Checkered plate rolling system and method based on CVC roll shape optimization

Abstract

The invention relates to a checkered plate rolling system and method based on CVC roll shape optimization, and belongs to the technical field of metal rolling, and the checkered plate rolling system comprises a roughing mill set which adopts a roll shape system of a first CVC curve and is used for eliminating the initial convexity of a casting blank; the finishing mill group adopts a roll type system of a second CVC curve and is used for enhancing the plate shape fine adjustment capability; and the industrial computer is used for receiving target curve parameter input and calculating radius increment of each point of the roll surface so as to control the roughing mill group and the finishing mill group to carry out profiling grinding. According to the rolling system with the optimized CVC roll shape, fine adjustment can be conducted in the whole rolling process, and more adaptability is provided for diversified product requirements.

Description

Technical Field

[0001] This invention relates to the field of metal rolling technology, and specifically to a patterned plate rolling system and method based on CVC roll profile optimization. Background Technology

[0002] Patterned steel sheets are widely used in construction, transportation, machinery, and other fields. As a material with excellent anti-slip, decorative, and wear-resistant properties, the production quality and efficiency of patterned steel sheets directly affect their performance and market competitiveness. Traditional patterned steel sheet rolling technology typically employs hot rolling or cold rolling processes, using specific roll shapes and pressures to form patterns.

[0003] In traditional roll grinding technology, the CVC roll profile polynomial coefficients are fixed, which cannot adapt to the special deformation requirements of patterned plates. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this invention is to provide a patterned plate rolling system and method based on CVC roll profile optimization.

[0005] A patterned plate rolling system based on CVC roll profile optimization includes:

[0006] The roughing mill adopts a roll profile system based on a first CVC curve to eliminate the initial crown of the billet; wherein, the first CVC curve is: R1(x) = a1x + b1x² + c1x³; where x is the grinding path point, R1(x) represents the radius increment of point x in the roughing mill; a1, b1 and c1 represent curve parameters;

[0007] The finishing mill adopts a roll profile system based on the second CVC curve to enhance the ability to fine-tune the plate shape; wherein, the second CVC curve is: R2(x) = a2x + b2x² + c2x³; R2(x) represents the radius increment at point x in the finishing mill;

[0008] An industrial computer is used to control the roughing mill and the finishing mill to perform profile grinding.

[0009] Preferably, a1≠a2, |b1-b2|>0.5, |c1-c2|>1×10⁻ 6 .

[0010] Preferably, the roughing mill unit includes F1 mill, F2 mill, F3 mill and F4 mill.

[0011] Preferably, the finishing mill unit includes F5 mill, F6 mill, F7 mill and F8 mill.

[0012] Preferably, the working crown of all stand rolls is consistent with the crown of F6 roll, with a value range of [0.10mm, 0.15mm].

[0013] A method for rolling patterned steel plates based on CVC roll profile optimization includes:

[0014] Input the target curve parameters into the industrial computer;

[0015] The radius increments at each point on the roll surface are calculated based on the first CVC curve of the roughing mill and the second CVC curve of the finishing mill. The first CVC curve is: R1(x) = a1x + b1x² + c1x³, where x is a grinding path point, R1(x) represents the radius increment at point x in the roughing mill, and a1, b1, and c1 represent curve parameters. The second CVC curve is: R2(x) = a2x + b2x² + c2x³, where R2(x) represents the radius increment at point x in the finishing mill.

[0016] The roughing mill and the finishing mill are controlled to perform profile grinding according to the calculated values.

[0017] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0018] This invention relates to a patterned plate rolling system and method based on CVC roll profile optimization. Compared with the prior art, the present invention uses a CVC roll profile optimized rolling system, which can make fine adjustments throughout the rolling process, providing greater adaptability to diverse product requirements.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A block diagram of a patterned plate rolling system based on CVC roll profile optimization is provided for this invention;

[0022] Figure 2 Comparison images of the patterned plate surface provided by this invention. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Please see Figure 1 A patterned plate rolling system based on CVC roll profile optimization, comprising:

[0027] The roughing mill unit includes stands F1-F4. The roughing mill unit adopts a roll profile system with a first CVC curve to eliminate the initial crown of the billet. The first CVC curve is: R1(x) = a1x + b1x² + c1x³, where x is the grinding path point, R1(x) represents the radius increment of point x in the roughing mill unit, and a1, b1, and c1 represent curve parameters.

[0028] The finishing mill, including stands F5-F7, adopts a roll profile system based on the second CVC curve to enhance the ability to fine-tune the strip shape; wherein, the second CVC curve is: R2(x) = a2x + b2x² + c2x³; R2(x) represents the radius increment at point x in the finishing mill;

[0029] An industrial computer is used to receive target curve parameter inputs and calculate the radius increments at various points on the roll surface in order to control the roughing mill and the finishing mill to perform profile grinding.

[0030] Where a1≠a2, |b1-b2|>0.5, |c1-c2|>1×10⁻ 6 In this embodiment of the invention, a = 0.0017 ± 0.0002, b = -2.0775 × 10⁻ 6 ±5%, c=7.0129×10⁻¹ 0 ±5%.

[0031] The working crown of all stand rolls is consistent with that of F6 rolls, with a value range of [0.10mm, 0.15mm].

[0032] The working principle of the present invention will be explained below with reference to specific embodiments:

[0033] Example 1: CVC Roller System Structure Configuration

[0034] Step 1: Roll Grouping and Curve Design: F1-F4 Roughing Mills: Using the first CVC curve: R1(x) = 0.0017x - 2.0775×10⁻ 6 x² + 7.0129×10⁻¹ 0 The x³ crown value is uniformly set to 0.12mm (consistent with F6 rolls). For the F5-F7 finishing mills: the second CVC curve is adopted: R2(x) = 0.0021x - 1.852×10⁻ 6 x² + 9.417×10⁻¹ 0 x³, with a convexity value of 0.12mm and a tolerance control of ±0.005mm.

[0035] Technical principle: The roughing mill curve (R1) focuses on eliminating the initial crown of the billet, while the finishing mill curve (R2) enhances the ability to fine-tune the plate shape. The coefficient difference is determined through finite element simulation optimization.

[0036] Step 2: Grinding process execution

[0037] 1. Input the target curve parameters into the grinding machine CNC system: Grinding machine control command generation example (F1-F4 units): a1 = 0.0017, unit: mm / mm; b1 = -2.0775e-6 # unit: 1 / mm²; c1 = 7.0129e-10, unit: 1 / mm³

[0038] 2. The grinding machine calculates the radius increment of each point on the roller surface in real time according to the equation ΔR(x)= a1*x+b1*x²+c1*x³.

[0039] 3. The grinding wheel performs contour grinding according to the calculated values, with an axial resolution of 0.1 mm and an accuracy of ±0.001 mm. The final result is as follows: Figure 2 As stated above.

[0040] Example 2: Dynamic Grinding Control Method

[0041] Step 1: Polynomial coefficient optimization input. Set parameters on the industrial computer input interface:

[0042] parameter Value Allowable fluctuation range a 0.0017 ±0.0002 b <![CDATA[-2.0775×10⁻ 6 ]]> ±5% c <![CDATA[7.0129×10⁻¹ 0 ]]> ±5%

[0043] Step 2: Grinding data is generated in real time. The system automatically discretizes the polynomial equation into grinding path points and generates grinding machine G-code according to the CVC curve method.

[0044] Step 3: Unify the crowning of multiple stands, with all rolls of all units using the F6 roll as the reference. Set the target crowning to 0.12mm, and use an online laser measuring instrument for real-time feedback. If the measured crowning deviation is >0.01mm, a second fine grinding will be automatically triggered.

[0045] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A patterned plate rolling system based on CVC roll profile optimization, characterized in that, include: The roughing mill adopts a roll profile system based on a first CVC curve to eliminate the initial crown of the billet; wherein, the first CVC curve is: R1(x) = a1x + b1x² + c1x³; where x is the grinding path point, R1(x) represents the radius increment of point x in the roughing mill; a1, b1 and c1 represent curve parameters; The finishing mill adopts a roll profile system based on the second CVC curve to enhance the ability to fine-tune the plate shape; wherein, the second CVC curve is: R2(x) = a2x + b2x² + c2x³; R2(x) represents the radius increment at point x in the finishing mill; An industrial computer is used to control the roughing mill and the finishing mill to perform profile grinding.

2. The patterned plate rolling system based on CVC roll profile optimization according to claim 1, characterized in that, a1≠a2, |b1-b2|>0.5, |c1-c2|>1×10⁻ 6 。 3. The patterned plate rolling system based on CVC roll profile optimization according to claim 2, characterized in that, The roughing mill unit includes F1 mill, F2 mill, F3 mill and F4 mill.

4. The patterned plate rolling system based on CVC roll profile optimization according to claim 3, characterized in that, The finishing mill unit includes F5 mill, F6 mill, F7 mill and F8 mill.

5. A patterned plate rolling system based on CVC roll profile optimization according to claim 4, characterized in that, The working crown of all stand rolls is consistent with that of F6 rolls, with a value range of [0.10mm, 0.15mm].

6. A method for rolling patterned steel plates based on CVC roll profile optimization, comprising: Input the target curve parameters into the industrial computer; The radius increments at each point on the roll surface are calculated based on the first CVC curve of the roughing mill and the second CVC curve of the finishing mill. The first CVC curve is: R1(x) = a1x + b1x² + c1x³, where x is a grinding path point, and R1(x) represents the radius increment at point x in the roughing mill; a1, b1, and c1 represent curve parameters. The second CVC curve is: R2(x) = a2x + b2x² + c2x³, where R2(x) represents the radius increment at point x in the finishing mill. The roughing mill and the finishing mill are controlled to perform profile grinding according to the calculated values.

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