CN113305160A - Descaling machine pinch roll control method and device and strip steel descaling system - Google Patents
Descaling machine pinch roll control method and device and strip steel descaling system Download PDFInfo
- Publication number
- CN113305160A CN113305160A CN202110472761.7A CN202110472761A CN113305160A CN 113305160 A CN113305160 A CN 113305160A CN 202110472761 A CN202110472761 A CN 202110472761A CN 113305160 A CN113305160 A CN 113305160A
- Authority
- CN
- China
- Prior art keywords
- target
- descaler
- width
- pressure
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010008 shearing Methods 0.000 claims description 57
- 238000011144 upstream manufacturing Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 15
- 230000001133 acceleration Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 238000005096 rolling process Methods 0.000 description 13
- 238000007789 sealing Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 238000005098 hot rolling Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 241000277275 Oncorhynchus mykiss Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a control method and a device for pinch rolls of a descaler and a strip steel descaling system, which are applied to the strip steel descaling system, wherein the system comprises the descaler, the descaler comprises pinch rolls, and the method comprises the following steps: obtaining the target width of the intermediate blank; determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure; and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
Description
Technical Field
The invention relates to the field of steel rolling, in particular to a descaling machine pinch roll control method and device and a strip steel descaling system.
Background
In the hot rolling process, impurities such as iron scales are generated on the surface of the strip steel after high-temperature refining and rough rolling, the strip steel needs to be descaled by a descaler through high-pressure water washing, and then the descaled strip steel is subjected to finish rolling through a rolling mill.
In order to ensure the hot detection precision of the strip steel in the subsequent rolling process, the water sealing effect at the pinch roll of the descaler is particularly important, but if the pressure of the pinch roll is too high, the pinch roll is greatly abraded, and the service life of the pinch roll is further shortened.
Therefore, how to reduce the abrasion of the pinch roll while improving the water sealing effect is a problem which needs to be solved at present.
Disclosure of Invention
The embodiment of the application provides a control method and device for pinch rolls of a descaler and a strip steel descaling system, solves the technical problem that the water sealing effect and the service life of the pinch rolls of the descaler are incompatible in the prior art, and reduces the abrasion of the pinch rolls while ensuring the water sealing effect of the pinch rolls of the descaler.
In a first aspect, the application provides a control method for pinch rolls of a descaler, which is applied to a strip steel descaling system, the system comprises the descaler, the descaler comprises the pinch rolls, and the method comprises the following steps:
obtaining the target width of the intermediate blank;
determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
Preferably, the determining a target pressure corresponding to the target width according to the target width and the corresponding relationship between the width and the pressure includes:
if the target width is smaller than or equal to 1300mm, determining the target pressure to be 20kN according to the corresponding relation between the width and the pressure;
if the target width is larger than 1300mm and smaller than 1600mm, determining that the target pressure is 40kN according to the corresponding relation between the width and the pressure;
and if the target width is larger than or equal to 1600mm, determining that the target pressure is 60kN according to the corresponding relation between the width and the pressure.
Preferably, the strip descaling system includes a shearing device upstream of the descaler, and before the obtaining of the target width of the intermediate slab, the method further includes:
detecting a target signal for representing that the head of the intermediate blank passes through a target position;
and when the target signal is detected, controlling the shearing device to cut the head of the intermediate blank after a first preset time.
Preferably, the strip steel descaling system comprises a conveying roller way, the conveying roller way is located upstream of the descaler and is used for conveying the intermediate billet at a first speed, and after the target signal is detected and the intermediate billet is cut by the shearing device after a first preset time period, the method further comprises:
and after a second preset time, controlling the running speed of the conveying roller way to change from the first speed to a second speed based on a preset acceleration, wherein the second speed is the conveying speed of the strip steel in the equipment positioned at the downstream of the descaler.
Preferably, the controlling the shearing device to crop the intermediate blank specifically includes:
and controlling the shearing device to cut the head of the intermediate blank at a preset shearing speed based on a preset advance rate, wherein the preset shearing speed is greater than the running speed.
In a second aspect, the present application provides a control device for pinch rolls of a strip mill, the control device being used in a strip mill system including the strip mill, the strip mill including the pinch rolls, the device comprising:
a width obtaining unit for obtaining a target width of the intermediate billet;
the pressure determining unit is used for determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and the pinch roll control unit is used for controlling the pinch rolls to pinch the intermediate blank at the target pressure so as to enable the descaler to descale the intermediate blank.
Preferably, the pressure determination unit is configured to:
if the target width is smaller than or equal to 1300mm, determining the target pressure to be 20kN according to the corresponding relation between the width and the pressure;
if the target width is larger than 1300mm and smaller than 1600mm, determining that the target pressure is 40kN according to the corresponding relation between the width and the pressure;
and if the target width is larger than or equal to 1600mm, determining that the target pressure is 60kN according to the corresponding relation between the width and the pressure.
Preferably, the strip descaling system includes a shearing device located upstream of the descaler, the device further including:
the detection unit is used for detecting a target signal for representing that the head of the intermediate blank passes through a target position;
and the shearing control unit is used for controlling the shearing device to cut the head of the intermediate blank after the target signal is detected for a first preset time.
Preferably, the strip descaling system comprises a transfer table located upstream of the descaler for transferring the intermediate slab at a first speed, the apparatus further comprising:
and the speed changing unit is used for controlling the running speed of the conveying roller way to change from the first speed to a second speed based on a preset acceleration after a second preset time, wherein the second speed is the strip steel conveying speed in equipment positioned at the downstream of the descaler.
Preferably, the shear control unit is configured to:
and controlling the shearing device to cut the head of the intermediate blank at a preset shearing speed based on a preset advance rate, wherein the preset shearing speed is greater than the running speed.
In a third aspect, the present application provides a strip descaling system comprising:
the descaling machine comprises a pinch roll for pinching the intermediate billet;
a controller in communication connection with the phosphorus removal machine;
the controller is used for acquiring the target width of the intermediate blank and determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and the controller is used for controlling the pinch rolls to pinch the intermediate blank at the target pressure so as to enable the descaler to descale the intermediate blank.
Preferably, the system further comprises:
the intermediate billet detection device is used for detecting a target signal for representing that the head of the intermediate billet passes through a target position and sending the target signal to the controller;
the shearing device is positioned at the upstream of the descaler, is in communication connection with the controller and is used for cutting the head of the intermediate blank;
and the controller is used for controlling the shearing device to cut the head of the intermediate blank after receiving the target signal and after a first preset time.
Preferably, the system further comprises:
the conveying roller way is positioned at the upstream of the descaling machine, is in communication connection with the controller and is used for conveying the intermediate billet at a first speed;
and the controller is used for controlling the running speed of the conveying roller way to change from the first speed to a second speed based on preset acceleration after the shearing device cuts the head of the intermediate billet for a second preset time, wherein the second speed is the strip steel conveying speed in equipment located at the downstream of the descaler.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the methods described above.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
in the control method of the pinch roll of the descaler, the target width of the intermediate blank is obtained; determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure; and then controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
In the scheme, the pinch rolls apply target pressures corresponding to different target widths to intermediate billets with different target widths. The problem that the pinch roll pressure is too big to lead to wearing and tearing great neither can take place like this, also can not lead to the poor problem of water sealing effect because of pinch roll pressure undersize yet, promptly, carry out self-adaptation adjustment to pinch roll pressure based on middle base width, reduce the wearing and tearing of pinch roll when improving water sealing effect, further guaranteed the quality of export strip steel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flowchart of a control method for a pinch roll of a descaler according to an embodiment of the present invention;
FIG. 2 is a schematic view of a control device for pinch rolls of a descaler according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a strip steel descaling system according to a third embodiment of the present invention.
Detailed Description
The embodiment of the application provides a control method for the pinch roll of the descaler, and solves the technical problem that the water sealing effect and the service life of the pinch roll of the descaler in the prior art are incompatible.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows: a control method of pinch rolls of a descaler is applied to a strip steel descaling system, the system comprises the descaler, the descaler comprises the pinch rolls, and the method comprises the following steps: obtaining the target width of the intermediate blank; determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure; and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
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.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Example one
The embodiment provides a control method of pinch rolls of a descaler, which is applied to a strip steel descaling system, the system comprises the descaler, the descaler comprises pinch rolls, and as shown in fig. 1, the method is a flow chart of the control method of pinch rolls of the descaler provided by the embodiment of the description, and the method comprises the following steps:
step S101: obtaining the target width of the intermediate blank;
step S102: determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
step S103: and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
The control method for the pinch rolls of the descaler provided by the embodiment of the specification is mainly applied to a strip steel descaling system on a hot rolling production line. The hot rolling mill train can be a 2250 hot rolling mill train, a 1580 hot rolling mill train, a 1700 hot rolling mill train, or the like. The intermediate billet after the high-temperature rough rolling of the strip steel is descaled by a dephosphorizing machine of a strip steel descaling system, the temperature of the intermediate billet at the moment is usually 500-600 ℃, and the descaling mode is mainly completed by spraying high-pressure water to the upper surface and the lower surface of the intermediate billet through a descaling header pipe in the descaler.
In the prior art, the pressure of the pinch roll of the descaler is set in a single and unchangeable mode, and therefore the problem that the water sealing effect of the descaler is poor is often caused. If the water sealing effect of the descaler is poor, the descaling water leaks out from the gap between the intermediate billet and the pinch roll of the descaler, so that water is accumulated on the surface of the intermediate billet, the temperature drop of the intermediate billet is increased, and the thermal detection precision is influenced. The temperature drop of the intermediate billet is directly related to the rolling stability of subsequent strip steel, and is the key of the stability of finish rolling and the stability of tail cutting precision.
Step S101: and acquiring the target width of the intermediate blank.
The intermediate blank of the strip comprises a number of dimensions, such as thickness, width, etc., wherein the width specification of the intermediate blank has the most significant effect on the descaler. The target width of the intermediate billet may be the width of the intermediate billet entering the strip descaling system. The target width can be obtained by inputting by an operator through an interactive device or by detecting an intermediate blank entering the strip steel descaling system in real time through a detection device, which is not limited herein. Taking the detection of the width of the intermediate blank by the detection device as an example, the target width can be obtained by scanning the surface of the intermediate blank by infrared equipment, or the image of the intermediate blank is acquired by image acquisition equipment, and the target width is obtained by analyzing the image of the intermediate blank by machine vision.
Optionally, the strip descaling system includes a shearing device upstream of the descaler, and before the obtaining the target width of the intermediate slab, the method further includes: detecting a target signal for representing that the head of the intermediate blank passes through a target position; and when the target signal is detected, controlling the shearing device to cut the head of the intermediate blank after a first preset time.
It should be noted that the basic process after the strip steel intermediate blank enters the strip steel descaling system is as follows: the intermediate billet enters the strip steel descaling system through the conveying roller way, and during the operation of the intermediate billet on the conveying roller way, the intermediate billet firstly passes through a detection device arranged at a target position on the conveying roller way and then passes through a shearing device arranged at the downstream of the detection device, and the head of the intermediate billet is sheared by the shearing device. And the intermediate billet with the sheared head continuously runs to a pinch roll of the descaler and is pinch-fed into the descaler by the pinch roll for descaling.
When the intermediate billet of the strip steel is subjected to rough rolling, the head of the intermediate billet of the strip steel generally becomes irregular shapes such as tongue shapes and the like due to different ductility, and the process requirements are not met. It is necessary to cut off the head of the intermediate billet before it enters the descaler. The descaling machine is provided with a shearing device, the shearing device can be a guillotine, a flying shear and the like, and the embodiment of the specification mainly uses the flying shear as the shearing device. The target position can be the position of a strip steel head detection device arranged in the strip steel descaling system. The strip steel head detection device can be a hot metal detector for detecting the strip steel through temperature, an infrared detector for detecting the strip steel through infrared light, and the like. The first preset time period may be a time period from when the head of the intermediate billet starts to run from the target position to when the head of the shearing device is cut, that is, a time period from when the target signal is generated to when the head of the shearing device is cut.
The strip steel descaling system comprises a controller which is used for controlling each device in the system. After the intermediate billet enters the strip steel descaling system and reaches the target position, the strip steel detection device can detect the head of the intermediate billet and generate a target signal to be sent to the controller, and the controller can obtain a first preset time length according to the running speed of the intermediate billet, the distance from the target position to the shearing device and the cropping length of the shearing device. The length of the crop end of the intermediate billet can be set according to the actual condition, the setting mode can be preset in a strip steel descaling system, and the real-time input setting can also be carried out at a control end by an operator. For example: if the running speed of the intermediate billet is 1m/s, the length of the crop end is 1m, and the distance from the target position to the shearing device is 5m, the first preset time length is 6 s.
Optionally, the strip steel descaling system includes a conveying roller located upstream of the descaler, and configured to convey the intermediate slab at a first speed, and after the target signal is detected and the first preset time period elapses, the method further includes controlling the shearing device to cut the end of the intermediate slab, and the method further includes: and after a second preset time, controlling the running speed of the conveying roller way to change from the first speed to a second speed based on a preset acceleration, wherein the second speed is the conveying speed of the strip steel in the equipment positioned at the downstream of the descaler.
The running of the intermediate billet is realized by a conveying roller way, and the running speed of the conveying roller way can be similar to that of the intermediate billet. The first speed is the running speed of the intermediate blank before the intermediate blank is cut by the shearing device. In order to enable the running speed of each roller way in the strip steel descaling system to be consistent with the rolling speed of a downstream rolling unit of the strip steel descaling system, the speed of the intermediate billet needs to be reduced after the intermediate billet is cut. If the running speed of each roller way is suddenly increased or decreased, the equipment can be damagedAnd (4) hurting. In the scheme, after the intermediate billet is cut, after a second preset time, the controller controls the running speed of the conveying roller way to slowly decrease from the first speed to the second speed based on the preset acceleration, and the second speed is consistent with the rolling speed of the rolling unit at the downstream of the strip steel descaling system. At a first speed of 1.1m/s and an acceleration of-0.5 m/s2Taking the second speed of 0.8m/s and the second preset time of 8s as an example, after the intermediate billet is cut, the intermediate billet starts to take-0.5 m/s after 8s2The acceleration is reduced to 0.8m/s after 0.6s of running speed.
Optionally, controlling the shearing device to crop the intermediate billet specifically includes: and controlling the shearing device to cut the head of the intermediate blank at a preset shearing speed based on a preset advance rate, wherein the preset shearing speed is greater than the running speed.
In the specific implementation process, the flying shears drive the flying shears to shear through the eccentric wheel, so the shearing direction of the flying shears is not absolutely vertical up and down. During shearing, the flying shears have relative horizontal speed, and if the horizontal speed is lower than the running speed of the intermediate billet, the intermediate billet can collide with the flying shears. Therefore, the shearing device needs to be controlled to cut the end of the intermediate billet at a preset shearing speed which is greater than the running speed of the intermediate billet, and the preset advance rate can be in a range of 0-10%.
Step S102: and determining the target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure.
Before the head of the intermediate billet enters the descaler, the pinch roll of the descaler clamps the intermediate billet, and then the intermediate billet is sent into the descaler to be descaled. In the embodiment of the present description, the corresponding relationship between the width and the pressure may be preset, and when the target width is obtained, the target pressure corresponding to the target width is found according to the corresponding relationship between the width and the pressure. And the controller controls the pinch roll to pinch the intermediate billet by the target pressure according to the determined target pressure. In the specific implementation process, a hydraulic device can be arranged in the strip steel descaling system, the controller can generate a hydraulic control signal based on the target pressure and send the hydraulic control signal to the hydraulic device, and the hydraulic device controls the pressure of the pinch roller for pinching the intermediate blank according to the hydraulic control signal after receiving the hydraulic control signal.
Optionally, the determining a target pressure corresponding to the target width according to the target width and a corresponding relationship between the width and the pressure includes: if the target width is smaller than or equal to 1300mm, determining the target pressure to be 20kN according to the corresponding relation between the width and the pressure; if the target width is larger than 1300mm and smaller than 1600mm, determining that the target pressure is 40kN according to the corresponding relation between the width and the pressure; and if the target width is larger than or equal to 1600mm, determining that the target pressure is 60kN according to the corresponding relation between the width and the pressure.
Step S103: and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
The pinch roll clamps the intermediate blank into the descaler at a target pressure, and the controller controls a plurality of descaling header pipes in the descaler to spray high-pressure water so as to clean impurities such as iron scales on the upper surface and the lower surface of the intermediate blank. The target pressure is adaptively adjusted according to the target width of the intermediate billet, so that the descaling machine can have good water sealing effect when the descaling machine descales the intermediate billets with different widths.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
and the pinch rolls apply target pressures corresponding to different target widths to the intermediate blanks with different target widths. The problem that the pinch roll pressure is too big to lead to wearing and tearing great can not take place like this, also can not lead to sealing the poor problem of water effect because of pinch roll pressure undersize, reduce the wearing and tearing of pinch roll when improving the water effect, further guaranteed the quality of export strip steel.
Example two
Based on the same inventive concept, the embodiment of the present specification provides a control device 200 for pinch rolls of a descaler, as shown in fig. 2, applied to a strip steel descaling system, the system including a descaler, the descaler including pinch rolls, the device 200 including:
a width obtaining unit 201, configured to obtain a target width of the intermediate blank;
a pressure determining unit 202, configured to determine a target pressure corresponding to the target width according to the target width and a corresponding relationship between the width and the pressure;
and the pinch roll control unit 203 is used for controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
Optionally, a pressure determination unit 202 for:
if the target width is smaller than or equal to 1300mm, determining the target pressure to be 20kN according to the corresponding relation between the width and the pressure;
if the target width is larger than 1300mm and smaller than 1600mm, determining that the target pressure is 40kN according to the corresponding relation between the width and the pressure;
and if the target width is larger than or equal to 1600mm, determining that the target pressure is 60kN according to the corresponding relation between the width and the pressure.
Optionally, the strip descaling system comprises a shearing device upstream of the descaler, and the apparatus 200 further comprises:
the detection unit is used for detecting a target signal for representing that the head of the intermediate blank passes through a target position;
and the shearing control unit is used for controlling the shearing device to cut the head of the intermediate blank after the target signal is detected for a first preset time.
Optionally, the strip descaling system comprises a transfer table located upstream of the descaler for transferring the intermediate slab at a first speed, the apparatus 200 further comprising:
and the speed changing unit is used for controlling the running speed of the conveying roller way to change from the first speed to a second speed based on a preset acceleration after a second preset time, wherein the second speed is the strip steel conveying speed in equipment positioned at the downstream of the descaler.
Optionally, a shear control unit for:
and controlling the shearing device to cut the head of the intermediate blank at a preset shearing speed based on a preset advance rate, wherein the preset shearing speed is greater than the running speed.
With regard to the above-described apparatus, the specific functions of the respective units have been described in detail in the embodiment of the control method of the pinch roll of the descaler provided in the embodiment of the present specification, and will not be described in detail herein.
EXAMPLE III
Based on the same inventive concept, the present specification provides a strip steel descaling system 300, as shown in fig. 3, including:
the descaler 301 includes pinch rollers 3012 for pinching the intermediate slab;
a controller 302 in communication with the phosphorus removal machine 301;
the controller 302 is configured to obtain a target width of the intermediate billet, and determine a target pressure corresponding to the target width according to the target width and a corresponding relationship between the width and the pressure;
and the controller 302 is used for controlling the pinch rollers 3012 to pinch the intermediate billet at the target pressure so that the descaler 301 descales the intermediate billet.
Preferably, the system 300 further comprises:
the intermediate billet detection device 303 is used for detecting a target signal for representing that the head of the intermediate billet passes through a target position and sending the target signal to the controller 302;
the shearing device 304 is positioned at the upstream of the descaler 301, is in communication connection with the controller 302 and is used for cutting the head of the intermediate blank;
the controller 302 is configured to control the shearing device 304 to crop the intermediate slab after a first preset time after receiving the target signal.
Preferably, the system 300 further comprises:
a conveying roller way 305, located upstream of the descaler 301, in communication with the controller 302, for conveying the intermediate billets at a first speed;
and the controller 302 is configured to control the running speed of the conveying roller 305 to change from the first speed to a second speed based on the preset acceleration after controlling the shearing device 304 to cut the end of the intermediate billet for a second preset time, where the second speed is the strip conveying speed in the equipment located downstream of the descaler 301.
Optionally, the system 300 further comprises: and the hydraulic device 306 is used for receiving a pressure control signal from the controller 302 and controlling the pressure of the pinch rollers 3012 for pinching the intermediate blank according to the pressure control signal.
Example four
Based on the same inventive concept, embodiments of the present specification provide a computer-readable storage medium having stored thereon a computer program that, when executed by a processor, performs the steps of any of the foregoing descaler pinch roll control methods.
Since the electronic device described in this embodiment is an electronic device used for implementing the method for processing information in this embodiment, a person skilled in the art can understand the specific implementation manner of the electronic device of this embodiment and various variations thereof based on the method for processing information described in this embodiment, and therefore, how to implement the method in this embodiment by the electronic device is not described in detail here. Electronic devices used by those skilled in the art to implement the method for processing information in the embodiments of the present application are all within the scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A control method for pinch rolls of a descaler is applied to a strip steel descaling system, the system comprises the descaler, the descaler comprises pinch rolls, and the method comprises the following steps:
obtaining the target width of the intermediate blank;
determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and controlling the pinch rolls to pinch the intermediate blank at the target pressure so that the descaler descales the intermediate blank.
2. The method of controlling pinch rolls of a descaler of claim 1, wherein said determining a target pressure corresponding to said target width based on said target width and a correspondence between width and pressure comprises:
if the target width is smaller than or equal to 1300mm, determining the target pressure to be 20kN according to the corresponding relation between the width and the pressure;
if the target width is larger than 1300mm and smaller than 1600mm, determining that the target pressure is 40kN according to the corresponding relation between the width and the pressure;
and if the target width is larger than or equal to 1600mm, determining that the target pressure is 60kN according to the corresponding relation between the width and the pressure.
3. The method of controlling pinch rolls of a descaler of claim 1, wherein said strip descaling system includes a shearing device upstream of said descaler, and prior to said obtaining a target width of the intermediate billet, said method further comprises:
detecting a target signal for representing that the head of the intermediate blank passes through a target position;
and when the target signal is detected, controlling the shearing device to cut the head of the intermediate blank after a first preset time.
4. The method of claim 3, wherein the strip descaling system includes a transfer table upstream of the descaler for transferring the intermediate slab at a first speed, and wherein the method further comprises, after the shearing device is controlled to crop the intermediate slab after a first predetermined time period after the target signal is detected:
and after a second preset time, controlling the running speed of the conveying roller way to change from the first speed to a second speed based on a preset acceleration, wherein the second speed is the conveying speed of the strip steel in the equipment positioned at the downstream of the descaler.
5. The method of controlling pinch rolls of a descaler of claim 4, wherein said controlling said shearing device to crop said intermediate billet specifically comprises:
and controlling the shearing device to cut the head of the intermediate blank at a preset shearing speed based on a preset advance rate, wherein the preset shearing speed is greater than the running speed.
6. The pinch roll control device of the descaler is applied to a strip steel descaling system, the system comprises the descaler, the descaler comprises pinch rolls, and the device comprises:
a width obtaining unit for obtaining a target width of the intermediate billet;
the pressure determining unit is used for determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and the pinch roll control unit is used for controlling the pinch rolls to pinch the intermediate blank at the target pressure so as to enable the descaler to descale the intermediate blank.
7. A strip descaling system, comprising:
the descaling machine comprises a pinch roll for pinching the intermediate billet;
a controller in communication connection with the phosphorus removal machine;
the controller is used for acquiring the target width of the intermediate blank and determining target pressure corresponding to the target width according to the target width and the corresponding relation between the width and the pressure;
and the controller is used for controlling the pinch rolls to pinch the intermediate blank at the target pressure so as to enable the descaler to descale the intermediate blank.
8. The strip descaling system of claim 7, further comprising:
the intermediate billet detection device is used for detecting a target signal for representing that the head of the intermediate billet passes through a target position and sending the target signal to the controller;
the shearing device is positioned at the upstream of the descaler, is in communication connection with the controller and is used for cutting the head of the intermediate blank;
and the controller is used for controlling the shearing device to cut the head of the intermediate blank after receiving the target signal and after a first preset time.
9. The strip descaling system of claim 8, further comprising:
the conveying roller way is positioned at the upstream of the descaling machine, is in communication connection with the controller and is used for conveying the intermediate billet at a first speed;
and the controller is used for controlling the running speed of the conveying roller way to change from the first speed to a second speed based on preset acceleration after the shearing device cuts the head of the intermediate billet for a second preset time, wherein the second speed is the strip steel conveying speed in equipment located at the downstream of the descaler.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110472761.7A CN113305160B (en) | 2021-04-29 | 2021-04-29 | Descaling machine pinch roll control method and device and strip steel descaling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110472761.7A CN113305160B (en) | 2021-04-29 | 2021-04-29 | Descaling machine pinch roll control method and device and strip steel descaling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113305160A true CN113305160A (en) | 2021-08-27 |
| CN113305160B CN113305160B (en) | 2023-02-03 |
Family
ID=77371490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110472761.7A Active CN113305160B (en) | 2021-04-29 | 2021-04-29 | Descaling machine pinch roll control method and device and strip steel descaling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113305160B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558897A (en) * | 2022-02-28 | 2022-05-31 | 首钢京唐钢铁联合有限责任公司 | Fixed-width machine rhythm control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161053A (en) * | 2010-02-23 | 2011-08-24 | 宝山钢铁股份有限公司 | Controlling method of delaying water leakage of pinch roll |
| KR20140029763A (en) * | 2012-08-30 | 2014-03-11 | 현대제철 주식회사 | Method for controlling descaler |
| CN106903174A (en) * | 2017-03-30 | 2017-06-30 | 首钢京唐钢铁联合有限责任公司 | Method for reducing temperature drop of head of intermediate billet |
| CN110153206A (en) * | 2019-05-28 | 2019-08-23 | 北京首钢股份有限公司 | A kind of control method and device of essence de-scaling pinch roller water shutoff |
| CN110355221A (en) * | 2019-06-06 | 2019-10-22 | 山东钢铁股份有限公司 | A kind of hot-rolled strip production line essence de-scaling pinch roller adjustment system and method |
| CN110871218A (en) * | 2019-11-28 | 2020-03-10 | 宝钢特钢韶关有限公司 | Intermediate billet descaling system, descaling process and steel rolling system |
| CN111420987A (en) * | 2020-03-24 | 2020-07-17 | 凌源钢铁股份有限公司 | Medium-width strip long-distance continuous rolling method and rolling line |
-
2021
- 2021-04-29 CN CN202110472761.7A patent/CN113305160B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161053A (en) * | 2010-02-23 | 2011-08-24 | 宝山钢铁股份有限公司 | Controlling method of delaying water leakage of pinch roll |
| KR20140029763A (en) * | 2012-08-30 | 2014-03-11 | 현대제철 주식회사 | Method for controlling descaler |
| CN106903174A (en) * | 2017-03-30 | 2017-06-30 | 首钢京唐钢铁联合有限责任公司 | Method for reducing temperature drop of head of intermediate billet |
| CN110153206A (en) * | 2019-05-28 | 2019-08-23 | 北京首钢股份有限公司 | A kind of control method and device of essence de-scaling pinch roller water shutoff |
| CN110355221A (en) * | 2019-06-06 | 2019-10-22 | 山东钢铁股份有限公司 | A kind of hot-rolled strip production line essence de-scaling pinch roller adjustment system and method |
| CN110871218A (en) * | 2019-11-28 | 2020-03-10 | 宝钢特钢韶关有限公司 | Intermediate billet descaling system, descaling process and steel rolling system |
| CN111420987A (en) * | 2020-03-24 | 2020-07-17 | 凌源钢铁股份有限公司 | Medium-width strip long-distance continuous rolling method and rolling line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558897A (en) * | 2022-02-28 | 2022-05-31 | 首钢京唐钢铁联合有限责任公司 | Fixed-width machine rhythm control method |
| CN114558897B (en) * | 2022-02-28 | 2024-03-19 | 首钢京唐钢铁联合有限责任公司 | Rhythm control method of width-fixing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113305160B (en) | 2023-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2701586C1 (en) | Device and method of scale removal from workpiece | |
| CN100374218C (en) | Medium-thick plate production process | |
| CN106475424B (en) | A kind of control method of Hot Rolling Strip sideslip | |
| CN104307892B (en) | The method of band head correction in tandem rolling crossing process | |
| CN111014307B (en) | Rolling mill speed control method for continuous rolling of furnace coil and finishing mill set | |
| CN112872044B (en) | Method and device for controlling rolling rhythm | |
| JP2022549653A (en) | Thick and medium plate production line and production method directly connected to an efficient two-stand double cutting line | |
| CN113305160B (en) | Descaling machine pinch roll control method and device and strip steel descaling system | |
| CN104923567A (en) | Method for identifying and monitoring slippage of engagement of strip head into frame during finish rolling of hot rolled strip | |
| CN104801550B (en) | Method for controlling finish rolling steel throwing speed of hot continuous rolling mill | |
| CN110355221B (en) | Hot-rolled strip steel production line fine descaling pinch roll adjusting system and method | |
| CN106914495A (en) | A kind of hot-strip camber control method and system | |
| CN202006222U (en) | Online control device for linear secondary pressing-in of oxide scales | |
| CN111715702B (en) | Strip steel warping and flattening method in rough rolling process | |
| CN111195655A (en) | Control method for high-carbon steel head impact marks | |
| CN113600770B (en) | System and method for reducing waste amount of steel billets during continuous casting and replacing of water outlet | |
| KR101585800B1 (en) | Apparatus for controlling table speed of transfer table | |
| CN109092907B (en) | Intelligent 1+4 hot continuous rolling tank body material tail control method | |
| CN115740020B (en) | Method for avoiding rough rolling side bending collision guide rule accident | |
| JP7524884B2 (en) | Method for detecting cracks in high-temperature steel, method for rolling high-temperature steel, and method for generating a model for detecting cracks in high-temperature steel | |
| CN111346928B (en) | Start control method, device and medium for preventing strip steel from being broken under secondary pressing | |
| CN113305154B (en) | Roll shifting control method and device, rolling mill set and storage medium | |
| JP2015024417A (en) | Plate width control method and plate width control device | |
| CN111922093B (en) | Method for controlling scratch of ultra-pure stainless steel at finishing mill inlet | |
| CN111992588B (en) | Method for controlling cold-rise of sleeve of strip steel layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |