A secondary cooling water distribution method for continuous casting sizing process

Abstract

This invention discloses a secondary cooling water distribution method for continuous casting sizing process, comprising: collecting the actual casting speed of the billet: V1, V2, ..., V n Based on the actual casting speed of the billet, according to the formula V 模拟 =A×V 模拟(n -1)+(1-A)×V n The simulated casting speed of the billet was calculated, where A is the weighting coefficient and V... 模拟(n -1) represents the simulated casting speed of the billet at the (n-1)th point, V n Let n be the actual casting speed at the nth point, where n is an integer greater than or equal to 1. Based on the simulated casting speed, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled. This application obtains the simulated casting speed by simulating the collected actual casting speed. The simulated casting speed has relatively small fluctuations compared to the actual casting speed. By distributing secondary cooling water to each cooling zone according to the simulated casting speed, the fluctuation of secondary cooling water volume can be reduced, thereby improving the uniformity of secondary cooling of the casting and improving the shape quality of the continuously cast billet.

Description

Technical Field

[0001] This invention relates to the field of continuous casting processing technology, and more specifically, to a secondary cooling water distribution method for continuous casting sizing process. Background Technology

[0002] The continuous casting process involves molten steel continuously flowing into the tundish, being mixed and divided in the tundish, and then injected into the crystallizer for cooling and solidification, resulting in an infinitely long billet. After being cut, the billet can be directly used for steel rolling production. In this process, the molten steel is cooled and solidified into a billet in the crystallizer, while the billet, with its core still in the liquid phase, is continuously pulled out from the crystallizer outlet and enters the billet support guide section. The heat transfer inside the billet is accelerated by spraying water, allowing the billet to completely solidify. This is the secondary cooling process in continuous casting.

[0003] However, the diameter of the molten steel flow channel in the tundish sizing slider is fixed, and the molten steel flow rate is greatly affected by fluctuations in the tundish liquid level. In addition, the casting speed for ordinary steel production in continuous casting is relatively fast, and the liquid level in the crystallizer is unstable, with casting speed fluctuations generally within ±0.15 m / min, and occasionally reaching ±0.30 m / min. According to the commonly used secondary cooling model Q = A × V + B or Q = A × V 2 The large fluctuations in casting speed (+B×V+C) lead to fluctuations in the secondary cooling water volume. The large and uneven fluctuations in the secondary cooling water volume worsen the shape quality of the continuously cast billet and make it easy for the billet to detach from the square.

[0004] In summary, how to provide a secondary cooling water distribution method for continuous casting sizing process that can improve the uniformity of secondary cooling of billet and improve the morphological quality of continuous casting billet is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a secondary cooling water distribution method for continuous casting sizing process, which can improve the uniformity of secondary cooling of billet and improve the shape quality of continuous casting billet.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A secondary cooling water distribution method for continuous casting sizing process, used to reduce the fluctuation of billet casting speed in each cooling zone of the secondary cooling zone, includes:

[0008] Collect the actual casting speed of the billet: V1, V2, ..., V n ;

[0009] Based on the actual casting speed of the billet, according to formula V 模拟 =A×V 模拟(n-1) +(1-A)×V n The simulated casting speed of the billet was calculated, where V 模拟The simulated casting speed for the billet is given by A, where A is a weighting coefficient and V is a weighting coefficient. 模拟(n-1) V is the simulated casting speed of the billet at the (n-1)th point. n The actual casting speed of the billet at the nth point is given, where n is an integer greater than or equal to 1;

[0010] Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled.

[0011] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0012] According to the formula Q=B×V 模拟 +C calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume, B and C are coefficients, and V... 模拟 Simulate the casting speed for the billet;

[0013] The secondary cooling water distribution in the corresponding cooling zone is controlled according to the total cooling water volume Q.

[0014] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0015] According to the formula Q=D×V 模拟 2 +E×V 模拟 +F calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume, D, E, and F are coefficients, and V... 模拟 Simulate the casting speed for the billet;

[0016] The secondary cooling water distribution in the corresponding cooling zone is controlled according to the total cooling water volume Q.

[0017] Preferably, the value of A is in the range of 0.6 to 0.9.

[0018] Preferably, the actual casting speed of the billet is: V1, V2, ..., V n The sampling interval is 1-3 seconds per sample.

[0019] Preferably, the secondary cooling zone is divided into a foot roller section cooling zone, a first-stage cooling zone, a second-stage cooling zone, and a third-stage cooling zone that are connected in sequence.

[0020] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0021] According to formula Q 足辊 =B 足辊 ×V 模拟 +C 足辊 , or, Q足辊 =D 足辊 ×V 模拟 2 +E 足辊 ×V 模拟 +F 足辊 Control the total cooling water volume in the cooling zone of the foot roller section;

[0022] Among them, Q 足辊 B is the total cooling water volume of the cooling zone of the foot roller section. 足辊 C 足辊 D 足辊 E 足辊 F 足辊 V is the coefficient corresponding to the cooling zone of the foot roller section. 模拟 The simulated casting speed for the billet is given.

[0023] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0024] According to formula Q 一段 =B 一段 ×V 模拟 +C 一段 , or, Q 一段 =D 一段 ×V 模拟 2 +E 一段 ×V 模拟 +F 一段 Control the total cooling water volume of the aforementioned cooling zone;

[0025] Among them, Q 一段 B represents the total cooling water volume of the aforementioned cooling zone. 一段 C 一段 D 一段 E 一段 F 一段 V is the coefficient corresponding to the aforementioned cooling zone. 模拟 The simulated casting speed for the billet is given.

[0026] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0027] According to formula Q 二段 =B 二段 ×V 模拟 +C 二段 , or, Q 二段 =D 二段 ×V 模拟 2 +E 二段 ×V 模拟 +F 二段Control the total cooling water volume of the two cooling zones;

[0028] Among them, Q 二段 B is the total cooling water volume of the two cooling zones. 二段 C 二段 D 二段 E 二段 F 二段 V is the coefficient corresponding to the two cooling zones. 模拟 The simulated casting speed for the billet is given.

[0029] Preferably, based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including:

[0030] According to formula Q 三段 =B 三段 ×V 模拟 +C 三段 , or, Q 三段 =D 三段 ×V 模拟 2 +E 三段 ×V 模拟 +F 三段 Control the total cooling water volume of the three cooling zones;

[0031] Among them, Q 三段 B represents the total cooling water volume of the three cooling zones. 三段 C 三段 D 三段 E 三段 F 三段 V represents the coefficient corresponding to the three cooling zones. 模拟 The simulated casting speed for the billet is given.

[0032] Compared to the aforementioned background technology, the secondary cooling water distribution method for continuous casting sizing process provided by this invention is used to reduce the fluctuation of billet casting speed in each cooling zone of the secondary cooling zone. This is achieved by collecting the actual billet casting speeds V1, V2, ..., V in the continuous casting machine. n Then, based on the actual casting speed of the billet, the mathematical model V... 模拟 =A×V 模拟(n-1) +(1-A)×V n The simulated casting speed can be obtained at a more stable rate than the actual casting speed. Finally, the simulated casting speed V is... 模拟 It is applied to the total cooling water volume Q control model to control the total cooling water volume of each cooling zone in the secondary cooling zone.

[0033] Therefore, this application obtains the simulated casting speed of the billet by simulating the actual casting speed of the billet. The simulated casting speed of the billet fluctuates less than the actual casting speed of the billet. According to the simulated casting speed of the billet, secondary cooling water is distributed to each cooling zone, which can reduce the fluctuation of secondary cooling water volume, thereby improving the uniformity of secondary cooling of the billet and improving the shape quality of the continuous casting billet. Attached Figure Description

[0034] 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 A flowchart of a secondary cooling water distribution method for a continuous casting sizing process provided by the present invention;

[0036] Figure 2 This invention provides a secondary cooling zone layout diagram for a secondary cooling water distribution method in continuous casting sizing process.

[0037] Figure 3 The curves of actual casting speed and simulated casting speed of the billet are collected in the secondary cooling water distribution method of the continuous casting sizing process provided by the present invention.

[0038] In the picture:

[0039] 1 is the secondary cooling main pipe, 2 is the foot roller section cooling zone, 3 is the first cooling zone, 4 is the second cooling zone, and 5 is the third cooling zone. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The core of this invention is to provide a secondary cooling water distribution method for continuous casting sizing process. This secondary cooling water distribution method can improve the uniformity of secondary cooling of the billet and improve the shape quality of the continuous casting billet.

[0042] Please refer to Figure 1 This application provides a secondary cooling water distribution method for continuous casting sizing process, used to reduce the fluctuation of billet casting speed in each cooling zone of the secondary cooling zone. Specific steps include:

[0043] Step S1: Collect the actual casting speed of the billet: V1, V2, ..., V n ;

[0044] Step S2: Based on the actual casting speed of the billet, according to formula V 模拟 =A×V 模拟(n-1) +(1-A)×V n The simulated casting speed of the billet was calculated, where A is the weighting coefficient and V... 模拟(n-1) V is the simulated casting speed for the billet at point n-1. n The actual casting speed of the billet at the nth point is given, where n is an integer greater than or equal to 1.

[0045] Step S3: Based on the simulated casting speed of the billet, control the total cooling water volume Q of each cooling zone in the secondary cooling zone.

[0046] Specifically, by collecting the actual casting speeds V1, V2, ..., V in the continuous casting machine... n Then, based on the actual casting speed of the billet, the mathematical model V... 模拟 =A×V 模拟(n-1) +(1-A)×V n The simulated casting speed can be obtained at a more stable rate than the actual casting speed. Finally, the simulated casting speed V is... 模拟 It is applied to the total cooling water volume Q control model to control the total cooling water volume of each cooling zone in the secondary cooling zone.

[0047] Therefore, this application obtains an exponentially weighted simulated casting speed by simulating the actual casting speed of the collected billet. The simulated casting speed fluctuates less than the actual casting speed. By distributing secondary cooling water to each cooling zone according to the simulated casting speed, the fluctuation of secondary cooling water volume can be reduced, thereby improving the uniformity of secondary cooling of the billet and improving the shape quality of the continuously cast billet.

[0048] Preferably, the weighting coefficient A ranges from 0.6 to 0.9, resulting in smaller fluctuations in the simulated casting speed. Figure 3 The curves showing the actual casting speed and simulated casting speed of the billet are optimized with a weighting coefficient A of 0.8, resulting in a more stable simulated casting speed.

[0049] Preferably, the actual casting speeds V1, V2, ..., V... n The data collection time interval is 1-3 seconds per sample. Figure 2 The curves showing the actual casting speed and simulated casting speed of the billet are shown. When the optimal acquisition time interval is 1 second / cycle and A is 0.8, the simulated casting speed of the billet is more stable.

[0050] Based on the above embodiments, the secondary cooling zone is divided into a foot roller section cooling zone, a first cooling zone, a second cooling zone, and a third cooling zone that are connected in sequence.

[0051] Specifically, such as Figure 2 As shown, the secondary cooling zone is divided into four cooling zones, which are commonly used in the continuous casting production of small billets. The four cooling zones are foot roll section cooling zone 2, first-stage cooling zone 3, second-stage cooling zone 4, and third-stage cooling zone 5. The four cooling zones are connected in sequence. The secondary cooling zone is equipped with a secondary cooling main pipe 1, which is connected to the cooling branch pipes installed in the corresponding foot roll section cooling zone 2, first-stage cooling zone 3, second-stage cooling zone 4, and third-stage cooling zone 5. Each cooling branch pipe is equipped with an electric or pneumatic regulating valve, which is connected to a controller. The controller adjusts the valve opening on each cooling branch pipe according to the cooling water volume of each cooling zone.

[0052] Optionally, the number of cooling zones in the secondary cooling zone division of this application is not unique. According to the layout characteristics of the secondary cooling zone, the secondary cooling zone can be divided into five cooling zones, such as foot roll section cooling zone 2, first-stage cooling zone 3, second-stage cooling zone 4, third-stage cooling zone 5, and fourth-stage cooling zone, which are commonly used in rectangular billet continuous casting and slab continuous casting production.

[0053] Based on the above embodiments, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled based on the simulated casting speed of the billet. The specific steps include:

[0054] According to the formula Q=B×V 模拟 +C calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume. B and C are specifically designed based on the steel grade, casting speed, and cooling method of the continuous casting machine. Specific parameters can be found in Table 1 below. 模拟 Simulate casting speed for billet;

[0055] The secondary cooling water distribution in the corresponding cooling zone is controlled according to the total cooling water volume Q.

[0056] It should be noted that the above-mentioned secondary cooling model is generally applicable to small billet continuous casting machines. The model in Table 1 is the secondary cooling water distribution model for a 160mm×160mm cross-section small billet continuous casting machine. This secondary cooling water distribution model is a control model for casting speeds V≥1.0m / min. When the casting speed V<1.0m / min, a water flow control of 1.0m / min is implemented.

[0057] Table 1 Secondary Cooling Model: Q = B × V 模拟 +C

[0058] B C foot roller 99.56 20.27 A section 117.2 21.1 Second section 77 -11.9 Three sections 59.3 -12.7

[0059] Preferably, according to formula Q 足辊 =B 足辊 ×V 模拟 +C 足辊 Control the total cooling water volume in the foot roller section cooling zone, where Q足辊 B represents the total cooling water volume in the foot roller section cooling zone. 足辊 C 足辊 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0060] Preferably, according to formula Q 一段 =B 一段 ×V 模拟 +C 一段 Control the total cooling water volume of a cooling zone, where Q 一段 B represents the total cooling water volume of a cooling zone. 一段 C 一段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0061] Preferably, according to formula Q 二段 =B 二段 ×V 模拟 +C 二段 Control the total cooling water volume of the two-stage cooling zone, where Q 二段 B represents the total cooling water volume of the two-stage cooling zone. 二段 C 二段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0062] Preferably, according to formula Q 三段 =B 三段 ×V 模拟 +C 三段 Control the total cooling water volume of the three cooling zones, where Q 三段 B represents the total cooling water volume of the three cooling zones. 三段 C 三段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0063] Based on the above embodiments, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled based on the simulated casting speed of the billet, including:

[0064] According to the formula Q=D×V 模拟 2 +E×V 模拟 +F calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume, and D, E, and F are specifically designed based on the steel grade, casting speed, and cooling method of the continuous casting machine. Specific parameters can be found in Table 2 below. 模拟 Simulate casting speed for billet;

[0065] The secondary cooling water distribution in the corresponding cooling zone is controlled according to the total cooling water volume Q.

[0066] It should be noted that the above-mentioned secondary cooling model is not only applicable to small billet continuous casting machines, but also to rectangular billet continuous casting machines and slab continuous casting machines. The model in Table 2 is the secondary cooling water distribution model for a 240mm×375mm cross-section rectangular billet continuous casting machine. This secondary cooling water distribution model is a control model for casting speeds V≥0.4m / min. When the casting speed V<0.4m / min, a water flow control of 0.4m / min is implemented.

[0067] Table 2 Secondary Cooling Model: Q=D×V 模拟 2 +E×V 模拟 +F

[0068] D E F foot roller 0.42 6.63 -0.67 A section -1.6 7.94 -1.14 Second section -0.99 6.71 -1.42 Three sections 1.15 3.38 -1.04 Four sections 2.28 0.1 -0.28

[0069] Additionally, it should be noted that the secondary cooling model (parameter control method) is: Q = D × V 模拟 2 +E×V 模拟 +F is superior to the secondary cooling model (proportional control method): Q=B×V 模拟 +C, where, when the proportional control method is used for water distribution, the total cooling water volume is proportional to the simulated casting speed of the billet, and the total cooling water volume is greatly affected by the simulated casting speed of the billet. However, when the parameter control method is used for water distribution, the total cooling water volume and the simulated casting speed of the billet have a quadratic curve transformation relationship. When the simulated casting speed of the billet changes, the corresponding parameters D, E, and F can be adjusted first to control the total cooling water volume, so as to reduce the impact of the fluctuation of the simulated casting speed of the billet on the total cooling water volume, thereby further reducing the fluctuation of the cooling water volume and improving the shape quality of the continuously cast billet.

[0070] Preferably, to ensure stable fluctuations in the cooling water volume of the foot roller section cooling zone, according to formula Q... 足辊 =D 足辊 ×V 模拟 2 +E 足辊 ×V 模拟 +F 足辊 Control the total cooling water volume in the foot roller section cooling zone, where Q 足辊 D represents the total cooling water volume in the foot roller section cooling zone. 足辊 E 足辊 F 足辊 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0071] Preferably, to ensure stable cooling water flow in a cooling zone, according to formula Q... 一段 =D 一段 ×V 模拟 2 +E 一段 ×V模拟 +F 一段 Control the total cooling water volume of a cooling zone, where Q 一段 D represents the total cooling water volume of a cooling zone. 一段 E 一段 F 一段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0072] Preferably, to ensure stable cooling water flow in the two-stage cooling zone, according to formula Q... 二段 =D 二段 ×V 模拟 2 +E 二段 ×V 模拟 +F 二段 Control the total cooling water volume of the two-stage cooling zone, where Q 二段 D represents the total cooling water volume of the two-stage cooling zone. 二段 E 二段 F 二段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0073] Preferably, to ensure stable cooling water flow in the three cooling zones, according to formula Q... 三段 =D 三段 ×V 模拟 2 +E 三段 ×V 模拟 +F 三段 Control the total cooling water volume of the three cooling zones, where Q 三段 D represents the total cooling water volume of the three cooling zones. 三段 E 三段 F 三段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0074] Preferably, to ensure stable cooling water flow in the four cooling zones, according to formula Q... 四段 =D 四段 ×V 模拟 2 +E 四段 ×V 模拟 +F 四段 Control the total cooling water volume of the four cooling zones, where Q 四段 D represents the total cooling water volume of the three cooling zones. 四段 E 四段 F 四段 V is determined based on different steel grades and cross-sectional dimensions. 模拟 Simulate casting speed for billet.

[0075] This application is applicable to the production of various types of billets. By simulating the actual casting speed of the collected billets, a stable simulated casting speed is obtained. Secondary cooling water is distributed according to the simulated casting speed. The secondary cooling water volume of each cooling zone fluctuates little. The controller controls the valve opening according to the cooling water volume of each cooling zone, which can improve the uniformity of secondary cooling of the billets and improve the shape quality of the continuously cast billets.

[0076] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0077] The secondary cooling water distribution method for continuous casting sizing process provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A secondary cooling water distribution method for continuous casting sizing process, used to reduce the fluctuation of billet casting speed in each cooling zone of the secondary cooling zone, characterized in that, include: Collect the actual casting speed of the billet: V1, V2, ..., V n ; Based on the actual casting speed of the billet, according to formula V 模拟 =A×V 模拟（n-1） +(1-A)×V n The simulated casting speed of the billet was calculated, where V 模拟 The simulated casting speed for the billet is given by V, where A is a weighting coefficient, and the value of A ranges from 0.6 to 0.

9. 模拟（n-1） V is the simulated casting speed of the billet at the (n-1)th point. n The actual casting speed of the billet at the nth point is given, where n is an integer greater than or equal to 1; Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including: According to the formula Q=B×V 模拟 +C calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume, B and C are coefficients, and V... 模拟 Simulate the casting speed for the billet; Control the secondary cooling water distribution in the corresponding cooling zone according to the total cooling water volume Q; Alternatively, according to the formula Q=D×V 模拟 2 +E×V 模拟 +F calculates the total cooling water volume for each cooling zone, where Q is the total cooling water volume, D, E, and F are coefficients, and V... 模拟 Simulate the casting speed for the billet; The secondary cooling water distribution in the corresponding cooling zone is controlled according to the total cooling water volume Q.

2. The secondary cooling water distribution method for continuous casting sizing process according to claim 1, characterized in that, The actual casting speed of the billet: V1, V2, ..., V n The sampling interval is 1-3 seconds per sample.

3. The secondary cooling water distribution method for continuous casting sizing process according to claim 1 or 2, characterized in that, The secondary cooling zone is divided into a foot roller section cooling zone, a first-stage cooling zone, a second-stage cooling zone, and a third-stage cooling zone, which are connected in sequence.

4. The secondary cooling water distribution method for continuous casting sizing process according to claim 3, characterized in that, Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including: According to formula Q 足辊 =B 足辊 ×V 模拟 +C 足辊 , or, Q 足辊 =D 足辊 ×V 模拟 2 +E 足辊 ×V 模拟 +F 足辊 Control the total cooling water volume in the cooling zone of the foot roller section; Among them, Q 足辊 B is the total cooling water volume of the cooling zone of the foot roller section. 足辊 C 足辊 D 足辊 E 足辊 F 足辊 V is the coefficient corresponding to the cooling zone of the foot roller section. 模拟 The simulated casting speed for the billet is given.

5. The secondary cooling water distribution method for continuous casting sizing process according to claim 3, characterized in that, Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including: According to formula Q 一段 =B 一段 ×V 模拟 +C 一段 , or, Q 一段 =D 一段 ×V 模拟 2 +E 一段 ×V 模拟 +F 一段 Control the total cooling water volume of the aforementioned cooling zone; Among them, Q 一段 B represents the total cooling water volume of the aforementioned cooling zone. 一段 C 一段 D 一段 E 一段 F 一段 V is the coefficient corresponding to the aforementioned cooling zone. 模拟 The simulated casting speed for the billet is given.

6. The secondary cooling water distribution method for continuous casting sizing process according to claim 3, characterized in that, Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including: According to formula Q 二段 =B 二段 ×V 模拟 +C 二段 , or, Q 二段 =D 二段 ×V 模拟 2 +E 二段 ×V 模拟 +F 二段 Control the total cooling water volume of the two cooling zones; Among them, Q 二段 B is the total cooling water volume of the two cooling zones. 二段 C 二段 D 二段 E 二段 F 二段 V is the coefficient corresponding to the two cooling zones. 模拟 The simulated casting speed for the billet is given.

7. The secondary cooling water distribution method for continuous casting sizing process according to claim 3, characterized in that, Based on the simulated casting speed of the billet, the total cooling water volume Q of each cooling zone in the secondary cooling zone is controlled, including: According to formula Q 三段 =B 三段 ×V 模拟 +C 三段 , or, Q 三段 =D 三段 ×V 模拟 2 +E 三段 ×V 模拟 +F 三段 Control the total cooling water volume of the three cooling zones; Among them, Q 三段 B represents the total cooling water volume of the three cooling zones. 三段 C 三段 D 三段 E 三段 F 三段 V represents the coefficient corresponding to the three cooling zones. 模拟 The simulated casting speed for the billet is given.

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