Strip steel coiling method and system and strip steel rolling system

Abstract

The invention discloses a strip steel coiling method and system and a strip steel rolling system.The method comprises the steps that a first starting signal is sent to a first coiling machine, and the first coiling machine is controlled to coil a first strip steel section output by a finishing mill; in response to the received first steel throwing signal, a second starting signal is sent to a second coiling machine, and the second starting signal is used for indicating a coiling block and a wrapper roller of the second coiling machine to speed up and indicating a pinch roller of the second coiling machine to descend so as to coil a second strip steel section output by the finishing mill. The first steel throwing signal is used for transmitting information that the strip tail of the first strip steel section leaves the finishing mill. And when a first steel throwing signal generated when the strip tail of the first strip steel section leaves the finishing mill is received, a winding drum and a wrapper roll of the second coiling machine are controlled to speed up, a pinch roll of the second coiling machine is controlled to descend, the second coiling machine is made to have the coiling condition before the second strip steel section reaches the second coiling machine, and waste steel is avoided.

Description

Technical Field

[0001] The present invention relates to Coiling of the hot rolling production line the technical field, and in particular to a strip coiling method, a system, and a strip rolling system. Background Art

[0002] In the hot-rolling double-steel mode, two steel strips are simultaneously rolled in the finishing mill. Therefore, at least two coiling machines are required to wind the strips in sequence. It usually takes 7 s for a coiling machine to be ready to wind the strip until it meets the coiling condition. In the prior art, after the first coiling machine finishes winding, the second coiling machine is started to wind the next strip. However, the double-steel mode has a fast rhythm. When the strip reaches the second coiling machine, scrap steel often occurs because the second coiling machine does not meet the coiling condition, which affects the production time. Summary of the Invention

[0003] The present application provides a strip coiling method, a system, and a strip rolling system to solve the technical problem of scrap steel caused by the coiling machine not meeting the coiling condition in the existing hot-rolling double-steel mode.

[0004] In view of the above problems, the present application is proposed to provide a strip coiling method, a system, and a strip rolling system that overcome the above problems or at least partially solve the above problems.

[0005] In a first aspect, the present application provides a strip coiling method, including:

[0006] Sending a first start signal to a first coiling machine to control the first coiling machine to wind a first strip section output by a finishing mill;

[0007] In response to receiving a first casting-off signal, sending a second start signal to a second coiling machine, where the second start signal is used to instruct the mandrel and the coiler pinch roll of the second coiling machine to speed up, and the pinch roll of the second coiling machine to lower, so as to wind a second strip section output by the finishing mill, and the first casting-off signal is used to transmit the information that the tail of the first strip section leaves the finishing mill.

[0008] Optionally, after sending the second start signal to the second coiling machine, the method further includes:

[0009] In response to receiving a second casting-off signal, sending a third start signal to a third coiling machine, where the third start signal is used to instruct the mandrel and the coiler pinch roll of the third coiling machine to speed up, and the pinch roll of the third coiling machine to lower, so as to wind a third strip section output by the finishing mill, and the second casting-off signal is used to transmit the information that the tail of the second strip section leaves the finishing mill.

[0010] Optionally, after sending the third start signal to the third coiling machine, the method further includes:

[0011] In response to the received third steel throwing signal, send a fourth start signal to the first coiler, where the fourth start signal is used to instruct the mandrel and coiling rolls of the first coiler to increase speed, and the pinch rolls of the first coiler to lower, so as to wind the fourth strip steel section output by the finishing mill. The third steel throwing signal is used to transmit the information that the tail of the third strip steel section leaves the finishing mill.

[0012] Optionally, sending a first start signal to the first coiler to control the first coiler to wind the first strip steel section output by the finishing mill includes:

[0013] Select a target coiling mode from multiple candidate coiling modes, and in response to a trigger instruction for the target coiling mode, send a first start signal to the first coiler to instruct the mandrel and coiling rolls of the first coiler to increase speed, and the pinch rolls of the first coiler to lower, so as to wind the first strip steel section output by the finishing mill.

[0014] In a second aspect, the present application provides a strip steel coiling system, including a first coiler, a second coiler, and a control mechanism. The first coiler and the second coiler are sequentially arranged on the output roller table of the finishing mill; the control mechanism is electrically connected to the first coiler and the second coiler, and is used to send a first start signal to the first coiler to control the first coiler to wind the first strip steel section output by the finishing mill; and in response to the received first steel throwing signal, send a second start signal to the second coiler, where the second start signal is used to instruct the mandrel and coiling rolls of the second coiler to increase speed, and the pinch rolls of the second coiler to lower, so as to wind the second strip steel section output by the finishing mill. The first steel throwing signal is used to transmit the information that the tail of the first strip steel section leaves the finishing mill.

[0015] Optionally, the strip steel coiling system further includes a third coiler. The control mechanism is electrically connected to the third coiler and is used to, in response to the received second steel throwing signal, send a third start signal to the third coiler, where the third start signal is used to instruct the mandrel and coiling rolls of the third coiler to increase speed, and the pinch rolls of the third coiler to lower, so as to wind the second strip steel section output by the finishing mill. The second steel throwing signal is used to transmit the information that the tail of the second strip steel section leaves the finishing mill.

[0016] Optionally, the strip steel coiling system further includes a human-machine interaction device. The human-machine interaction device includes a human-machine interaction page, and the human-machine interaction page is provided with buttons for multiple candidate strip steel coiling modes. The control mechanism is connected to the human-machine interaction device and is used to, in response to the trigger of a button for a target strip steel coiling mode selected from multiple candidate strip steel coiling modes, send a first start signal to the first coiler.

[0017] In a third aspect, the present application provides a strip steel rolling system, including a finishing mill and the strip steel coiling system of the second aspect.

[0018] Fourthly, the present application further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the electronic device is caused to execute the method provided in the first aspect.

[0019] Fifthly, the present application further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the computer is caused to execute the method provided in the first aspect.

[0020] Sixthly, the present application further provides a computer program product including a computer program. When the computer program is run on a computer, the computer is caused to execute the method provided in the first aspect.

[0021] The technical solution provided by the present application has at least the following technical effects or advantages:

[0022] For the strip coiling method, system, and strip rolling system provided by the present application, when the first coiler winds up the first strip section, upon receiving a first throwing steel signal generated when the tail end of the first strip section leaves the finishing mill, the second strip section is behind the first strip section and is being conveyed to the second coiler. At this time, the mandrel and the coiling assist rolls of the second coiler are controlled to speed up, and the pinch rolls of the second coiler are lowered, so that the second coiler has the coiling condition before the second strip section reaches the second coiler, thus avoiding scrap steel.

[0023] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented in accordance with the content of the specification. And in order to make the above and other objects, features, and advantages of the present application more obvious and understandable, the following specifically illustrates the specific embodiments of the present application. Description of the Drawings

[0024] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. And throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0025] Figure 1 It is a flowchart of a strip coiling method provided by an embodiment of the present application;

[0026] Figure 2 It is a flowchart of another strip coiling method provided by an embodiment of the present application;

[0027] Figure 3 It is a flowchart of another strip coiling method provided by an embodiment of the present application;

[0028] Figure 4 A block diagram of a strip coiling system provided by an embodiment of the present application;

[0029] Figure 5 Another block diagram of a strip coiling system provided by an embodiment of the present application;

[0030] Figure 6 Another block diagram of a strip coiling system provided by an embodiment of the present application;

[0031] Figure 7 A block diagram of a strip rolling system provided by an embodiment of the present application;

[0032] Figure 8 A human - machine interaction page diagram of a strip rolling system provided by an embodiment of the present application;

[0033] Figure 9 A block diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0034] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings.

[0035] Various structural schematic diagrams according to embodiments of the present application are shown in the accompanying drawings. These figures are not drawn to scale. For the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0036] To better understand the above - mentioned technical solutions, the above - mentioned technical solutions will be described in detail below in combination with specific implementation manners. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application, rather than limitations on the technical solutions of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0037] The coiler is located at the end of the output roller table of the finishing mill and mainly consists of equipment such as the coiler entrance side guide plate, pinch roll, coiling roll, chute, flap, and mandrel. Its function is to coil the strip rolled by the finishing mill into a steel coil with a good coiling shape, tightly and without scratches.

[0038] Currently, when the coiler is preparing to coil the steel, the starting condition is to start after the last finishing mill is loaded. The coiling rolls and the mandrel start to accelerate, and the pinch roll starts to actuate the roll gap. It takes 7 s from the start of preparation to being ready.

[0039] Taking the double-steel mode (rolling two pieces of steel simultaneously in the finishing mill) as an example, after the hot-rolling double-steel mode is put into operation, due to the speed increase of the double-steel, there have been two cases of scrap steel during coiling. The reason is that when a piece of steel is coiled, the next coiler does not have the coiling condition. For example, when the first coiler finishes coiling, the next piece is coiled by the second coiler. From the start of preparation for coiling by the second coiler to having the coiling condition, it takes 7 seconds. However, the rhythm of the double-steel mode is fast. When the strip steel reaches the second coiler, the second coiler does not have the coiling condition, resulting in scrap steel.

[0040] The fundamental reason is that the preparation time is short, the gap of the pinch roll does not move in place, and the coiling assist roll and the mandrel do not speed up in place. After the scrap steel, not only the current strip steel becomes scrap, but also dealing with the scrap steel affects the production time for a long time.

[0041] In view of this, the embodiment of the present application provides a strip steel coiling method, as Figure 1 shown, Figure 1 is a flowchart of a strip steel coiling method provided by the embodiment of the present application. The method includes:

[0042] S101. Send a first start signal to the first coiler to control the first coiler to wind up the first strip steel section output by the finishing mill;

[0043] S102. In response to the received first throwing steel signal, send a second start signal to the second coiler. Wherein, the second start signal is used to instruct the mandrel and the coiling assist roll of the second coiler to speed up, and the pinch roll of the second coiler to descend, so as to wind up the second strip steel section output by the finishing mill. The first throwing steel signal is used to transmit the information that the tail of the first strip steel section leaves the finishing mill.

[0044] In the strip steel coiling method provided by the present application, when the first coiler winds up the first strip steel section, when receiving the first throwing steel signal generated by the tail of the first strip steel section leaving the finishing mill, the second strip steel section is behind the first strip steel section and is being conveyed to the second coiler. At this time, control the mandrel and the coiling assist roll of the second coiler to speed up, and the pinch roll of the second coiler to descend, so that the second coiler has the coiling condition before the second strip steel section reaches the second coiler, avoiding scrap steel. In this way, compared with the method in the prior art of controlling the second coiler to start after the first coiler finishes winding up the first strip steel section, the present application immediately starts the second coiler after the tail of the first strip steel section leaves the finishing mill, advancing the preparation timing.

[0045] In some optional implementation manners, as Figure 2 shown, Figure 2 is another flowchart of the strip steel coiling method provided by the embodiment of the present application. After sending the second start signal to the second coiler, the method further includes:

[0046] S201. In response to the received second steel throwing signal, send a third start signal to the third coiler, where the third start signal is used to indicate the acceleration of the reel and the coiling roll of the third coiler, and the lowering of the pinch roll of the third coiler to wind the third strip steel section output by the finishing mill. The second steel throwing signal is used to transmit the information that the tail of the second strip steel section leaves the finishing mill.

[0047] It can be understood that the first strip steel section, the second strip steel section, and the third strip steel section are output from the finishing mill in sequence. After the tail of the first strip steel section leaves the finishing mill, the second coiler is immediately started to wind the second strip steel section. After the tail of the second strip steel section leaves the finishing mill, the third coiler is immediately started to wind the third strip steel section to adapt to the fast strip steel output speed in the steel mode.

[0048] In some alternative embodiments, such as Figure 3 shown Figure 3 is another flowchart of the strip steel coiling method provided by the embodiment of the present application. After sending the third start signal to the third coiler, the method further includes:

[0049] S301. In response to the received third steel throwing signal, send a fourth start signal to the first coiler, where the fourth start signal is used to indicate the acceleration of the reel and the coiling roll of the first coiler, and the lowering of the pinch roll of the first coiler to wind the fourth strip steel section output by the finishing mill. The third steel throwing signal is used to transmit the information that the tail of the third strip steel section leaves the finishing mill.

[0050] When using the first coiler, the second coiler, and the third coiler to wind the strip steel, after the first coiler finishes winding the first strip steel section, it stops working immediately. After the third strip steel section leaves the finishing mill, the first coiler is immediately started to be ready for winding before the fourth strip steel section arrives at the first coiler.

[0051] To improve the coiling speed of the first coiler, the second coiler, and the third coiler, for any one of the first coiler, the second coiler, and the third coiler, when it starts, control the pinch roll to descend at a speed of 75 mm / s. In this way, the time from the start of preparing to coil the steel to the condition of being ready to coil the steel can be increased from 7 seconds in the prior art to 2.5 seconds, avoiding the problem of scrap steel caused by untimely coiling.

[0052] In some alternative embodiments, sending a first start signal to the first coiler and controlling the first coiler to wind the first strip steel section output by the finishing mill includes:

[0053] Select a target coiling mode from multiple candidate coiling modes, and in response to a trigger instruction for the target coiling mode, send a first start signal to the first coiler, indicating that the reel and the coiling assist roll of the first coiler are speeded up, and the pinch roll of the first coiler is lowered, so as to wind up the first strip segment output by the finishing mill.

[0054] This solution does not increase the investment and production cost, is simple, has strong applicability, and has remarkable control effect.

[0055] In a second aspect, the present application provides a strip coiling system, as Figure 4 shown, Figure 4 is a block diagram of a strip coiling system provided by an embodiment of the present application. The strip coiling system 400 includes a first coiler 401, a second coiler 402, and a control mechanism 403. The first coiler 401 and the second coiler 402 are sequentially arranged on the output roller table of the finishing mill; the control mechanism 403 is electrically connected to the first coiler 401 and the second coiler 402, and is used to execute the operations of S101 to S102 provided by the above embodiment, specifically as follows:

[0056] Send a first start signal to the first coiler 401 to control the first coiler 401 to wind up the first strip segment output by the finishing mill; and in response to the received first steel throwing signal, send a second start signal to the second coiler 402, where the second start signal is used to indicate that the reel and the coiling assist roll of the second coiler 402 are speeded up, and the pinch roll of the second coiler 402 is lowered, so as to wind up the second strip segment output by the finishing mill. The first steel throwing signal is used to transmit the information that the tail of the first strip segment leaves the finishing mill.

[0057] In some alternative embodiments, as Figure 5 shown, Figure 5 is another block diagram of a strip coiling system provided by an embodiment of the present application. The strip coiling system 400 further includes a third coiler 501. The control mechanism 403 is electrically connected to the third coiler 501, and is used to send a third start signal to the third coiler 501 in response to the received second steel throwing signal, where the third start signal is used to indicate that the reel and the coiling assist roll of the third coiler 501 are speeded up, and the pinch roll of the third coiler 501 is lowered, so as to wind up the second strip segment output by the finishing mill. The second steel throwing signal is used to transmit the information that the tail of the second strip segment leaves the finishing mill.

[0058] In some alternative embodiments, as Figure 6 shown, Figure 6Another block diagram of the strip coiling system provided by the embodiment of the present application. The strip coiling system 400 further includes a human-machine interaction device 601. The human-machine interaction device 601 includes a human-machine interaction page. The human-machine interaction page is provided with buttons for multiple candidate strip coiling modes. The control mechanism 403 is connected to the human-machine interaction device 601 and is configured to send a first start signal to the first coiler 401 in response to the triggering of a button for a target strip coiling mode selected from multiple candidate strip coiling modes.

[0059] Based on the same inventive concept, the embodiment of the present application also provides a strip rolling system, as Figure 7 shown Figure 7 A block diagram of a strip rolling system provided by the embodiment of the present application. The strip rolling system 700 includes a finishing mill 701 and the strip coiling system 400 provided in the above embodiment.

[0060] When the strip rolling system 700 is used for rolling strips, the strip coiling method provided in the above embodiment can be used to coil the strips in the multi-strip mode. When the previous strip section leaves the finishing mill and is transmitted to the corresponding coiler, when the previous strip section leaves the finishing mill, the coiler for coiling the next strip section starts to start.

[0061] The following introduces how to use the strip rolling system provided in the above embodiment to produce strips in the double-strip mode, so as to solve the problem of scrap steel caused by the coiler not having the coiling condition due to the short preparation time in the double-strip mode.

[0062] 1) Make a double-strip mode button on the HMI screen as shown in Figure 8 The normal mode and the double-strip mode can be switched at any time to reduce energy consumption. In the strip rolling HMI screen shown in Figure 8 By triggering the optional button within the line box in the lower right corner of the screen (the left side is the function input button and the right side is the function cancellation button), the on-site status can be tracked in a timely manner.

[0063] 2) Pinch roll action timing: When the previous slab is discharged from the finishing mill, the pinch roll position of the next coiler drops in advance, from 200 mm to 100 mm. When the strip tail leaves the current coiling stand, the pinch roll starts to drop to the set roll gap, and the pinch roll dropping speed increases from 50 mm / s to 75 mm / s. The time for the next coiler to have the coiling condition is increased from the previous 7 seconds to the current 2.5 seconds.

[0064] 3) Coil assist roll and mandrel speed-up timing: The mandrel and coil assist roll of the next coiler start to speed up after the previous slab is discharged from the finishing mill, advancing the preparation timing from 6 seconds in the prior art to being ready as soon as the previous slab is coiled.

[0065] In this way, by using existing equipment and technological processes and optimizing the control program, the coiler can quickly be made to meet the conditions for coiling steel, solving the problem of scrap steel caused by the short preparation time of the coiler under the double-steel mode, which makes it unable to meet the coiling conditions, and can also avoid scrap steel due to the coiler not meeting the coiling conditions under the double-steel mode, thus effectively avoiding the increase in production costs. This solution does not increase investment and production costs, is simple, has strong applicability, and has remarkable control effects.

[0066] The embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a computer, the computer is made to execute the method provided in the above embodiment.

[0067] The embodiment of the present application also provides an electronic device, as Figure 9 shown. The electronic device 900 includes a memory 901, a processor 902, and a computer program 903 stored in the memory 901 and executable on the processor 902. When the processor 902 executes the computer program 903, the electronic device 900 is made to execute the method provided in the above embodiment.

[0068] The embodiment of the present application also provides a computer program product, including a computer program. When the computer program is run, the computer is made to execute the method provided in the above embodiment.

[0069] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk, or optical disc that can store program codes.

[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0071] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

Claims

1. A strip coiling method, characterized in that, Including: Sending a first start signal to a first coiler to control the first coiler to wind up a first strip section output by a finishing mill. In response to a received first steel throwing signal, sending a second start signal to a second coiler, where the second start signal is used to instruct the mandrel and the coiling roll of the second coiler to speed up, and the pinch roll of the second coiler to descend, so as to wind up a second strip section output by the finishing mill, and the first steel throwing signal is used to transmit the information that the tail of the first strip section leaves the finishing mill.

2. The strip coiling method according to claim 1, wherein, After sending the second start signal to the second coiler, the method further includes: In response to a received second steel throwing signal, sending a third start signal to a third coiler, where the third start signal is used to instruct the mandrel and the coiling roll of the third coiler to speed up, and the pinch roll of the third coiler to descend, so as to wind up a third strip section output by the finishing mill, and the second steel throwing signal is used to transmit the information that the tail of the second strip section leaves the finishing mill.

3. The strip coiling method according to claim 2, characterized in that, After sending the third start signal to the third coiler, the method further includes: In response to a received third steel throwing signal, sending a fourth start signal to the first coiler, where the fourth start signal is used to instruct the mandrel and the coiling roll of the first coiler to speed up, and the pinch roll of the first coiler to descend, so as to wind up a fourth strip section output by the finishing mill, and the third steel throwing signal is used to transmit the information that the tail of the third strip section leaves the finishing mill.

4. The strip coiling method according to claim 1, characterized in that, The sending a first start signal to the first coiler to control the first coiler to wind up a first strip section output by the finishing mill includes: Selecting a target coiling mode from multiple candidate coiling modes, and in response to a trigger instruction for the target coiling mode, sending a first start signal to the first coiler to instruct the mandrel and the coiling roll of the first coiler to speed up, and the pinch roll of the first coiler to descend, so as to wind up the first strip section output by the finishing mill.

5. A strip coiling system, characterized in that, Including a first coiler, a second coiler and a control mechanism, the first coiler and the second coiler are sequentially arranged on the output roller table of the finishing mill; the control mechanism is electrically connected to the first coiler and the second coiler, and is used to send a first start signal to the first coiler to control the first coiler to wind up a first strip section output by the finishing mill; And in response to a received first steel throwing signal, sending a second start signal to the second coiler, where the second start signal is used to instruct the mandrel and the coiling roll of the second coiler to speed up, and the pinch roll of the second coiler to descend, so as to wind up a second strip section output by the finishing mill, and the first steel throwing signal is used to transmit the information that the tail of the first strip section leaves the finishing mill.

6. The coiling system for strip steel according to claim 5, characterized in that, It further includes a third coiler, and the control mechanism is electrically connected to the third coiler and is configured to send a third start signal to the third coiler in response to the received second steel throwing signal, wherein the third start signal is used to instruct the reel and the coiling roll of the third coiler to increase speed, and the pinch roll of the third coiler to descend, so as to wind the second strip steel section output by the finishing mill, and the second steel throwing signal is used to transmit the information that the tail of the second strip steel section leaves the finishing mill.

7. The coiling system for strip steel according to claim 5, characterized in that, It further includes a human-machine interaction device, the human-machine interaction device includes a human-machine interaction page, the human-machine interaction page is provided with buttons for a plurality of candidate strip steel coiling modes, and the control mechanism is connected to the human-machine interaction device and is configured to send the first start signal to the first coiler in response to the triggering of a button for a target strip steel coiling mode selected from the plurality of candidate strip steel coiling modes.

8. A strip rolling system, characterized in that, It includes a finishing mill and the strip steel coiling system according to any one of claims 5 to 7.

9. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, the electronic device is caused to execute the method according to any one of claims 1 to 4.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, the computer is caused to execute the method according to any one of claims 1 to 4.

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