CN110538882A - Method and device for restraining warping of strip steel and strip steel finish rolling equipment - Google Patents
Method and device for restraining warping of strip steel and strip steel finish rolling equipment Download PDFInfo
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- CN110538882A CN110538882A CN201910834703.7A CN201910834703A CN110538882A CN 110538882 A CN110538882 A CN 110538882A CN 201910834703 A CN201910834703 A CN 201910834703A CN 110538882 A CN110538882 A CN 110538882A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/72—Rear end control; Front end control
Abstract
The application discloses a method for inhibiting warping of strip steel, and relates to the technical field of metallurgical equipment control. Wherein the method comprises the following steps: before a steel biting signal of the unit is received, controlling an anti-stripping water feeding device below an inlet of the unit to be independently started; and after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously. By the method, temperature difference can be formed on the upper surface and the lower surface of the head of the strip steel in the threading process, so that downward bending tension with a certain size is generated, and the head of the strip steel is prevented from warping. Meanwhile, the method can control the anti-stripping water feeding devices arranged above and below the corresponding unit inlet to be started simultaneously by immediately controlling the anti-stripping water feeding devices after receiving the steel biting signal of the unit, and can also control the working temperature of the roller on the premise of ensuring no warping, thereby improving the processing quality of the strip steel.
Description
Technical Field
the application relates to the technical field of metallurgical equipment control, in particular to a method and a device for inhibiting the warping of strip steel and strip steel finish rolling equipment.
Background
In the metallurgical industry, the hot rolling process of sheet generally comprises heating, rough rolling, flying shears, finish rolling, coiling and the like, wherein the finish rolling stage is the most critical and directly influences various control indexes of finished products.
In the prior art, the head of the strip steel is easy to warp upwards under the action of internal stress in the strip threading process of each unit in the finish rolling equipment to form a warping head, so that the strip steel is clamped or the head of the strip steel is folded to form a defect coil, the smooth production is seriously influenced, the head cutting amount of the strip steel is increased, and the yield of the strip steel is reduced.
disclosure of Invention
The embodiment of the application provides a method and a device for inhibiting the warping of strip steel and strip steel finish rolling equipment, and solves the problem that the warping is generated in the process that the strip steel passes through a finish rolling unit in the prior art.
In order to achieve the above purpose, the preferred embodiment of the present application adopts the following technical solutions:
In a first aspect, an embodiment of the present application provides a strip steel warping inhibition method, which is applied to a strip steel finishing rolling device, where the strip steel finishing rolling device includes a plurality of units arranged in sequence, and an anti-peeling water feeding device is disposed above and below an inlet of each unit, and the method includes:
before a steel biting signal of the unit is received, controlling an anti-stripping water feeding device below an inlet of the unit to be independently started;
And after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
Optionally, in an embodiment of the present application, before the step of controlling the anti-spalling water dropping device below the inlet of the unit to be separately activated before the step of receiving the steel biting signal of the unit, the method further includes:
judging whether the currently rolled strip steel is of a preset type or not;
if the type is a preset type, controlling the anti-stripping water feeding devices below the inlet of the unit to be independently started before a steel biting signal of the unit is received, and controlling the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after the steel biting signal of the unit is received;
and if the type is not the preset type, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
Optionally, in another embodiment of the present application, before the step of controlling the anti-spalling water dropping device below the inlet of the unit to be separately activated before the step of receiving the steel biting signal of the unit, the method further comprises:
judging whether the rolling temperature of the strip steel is less than a preset threshold value or not;
If the rolling temperature is lower than a preset threshold value, controlling an anti-stripping water feeding device below the inlet of the unit to be independently started before a steel biting signal of the unit is received, and controlling anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after the steel biting signal of the unit is received;
And if the rolling temperature is greater than or equal to a preset threshold value, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
Specifically, in this embodiment of the present application, the strip rolling mill includes a first unit and a second unit arranged in a strip rolling direction, and the step of controlling the anti-peeling water feeding devices below the unit inlet to be individually activated before receiving a steel biting signal from the units, and controlling the anti-peeling water feeding devices provided above and below the unit inlet corresponding to the steel biting signal to be simultaneously activated after receiving the steel biting signal from the units includes:
When the head of the strip steel reaches the first unit and does not receive a steel biting signal of the first unit, controlling the anti-stripping water feeding device below the inlet of the first unit to be independently started;
After a steel biting signal of the first unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the first unit to be started simultaneously;
when the head of the strip steel reaches the second unit and does not receive a steel biting signal of the second unit, controlling the anti-stripping water feeding device below the inlet of the second unit to be independently started, and keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time;
and after a steel biting signal of the second unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the second unit to be started at the same time, and continuously keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time.
In a second aspect, the embodiment of the application provides a belted steel warp suppression device, is applied to belted steel finish rolling equipment, belted steel finish rolling equipment is including a plurality of units that arrange in proper order, and all is provided with the anti-stripping water above and below the entry of every unit and puts in the device, the device includes:
the signal receiving unit is used for receiving a steel biting signal of the unit;
the control unit is used for controlling the anti-stripping water feeding device below the inlet of the unit to be independently started before a steel biting signal of the unit is received; and
And after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
optionally, in an embodiment of the present application, the apparatus further includes a first determining unit, where the first determining unit is configured to:
Judging whether the currently rolled strip steel is of a preset type or not;
if the type is a preset type, the control unit controls the anti-stripping water feeding devices below the inlet of the unit to be started independently before receiving a steel biting signal of the unit, and controls the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be started simultaneously after receiving the steel biting signal of the unit;
If the type is not the preset type, the control unit controls the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
Optionally, in an embodiment of the present application, the apparatus further includes a second determining unit, where the second determining unit is configured to:
Judging whether the rolling temperature of the strip steel is less than a preset threshold value or not;
If the rolling temperature is lower than a preset threshold value, the control unit controls the anti-stripping water feeding devices below the inlet of the unit to be independently started before receiving a steel biting signal of the unit, and controls the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after receiving the steel biting signal of the unit;
And if the rolling temperature is greater than or equal to a preset threshold value, the control unit controls the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
specifically, in an embodiment of the present application, the strip finishing equipment includes a first unit and a second unit arranged along a strip rolling direction, and the control unit is specifically configured to:
When the head of the strip steel reaches the first unit and does not receive a steel biting signal of the first unit, controlling the anti-stripping water feeding device below the inlet of the first unit to be independently started;
after a steel biting signal of the first unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the first unit to be started simultaneously;
when the head of the strip steel reaches the second unit and does not receive a steel biting signal of the second unit, controlling the anti-stripping water feeding device below the inlet of the second unit to be independently started, and keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time;
and after a steel biting signal of the second unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the second unit to be started at the same time, and continuously keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time.
In a third aspect, an embodiment of the present application further provides a strip steel finishing rolling apparatus, where the strip steel finishing rolling apparatus includes a plurality of units arranged in sequence, and an anti-peeling water feeding device is disposed above and below an inlet of each unit;
the strip steel finish rolling equipment further comprises the strip steel warping inhibiting device, so that warping of the strip steel in the finish rolling process is inhibited through the device.
Compared with the prior art, the method for inhibiting the warping of the strip steel provided by the embodiment of the application has at least the following technical effects or advantages:
According to the method for inhibiting the warping of the strip steel, before the steel biting signal of the unit is received, the anti-stripping water feeding device below the inlet of the unit is controlled to be independently started, so that the temperature difference is formed between the upper surface and the lower surface of the strip steel in the strip steel threading process, downward bending tension with a certain size is generated, and the warping of the head of the strip steel is inhibited. Furthermore, the method controls the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be started simultaneously after the steel biting signal of the unit is received, and can also control the working temperature of the roller on the premise of ensuring no head warping, thereby improving the processing quality of the strip steel.
Drawings
in order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
fig. 1 is a schematic structural diagram of a strip steel warping head provided in an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating steps of a method for suppressing a warping of a strip steel according to an embodiment of the present application;
fig. 3-6 are schematic diagrams illustrating implementation effects of a method for suppressing the warping of the strip steel according to an embodiment of the present application;
fig. 7 is a schematic block diagram of a device for suppressing a warping of a strip steel according to an embodiment of the present application.
Icon: 10-raising the head; 20-strip steel; 30-an anti-stripping water feeding device; 50-a band steel warping inhibiting device; 501-a signal receiving unit; 502-a control unit; 503-a first judgment unit; 504-second decision unit.
Detailed Description
The embodiment of the application provides a method and a device for inhibiting the warping of strip steel and strip steel finish rolling equipment, and solves the problem that the warping is generated in the process that the strip steel passes through a finish rolling unit in the prior art.
in order to solve the technical problems, the general idea of the embodiment of the application is as follows:
A strip steel warping inhibition method is applied to strip steel finish rolling equipment, the strip steel finish rolling equipment comprises a plurality of units (generally comprising F1-F7) which are sequentially arranged, and an anti-stripping water feeding device is arranged above and below an inlet of each unit, and the method comprises the following steps: before a steel biting signal of the unit is received, controlling an anti-stripping water feeding device below an inlet of the unit to be independently started; and after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
It should be noted that in the description of the present application, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
referring to fig. 1, there is shown a schematic view of a nose 10 produced when a strip 20 passes through a finishing mill train. In the rolling process of the strip steel 20, because the temperature of the strip steel 20 is high, the head of the strip steel is easy to warp upwards under the influence of internal stress to form a warp 10, and further the strip steel is clamped or the head of the strip steel is folded to form a defective coil, so that the smooth production is seriously influenced, the cropping amount of the strip steel is increased, and the yield of the strip steel is reduced, therefore, the prevention of the warp in the rolling process of the strip steel has important significance for the production and processing of the strip steel.
aiming at the problem, the purpose of inhibiting the warping of the strip steel is achieved by controlling the switch time sequence of the anti-stripping water feeding devices above and below the inlets of all the units in the strip steel finish rolling equipment.
Specifically, in the embodiment of the present application, the steel biting signal may be detected by each finishing mill group, specifically, whether the strip head completely enters the entry of the group is detected by conditions such as the current rolling pressure and the current rolling temperature of the group. In addition, the specific position of the head of the strip steel which is currently reached can be accurately detected through a temperature detection probe arranged in the finishing mill group, and then the anti-stripping water feeding devices above and below the inlet of each unit are controlled to feed anti-stripping water according to the position of the head of the strip steel and whether the unit bites steel.
referring to fig. 2, a schematic flow chart of steps of a method for suppressing a warping of a strip steel provided in an embodiment of the present application is shown, where the method includes:
and step S10, before the steel biting signal of the unit is received, controlling the anti-stripping water feeding device below the inlet of the unit to be independently started.
and step S20, after the steel biting signal of the unit is received, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
the method for suppressing the warping of the strip steel provided by the embodiment of the present application is described in detail with reference to fig. 3 to 6.
Referring to fig. 3, in the embodiment of the present application, the currently reached position of the head of the strip steel may be detected by a temperature detection probe inside the unit, and when the head of the strip steel 20 reaches the first unit (i.e., the F1 unit) of the finish rolling equipment and the F1 unit does not detect a steel biting signal, the strip steel 20 is lowered in temperature by controlling the strip water dropping device 30 below the inlet of the F1 unit to be independently activated, so that a temperature difference is formed between the upper surface and the lower surface of the strip steel (the upper surface temperature is greater than the lower surface temperature), and the strip steel 20 is further caused to generate a certain amount of downward bending tension, so as to inhibit the head of the strip steel 20 from being warped 10 before entering the F1.
Further, referring to fig. 4, after the F1 unit detects the steel biting signal (i.e. after the strip head completely enters the F1 unit), since the strip head has already smoothly entered the entrance of the F1 unit at this time, there is no need to worry about the problem of raising the head of the strip currently rolled by the F1 unit, after the F1 unit detects the steel biting signal, the strip water dropping preventing devices 30 above and below the entrance of the F1 unit can be simultaneously activated and simultaneously activated, so as to ensure that the working temperature of the rolls of the F1 unit is in a normal state and the surface processing quality of the strip steel 20 is ensured.
Further, referring to fig. 5, after the strip steel is rolled by the F1 set, the head of the processed strip steel is still at a high temperature and is still susceptible to internal stress to generate warping, so in the embodiment of the present application, when the head of the strip steel reaches the F2 set but the F2 set does not detect a steel biting signal, the strip steel head is controlled to be independently activated by the anti-peeling water feeding device 30 below the inlet of the F2 set, and a temperature difference is formed on the upper and lower surfaces of the strip steel head again, so as to inhibit the warping of the strip steel head in the process of passing through the F2 set.
Further, referring to fig. 6, after the F2 unit detects the steel biting signal (i.e. after the head of the strip steel completely enters the F2 unit), since there is no need to worry about the problem of raising the head of the strip steel currently rolled by the F2 unit, after the F2 unit detects the steel biting signal, the strip water dropping prevention devices 30 above and below the inlet of the F2 unit can be simultaneously started and started at the same time, so as to ensure that the working temperature of the rolls of the F2 unit is in a normal state and to ensure the surface processing quality of the strip steel 20.
similarly, for the F3 unit, the F4 unit, and other units in the following, in the embodiment of the present application, reference may be made to the F1 unit and the F2 unit, and the same control manner is adopted to control the strip water dropping device 30 to suppress the warping during the threading of the strip steel 20, so that details are not described here again.
It should be noted that, in the embodiment of the present application, the strip steel raising control method can be implemented by the strip steel raising control device 30 including, but not limited to, an electromagnetic valve, where the electromagnetic valve is electrically connected to a controller (e.g., a PLC, etc.), and then the controller performs on-off control on the electromagnetic valve according to a steel biting signal detected by each unit in the finish rolling equipment.
Further, considering that the strip steel with larger thickness and lower temperature is more easily warped, the thickness of the strip steel 20 is gradually reduced in the process of passing through each finishing mill group, and the strip steel is not easily affected by the internal stress to generate the warped end after the thickness of the strip steel is reduced to a certain thickness. Therefore, in an embodiment of the present application, whether the above-mentioned method for suppressing the warping of the strip steel needs to be performed may also be determined according to the rolling temperature of the strip steel when the strip steel passes through the unit and a preset temperature threshold.
Specifically, if the temperature of the head of the strip steel reaches the first unit (F1) and is greater than the preset temperature threshold, it indicates that the strip steel is not prone to warping, and therefore, the strip water feeding devices 30 above and below the inlet of the first unit can be controlled to be simultaneously started for the unit, so as to simultaneously protect the rollers above and below the unit, and further ensure the surface quality of the strip steel 20.
On the contrary, if the temperature of the strip head reaches the first unit (F1) and is less than the preset temperature threshold, it indicates that the warping of the strip head needs to be suppressed, therefore, in this embodiment, when the strip head reaches the first unit (F1) and the temperature of the strip head is greater than the preset temperature threshold, before the unit detects the steel biting signal, the strip-preventing water feeding device 30 below the inlet of the unit is controlled to be independently activated, and after the unit detects the steel biting signal, the strip-preventing water feeding device 30 above and below the inlet of the corresponding unit is controlled to be simultaneously activated.
Further, since the thickness of the strip steel is gradually reduced in the process of passing through each unit, in other words, the problem of warping is not easily generated, in the embodiment of the present application, the above method may be used only in the front units (e.g., F1-F4), before the units detect the steel biting signal, the strip water dropping prevention device 30 below the unit inlet is controlled to be separately activated, and after the units detect the steel biting signal, the strip water dropping prevention device 30 above and below the corresponding unit inlet is controlled to be simultaneously activated. And the later units (such as F5-F7) can directly control the anti-stripping water feeding device 30 above and below the inlet thereof to be started simultaneously.
for example, when the head of the strip steel reaches any one of the units F1-F4, if the temperature of the strip steel is lower than the preset temperature threshold, the strip water dropping prevention devices 30 below the inlet of the unit are controlled to be independently started before the unit detects a steel biting signal, and the strip water dropping prevention devices 30 above and below the inlet of the unit are controlled to be simultaneously started after the unit detects the steel biting signal. Further, when the head of the strip steel passes through the F4 unit and reaches the F5 and the following units, although the temperature of the head of the strip steel is lower than the preset temperature threshold value, the strip steel is not easy to warp due to the fact that the thickness of the strip steel is lower, and therefore the strip steel falling prevention water feeding devices 30 above and below the inlet of the F5 and the following units can be controlled to be started simultaneously, so that the rollers above and below the units are protected simultaneously, and the surface quality of the strip steel 20 is ensured.
In the embodiment of the present application, the temperature of the strip steel may be detected only when the strip steel head reaches the F1 machine set, and then the subsequent control may be performed according to the temperature when the strip steel head reaches the F1 machine set. Specifically, when the temperature of the head of the strip steel 20 reaching the F1 unit is lower than the preset temperature threshold, the F1-F4 unit is controlled to independently start the anti-stripping water feeding device 30 below the unit inlet before the steel biting signal is detected, and simultaneously start the anti-stripping water feeding devices 30 above and below the unit inlet after the steel biting signal is detected; when the temperature of the head of the strip steel 20 reaching the F1 unit is greater than or equal to the preset temperature threshold, controlling the F1-F4 and the following units to start the anti-stripping water feeding devices 30 above and below the unit inlet simultaneously before and after the steel biting signal is detected.
It should be noted that, in the embodiment of the present application, the temperature threshold may be set according to the type of the strip steel 20, and different temperature thresholds may be set for different types or specifications of the strip steel 20, so that the temperature threshold is not specifically limited herein.
further, the applicant found that, during the application process, the raising problem does not occur in some types of steel strips during the finish rolling (the result is influenced by factors such as the steel grade and the specification of the steel strip). Therefore, in an embodiment of the present application, it can also be determined whether to perform the above-mentioned strip warping prevention method according to the type of the strip currently being rolled. If the type is a preset type (the preset type is a type with a head raising problem in the rolling process), before the unit detects a steel biting signal, the anti-stripping water feeding devices 30 below the inlet of the unit are controlled to be independently started, and after the unit detects the steel biting signal, the anti-stripping water feeding devices 30 above and below the corresponding inlet of the unit are controlled to be simultaneously started. If the currently rolled strip steel is of a non-preset type (namely a type without a head raising problem in the rolling process), the anti-stripping water feeding devices 30 above and below the inlet of the unit are controlled to be started simultaneously before and after the unit detects a steel biting signal.
Specifically, in the embodiment of the present application, the preset type may be preset according to factors such as the steel type and specification (including thickness) of the strip steel 20, and then the worker selects the preset type according to the type of the currently processed strip steel during the processing process, so that the control of the strip water dropping device 30 according to the type can be realized. By the method, the head of the strip steel type with the head warping problem can be effectively inhibited from warping, and the strip steel type without the head warping problem can ensure the normal work of the roller by simultaneously throwing the upper and lower anti-stripping water, so as to ensure the surface quality of the strip steel 20.
In summary, the method for suppressing the warping of the strip steel provided in the embodiment of the present application has the following technical effects or advantages, compared with the prior art:
1. according to the method for inhibiting the warping of the strip steel, before the steel biting signal of the unit is received, the anti-stripping water feeding device below the inlet of the unit is controlled to be independently started, after the steel biting signal of the unit is received, the anti-stripping water feeding device above and below the inlet of the unit is controlled to be started simultaneously, temperature difference can be formed on the upper surface and the lower surface of the head of the strip steel in the threading process, and therefore downward bending tension with a certain size is generated, and the warping of the head of the strip steel is inhibited. Meanwhile, the method can control the anti-stripping water feeding devices above and below the corresponding unit inlet to be started simultaneously by immediately controlling the anti-stripping water feeding devices after receiving the steel biting signal of the unit, and can also control the working temperature of the roller on the premise of ensuring no warping, thereby improving the processing quality of the strip steel.
2. according to the method for inhibiting the warping of the strip steel, whether warping is inhibited or not is judged according to the type of the strip steel and the temperature of the strip steel, and the working temperature of a roller can be better managed on the premise that warping is not generated, so that the processing quality of the strip steel is ensured.
based on the same inventive concept, the embodiment of the present application further provides a device 50 for suppressing the warping of the strip steel, which implements the method described in the embodiment of the present application.
Referring to fig. 7, the strip warping-inhibiting apparatus 50 includes a signal receiving unit 501, a control unit 502, a first judging unit 503, and a second judging unit 504.
The signal receiving unit 501 is used for receiving a steel biting signal of the unit; the control unit 502 is configured to control the anti-peeling water feeding devices below the inlets of the units to be independently started before receiving the steel biting signals of the units, and control the anti-peeling water feeding devices arranged above and below the inlets of the units corresponding to the steel biting signals to be simultaneously started after receiving the steel biting signals of the units.
The first judging unit 503 is configured to judge whether a currently rolled strip steel is of a preset type, and if the currently rolled strip steel is of the preset type, control the anti-peeling water feeding devices below the machine set inlet to be independently started before receiving a steel biting signal of the machine set, and control the anti-peeling water feeding devices above and below the machine set inlet corresponding to the steel biting signal to be simultaneously started after receiving the steel biting signal of the machine set; and if the type is not the preset type, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
the second judging unit 504 is configured to judge whether the rolling temperature of the strip steel is less than a preset threshold, and if the rolling temperature is less than the preset threshold, control the anti-peeling water feeding devices below the machine set inlet to be independently started before receiving a steel biting signal of the machine set, and control the anti-peeling water feeding devices above and below the machine set inlet corresponding to the steel biting signal to be simultaneously started after receiving the steel biting signal of the machine set; and if the rolling temperature is greater than or equal to a preset threshold value, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
Specifically, in this embodiment of the present application, the control unit 502 is specifically configured to: when the head of the strip steel reaches the first unit and does not receive a steel biting signal of the first unit, controlling the anti-stripping water feeding device below the inlet of the first unit to be independently started; after a steel biting signal of the first unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the first unit to be started simultaneously; when the head of the strip steel reaches the second unit and does not receive a steel biting signal of the second unit, controlling the anti-stripping water feeding device below the inlet of the second unit to be independently started, and keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time; and after a steel biting signal of the second unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the second unit to be started at the same time, and continuously keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time.
it should be noted that, in the embodiment of the present application, each unit in the finish rolling equipment may include, but is not limited to, a temperature sensor and a pressure sensor, and whether the unit bites steel currently may be determined by detecting the current rolling temperature and rolling pressure of the unit through the temperature sensor and the pressure sensor, and then corresponding signals are transmitted to the signal receiving unit and fed back to the control unit. Specifically, in the embodiment of the present application, the control unit may be any device having a signal processing function and a control function, such as a PLC (Programmable Logic Controller) or the like.
Further, in the embodiment of the present application, the first determining unit 503 and the second determining unit 504 may be sub-modules (e.g., a comparator, etc.) included in the control unit 502 for performing data analysis, and then the control unit 502 performs corresponding control according to the analysis results of the first determining unit 503 and the second determining unit 504.
since the device for suppressing the warping of the strip steel described in this embodiment is a device for suppressing the warping of the strip steel used in the method for suppressing the warping of the strip steel described in this embodiment, based on the method for suppressing the warping of the strip steel described in this embodiment, those skilled in the art can understand the specific implementation manner and various variations of the device for suppressing the warping of the strip steel described in this embodiment, and therefore, how to implement the method described in this embodiment by the device for suppressing the warping of the strip steel is not described in detail here. The band steel warping inhibiting device adopted by the band steel warping inhibiting method in the embodiment of the present application is within the protection scope of the present application.
in addition, this application embodiment still provides a belted steel finish rolling equipment, belted steel finish rolling equipment is including a plurality of units that arrange in proper order, and the entry below of every unit all is provided with the anti-stripping water and puts in the device, and belted steel finish rolling equipment still includes as above belted steel warp head suppression device, in order to pass through the device suppression belted steel produces the warp head in the finish rolling process.
through the strip steel finish rolling equipment provided by the embodiment of the application, the head of the strip steel can be effectively inhibited from generating the warping in the strip steel rolling process, so that the influence of the warping on the strip steel rolling process is avoided.
for the same reason, the method of the embodiment of the present application is not described in detail here as to how the strip finishing mill can carry out the method.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
the present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The strip steel warping inhibition method is characterized by being applied to strip steel finish rolling equipment, wherein the strip steel finish rolling equipment comprises a plurality of units which are sequentially arranged, and anti-stripping water feeding devices are arranged above and below inlets of the units, and the method comprises the following steps:
Before a steel biting signal of the unit is received, controlling an anti-stripping water feeding device below an inlet of the unit to be independently started;
And after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
2. The method of claim 1, wherein prior to the step of controlling the anti-spall water launch device below the unit inlet to be activated alone prior to receiving the unit bite signal, the method further comprises:
Judging whether the currently rolled strip steel is of a preset type or not;
if the type is a preset type, controlling the anti-stripping water feeding devices below the inlet of the unit to be independently started before a steel biting signal of the unit is received, and controlling the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after the steel biting signal of the unit is received;
and if the type is not the preset type, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
3. The method of claim 1, wherein prior to the step of controlling the anti-spall water launch device below the unit inlet to be activated alone prior to receiving the unit bite signal, the method further comprises:
Judging whether the rolling temperature of the strip steel is less than a preset threshold value or not;
If the rolling temperature is lower than a preset threshold value, controlling an anti-stripping water feeding device below the inlet of the unit to be independently started before a steel biting signal of the unit is received, and controlling anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after the steel biting signal of the unit is received;
and if the rolling temperature is greater than or equal to a preset threshold value, controlling the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
4. the method according to any one of claims 1 to 3, wherein the strip finishing equipment includes a first unit and a second unit arranged in a strip rolling direction, and the step of controlling the strip water feeding devices provided below the inlets of the units to be individually activated before the bite signal of the units is received, and controlling the strip water feeding devices provided above and below the inlets of the units corresponding to the bite signal to be simultaneously activated after the bite signal of the units is received, includes:
when the head of the strip steel reaches the first unit and does not receive a steel biting signal of the first unit, controlling the anti-stripping water feeding device below the inlet of the first unit to be independently started;
After a steel biting signal of the first unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the first unit to be started simultaneously;
When the head of the strip steel reaches the second unit and does not receive a steel biting signal of the second unit, controlling the anti-stripping water feeding device below the inlet of the second unit to be independently started, and keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time;
And after a steel biting signal of the second unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the second unit to be started at the same time, and continuously keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time.
5. The utility model provides a belted steel warp first suppression device, its characterized in that is applied to belted steel finish rolling equipment, belted steel finish rolling equipment is including a plurality of units that arrange in proper order, and all is provided with the anti-stripping water above and below the entry of every unit and puts in the device, the device includes:
The signal receiving unit is used for receiving a steel biting signal of the unit;
The control unit is used for controlling the anti-stripping water feeding device below the inlet of the unit to be independently started before a steel biting signal of the unit is received; and
And after receiving a steel biting signal of the unit, controlling the anti-stripping water feeding devices arranged above and below the unit inlet corresponding to the steel biting signal to be started simultaneously.
6. the apparatus of claim 5, further comprising a first determining unit to:
judging whether the currently rolled strip steel is of a preset type or not;
if the type is a preset type, the control unit controls the anti-stripping water feeding devices below the inlet of the unit to be independently started before receiving a steel biting signal of the unit, and controls the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal to be simultaneously started after receiving the steel biting signal of the unit;
if the type is not the preset type, the control unit controls the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
7. the apparatus of claim 5, further comprising a second determining unit to:
Judging whether the rolling temperature of the strip steel is less than a preset threshold value or not;
If the rolling temperature is lower than a preset threshold value, before the control unit receives a steel biting signal of the unit, the anti-stripping water feeding devices below the inlet of the unit are controlled to be independently started, and after the steel biting signal of the unit is received, the anti-stripping water feeding devices arranged above and below the inlet of the unit corresponding to the steel biting signal are controlled to be simultaneously started;
and if the rolling temperature is greater than or equal to a preset threshold value, the control unit controls the anti-stripping water feeding devices above and below the inlet of the unit to be started simultaneously before and after the steel biting signal of the unit is received.
8. The apparatus according to any one of claims 5 to 7, wherein the strip finishing plant comprises a first train and a second train arranged along the rolling direction of the strip, the control unit being in particular configured to:
When the head of the strip steel reaches the first unit and does not receive a steel biting signal of the first unit, controlling the anti-stripping water feeding device below the inlet of the first unit to be independently started;
after a steel biting signal of the first unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the first unit to be started simultaneously;
When the head of the strip steel reaches the second unit and does not receive a steel biting signal of the second unit, controlling the anti-stripping water feeding device below the inlet of the second unit to be independently started, and keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time;
And after a steel biting signal of the second unit is received, controlling the anti-stripping water feeding devices above and below the inlet of the second unit to be started at the same time, and continuously keeping the anti-stripping water feeding devices above and below the inlet of the first unit to be started at the same time.
9. the strip steel finish rolling equipment is characterized by comprising a plurality of units which are sequentially arranged, wherein an anti-stripping water feeding device is arranged above and below an inlet of each unit;
The strip finishing apparatus further comprising the strip warping-inhibiting device as set forth in any one of claims 5 to 8, to inhibit the generation of warping in the strip during the finishing rolling by the device.
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| CN201910834703.7A CN110538882B (en) | 2019-09-05 | 2019-09-05 | Band steel warp suppression device and band steel finish rolling equipment |
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| CN201910834703.7A CN110538882B (en) | 2019-09-05 | 2019-09-05 | Band steel warp suppression device and band steel finish rolling equipment |
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