Control methods, devices, and electronic equipment for reducing double-tail failures in sheet roll boxes

Abstract

This application relates to the field of steel rolling technology and discloses a control method, device, and electronic equipment for reducing double-tail failures in a plate and coil box. The method includes: obtaining the steel grade hardness, length, width, and thickness of a continuously cast billet; obtaining the width and thickness of an intermediate billet; determining the initial coil length of the intermediate billet steel coil based on the width of the continuously cast billet and the width of the intermediate billet; determining the initial coil diameter of the intermediate billet steel coil based on the initial coil length; uncoiling the intermediate billet steel coil through the plate and coil box and obtaining the uncoiling diameter of the intermediate billet steel coil, wherein the uncoiling diameter is the remaining coil diameter of the intermediate billet steel coil; and controlling the insertion of the uncoiling pin of the plate and coil box into the coil eye of the intermediate billet steel coil based on the thickness of the intermediate billet and the uncoiling diameter. The technical solution proposed in this application can accurately determine the insertion time of the uncoiling pin, reducing double-tail failures caused by inaccurate insertion time of the uncoiling pin.

Description

Technical Field

[0001] This application relates to the field of steel rolling technology and discloses a control method, device and electronic equipment for reducing double-tail failures in plate and coil boxes. Background Technology

[0002] The coil box is installed in the finishing mill entrance area to coil the intermediate billet from the roughing mill without a core, and then uncoil it before entering the finishing mill. During the uncoiling process, as the coil diameter decreases, the coil moves forward to the uncoiling pin area. When uncoiling is almost complete, the uncoiling pin needs to be inserted into the coil eye to straighten the tail and prevent it from overlapping and causing a double tail. If the uncoiling pin is inserted too early, before the steel coil has reached this area, the uncoiling pin will be inserted outside the coil eye, resulting in a double tail; if the uncoiling pin is inserted too late, the uncoiling will be completed without the uncoiling pin being inserted, also resulting in a double tail. Accurately calculating the coil diameter and precisely controlling the insertion time of the uncoiling pin is crucial in actual production. However, existing technical solutions often cause double tail problems due to inaccurate insertion time of the uncoiling pin. Based on this, this application proposes a control method to reduce double tail failures in the coil box, which can accurately calculate the coil diameter and precisely determine the insertion time of the uncoiling pin, reducing double tail failures caused by inaccurate insertion time of the uncoiling pin. Summary of the Invention

[0003] This application relates to the field of steel rolling technology, and discloses a control method, device, and electronic equipment for reducing double-tail failures in coil unwinding boxes. It can accurately determine the insertion time of the unwinding pin, reducing double-tail failures caused by inaccurate pin insertion timing.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0005] According to a first aspect of the embodiments of this application, a control method for reducing double-tail failures in a plate and coil box is provided. The method includes: obtaining the steel grade hardness, continuous casting billet length, continuous casting billet width, and continuous casting billet thickness of a continuously cast billet; obtaining the intermediate billet width and intermediate billet thickness of an intermediate billet, wherein the intermediate billet is obtained by rough rolling of the continuously cast billet; determining the initial coil length of the intermediate billet steel coil based on the continuous casting billet width and the intermediate billet width, wherein the intermediate billet steel coil is obtained by coiling the intermediate billet through a plate and coil box; determining the initial coil diameter of the intermediate billet steel coil based on the initial coil length; performing uncoiling processing on the intermediate billet steel coil through the plate and coil box, and obtaining the uncoiling diameter of the intermediate billet steel coil, wherein the uncoiling diameter is the remaining coil diameter of the intermediate billet steel coil; and controlling the uncoiling pin of the plate and coil box to insert into the coil eye of the intermediate billet steel coil based on the intermediate billet thickness and the uncoiling diameter.

[0006] In one embodiment of this application, based on the foregoing scheme, the method further includes: determining the diameter of the coil eye of the intermediate billet steel coil based on the hardness of the steel grade of the continuously cast billet.

[0007] In one embodiment of this application, based on the aforementioned scheme, determining the eye diameter of the intermediate billet steel coil based on the hardness of the steel grade of the continuously cast billet includes: if the continuously cast billet is hard steel, the eye diameter of the intermediate billet steel coil ranges from 615 to 625 mm; if the continuously cast billet is ordinary steel, the eye diameter of the intermediate billet steel coil ranges from 595 to 605 mm; if the continuously cast billet is mild steel, the eye diameter of the intermediate billet steel coil ranges from 575 to 585 mm.

[0008] In one embodiment of this application, based on the foregoing scheme, determining the initial coil diameter of the intermediate billet coil based on the initial coil length includes: obtaining the interlayer coefficient of the intermediate billet coil, the interlayer coefficient being used to characterize the compactness of the intermediate billet coil; and determining the initial coil diameter of the intermediate billet coil based on the interlayer coefficient, the intermediate billet thickness, the initial coil length, and the coil eye diameter.

[0009] In one embodiment of this application, based on the foregoing scheme, the initial coil diameter of the intermediate billet steel coil is determined by the following formula:

[0010]

[0011] Wherein, D is the initial coil diameter of the intermediate billet, λ is the interlayer coefficient, H is the thickness of the intermediate billet, L is the initial coil length, and r is the eye diameter.

[0012] In one embodiment of this application, based on the foregoing scheme, determining the initial coil length of the intermediate billet steel coil based on the width of the continuously cast billet and the width of the intermediate billet includes: obtaining a first product of the length of the continuously cast billet, the width of the continuously cast billet, and the thickness of the continuously cast billet; obtaining a second product of the width of the intermediate billet and the thickness of the intermediate billet; calculating the ratio of the first product and the second product, and using the ratio as the initial coil length of the intermediate billet steel coil.

[0013] In one embodiment of this application, based on the foregoing scheme, obtaining the uncoiling diameter of the intermediate billet steel coil includes: obtaining the uncoiling length of the intermediate billet steel coil, wherein the uncoiling length is the remaining length of the intermediate billet steel coil; determining the remaining diameter of the intermediate billet steel coil based on the uncoiling length, the intermediate billet thickness, the interlayer coefficient, and the eye diameter, and using the remaining diameter as the uncoiling diameter of the intermediate billet steel coil.

[0014] In one embodiment of this application, based on the aforementioned scheme, controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil based on the intermediate billet thickness and the uncoiling diameter includes: if the intermediate billet thickness is greater than or equal to a set thickness threshold, and the uncoiling diameter is less than a first uncoiling diameter threshold, then controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil; if the intermediate billet thickness is less than the set thickness threshold, and the uncoiling diameter is less than a second uncoiling diameter threshold, then controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil.

[0015] According to a second aspect of the embodiments of this application, a control device for reducing double-tail failures in a plate and coil box is provided. The device includes: a first acquisition unit, configured to acquire the steel grade hardness, continuous casting billet length, continuous casting billet width, and continuous casting billet thickness of a continuously cast billet; a second acquisition unit, configured to acquire the intermediate billet width and intermediate billet thickness of an intermediate billet, the intermediate billet being obtained by rough rolling of the continuously cast billet; a first determination unit, configured to determine the initial coil length of the intermediate billet steel coil based on the continuous casting billet width and the intermediate billet width, the intermediate billet steel coil being obtained by coiling the intermediate billet through a plate and coil box; a second determination unit, configured to determine the initial coil diameter of the intermediate billet steel coil based on the initial coil length; a third acquisition unit, configured to uncoil the intermediate billet steel coil through the plate and coil box and acquire the uncoiling diameter of the intermediate billet steel coil, the uncoiling diameter being the remaining coil diameter of the intermediate billet steel coil; and a control unit, configured to control the insertion of the uncoiling pin of the plate and coil box into the coil eye of the intermediate billet steel coil based on the intermediate billet thickness and the uncoiling diameter.

[0016] According to a third aspect of the embodiments of this application, an electronic device is provided, the electronic device including one or more processors and one or more memories, the one or more memories storing at least one piece of program code, the at least one piece of program code being loaded and executed by the one or more processors to implement the control method for reducing double-tail faults in roll box as described in any of the above embodiments.

[0017] In the technical solution proposed in this application, the hardness, length, width, and thickness of the continuously cast billet are obtained, and the width and thickness of the intermediate billet are also obtained. Based on the width of the continuously cast billet and the width of the intermediate billet, the initial coil length of the intermediate billet steel coil is determined. Based on the initial coil length, the initial coil diameter of the intermediate billet steel coil is determined. The intermediate billet steel coil is uncoiled through the plate coil box, and the uncoiling diameter of the intermediate billet steel coil is obtained. Based on the thickness of the intermediate billet and the uncoiling diameter, the insertion of the unwinding pin of the plate coil box into the coil eye of the intermediate billet steel coil is controlled. The technical solution proposed in this application can accurately determine the insertion time of the unwinding pin, reducing the double-tail failure caused by inaccurate insertion time of the unwinding pin.

[0018] The one or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0019] The technical solution proposed in this application can set the size of the coil eye of the steel coil obtained by the intermediate billet through the coiling process according to the hardness layer of the steel grade of the continuously cast billet.

[0020] The technical solution proposed in this application can calculate the length of the steel coil obtained by the intermediate billet through the coiling process based on the size of the continuously cast billet slab, thereby improving the accuracy of calculating the length and diameter of the steel coil.

[0021] The technical solution proposed in this application can differentiate the insertion time of the opening pin according to different intermediate billet thicknesses, thereby solving the double-tail failure caused by inaccurate insertion time of the opening pin.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0024] Figure 1 A flowchart of a control method for reducing double-tail faults in a roll box according to an embodiment of this application is shown;

[0025] Figure 2 This paper shows a graph illustrating the relationship between the intermediate billet length and the initial roll diameter during the intermediate billet winding process in a specific embodiment of this application.

[0026] Figure 3 A block diagram of a control device for reducing double-tail failures in a roll box according to an embodiment of this application is shown;

[0027] Figure 4 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0028] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0030] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0031] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0032] It should be noted that "multiple" in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0034] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0035] Figure 1 A flowchart of a control method for reducing double-tail faults in a plate roll box according to an embodiment of this application is shown.

[0036] like Figure 1 As shown, the control method for reducing double-tail failures in the roll box includes at least steps 110 to 160.

[0037] The following will be about Figure 1Steps 110 to 160 are described in detail below:

[0038] In step 110, the steel grade hardness, length, width, and thickness of the continuously cast billet are obtained.

[0039] In this application, the steel grade hardness, length, width, and thickness of the continuously cast billet can be obtained through a secondary control system in the strip steel production line. The secondary control system can be a PLC control system in the strip steel production line.

[0040] In this application, the hardness of the steel grade of the continuously cast billet can be determined by the type of steel grade of the continuously cast billet or by the carbon content of the continuously cast billet. The hardness of the continuously cast billet is positively correlated with the carbon content. The higher the carbon content of the continuously cast billet, the greater the hardness of the continuously cast billet.

[0041] Continue to refer to Figure 1 In step 120, the intermediate billet width and intermediate billet thickness are obtained, wherein the intermediate billet is obtained by rough rolling of the continuous casting billet.

[0042] In this application, the continuously cast billet can be rough rolled by a roughing mill, and the resulting slab is used as an intermediate billet.

[0043] In this application, the intermediate billet width and intermediate billet thickness can be obtained through a secondary control system in the strip steel production line.

[0044] Continue to refer to Figure 1 In step 130, the initial coil length of the intermediate billet is determined based on the width of the continuous casting billet and the width of the intermediate billet. The intermediate billet coil is obtained by rolling the intermediate billet through a plate coil box.

[0045] In this application, the plate coil box is located after the roughing mill. The plate coil box is used to roll the intermediate billet obtained from the roughing mill into a steel coil to reduce the temperature drop of the intermediate billet, uniformize the temperature difference between the head and tail of the intermediate billet, and reduce the surface heat dissipation of the intermediate billet.

[0046] In this application, during the winding process of the intermediate billet, the intermediate billet gradually forms a steel coil, and a circular eye is formed at the center of the steel coil.

[0047] Continue to refer to Figure 1 In step 140, the initial diameter of the intermediate billet coil is determined based on the initial coil length.

[0048] In this application, the coil diameter is the diameter of the intermediate billet steel coil, the initial coil diameter is the diameter of the intermediate billet steel coil after winding, and the coil diameter of the intermediate billet steel coil gradually decreases during the uncoiling process.

[0049] Continue to refer to Figure 1 In step 150, the intermediate billet steel coil is uncoiled through the plate and coil box, and the uncoiling diameter of the intermediate billet steel coil is obtained. The uncoiling diameter is the remaining diameter of the intermediate billet steel coil.

[0050] In this application, the intermediate billet steel coil is uncoiled through the plate and coil box to feed the intermediate billet into the finishing mill at a low speed and improve the descaling effect.

[0051] In this application, during the uncoiling process of the intermediate billet steel coil, the diameter of the intermediate billet steel coil gradually decreases, and the diameter of the intermediate billet steel coil that is not fully uncoiled is taken as the remaining diameter of the intermediate billet steel coil.

[0052] In this application, during the uncoiling process of the intermediate billet steel coil, the uncoiling diameter of the intermediate billet steel coil is determined based on the uncoiling length of the intermediate billet steel coil.

[0053] Continue to refer to Figure 1 In step 160, based on the thickness of the intermediate billet and the uncoiling diameter, the unwinding pin of the plate coil box is controlled to be inserted into the eye of the intermediate billet steel coil.

[0054] In this application, when the uncoiling diameter is reduced to a set diameter, the uncoiling side guide plate of the plate coil box moves to the uncoiling pin insertion position, and the uncoiling pin begins to be inserted. The uncoiling pin can make the steel coil pass straight through the clamping straightening roller after uncoiling, preventing the steel coil from forming a double tail.

[0055] In this application, the timing of inserting the unwinding pin into the eye of the intermediate billet steel coil is determined based on the intermediate billet thickness and the uncoiling diameter, and the insertion of the unwinding pin of the plate coil box into the eye of the intermediate billet steel coil is controlled. If the unwinding pin is inserted too early, the intermediate billet steel coil has not yet reached the insertion area of ​​the unwinding pin, which will cause the unwinding pin to be inserted outside the eye, resulting in a double-tail problem. If the unwinding pin is inserted too late, the intermediate billet steel coil will be uncoiled but the unwinding pin will not be inserted, which will also result in a double-tail problem.

[0056] In one embodiment of this application, the method further includes: determining the diameter of the coil eye of the intermediate billet steel coil based on the hardness of the steel grade of the continuously cast billet.

[0057] In this application, the steel grades of the continuously cast billets have different hardness, and the diameter of the coil eye of the intermediate billet steel coil obtained by rough rolling and coiling the continuously cast billets will also be different.

[0058] In this application, if the eye diameter of the intermediate billet steel coil is set to a constant value, the actual eye diameter of the intermediate billet steel coil with different steel grades and hardness may differ too much from the set eye diameter during the uncoiling process. This results in a large error between the calculated initial coil diameter and the actual initial coil diameter, which in turn leads to inaccurate insertion timing of the subsequent uncoiling pin and causes a double-tail failure during uncoiling.

[0059] In one embodiment of this application, determining the eye diameter of the intermediate billet steel coil based on the hardness of the steel grade of the continuously cast billet includes: if the continuously cast billet is hard steel, the eye diameter of the intermediate billet steel coil ranges from 615 to 625 mm; if the continuously cast billet is ordinary steel, the eye diameter of the intermediate billet steel coil ranges from 595 to 605 mm; if the continuously cast billet is mild steel, the eye diameter of the intermediate billet steel coil ranges from 575 to 585 mm.

[0060] In this application, if the continuously cast billet is hard steel, the eye diameter of the intermediate billet steel coil is preferably set to 620 mm; if the continuously cast billet is ordinary steel, the eye diameter of the intermediate billet steel coil is preferably set to 600 mm; and if the continuously cast billet is mild steel, the eye diameter of the intermediate billet steel coil is preferably set to 580 mm.

[0061] In one embodiment of this application, determining the initial coil diameter of the intermediate billet steel coil based on the initial coil length includes: obtaining the interlayer coefficient of the intermediate billet steel coil, the interlayer coefficient being used to characterize the compactness of the intermediate billet steel coil; and determining the initial coil diameter of the intermediate billet steel coil based on the interlayer coefficient, the intermediate billet thickness, the initial coil length, and the eye diameter.

[0062] In this application, the interlayer coefficient of the intermediate billet steel coil is obtained. The interlayer coefficient is not affected by the thickness of the intermediate billet steel coil or the hardness of the steel grade. The interlayer coefficient can be determined according to the actual situation, and the interlayer coefficient can be 3%.

[0063] In this application, the roll width of the intermediate billet steel coil can be determined based on the interlayer coefficient, the intermediate billet thickness, and the initial coil length, and the initial roll diameter of the intermediate billet steel coil can be determined based on the roll width of the intermediate billet steel coil and the roll eye diameter.

[0064] In one embodiment of this application, the initial coil diameter of the intermediate billet steel coil is determined by the following formula:

[0065]

[0066] Wherein, D is the initial coil diameter of the intermediate billet, λ is the interlayer coefficient, H is the thickness of the intermediate billet, L is the initial coil length, and r is the eye diameter.

[0067] In one embodiment of this application, determining the initial coil length of the intermediate billet steel coil based on the width of the continuously cast billet and the width of the intermediate billet includes: obtaining a first product of the length of the continuously cast billet, the width of the continuously cast billet, and the thickness of the continuously cast billet; obtaining a second product of the width of the intermediate billet and the thickness of the intermediate billet; calculating the ratio of the first product and the second product, and using the ratio as the initial coil length of the intermediate billet steel coil.

[0068] In this application, the volume of the continuously cast billet remains unchanged after rough rolling. Therefore, the volumes of the continuously cast billet and the intermediate billet are the same. That is, the product of the length, width, and thickness of the continuously cast billet is equal to the product of the length, width, and thickness of the intermediate billet. Then, the first product of the length, width, and thickness of the continuously cast billet and the second product of the width and thickness of the intermediate billet are calculated. The first product is greater than the second product. The ratio of the first product to the second product is calculated, and the ratio can be determined as the length of the intermediate billet.

[0069] In this application, the intermediate billet and the intermediate billet coil have the same length, so the intermediate billet length of the intermediate billet is the initial coil length of the intermediate billet coil.

[0070] In one embodiment of this application, obtaining the uncoiling diameter of the intermediate billet steel coil includes: obtaining the uncoiling length of the intermediate billet steel coil, wherein the uncoiling length is the remaining length of the intermediate billet steel coil; determining the remaining diameter of the intermediate billet steel coil based on the uncoiling length, the intermediate billet thickness, the interlayer coefficient, and the eye diameter, and using the remaining diameter as the uncoiling diameter of the intermediate billet steel coil.

[0071] In this application, the actual speed of the intermediate billet in the uncoiling state during the uncoiling process of the intermediate billet steel coil can be obtained through the secondary control system in the strip steel production line, and the uncoiling length of the intermediate billet steel coil can be calculated based on the integral of the actual speed.

[0072] In this application, the remaining length of the intermediate billet steel coil is determined based on the uncoiled length and the initial coil length. This remaining length is the uncoiled length of the intermediate billet steel coil. Based on the remaining length of the intermediate billet steel coil, the intermediate billet thickness, the interlayer coefficient, and the eyelet diameter, the remaining coil diameter of the intermediate billet steel coil is calculated and used as the uncoiled coil diameter. The remaining coil diameter of the intermediate billet steel coil can be determined using the following formula:

[0073]

[0074] Wherein, D1 is the remaining diameter of the intermediate billet coil, λ is the interlayer coefficient, H is the thickness of the intermediate billet, L1 is the remaining length of the intermediate billet coil, and r is the diameter of the eyelet.

[0075] In one embodiment of this application, controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil based on the intermediate billet thickness and the uncoiling diameter includes: if the intermediate billet thickness is greater than or equal to a set thickness threshold and the uncoiling diameter is less than a first uncoiling diameter threshold, then controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil; if the intermediate billet thickness is less than the set thickness threshold and the uncoiling diameter is less than a second uncoiling diameter threshold, then controlling the insertion of the opening pin of the plate coil box into the eye of the intermediate billet steel coil.

[0076] In this application, the set thickness threshold can be 32 mm.

[0077] In this application, the first unwinding diameter threshold can be 920 mm, the second unwinding diameter threshold can be 870 mm, and the first unwinding diameter threshold, the second unwinding diameter threshold, and the set thickness threshold can be set according to actual needs.

[0078] In this application, the thicker the intermediate billet, the earlier the steel coil moves to the end pin during uncoiling; conversely, the thinner the intermediate billet, the later the steel coil moves to the end pin during uncoiling. Therefore, the insertion time of the end pin needs to be set differently depending on the thickness of the intermediate billet.

[0079] In this application, if the thickness of the intermediate billet is greater than or equal to 32 mm and the uncoiling diameter is less than 920 mm, the uncoiling pin of the plate coil box is controlled to be inserted into the eye of the intermediate billet steel coil to flatten the tail of the intermediate billet steel coil during the uncoiling process and prevent the tail of the intermediate billet steel coil from stacking and forming a double tail. If the thickness of the intermediate billet is less than 32 mm and the uncoiling diameter is less than 870 mm, the uncoiling pin of the plate coil box is controlled to be inserted into the eye of the intermediate billet steel coil.

[0080] To enable those skilled in the art to more easily understand this application, the following will be combined with Figure 2 This application will be illustrated with specific embodiments.

[0081] Figure 2 The diagram illustrates the relationship between the intermediate billet length and the initial roll diameter during the intermediate billet winding process in a specific embodiment of this application.

[0082] Example 1

[0083] Step 1: Obtain the length, width, and thickness of the continuously cast billet, which are 9200mm, 1100mm, and 230mm respectively; and obtain the width and thickness of the intermediate billet, which are 1031.442mm and 34.529mm respectively.

[0084] Step 2: Obtain the winding speed of the intermediate billet during winding;

[0085] Step 3: Perform integral calculation based on the winding speed during winding to determine the intermediate billet length. The intermediate billet length is equal to the initial coil length of the intermediate billet steel coil. Figure 2 As shown, the length of the intermediate billet is 69753.4 mm;

[0086] Step 4: Based on the initial coil length, determine the initial coil diameter of the intermediate billet coil, such as... Figure 2 As shown, the initial roll diameter is 1917.92 mm.

[0087] Step 5: Uncoil the intermediate billet steel coil through the plate and coil box. Calculate the length that has been uncoiled according to the uncoiling speed. Subtract the length that has been uncoiled from the initial steel coil length to get the remaining intermediate billet length in the uncoiling area. Calculate the remaining coil diameter in the uncoiling area and use the remaining coil diameter as the uncoiling coil diameter.

[0088] Step 6: Based on the thickness of the intermediate billet and the uncoiling diameter, control the insertion of the unwinding pin of the plate coil box into the eye of the intermediate billet steel coil.

[0089] Example 2

[0090] Step 1: Obtain the length, width, and thickness of the continuously cast billet, which are 9200mm, 1100mm, and 230mm, respectively;

[0091] Step 2: Obtain the width and thickness of the intermediate billet, which are 1031.442 mm and 34.529 mm, respectively;

[0092] Step 3: Based on the length, width, and thickness of the continuously cast billet, and the width and thickness of the intermediate billet, determine the length of the intermediate billet, which is equal to the initial coil length of the intermediate billet coil. Figure 2 As shown, the length of the intermediate billet is 65355.1 mm;

[0093] Step 4: Based on the initial coil length, determine the initial coil diameter of the intermediate billet coil, such as... Figure 2 As shown, the initial roll diameter is 1862.17 mm;

[0094] Step 5: Uncoil the intermediate billet steel coil using a plate and coil box to obtain the uncoiling diameter of the intermediate billet steel coil;

[0095] Step 6: Based on the thickness of the intermediate billet and the uncoiling diameter, control the insertion of the unwinding pin of the plate coil box into the eye of the intermediate billet steel coil.

[0096] As mentioned above, due to frequent slippage during the coiling process, calculating the intermediate billet length based on the coiling speed by integration results in a calculated intermediate billet length and an initial coil diameter that are both larger than the actual intermediate billet length and initial coil diameter. This leads to inaccurate timing of the subsequent insertion of the tail pin into the coil eye, resulting in a double-tail failure. The technical solution proposed in this application corrects the intermediate billet length calculated based on the slab dimensions, eliminating the problem of an oversized intermediate billet length and initial coil diameter caused by slippage during the coiling process.

[0097] The following describes an embodiment of the apparatus of this application, which can be used to execute the control method for reducing double-tail faults in the plate roll box according to the first aspect of the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the control method for reducing double-tail faults in the plate roll box according to the first aspect of this application.

[0098] Figure 3 A block diagram of a control device for reducing double-tail failures in a roll box according to an embodiment of this application is shown.

[0099] like Figure 3 As shown in the embodiment of this application, the control device 300 for reducing double-tail faults in the plate roll box includes: a first acquisition unit 301, a second acquisition unit 302, a first determination unit 303, a second determination unit 304, a third acquisition unit 305, and a control unit 306.

[0100] The system comprises the following components: a first acquisition unit 301, used to acquire the steel grade hardness, length, width, and thickness of the continuously cast billet; a second acquisition unit 302, used to acquire the width and thickness of the intermediate billet, which is obtained by rough rolling the continuously cast billet; a first determination unit 303, used to determine the initial coil length of the intermediate billet steel coil based on the width of the continuously cast billet and the width of the intermediate billet, which is obtained by coiling the intermediate billet through a plate and coil box; a second determination unit 304, used to determine the initial coil diameter of the intermediate billet steel coil based on the initial coil length; a third acquisition unit 305, used to uncoil the intermediate billet steel coil through the plate and coil box and acquire the uncoiled coil diameter, which is the remaining coil diameter of the intermediate billet steel coil; and a control unit 306, used to control the insertion of the uncoiling pin of the plate and coil box into the coil eye of the intermediate billet steel coil based on the thickness of the intermediate billet and the uncoiled coil diameter.

[0101] In some embodiments of this application, based on the foregoing scheme, the device further includes a third determining unit, which is used to determine the diameter of the coil eye of the intermediate billet steel coil based on the hardness of the steel grade of the continuously cast billet.

[0102] In some embodiments of this application, based on the foregoing scheme, the third determining unit is configured as follows: if the continuously cast billet is hard steel, the diameter of the eye of the intermediate billet coil ranges from 615 to 625 mm; if the continuously cast billet is ordinary steel, the diameter of the eye of the intermediate billet coil ranges from 595 to 605 mm; if the continuously cast billet is mild steel, the diameter of the eye of the intermediate billet coil ranges from 575 to 585 mm.

[0103] In some embodiments of this application, based on the foregoing scheme, the second determining unit 304 is configured to: obtain the interlayer coefficient of the intermediate billet steel coil, the interlayer coefficient being used to characterize the tightness of the intermediate billet steel coil; and determine the initial coil diameter of the intermediate billet steel coil based on the interlayer coefficient, the intermediate billet thickness, the initial steel coil length, and the coil eye diameter.

[0104] In some embodiments of this application, based on the foregoing scheme, the second determining unit 304 is further configured as follows:

[0105]

[0106] Wherein, D is the initial coil diameter of the intermediate billet, λ is the interlayer coefficient, H is the thickness of the intermediate billet, L is the initial coil length, and r is the eye diameter.

[0107] In some embodiments of this application, based on the foregoing scheme, the first determining unit 303 is configured to: obtain a first product of the continuous casting billet length, the continuous casting billet width, and the continuous casting billet thickness; obtain a second product of the intermediate billet width and the intermediate billet thickness; calculate the ratio of the first product and the second product, and use the ratio as the initial coil length of the intermediate billet.

[0108] In some embodiments of this application, based on the foregoing scheme, the third acquisition unit 305 is configured to: acquire the uncoiling length of the intermediate billet steel coil, wherein the uncoiling length is the remaining length of the intermediate billet steel coil; determine the remaining coil diameter of the intermediate billet steel coil based on the uncoiling length, the intermediate billet thickness, the interlayer coefficient, and the eye diameter, and use the remaining coil diameter as the uncoiling diameter of the intermediate billet steel coil.

[0109] In some embodiments of this application, based on the foregoing scheme, the control unit 306 is configured to: if the thickness of the intermediate billet is greater than or equal to a set thickness threshold, and the uncoiling diameter is less than a first uncoiling diameter threshold, then control the unwinding pin of the plate coil box to insert into the eye of the intermediate billet steel coil; if the thickness of the intermediate billet is less than the set thickness threshold, and the uncoiling diameter is less than a second uncoiling diameter threshold, then control the unwinding pin of the plate coil box to insert into the eye of the intermediate billet steel coil.

[0110] This application also provides a computer program product comprising computer instructions stored in a computer-readable storage medium and adapted to be read and executed by a processor to cause a computer device having the processor to perform the control method for reducing double-tail faults in roll box as described in any of the above embodiments.

[0111] This application also provides a computer-readable medium, which may be included in an electronic device or exist independently without being assembled into an electronic device. The computer-readable storage medium stores at least one line of program code, which is loaded and executed by a processor to implement the control method for reducing double-tail faults in the roll box as described in any of the above embodiments.

[0112] This application also provides an electronic device, which includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to implement the control method for reducing double-tail faults in the roll box as described in any of the above embodiments.

[0113] Figure 4 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown.

[0114] It should be noted that, Figure 4 The computer system 400 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0115] like Figure 4 As shown, the computer system 400 includes a Central Processing Unit (CPU) 401, which can perform various appropriate actions and processes based on programs stored in Read-Only Memory (ROM) 402 or programs loaded from storage portion 408 into Random Access Memory (RAM) 403, such as performing the methods described in the above embodiments. The RAM 403 also stores various programs and data required for system operation. The CPU 401, ROM 402, and RAM 403 are interconnected via a bus 404. An Input / Output (I / O) interface 405 is also connected to the bus 404.

[0116] The following components are connected to I / O interface 405: an input section 406 including a keyboard, mouse, etc.; an output section 407 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to I / O interface 405 as needed. A removable medium 411, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., is installed on drive 410 as needed so that computer programs read from it can be installed into storage section 408 as needed.

[0117] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 409, and / or installed from removable medium 411. When the computer program is executed by central processing unit (CPU) 401, it performs various functions defined in the system of this application.

[0118] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0119] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0120] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0121] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0122] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the method according to the embodiments of this application.

[0123] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0124] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this application, and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0125] It should be understood that this application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A control method of reducing a double tail failure of a coil box, characterized by, The method comprises: obtaining the steel grade hardness of the continuous casting billet, the continuous casting billet length, the continuous casting billet width and the continuous casting billet thickness; obtaining the intermediate billet width and the intermediate billet thickness, the intermediate billet being obtained by rough rolling of the continuous casting billet; based on the continuous casting billet width and the intermediate billet width, determining the initial coil length of the intermediate billet coil, comprising: obtaining the first product of the continuous casting billet length and the continuous casting billet width and the continuous casting billet thickness; obtaining the second product of the intermediate billet width and the intermediate billet thickness; calculating the ratio of the first product and the second product, and taking the ratio as the initial coil length of the intermediate billet coil, the intermediate billet coil being obtained by coiling of the intermediate billet through a coil box; based on the steel grade hardness of the continuous casting billet, determining the eye diameter of the intermediate billet coil; based on the initial coil length, determining the initial coil diameter of the intermediate billet coil, comprising: obtaining the interlayer coefficient of the intermediate billet coil, the interlayer coefficient being used to represent the tightness of the intermediate billet coil; based on the interlayer coefficient, the intermediate billet thickness, the initial coil length and the eye diameter, determining the initial coil diameter of the intermediate billet coil; The initial coil diameter of the intermediate billet coil is determined by the following formula: wherein D is the initial coil diameter of the intermediate billet coil, λ is the interlayer coefficient, H is the intermediate billet thickness, L is the initial coil length, and r is the eye diameter; by the coil box, the intermediate billet coil is uncoiled, and the uncoiling coil diameter of the intermediate billet coil is obtained, comprising: obtaining the uncoiling length of the intermediate billet coil, the uncoiling length being the remaining length of the intermediate billet coil; based on the uncoiling length, the intermediate billet thickness, the interlayer coefficient and the eye diameter, determining the remaining coil diameter of the intermediate billet coil; based on the initial coil diameter and the remaining coil diameter, determining the uncoiling coil diameter of the intermediate billet coil, the uncoiling coil diameter being the remaining coil diameter of the intermediate billet coil; based on the intermediate billet thickness and the uncoiling coil diameter, controlling the insertion of the open end pin of the coil box into the eye of the intermediate billet coil, comprising: if the intermediate billet thickness is greater than or equal to a set thickness threshold, and the uncoiling coil diameter is less than a first uncoiling coil diameter threshold, then controlling the insertion of the open end pin of the coil box into the eye of the intermediate billet coil; if the intermediate billet thickness is less than the set thickness threshold, and the uncoiling coil diameter is less than a second uncoiling coil diameter threshold, then controlling the insertion of the open end pin of the coil box into the eye of the intermediate billet coil.

2. The method of claim 1, wherein, The determination of the eye diameter of the intermediate billet coil based on the steel grade hardness of the continuous casting billet comprises: if the continuous casting billet is hard steel, then the eye diameter of the intermediate billet coil ranges from 615 to 625 mm; if the continuous casting billet is ordinary steel, then the eye diameter of the intermediate billet coil ranges from 595 to 605 mm; if the continuous casting billet is soft steel, then the eye diameter of the intermediate billet coil ranges from 575 to 585 mm.

3. A control device for reducing a coil box double tail fault, for implementing the method of any one of claims 1 to 2, characterized in that, The device comprises: a first obtaining unit configured to obtain the steel grade hardness of the continuous casting billet, the continuous casting billet length, the continuous casting billet width and the continuous casting billet thickness; A second acquisition unit is configured to acquire an intermediate blank width and an intermediate blank thickness of an intermediate blank, the intermediate blank being obtained by rough rolling of the continuous casting blank; A first determination unit is configured to determine an initial coil length of an intermediate blank coil based on the continuous casting blank width and the intermediate blank width, the intermediate blank coil being obtained by coiling of the intermediate blank by a coil box; A second determination unit is configured to determine an initial coil diameter of the intermediate blank coil based on the initial coil length; A third acquisition unit is configured to perform uncoiling processing on the intermediate blank coil by the coil box, and acquire an uncoiled coil diameter of the intermediate blank coil, the uncoiled coil diameter being a remaining coil diameter of the intermediate blank coil; A control unit is configured to control insertion of an open-end pin of the coil box into a coil eye of the intermediate blank coil based on the intermediate blank thickness and the uncoiled coil diameter.

4. An electronic device, comprising: The electronic device comprises one or more processors and one or more memories, and at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the control method for reducing double-end failure of a coil box according to any one of claims 1 to 2.

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