H-beam rolling parameter adjusting method and system based on size prediction

Abstract

The application discloses a H-shaped steel rolling parameter adjusting method and system based on size prediction, which comprises the following steps: (1) based on the proportional coefficient alpha between the incoming size before rough rolling and the H-shaped steel product size, the roll gap value of the blooming mill is adjusted, so that the proportional coefficient alpha is located in the set value interval; (2) before the rough rolling, edge rolling and finishing rolling processes, the roll gap of the corresponding roller is adjusted, so that the steel billet size estimation value of each pass is located in the deviation range allowed by the corresponding target size. Before each rolling process of the universal rolling, the rolling parameters in the corresponding rolling process are adjusted based on the estimated size of the H-shaped steel, so that the size of the rolled H-shaped steel meets the target requirements, greatly improves the size qualification rate of the H-shaped steel product after the universal rolling, and improves the product yield.

Description

Technical Field

[0001] This invention belongs to the field of hot rolling technology, and more specifically, this invention relates to a method and system for adjusting H-beam rolling parameters based on size prediction. Background Technology

[0002] The dimensions of hot-rolled H-beams include height (H), width (B), web thickness (W), flange thickness (T), eccentricity (S), and weight difference per meter (ΔM). These dimensions are primarily controlled by a universal rolling mill. Currently, the universal rolling mill for hot-rolled H-beams mainly consists of a roughing mill (UR), an edge mill (E), and a finishing mill (UF), using a reciprocating, XH rolling process.

[0003] Because H-beams are rolled at high temperatures during universal rolling and the workpieces are constantly in the rolling process, manual dimensional measurement is impossible. When dimensional deviations occur during rolling, operators find it difficult to make quick adjustments, ultimately resulting in defective products and losses. Adding dimensional inspection equipment at the front, middle, and rear of the mill to monitor the dimensional parameters of H-beams presents several problems:

[0004] (1) High input costs and equipment maintenance costs;

[0005] (2) During universal rolling, the H-beam rolls are always in a reciprocating running state. Once there are deviations in the strip alignment, tilting, or flattening, the dimensional inspection equipment is easily damaged.

[0006] (3) Harsh environmental factors such as high water vapor and high temperature can easily cause frequent failures of size detection equipment. Summary of the Invention

[0007] This invention provides a method for adjusting H-beam rolling parameters based on size prediction. Before each rolling process of universal rolling, the rolling parameters in the corresponding rolling process are adjusted based on the estimated size of the H-beam so that the size of the rolled H-beam meets the target requirements.

[0008] This invention is implemented as follows: a method for adjusting H-beam rolling parameters based on size prediction, the method comprising the following steps:

[0009] (1) Adjust the roll gap value of the billet mill based on the ratio coefficient α between the size of the incoming material before roughing and the size of the H-beam product, so that the ratio coefficient α is within the set value range;

[0010] (2) Before the roughing, edge rolling and finishing rolling processes, adjust the roll gap of the corresponding rolls so that the estimated value of the billet size for each pass is within the allowable deviation range of the corresponding target size.

[0011] In some embodiments, the formula for calculating the scaling factor α is as follows:

[0012] α = (T1 ÷ T2) ÷ (W1 ÷ W2);

[0013] Wherein, T1 is the average flange thickness of the incoming material from the universal rolling mill; W1 is the web thickness of the incoming material from the universal rolling mill; T2 is the flange thickness of the H-beam product; and W2 is the web thickness of the H-beam product.

[0014] In some embodiments, if the proportionality coefficient α > 2, the roll gap value of the billet mill is adjusted to increase the web thickness of the universal roll material; if the proportionality coefficient α < 1, the roll gap value of the billet mill is adjusted to decrease the web thickness of the universal roll material, until the proportionality coefficient between the universal roll material size and the H-beam product size satisfies 1 < α < 2.

[0015] In some embodiments, when the estimated billet size for each pass exceeds the allowable deviation range of the corresponding target size, an early warning is issued, and the roll gap of the corresponding roll is adjusted based on the early warning until the estimated billet size for each pass is within the allowable deviation range of the corresponding target size.

[0016] In some embodiments, the roll gap adjustment method before the roughing process is as follows:

[0017] Before roughing H-beam billets, the vertical and horizontal roll gaps of the roughing mill are adjusted to ensure that the flange thickness T in each pass during the roughing process is consistent. ur and web thickness W ur The estimated value is within the allowable deviation range of the corresponding target value.

[0018] In some embodiments, the roll gap adjustment method before the edge rolling process is as follows:

[0019] Before the edge rolling mill rolls the H-beam billet, the horizontal roll gap value of the edge rolling mill is adjusted so that the estimated billet width for each pass in the edge rolling process is within the allowable deviation range of the target width.

[0020] In some embodiments, the roll gap adjustment method is as follows:

[0021] Before the universal finishing mill finishes the H-beam steel billet, the roll gap of the universal finishing mill is adjusted so that the estimated billet size for each pass in the finishing process is within the allowable deviation range of the target billet size.

[0022] The dimensions of the billet include: flange thickness, web thickness, width, height, eccentricity, and weight per meter.

[0023] In some embodiments, the hot dimensions of the billet in the last pass of the finishing rolling process are converted to the room temperature dimensions. The specific conversion formula is as follows:

[0024] Room temperature dimensions = hot dimensions × (actual temperature of the last billet pass - room temperature) × coefficient of thermal expansion of steel.

[0025] This invention is implemented as follows: an H-beam rolling parameter adjustment system based on size prediction, the system comprising:

[0026] Billet mill and hot-rolled H-beam universal rolling mill unit

[0027] The billet mill, hot-rolled H-beam universal rolling mill unit, and PLC controller are connected for communication.

[0028] The PLC controller adjusts the roll gap of the billet mill and the hot-rolled H-beam universal mill based on the above-mentioned method of adjusting H-beam rolling parameters based on size prediction, so that the dimensions of the produced H-beams conform to the dimensions of H-beam products.

[0029] Before each rolling process of universal rolling, the present invention adjusts the rolling parameters of the corresponding rolling process based on the estimated size of the H-beam. Without the need for testing equipment, the size of the rolled H-beam can meet the target requirements, which greatly improves the dimensional qualification rate of the universal rolled H-beam products and increases the product yield. Attached Figure Description

[0030] Figure 1 A flowchart of the H-beam rolling parameter adjustment method based on size prediction provided in an embodiment of the present invention. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0032] The hot rolling process of H-beams consists of multiple rounds of rough rolling, edge rolling, and finish rolling.

[0033] Figure 1 The flowchart of the H-beam rolling parameter adjustment method based on size prediction provided in this embodiment of the invention is as follows:

[0034] (1) Adjust the roll gap value of the billet mill based on the ratio coefficient α between the size of the incoming material before roughing and the size of the H-beam product, so that the ratio coefficient α is within the set value range;

[0035] Based on the finished roll parameters of the H-beam rolling mill (BD), namely the dimensions of the incoming material before the universal rolling mill and the dimensions of the produced H-beam products, the proportionality coefficient α between the dimensions of the incoming material before the universal rolling mill and the dimensions of the H-beam products is calculated. α = (T1 ÷ T2) ÷ (W1 ÷ W2). The dimension parameters and proportionality coefficient α are shown in Table 1.

[0036] Table 1. Dimensional parameters and proportional coefficient α

[0037]

[0038] Wherein, T1 is the average flange thickness of the incoming material before universal rolling, which is the average flange thickness after BD rolling; W1 is the web thickness of the incoming material before universal rolling, which is the web thickness after BD rolling; T2 is the flange thickness of the H-beam product; W2 is the web thickness of the H-beam product.

[0039] If the proportionality coefficient α > 2, the web thickness of the incoming material from the universal rolling mill needs to be increased; if the proportionality coefficient α < 1, the web thickness of the incoming material from the universal rolling mill needs to be decreased. By adjusting the roll gap value (gap) of the BD mill, the proportionality coefficient between the dimensions of the incoming material from the universal rolling mill and the dimensions of the H-beam product can be made to satisfy 1 < α < 2.

[0040] (2) Before the roughing process of the H-beam billet, the vertical roll gap and horizontal roll gap of the roughing mill (UR) are adjusted to ensure that the flange thickness T in each pass during the roughing process is consistent. ur and web thickness W ur The estimated value is within the allowable deviation range of the corresponding target value;

[0041] The UR mill is a roughing mill, in which the flange thickness T is completed in each pass during the roughing process. ur Web thickness W ur The control system, after inputting the UR vertical roll gap compensation value and the UR horizontal roll gap compensation value, estimates the flange thickness T of the slab in each pass of the roughing process. ur and web thickness W ur The estimated value, the detection of the flange thickness T ur and web thickness W ur If the estimated value exceeds the allowable deviation range of the target flange thickness and target web thickness for the corresponding pass, and the test result is yes, then adjust the vertical roll gap compensation value and / or the horizontal roll gap compensation value of the roughing mill to ensure that the flange thickness T for each pass is within the allowable deviation range. ur and web thickness W ur The estimated values ​​are within the allowable deviation range for the target flange thickness and the target web thickness.

[0042] In this invention, the flange thickness T ur and web thickness W ur The estimated value is calculated using the following formula, which is as follows:

[0043] (21) Edge thickness T ur The specific calculation formula is as follows:

[0044] T ur = G V-ur+G V-offset +β V-ur , where β V-ur =P V-ur ×K V-ur (1)

[0045] G V-ur G represents the set value for the roll gap of the UR vertical roll, in mm. V-offset The UR vertical roll gap compensation value is manually entered, in mm; β V-ur P represents the bounce value of the UR vertical roll gap, in mm. V-ur The UR vertical roll rolling force is calculated using the Ekland formula, with units of t and K. V-ur This is an empirical coefficient, typically ranging from 0.003 to 0.005 mm / t.

[0046] (22) Web thickness W ur The specific calculation formula is as follows:

[0047] W ur = G H-ur +G H-offset +β H-ur ; where β H-ur =P H-ur ×K H-ur (2)

[0048] Among them, G H-ur The set roll gap for the UR horizontal roll, unit: mm; G H-offset The UR horizontal roll gap compensation value is manually entered, in mm; β H-ur P represents the bounce value of the UR horizontal roll gap, in mm. H-ur The horizontal rolling force is calculated using the Ekland formula, with units of t and K. H-ur This is an empirical coefficient, typically ranging from 0.00025 to 0.0005 mm / t.

[0049] Flange thickness T for each track ur and web thickness W ur The estimated values ​​are compared with the target flange thickness and target web thickness. If the values ​​exceed the tolerance, an early warning is issued to the operator. Before the roughing process, the operator adjusts the vertical roll gap compensation value and / or the horizontal roll gap compensation value of the roughing mill based on the early warning.

[0050] Taking a product with dimensions of 400x400x13x21 mm, steel grade Q235B, and 9 passes of universal rolling as an example, the control requirements for the target dimensions are illustrated in Table 2:

[0051] Table 2 Target dimensions for each pass in the roughing process.

[0052] 1～3 <![CDATA[T ur *±(1~2)]]> <![CDATA[W ur *±(1.5~2.5)]]> 4～6 <![CDATA[T ur *±(1~1.5)]]> <![CDATA[W ur *±(1~1.5)]]> 7～8 <![CDATA[T ur *±(0.5~1)]]> <![CDATA[W ur *±(0.5~0.8)]]> 9 <![CDATA[T ur *±(0.5~0.7)]]> <![CDATA[W ur *±(0.3~0.5)]]>

[0053] Table T ur *、W ur * is T ur W ur The corresponding target value.

[0054] (3) Before the edge rolling process of H-beam steel billet, adjust the horizontal roll gap value of the edge rolling mill so that the estimated value of the billet width of each pass in the edge rolling process is within the allowable deviation range of the target billet width.

[0055] The edge rolling mill only processes the width (B) of the H-beam steel billet. Before the edge rolling mill rolls the H-beam steel billet, the width (B) of each pass during the rolling process is estimated, and then the horizontal roll gap compensation value of the edge rolling mill is adjusted so that the estimated value of the billet width of each pass during the edge rolling process is within the allowable deviation range of the target billet width.

[0056] The formula for calculating the width (B) of an H-beam billet is as follows:

[0057] B E =G E +G E-offset +β E (3)

[0058] Among them, G E The horizontal roll gap set for the edge mill; G E-offset This is the horizontal roll gap compensation value for the horizontal rolls of the edge rolling mill; since the rolling force of the edge rolling mill in actual production is relatively small, generally between 100t and 200t, it can be set to a fixed value based on experience, β. E ≈0.3~0.5mm.

[0059] The horizontal roll gap compensation value G of the edge mill horizontal rolls is manually input. E-offset Then, estimate the billet width B for each pass in the edge rolling process. E The width B of the billet in each pass of the edge rolling process E The estimated width is compared with the target width. If the difference exceeds the target width, an early warning will be issued to the operator. Before rolling on the edge mill, the operator adjusts the horizontal roll gap compensation value based on the early warning. Taking a product size of 400x400x13x21mm, steel grade Q235B, and a 9-pass universal rolling process as an example, the target billet width for each pass during edge mill rolling is illustrated in Table 3.

[0060] Table 3 Target width for each pass in the edge mill rolling process

[0061] 1～3 <![CDATA[B E *±(2~4)]]> 4～6 <![CDATA[B E *±(1.5~2.5)]]> 7～8 <![CDATA[B E *±(1.5~2)]]> 9 <![CDATA[B E *±(1~1.5)]]>

[0062] Table BE *For B E The corresponding target value.

[0063] (4) Before the universal finishing mill finishes the H-beam steel billet, the roll gap of the universal finishing mill is adjusted so that the estimated value of the billet size for each pass of the finishing mill is within the allowable deviation range of the corresponding target size.

[0064] Since the universal finishing mill (UF) has a significant impact on the dimensions of H-beam products, directly determining the final product dimensions after universal rolling, it is necessary to calculate the flange thickness T for each pass during the universal finishing rolling process. uf Web thickness W uf Width B uf Height H uf Finally, the hot dimensions of the H-beams in the last pass are converted to the room temperature dimensions.

[0065] (41) Flange thickness (T) of billet in each pass of universal finishing rolling process uf Web thickness (W) uf The calculation is based on the following formula, and the empirical coefficient K can be modified according to experience during this calculation process. V-ur Empirical coefficient K H-ur ;

[0066] T uf =G V-uf +G V-uf-offset +β V-uf , where β V-uf =P V-uf ×K V-uf (4)

[0067] G V-uf The set value for the vertical roll gap of the finishing mill, unit: mm; G V-uf-offset The manually entered value for the vertical roll gap compensation of the finishing mill, in mm; β V-uf P represents the springback value of the vertical roll gap in a finishing mill, in mm. V-uf The rolling force of the vertical rolls in the finishing mill is calculated using the Ekland formula, with units of t and K. V-uf This is an empirical coefficient.

[0068] Web thickness W uf The specific calculation formula is as follows:

[0069] W uf =G H-uf +G H-uf-offset +β H-uf ; where β H-uf =P H-uf ×K H-uf (5)

[0070] G H-uf The set roll gap for the horizontal rolls of the finishing mill, unit: mm; G H-uf-offset The manually entered compensation value for the horizontal roll gap of the finishing mill, in mm; β H-uf P represents the springback value of the horizontal roll gap in a finishing mill, in mm. H-uf The rolling force of the horizontal rolls in the finishing mill is calculated using the Ekland formula, with units of t and K. H-uf This is an empirical coefficient.

[0071] (42) The width B of the billet in each pass of the universal finishing rolling process. uf =G uf +G uf-offsett +β uf ;

[0072] G uf The horizontal roll gap is set for the finishing mill; since the rolling force of the finishing mill is relatively small in actual production, it can be set to a fixed value based on experience, β. uf ≈0.3~0.5mm.

[0073] (43) Height of billet in each pass during universal finishing rolling (H) uf The specific calculation formula is as follows:

[0074]

[0075] Among them, R w The width of the UF horizontal roller is in mm.

[0076] The hot dimensions of the billet in the last pass of the finishing rolling process are converted to the room temperature dimensions. This conversion is completed based on formula (7), which is as follows:

[0077] Room temperature dimensions = Hot dimensions × (Measured temperature of the last billet pass - Room temperature) × Coefficient of thermal expansion of steel (7)

[0078] The coefficient of thermal expansion of steel is 1.2 × 10⁻⁶. -5 / ℃.

[0079] (44) The specific formula for calculating the eccentricity value S is as follows:

[0080] S = Pl offset ×0.5×K pl-offset (8)

[0081] Among them, Pl offset Compensation values ​​for the finishing mill rolling line, unit: mm; K pl-offsetThis is a correction factor, typically between 0.75 and 1.5. Since the temperature difference between the upper and lower legs of an H-beam is approximately 80-100℃ after universal rolling, and considering the relatively small coefficient of thermal expansion, this calculation does not require recalculation of the eccentricity value at room temperature.

[0082] (45) The specific formula for calculating the weight difference ΔM is as follows:

[0083] M w =S×ρ

[0084] S = W × (H - 2T) + 2B × T + 0.858r 2 (9)

[0085]

[0086] Among them, M W The weight per meter after universal rolling at room temperature is in kg / m; M is the standard weight per meter of the product, in kg / m; S is the cross-sectional area of ​​the H-beam, in mm. 2 ρ represents the density of steel, which is 7.85 g / cm³. 3 r is the radius of the fillet of the finishing mill roll, in mm.

[0087] The compensation value G for the horizontal roll gap of the finishing mill is manually input. H-uf-offset Gap compensation value of vertical rolls in finishing mill V-uf-offset Compensation value Pl of finishing mill rolling line offset Subsequently, the slab dimensions for each pass in the finishing rolling process are estimated, and these estimated dimensions are compared with the target dimensions. If the dimensions exceed the target dimensions, an early warning is issued to the operator. Before finishing rolling on the finishing mill, the operator adjusts the horizontal roll gap compensation value G of the finishing mill based on the early warning. H-uf-offset Gap compensation value of vertical rolls in finishing mill V-uf-offset And / or finishing mill rolling line compensation value P1 offset Taking a product with dimensions of 400x400x13x21 mm and steel grade Q235B as an example, and using a 9-pass universal rolling mill as an example, the target dimensions of the billet for each pass during the finishing mill rolling process are shown in Table 4.

[0088]

[0089] T, W, B, and H are the thermal dimensions. uf W uf B uf and H uf Dimensions at room temperature after conversion, T uf *、W uf *、B uf *、H uf *Represents the hot dimension T uf Wuf B uf and H uf The corresponding target values ​​are T*, W*, B*, and H*, which are the target values ​​for dimensions T, W, B, and H at room temperature, respectively.

[0090] Example 1: Taking a product with dimensions of 400x400x13x21 mm, steel grade Q235B, and 9 passes of universal rolling as an example.

[0091] (1) The size calculation system collects BD pass parameters, universal roll system parameters, universal rolling mill equipment parameters, rolling reduction procedures, product specifications, and product size execution standards.

[0092] (2) Operators modify the compensation value parameters on the primary screen based on production experience and actual operating conditions at the production site.

[0093] (3) If the operator modifies the roll gap compensation value of the first UR horizontal roll and inputs +2mm, the system will calculate and predict that the web size of the UR after this roll exceeds the target value, and there is a risk of the web thickness of the subsequent rolling passes and the web thickness of the last roll being out of tolerance.

[0094] (4) The size calculation system connects with the first-level screen, feeds back the calculation results to the operator and issues an early warning, suggesting that the horizontal roller gap compensation value be reduced.

[0095] (5) The operator reduces the UR horizontal roll gap compensation value as prompted, inputting +1mm. After calculation, the system predicts that the web size of the UR after this pass is within the target value range, and the web thickness of subsequent passes and the last pass is qualified. The system does not provide any prompts.

[0096] (6) Operators produce according to these compensation parameters, and the final product dimensions are qualified.

[0097] Example 2: Taking a product with dimensions of 700x300x13x24 mm, steel grade Q355B, and 9 passes of universal rolling as an example:

[0098] (1) The size calculation system collects BD pass parameters, universal roll system parameters, universal rolling mill equipment parameters, rolling reduction procedures, product specifications, and product size execution standards.

[0099] (2) The product size execution standard has been updated. The new requirement is that the finished flange thickness tolerance has been changed from ±1.7mm to ±1.0mm. Based on experience, the operator modifies the UF vertical roll gap compensation value for the last pass and inputs -0.7mm.

[0100] (3) The size calculation system calculates the roll gap parameters of the last UF vertical roll and predicts that there is a risk of out-of-tolerance in the flange size of the product at room temperature after UF rolling.

[0101] (4) The size calculation system connects with the first-level screen, feeds back the calculation results to the operator and issues an early warning, suggesting that the vertical roll gap compensation value be increased.

[0102] (5) The operator increases the roll gap compensation value of the last pass of UF vertical roll as prompted, inputting -0.5mm. The system recalculates and predicts, and all dimensions are qualified without prompting.

[0103] (6) Operators produce according to this compensation value parameter, and the final product size is qualified.

[0104] The present invention has been described by way of example. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A method for adjusting H-beam rolling parameters based on size prediction, characterized in that, The method includes the following steps: (1) Adjust the roll gap value of the billet mill based on the ratio coefficient α between the dimensions of the incoming material before roughing and the dimensions of the H-beam product, so that the ratio coefficient α is within the set value range; (2) Before the roughing, edge rolling and finishing rolling processes, adjust the roll gap of the corresponding rolls so that the estimated value of the billet size for each pass is within the allowable deviation range of the corresponding target size; The formula for calculating the proportionality coefficient α is as follows: α=(T1÷T2)÷(W1÷W2); Wherein, T1 is the average flange thickness of the incoming material from the universal rolling mill; W1 is the web thickness of the incoming material from the universal rolling mill; T2 is the flange thickness of the H-beam product; and W2 is the web thickness of the H-beam product.

2. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 1, characterized in that, If the proportionality coefficient α > 2, adjust the roll gap value of the billet mill to increase the web thickness of the universal roll material; if the proportionality coefficient α < 1, adjust the roll gap value of the billet mill to decrease the web thickness of the universal roll material, until the proportionality coefficient between the size of the universal roll material and the size of the H-beam product satisfies 1 < α < 2.

3. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 1, characterized in that, When the estimated billet size for each pass exceeds the allowable deviation range of the corresponding target size, an early warning is issued. Based on the early warning, the roll gap of the corresponding rolls is adjusted until the estimated billet size for each pass is within the allowable deviation range of the corresponding target size.

4. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 3, characterized in that, The specific method for adjusting the roll gap before the roughing process is as follows: Before roughing H-beam billets, the vertical and horizontal roll gaps of the roughing mill are adjusted to ensure that the flange thickness T in each pass during the roughing process is consistent. ur and web thickness W ur The estimated value is within the allowable deviation range of the corresponding target value.

5. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 3, characterized in that, The specific method for adjusting the roll gap before the edge rolling process is as follows: Before the edge rolling mill rolls the H-beam billet, the horizontal roll gap value of the edge rolling mill is adjusted so that the estimated billet width for each pass in the edge rolling process is within the allowable deviation range of the target width.

6. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 3, characterized in that, The specific method for adjusting the roll gap before the finishing rolling process is as follows: Before the universal finishing mill finishes the H-beam steel billet, the roll gap of the universal finishing mill is adjusted so that the estimated billet size for each pass in the finishing process is within the allowable deviation range of the target billet size. The dimensions of the billet include: flange thickness, web thickness, width, height, eccentricity, and weight per meter.

7. The method for adjusting H-beam rolling parameters based on size prediction as described in claim 6, characterized in that, The hot dimensions of the steel billet in the final pass of the finishing rolling process are converted to the room temperature dimensions. The specific conversion formula is as follows: Room temperature dimensions = hot dimensions × (measured temperature of the last billet pass - room temperature) × coefficient of thermal expansion of steel.

8. A rolling parameter adjustment system for H-beams based on size prediction, characterized in that, The system includes: Billet mill and hot-rolled H-beam universal rolling mill unit The billet mill, hot-rolled H-beam universal rolling mill unit, and PLC controller are connected for communication. The PLC controller adjusts the roll gap of the billet mill and the hot-rolled H-beam universal mill based on the H-beam rolling parameter adjustment method based on size prediction as described in any one of claims 1 to 7, so that the dimensions of the produced H-beams conform to the dimensions of the H-beam products.

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