjustment scheme of ±0.3mm~0.4mm;

[0137] The sixth preset value is 0.5mm~0.7mm, and the sixth scheme is an adjustment scheme of ±0.5mm~0.7mm.

[0138] Adjust the range to the fourth preset value: 0.1mm (exceeding / below the standard):

[0139] Adjusting roller: UF horizontal roller;

[0140] Adjustment Logic Explanation: As a semi-universal mill, the UF mill can also change the bottom metal by adjusting the bottom vertical rolls, such as... Figure 9 The downward pressure of the bottom vertical roller of the UF (Ultra-Foil) affects the specifications of the rolled piece.

[0141] The impact of the adjustment scheme: Pressing down on the UF horizontal rollers reduces the metal content at the bottom of the rail, thereby reducing the bottom width specification. Releasing the UF bottom vertical rollers has the opposite effect of pressing down.

[0142] Option 4:

[0143] ① Specifications are smaller than the lower limit of the standard:

[0144] When the bottom width specification is less than the standard lower limit of 0.1mm, by adjusting the bottom vertical roller of the first pass of UF to press down the roller gap by 0.1mm, the bottom width can be increased by 0.1mm, the vertical symmetry can be increased by 0.1mm, the upper and lower leg thickness can be decreased by 0.1mm, and the bottom width can be decreased by 0.1mm.

[0145] ② Specifications exceed the upper limit of the standard

[0146] When the bottom width specification exceeds the standard upper limit by 0.1mm, the roll gap can be reduced by 0.1mm by adjusting the bottom vertical roller of the first pass of UF, which can reduce the bottom width by 0.1mm, reduce the vertical symmetry by 0.1mm, increase the vertical leg thickness by 0.1mm, and increase the bottom width by 0.1mm.

[0147] The adjustment range is the fifth preset value: 0.2mm~0.3mm (exceeding / below the standard).

[0148] Adjusting rollers: UF bottom vertical roller, U2 bottom vertical roller;

[0149] Adjustment Logic Explanation: For cases where the bottom width specification is below standard, adjusting only the UF bottom vertical roll is feasible but unreasonable, as it causes steel output bending. Therefore, a more reasonable adjustment approach is to adjust the U2 bottom vertical roll in the opposite direction to the UF bottom vertical roll. This intensifies the UF's processing of the bottom metal, balancing overall metal variation, such as... Figure 10 The adjusted specifications and their impact are illustrated in the diagram. If the bottom width is lower than the standard, the adjustment approach is the opposite of the approach for exceeding the standard.

[0150] Impact of the adjustment scheme: Changing the roll gap value of the U2 bottom vertical roll will cause a change in the amount of metal at the bottom of the rail, thus affecting the bottom width specification. This is because the adjustment of the bottom vertical roll directly affects the thickness and width of the rolled piece. Specifically, when the U2 bottom vertical roll and the UF bottom vertical roll are adjusted in opposite directions, the effects of the bottom vertical roll on the bottom width, upper leg tip thickness, and lower leg tip thickness of the rolled piece are offset. However, the change in the bottom metal material leads to changes in UF processing, which in turn exacerbates the change in bottom width.

[0151] Fifth option:

[0152] ① Specifications are smaller than the lower limit of the standard:

[0153] When the bottom width specification is less than the standard lower limit of 0.2mm, increase the roll gap of the bottom vertical roll of the first pass of U2 by 0.2mm and decrease the roll gap of the horizontal roll of the first pass of UF by 0.1mm. This can increase the bottom width by 0.2mm and increase it symmetrically by 0.1mm.

[0154] When the bottom width specification is less than the standard lower limit of 0.3mm, increasing the roll gap of the bottom vertical roll of the first pass of U2 by 0.3mm and decreasing the roll gap of the horizontal roll of the first pass of UF by 0.2mm can increase the bottom width by 0.3mm and increase it symmetrically by 0.15mm.

[0155] ② Specifications exceed the standard upper limit:

[0156] When the bottom width specification is less than the standard lower limit of 0.2mm, reduce the roll gap of the bottom vertical roll of the first pass of U2 by 0.2mm and increase the roll gap of the horizontal roll of the first pass of UF by 0.1mm. This can reduce the bottom width by 0.2mm and reduce it symmetrically by 0.1mm.

[0157] When the bottom width specification is less than the standard lower limit of 0.3mm, reduce the roll gap of the bottom vertical roll of the first pass of U2 by 0.3mm and increase the roll gap of the horizontal roll of the first pass of UF by 0.2mm. This can reduce the bottom width by 0.3mm and reduce it symmetrically by 0.15mm.

[0158] The adjustment range is the sixth preset value: 0.4mm~0.6mm (exceeding / below the standard).

[0159] Adjust roll gap values: UR1 bottom vertical roll, UR2 bottom vertical roll, UF bottom vertical roll;

[0160] Adjustment Logic Explanation: For cases where the bottom width specification is severely non-compliant with standards, in addition to the 0.4mm~0.6mm adjustment plan, the bottom vertical rolls of UR1 (three passes) also need adjustment. This, combined with the bottom vertical roll of UR2, forms a unidirectional adjustment combination, significantly altering the incoming metal material for UF rolling and exacerbating the metal processing challenges of the UF bottom vertical rolls. For example... Figure 11 As shown.

[0161] The impact of the adjustment scheme: The release of bottom vertical rollers of UR1 and UR2 increases the incoming metal at the bottom of the rail, resulting in more bottom metal. The downward pressure of the bottom vertical roller of UF increases the metal processing, thus increasing the ductility and width of the rolled piece. This directly affects the symmetry of the upper and lower parts and the bottom width specifications.

[0162] Option 6:

[0163] ① Specifications are smaller than the lower limit of the standard:

[0164] When the bottom width specification is less than the standard lower limit of 0.4mm, increase the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.4mm, increase the horizontal roll gap of UR2 in the 1st pass by 0.3mm, and decrease the bottom vertical roll gap of UF in the 1st pass by 0.2mm. This can increase the bottom width by 0.4mm and increase it symmetrically by 0.2mm.

[0165] When the bottom width specification is less than the standard lower limit of 0.5mm, increase the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, increase the horizontal roll gap of UR2 in the 1st pass by 0.5mm, and decrease the bottom vertical roll gap of UF in the 1st pass by 0.2mm. This can increase the bottom width by 0.5mm and increase it symmetrically by 0.25mm.

[0166] When the bottom width specification is less than the standard lower limit of 0.6mm, increase the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, increase the horizontal roll gap of UR2 in the 1st pass by 0.5mm, and decrease the bottom vertical roll gap of UF in the 1st pass by 0.3mm. This can increase the bottom width by 0.6mm and increase it symmetrically by 0.3mm.

[0167] ② Specifications exceed the standard upper limit:

[0168] When the bottom width specification exceeds the standard upper limit by 0.4mm, reduce the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.4mm, reduce the horizontal roll gap of UR2 in the 1st pass by 0.3mm, and increase the bottom vertical roll gap of UF in the 1st pass by 0.2mm. This can reduce the bottom width by 0.4mm and reduce it symmetrically by 0.2mm.

[0169] When the bottom width specification exceeds the standard upper limit by 0.5mm, reduce the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, reduce the horizontal roll gap of UR2 in the 1st pass by 0.5mm, and increase the bottom vertical roll gap of UF in the 1st pass by 0.2mm. This can reduce the bottom width by 0.5mm and reduce it symmetrically by 0.25mm.

[0170] When the bottom width specification exceeds the standard upper limit by 0.6mm, reduce the bottom vertical roll gap of UR1 in the 1st, 2nd and 3rd passes by 0.5mm, reduce the horizontal roll gap of UR2 in the 1st pass by 0.5mm, and increase the bottom vertical roll gap of UF in the 1st pass by 0.3mm. This can reduce the bottom width by 0.6mm and reduce it symmetrically by 0.3mm.

[0171] In some embodiments, please refer to Figure 1 The step of obtaining historical data on rail production through VR simulation includes:

[0172] Data on the rails and their surrounding environment is obtained, and VR technology is used to simulate a virtual rail environment.

[0173] In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results during the simulation are recorded as historical data.

[0174] Virtual reality technology can simulate various complex railway environments, including different terrains, climates, and soil conditions, thereby providing a more comprehensive assessment of the applicability of rail adjustment schemes under different conditions. By simulating the rail adjustment process under different conditions, adjustment strategies can be optimized, reducing trial-and-error costs in actual operation and improving adjustment accuracy. It provides a safe and risk-free simulation environment, allowing operators to conduct multiple simulations in a virtual environment, thus reducing human error in actual operation. Railway maintenance work often involves high-risk environments such as high voltage. Virtual reality technology can provide a safe simulation environment, enabling operators to simulate without encountering actual risks, thereby reducing safety risks. By simulating different railway environments and conditions, the performance and applicability of products can be more comprehensively evaluated, thereby accelerating the product development process.

[0175] In some embodiments, please refer to Figure 1 The steps of acquiring historical data and constructing an expert experience model include:

[0176] The historical base width specifications of each work group were extracted from historical data;

[0177] Analyze the distribution of historical bottom width specification deviations, rank them according to the control effect of historical bottom width specifications, and identify the work groups whose ranking exceeds the threshold as expert knowledge.

[0178] An expert experience model is constructed based on the distribution of deviation values ​​and expert knowledge.

[0179] By analyzing historical data on bottom width deviations, the strengths and weaknesses of different work teams in controlling bottom width specifications can be identified. Expert experience models can provide more precise guidance based on these deviations, helping teams better control bottom width specifications during production, thereby improving the quality of rail production. Expert knowledge can optimize production processes, reduce unnecessary steps and waste, and increase production efficiency. By learning from the practices of successful work teams, other teams can also quickly improve their own production levels.

[0180] Precise bottom width specification control helps reduce scrap and rework, thereby lowering production costs. Expert experience models can predict potential bottom width specification issues and take corrective measures in advance to avoid waste in the production process. Optimizing the production process will improve material utilization, further reducing production costs. By learning from the experience of outstanding work teams, teams can use materials more rationally and reduce waste.

[0181] In some embodiments, please refer to Figure 1 The methods also include:

[0182] Based on different specification deviation values, corresponding adjustment schemes are established in the expert experience model.

[0183] Through expert experience models, the most suitable adjustment solution can be quickly matched for different specification deviations. This precise matching method reduces the process of manual trial and error, improving the accuracy and efficiency of adjustments. With corresponding adjustment solutions, the production process can be smoother, reducing production interruptions and delays caused by specification deviations. This improves overall production efficiency and reduces production costs.

[0184] The adjustment plans in the expert experience model are developed based on historical data and expert knowledge, ensuring uniformity and standardization. This guarantees consistency in handling the same specification deviation values ​​across different work groups and time periods, thereby improving overall product quality. Implementing standardized adjustment plans reduces quality fluctuations caused by human factors. This helps improve product stability and reliability, meeting customer expectations and needs.

[0185] The expert experience model summarizes and refines the adjustment experience and knowledge of outstanding work teams. New employees or those with less experience can quickly master the correct adjustment methods by learning from and referring to the adjustment plans in the model, thereby improving work efficiency and quality. As the production process continues, new specification deviations and adjustment plans will constantly emerge. The expert experience model can be continuously updated and improved, incorporating new experiences and knowledge to form a virtuous cycle that promotes experience accumulation and technological progress.

[0186] In some embodiments, please refer to Figure 1 In response to the simultaneous deviation of upper leg tip thickness, lower leg tip thickness, and head thickness, the percentage of deviation of upper leg tip thickness, lower leg tip thickness, and head thickness is compared, and the portion with the larger deviation is adjusted first.

[0187] By comparing the percentage deviations in upper leg tip thickness, lower leg tip thickness, and head thickness, it's possible to quickly identify which part has the most severe deviation. This allows for faster correction of deviations and improves overall adjustment efficiency. It avoids repeated trials and adjustments across multiple deviation areas, thus reducing trial-and-error costs. It also helps reduce the number of scraps caused by deviations. This is of great significance for improving product quality and reducing production costs.

[0188] This invention proposes a system for adjusting the bottom width of rails. Please refer to [link / reference]. Figure 2 ,include:

[0189] The construction unit 100 is configured to acquire historical data on rail production through VR simulation and to build an expert experience model based on the historical data.

[0190] Simulation unit 200 is configured to integrate expert experience models into a simulation platform and simulate rail adjustment conditions.

[0191] The first adjustment unit 300 is configured to adjust the horizontal roll and bottom vertical roll of the rolling mill in response to a deviation of the bottom width exceeding a preset value and the thickness of the upper and lower leg tips being greater than the head thickness.

[0192] The second adjustment unit 400 is configured to adjust the mill horizontal roll or bottom vertical roll in response to a deviation in bottom width exceeding a preset value and the thickness of the upper and lower leg tips being less than the head thickness.

[0193] This invention is a model-based adjustment method based on expert experience, specifically addressing the deviation problem of rail base width. The implementation of this scheme not only ensures the stability of the rolling process but also significantly improves the control accuracy of rail base width. By adopting this scheme, the timeliness of adjustments can be improved, ensuring the standardization of rolling adjustments. This not only solves the problem of low computational efficiency in manual adjustments but also avoids errors caused by human factors. Furthermore, this scheme effectively reduces fluctuations in product base width specification control between work teams, thereby improving the consistency and reliability of the entire production process. This data- and experience-based adjustment scheme, through precise calculation and optimization, provides a more scientific and systematic method for rail production. It not only improves production efficiency but also ensures high product quality standards.

[0194] In some embodiments, please refer to Figure 12 and Figure 13 The following section uses a 60-gauge heavy rail system as an example to illustrate the implementation of the solution:

[0195] Obtain the rail specifications and dimensions, according to Figure 12 Determine whether the bottom width specification of the rail needs to be adjusted.

[0196] Input the sampling data. The remaining specifications are in the standard internal control. The bottom width needs to be reduced by 0.1mm. Click Calculate to generate the solution: reduce the roll gap of the first pass of E2 horizontal roller by 0.1mm, reduce the roll gap of the first pass of UF horizontal roller by 0.1mm. The impact values ​​are: reduce the bottom width by 0.2mm, reduce the head width by 0.1mm, and increase the rail crown fullness.

[0197] The model calculation scheme was distributed, the actual roll gap value was modified, and then samples were taken for the next batch. The results are as follows. Figure 13 As shown.

[0198] Analysis of the adjusted sampled data shows that the issued plan significantly changes the bottom width specification, and its impact on the bottom width specification is also...

[0199] This invention improves adjustment accuracy: by utilizing an expert experience model, the adjustment amount of the rail base width can be more accurately grasped, reducing adjustment errors and making the rail base width more in line with internal control standards.

[0200] Enhanced stability and consistency of adjustments: Avoids fluctuations in results caused by individual differences and varying operating habits during manual adjustments. Maintains relatively stable and consistent adjustment results under all production conditions.

[0201] Improve production efficiency: Real-time adjustments and corrections can save a lot of time, eliminating the need for repeated measurements and trial adjustments.

[0202] Reduced labor costs: It reduces reliance on extensive manual operations and calculations, thus lowering the intensity of manual labor. Adjustment tasks that previously required multiple workers to work together can now be partially or even fully automated through models.

[0203] Optimize product quality: Stable rail bottom width specifications help improve the overall quality of the product and enhance its competitiveness in the market.

[0204] Based on the same inventive concept, according to another aspect of the present invention, such as Figure 14 As shown, an embodiment of the present invention also provides a computer device 30, which includes a processor 310 and a memory 320. The memory 320 stores a computer program 321 that can be run on the processor. When the processor 310 executes the program, it performs the steps of the method described above.

[0205] Based on the same inventive concept, according to another aspect of the present invention, such as Figure 15 As shown, embodiments of the present invention also provide a computer-readable storage medium 40, which stores a computer program 410 that, when executed by a processor, performs the methods described above.

[0206] Embodiments of the present invention may also include a corresponding computer device. The computer device includes a memory, at least one processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes any of the methods described above when executing the program.

[0207] The memory, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions / modules in the embodiments of this application. The processor executes various functional applications and data processing of the device by running the non-volatile software programs, instructions, and modules stored in the memory, thereby implementing the above-described method.

[0208] The memory may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the device. Furthermore, the memory may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In embodiments, the memory may optionally include memory remotely located relative to the processor, which can be connected to the local module via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0209] Finally, it should be noted that those skilled in the art will understand that all or part of the illustrative methods 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 illustrative embodiments of the methods described above. The storage medium for the program can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc. The embodiments of the computer program described above can achieve the same or similar effects as any of the corresponding foregoing method embodiments.

[0210] Those skilled in the art will also understand that the various exemplary logic blocks, modules, circuits, and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, the functionality of various illustrative components, blocks, modules, circuits, and steps has been generally described. Whether this functionality is implemented as software or as hardware depends on the specific application and the design constraints imposed on the system as a whole. Those skilled in the art can implement the functionality in various ways for each specific application, but such implementation decisions should not be construed as departing from the scope of the embodiments disclosed herein.

[0211] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. The sequence numbers of the disclosed embodiments of this invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0212] It should be understood that, as used herein, the singular form “a” is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, “and / or” refers to any and all possible combinations of one or more of the associated listed items.

[0213] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A method for adjusting the bottom width of a rail, characterized in that, include: Historical data on rail production was obtained through VR simulation, and an expert experience model was built based on the historical data. Integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment; If the deviation of the bottom width exceeds the preset value, and the thickness of both the upper and lower leg tips is greater than the head thickness, then adjust the horizontal roll and the bottom vertical roll of the rolling mill. If the deviation of the bottom width exceeds the preset value, and the thickness of the upper and lower leg tips is less than the head thickness, then adjust the horizontal roll or the bottom vertical roll of the rolling mill.

2. The method for adjusting the bottom width of a rail according to claim 1, characterized in that, The steps for obtaining historical data on rail production through VR simulation include: Data on the rails and their surrounding environment is obtained, and VR technology is used to simulate a virtual rail environment. In a virtual environment, the rail adjustment process under different conditions is simulated, and various parameters and results during the simulation are recorded as historical data.

3. The method for adjusting the bottom width of a rail according to claim 1, characterized in that, The steps for constructing the expert experience model based on the historical data include: The historical base width specifications of each work group were extracted from historical data; Analyze the distribution of historical bottom width specification deviations, rank them according to the control effect of historical bottom width specifications, and identify the work groups whose ranking exceeds the threshold as expert knowledge. An expert experience model is constructed based on the distribution of deviation values ​​and expert knowledge.

4. The method for adjusting the bottom width of a rail according to claim 3, characterized in that, The method also includes: Based on different specification deviation values, corresponding adjustment schemes are established in the expert experience model.

5. The method for adjusting the bottom width of a rail according to claim 1, characterized in that, In response to the simultaneous deviation of upper leg tip thickness, lower leg tip thickness, and head thickness, the percentage of deviation of upper leg tip thickness, lower leg tip thickness, and head thickness is compared, and the portion with the larger deviation is adjusted first.

6. A system for adjusting the bottom width of a rail, characterized in that, include: The construction unit is configured to acquire historical data on rail production through VR simulation and to build an expert experience model based on the historical data. The simulation unit is configured to integrate expert experience models into the simulation platform and simulate the working conditions of rail adjustment. The first adjustment unit is configured to adjust the horizontal roll and bottom vertical roll of the rolling mill in response to a deviation in bottom width exceeding a preset value and a thickness of upper and lower leg tips greater than head thickness. The second adjustment unit is configured to adjust the mill horizontal roll or bottom vertical roll in response to a deviation in bottom width exceeding a preset value and the thickness of the upper and lower leg tips being less than the head thickness.

7. A computer device, comprising: At least one processor; And a memory storing a computer program executable on the processor, characterized in that, when the processor executes the program, it performs the steps of a method for adjusting the bottom width of a rail as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it performs the steps of the method for adjusting the bottom width of a rail as described in any one of claims 1 to 5.

Images