CN111876581A - Method and system for controlling strip steel width narrowing of continuous annealing furnace - Google Patents
Method and system for controlling strip steel width narrowing of continuous annealing furnace Download PDFInfo
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- CN111876581A CN111876581A CN202010499183.1A CN202010499183A CN111876581A CN 111876581 A CN111876581 A CN 111876581A CN 202010499183 A CN202010499183 A CN 202010499183A CN 111876581 A CN111876581 A CN 111876581A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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Abstract
The invention discloses a method and a system for controlling the width narrowing of strip steel of a continuous annealing furnace, wherein the method comprises the following steps: the method comprises the steps of utilizing measurement data provided by a radar deviation correcting device of the continuous annealing furnace, obtaining the narrowing amount of the strip steel in each section through calculation, and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel by comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel. The method provided by the invention can accurately measure the narrowing amount of the continuous annealing furnace in the continuous annealing production process and realize the control of the narrowing amount, thereby greatly improving the qualification rate and the yield index of cold-rolled products.
Description
Technical Field
The invention relates to the field of cold rolling continuous annealing furnaces, in particular to a method and a system for controlling the width narrowing of strip steel of a continuous annealing furnace.
Background
The cold-rolled plate is a steel plate with the thickness less than 4mm rolled by a common carbon structural steel hot-rolled steel strip through an acid rolling combination unit. And then degreasing by an annealing unit and annealing to eliminate work hardening generated during cold deformation so as to recover the plasticity of the material and reduce the deformation resistance of the metal. Because the cold plate is rolled at normal temperature and is subjected to heat treatment in a protective atmosphere, the cold plate has clean surface and excellent processing, is widely applied to the manufacture of automobiles, household electrical appliances and industrial equipment, and is also used as various building materials. The required dimension precision of the cold-rolled product is higher, the required width is less than or equal to 1200mm and the high precision requirement is 0 to +2mm according to the national standard GB/T708 plus 2006 size, shape, weight and allowable deviation of cold-rolled steel sheets and steel strips; the width is more than 1200mm and less than or equal to 1500mm, and the high precision requirement is 0 to +2 mm; the width is less than 1500mm, the high precision requirement is 0 to +3mm, and the requirement on the width of the product is originally higher than that of a hot rolled coil.
The production line equipment of the existing acid rolling and continuous annealing unit is highly integrated, a cold-rolled finished steel coil can be directly produced after passing through the acid rolling and continuous annealing unit, the width sizing effect of the strip steel is mainly achieved through a disc shear in the production process of the cold-rolled product, the disc shear is usually arranged in the acid rolling unit or the continuous annealing unit, and the edge cutting of the product is completed through one unit. The width precision of the disc shear is 0-1mm, the deviation or camber defect of the strip steel is considered in the actual production, the reserved trimming edge amount is generally controlled to be about 15-20 mm, and the disc shear is easy to clamp the steel when the reserved trimming edge amount is insufficient. The annealing unit mostly adopts vertical totally enclosed continuous annealing stove, exists that belted steel width direction draws narrowly among the annealing process, and the coil of strip of sour rolling side cut leads to the unable standard requirement that reaches of product width precision because of the annealing stove draws narrowly, and the coil of strip of continuous annealing side cut easily leads to the unable side cut of trimming allowance not enough because of the annealing stove draws narrowly. At the present stage, the band steel is manually stopped and manually measured, the narrowing amount of various steel types and specifications in the annealing furnace is accumulated, accurate test and real-time control cannot be realized, and the band steel narrow gauge is easily caused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method and a system for controlling the width narrowing of strip steel of a continuous annealing furnace.
In order to achieve the aim, the invention provides a method for controlling the width narrowing of a strip steel of a continuous annealing furnace, which comprises the following steps: the method comprises the steps of utilizing measurement data provided by a radar deviation correcting device of the continuous annealing furnace, obtaining the narrowing amount of the strip steel in each section through calculation, and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel by comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel.
As an improvement of the above method, the obtaining of the strip steel narrowing amount in each section by calculation using the measurement data provided by the radar deviation rectifying device of the continuous annealing furnace specifically comprises:
respectively extracting the measurement data of the strip steel at the nth radar deviation rectifying position and the measurement data at the n +1 th radar deviation rectifying position of the continuous annealing furnace, and respectively calculating the width of the strip steel at the adjacent two radar deviation rectifying positions by combining furnace chamber parameters; n is an integer greater than 0;
calculating the narrowing amount of the strip steel at the n +1 th radar deviation rectifying position according to the width of the strip steel at the two adjacent radar deviation rectifying positions;
controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of strip steel by comparing the narrowing amount at the n +1 th radar deviation rectifying position with the theoretical narrowing amount of the steel type specification of the strip steel;
and n is increased by 1, and the steps are repeated until the narrow drawing control of the strip steel in each section of the annealing furnace is completed.
As an improvement of the above method, the measurement data at the nth radar rectification position includes: distance long DS between transmission side and strip steel at nth radar deviation correcting positionnAnd the distance long OS between the operating side at the nth radar deviation correcting position and the strip steeln。
As an improvement of the method, the width cpc of the strip steel at the n-th radar deviation rectifying positionnComprises the following steps:
width cpcn＝(an–long DSn–long OSn)/k
wherein, anAnd k is the thermal expansion coefficient of the steel material at the temperature, and is the distance between the transmission side and the operation side at the n-th radar deviation rectifying position.
As an improvement of the method, the narrowing amount width radar cpc at the n +1 th radar rectification position(n+1)Comprises the following steps:
width narrow cpc(n+1)＝width cpcn–width cpc(n+1)
wherein, width cpc(n+1)The width of the strip steel at the n +1 th radar deviation rectifying position.
As an improvement of the above method, the controlling the tension system of the annealing furnace to perform the corresponding narrowing action on the section of strip steel by comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel specifically comprises:
for the narrowing width narrow cpc at the n +1 th radar deviation rectifying position(n+1)Comparing with a first threshold and a second threshold:
when width narrow slow cpc(n+1)When the tension is greater than or equal to the first threshold and less than or equal to the second threshold, controlling the tension to keep unchanged;
when width narrow slow cpc(n+1)When the tension is smaller than the first threshold value, controlling the tension to increase by 5 percent;
when width narrow slow cpc(n+1)And when the tension is larger than the second threshold value, the tension is controlled to be reduced by 5 percent.
The invention also provides a control system for the width narrowing of the strip steel of the continuous annealing furnace, which comprises the following components: the device comprises an acquisition operation module and a comparison control module; wherein the content of the first and second substances,
the acquisition and operation module is used for acquiring measurement data provided by a radar deviation correcting device of the continuous annealing furnace and obtaining the narrowing amount of the strip steel in each section through calculation;
and the comparison control module is used for comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel.
Compared with the prior art, the invention has the advantages that:
the method provided by the invention can accurately measure the narrowing amount of the continuous annealing furnace in the continuous annealing production process and realize the control of the narrowing amount, thereby greatly improving the qualification rate and the yield index of cold-rolled products.
Drawings
FIG. 1 is a schematic flow chart of a method for controlling the amount of the strip width reduction in a continuous annealing furnace according to an embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the operation of the strip steel in the furnace according to example 1 of the present invention;
FIG. 3 is a schematic diagram of a process of detecting and collecting data of the position of the radar deviation-correcting strip steel in the embodiment 1 of the present invention.
Detailed Description
The continuous annealing furnace is divided into a preheating section, a heating section, a soaking section, a slow cooling section, a fast cooling section, an aging section and a final cooling section, and a certain tension value is set for each section of stable operation of the strip steel. Because the strip steel in the heating section, the soaking section and the slow cooling section has higher temperature, the strip steel is narrowed mainly in the three sections under the combined action of high temperature and tension. Each section of the annealing furnace is provided with a correction device (CPC), the correction device transmits signals through an electromagnetic wave transmitter, and after reaching the steel plate, simulation analysis is carried out through receiving reflected signals to obtain the offset position of the strip steel. The continuous annealing furnaces are all provided with a tension control system and a deviation rectifying device. The tension system makes the strip steel generate tension, so that the strip steel is fully contacted with the surface of the roller, and the roller rotates to drive the strip steel to move forward, so that the strip steel runs in the furnace; the deviation correcting device ensures that the strip steel in the furnace runs in the middle of the roller. The technical scheme adopted for solving the technical problem is as follows: the deviation correcting device and the tension control system arranged on the existing annealing furnace are fully utilized, the narrowing amount of the strip steel at each section is accurately measured through corresponding program development on the basis of the existing equipment, and the tension system is utilized to control the tension change to obtain the required narrowing amount on the basis.
The invention utilizes the mode of testing the position of the strip steel by radar deviation correction of the annealing furnace of the continuous unit, extracts the data of the radar deviation correction test signal and combines the simulation of furnace parameters to calculate the accurate width of the strip steel when the strip steel passes through the deviation correction position.
And the widths of different length positions of the steel coil at each deviation rectifying test position are effectively calculated by combining the weld joint tracking function of the continuous annealing unit.
The actual narrowing amount of the strip steel in each section of the annealing furnace can be determined by calculating the difference of the strip steel widths at different radar deviation rectifying positions in the annealing furnace.
A tension control model of the narrowing amount is established, and a tension setting mode of an annealing furnace operator is provided by comparing the actual narrowing amount with the theoretical narrowing amount.
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, embodiment 1 of the present invention proposes a method for controlling the amount of the strip width reduction in a continuous annealing furnace.
The specific steps are described in conjunction with fig. 1.
Step 1), a production line process programmable controller (PLC) and a radar centering digital electric controller (icon) communicate through profibus DP, and position data of the strip steel deviated from the central line of the production line and measured by a radar sensor is collected.
And step 2), the production line process Programmable Logic Controller (PLC) completes the calculation of the actual width of the strip steel according to the formula 1 according to the collected data of the radar deviation correcting system. FIG. 2 is a schematic diagram showing the operation of the strip steel in the furnace.
width cpcn＝(an–long DSn–long OSn)/k (1)
an: distance between radars on both sides (i.e., transmission side and operational side) of nth CPC position; n is an integer greater than 0;
long DSn: the distance between the nth CPC position transmission side radar and the strip steel; 00163
long OSn: the distance between the radar at the operation side of the nth CPC position and the strip steel;
k: the thermal expansion coefficient of the steel material at the temperature;
width cpcn: width of strip steel at nth CPC position.
The production line process programmable controller (PLC) calculates the width of the 1 st to the nth strip steel according to the formula 1n，
And 3) a production line process programmable controller (PLC) completes calculation of the strip steel narrowing amount according to the formula 2, and displays corresponding information on the width of a human-computer interface and the narrowing. Meanwhile, corresponding points are recorded at intervals of 10m in the system.
width narrow cpc(n+1)＝width cpcn–width cpc(n+1)(2)
Wherein, the width narrow slow cpc(n+1): the narrowing amount of the strip steel at the n +1 th CPC position,
width cpc(n+1)the width of the strip at the n +1 th CPC position,
width cpcn: the width of the strip at the nth CPC position.
Step 4), a Programmable Logic Controller (PLC) of the production line processes the narrow width of the strip steel at the nth CPC positionnAnd the specification of the steel type of the strip steel, and comparing by looking up a table (see table 1). When the strip steel is narrowed>When the value is equal to A and less than equal to B, controlling the tension to be constant; when the strip steel is narrowed to be less than A, the first-stage control tension is increased by 5 percent and is confirmed manually; narrowing of strip steel>And B, controlling the primary control tension to be reduced by 5 percent. It should be noted that, in Table 1, only the DC01 steel is used, the strip width is 1000-. In practical application, when the steel types and the specifications of the strip steel are different, the A, B value has certain difference. A. The B value can be obtained by counting the band steel narrowing amount of the steel grade and the specification when the production working conditions (speed and tension) are relatively stable, and the A, B values of the annealing furnaces of the same brand and specification are basically the same.
TABLE 1 strip draw down
| Steel grade | Strip width/mm | Thickness/mm of strip steel | A/mm | B/mm |
| DC01 | 1000-1300 | 1-1.5 | 2 | 2.5 |
The specific process of collecting the position data of the strip steel deviated from the center line of the production line measured by the radar sensor in the step 1) is shown in FIG. 3:
the method comprises the steps that a radar sensor for detecting the edge of the strip steel transmits data to a radar data processing interface board (RPU) through an optical fiber, the data are sent to a radar data server (DPU) after the data are processed by the RPU, the DPU is transmitted to a digital electronic control unit (icon) through can open communication, and the digital electronic control unit (icon) and a production line process programmable controller (PLC) are communicated through profibus DP to carry out data transmission.
Example 2
The embodiment 2 of the invention provides a strip steel width narrowing measurement and control system of a continuous annealing furnace, which comprises: the device comprises a collection operation module and a comparison control module.
The acquisition and operation module is used for acquiring measurement data provided by a radar deviation correcting device of the continuous annealing furnace and obtaining the narrowing amount of the strip steel in each section through calculation;
and the comparison control module is used for comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A method for controlling the width narrowing of a strip steel of a continuous annealing furnace comprises the following steps: the method comprises the steps of utilizing measurement data provided by a radar deviation correcting device of the continuous annealing furnace, obtaining the narrowing amount of the strip steel in each section through calculation, and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel by comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel.
2. The method for controlling the amount of the strip steel width narrowing in the continuous annealing furnace according to claim 1, wherein the method for obtaining the amount of the strip steel width narrowing in each section by calculation using the measurement data provided by the radar deviation correction device of the continuous annealing furnace specifically comprises:
respectively extracting the measurement data of the strip steel at the nth radar deviation rectifying position and the measurement data at the n +1 th radar deviation rectifying position of the continuous annealing furnace, and respectively calculating the width of the strip steel at the adjacent two radar deviation rectifying positions by combining furnace chamber parameters; n is an integer greater than 0;
calculating the narrowing amount of the strip steel at the n +1 th radar deviation rectifying position according to the width of the strip steel at the two adjacent radar deviation rectifying positions;
controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of strip steel by comparing the narrowing amount at the n +1 th radar deviation rectifying position with the theoretical narrowing amount of the steel type specification of the strip steel;
and n is increased by 1, and the steps are repeated until the narrow drawing control of the strip steel in each section of the annealing furnace is completed.
3. The method for controlling the amount of the strip steel width narrowing in the continuous annealing furnace according to claim 2, wherein the measurement data at the nth radar deviation correcting position includes: distance longDS between transmission side and strip steel at nth radar deviation correcting positionnAnd the distance long OS between the operating side at the nth radar deviation correcting position and the strip steeln。
4. The method for controlling the strip width narrowing of the continuous annealing furnace according to claim 3, wherein the strip width cpc at the n-th radar correction position is set to be smaller than the width of the strip at the n-th radar correction positionnComprises the following steps:
width cpcn＝(an–long DSn–long OSn)/k
wherein, anAnd k is the thermal expansion coefficient of the steel material at the temperature, and is the distance between the transmission side and the operation side at the n-th radar deviation rectifying position.
5. The method for controlling the amount of narrow width of strip steel in continuous annealing furnace according to claim 4, wherein the narrow width narrow cpc at the n +1 th radar correction position(n+1)Comprises the following steps:
width narrow cpc(n+1)＝width cpcn–width cpc(n+1)
wherein, width cpc(n+1)The width of the strip steel at the n +1 th radar deviation rectifying position.
6. The method for controlling the amount of the strip steel width narrowing in the continuous annealing furnace according to claim 5, wherein the method for controlling the tension system of the annealing furnace to correspondingly narrow the section of the strip steel by comparing the amount of the narrowing with the theoretical amount of the narrowing in the steel type and specification of the strip steel specifically comprises the following steps:
for the narrowing width narrow cpc at the n +1 th radar deviation rectifying position(n+1)Comparing with a first threshold and a second threshold:
when width narrow slow cpc(n+1)When the tension is greater than or equal to the first threshold and less than or equal to the second threshold, controlling the tension to keep unchanged;
when width narrow slow cpc(n+1)When the tension is smaller than the first threshold value, controlling the tension to increase by 5 percent;
when width narrow slow cpc(n+1)And when the tension is larger than the second threshold value, the tension is controlled to be reduced by 5 percent.
7. A continuous annealing furnace strip width narrowing control system, the system comprising: the device comprises an acquisition operation module and a comparison control module; wherein the content of the first and second substances,
the acquisition and operation module is used for acquiring measurement data provided by a radar deviation correcting device of the continuous annealing furnace and obtaining the narrowing amount of the strip steel in each section through calculation;
and the comparison control module is used for comparing the narrowing amount with the theoretical narrowing amount of the steel type specification of the strip steel and controlling a tension system of the annealing furnace to perform corresponding narrowing action on the section of the strip steel.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104631A (en) * | 1980-12-22 | 1982-06-29 | Sumitomo Metal Ind Ltd | Method for controlling plate width in continuous heating furnace for steel strip |
| JPH0417624A (en) * | 1990-05-10 | 1992-01-22 | Nkk Corp | Method for controlling automatic sheet width necking |
| CN101912874A (en) * | 2010-07-14 | 2010-12-15 | 宁波钢铁有限公司 | Production method of preventing from coiling and pulling narrow of hot-rolled low carbon strip steels used for cold-rolled base plates |
| CN103286141A (en) * | 2012-02-27 | 2013-09-11 | 宝山钢铁股份有限公司 | Automatic control method of width of hot continuous rolling and finish rolling strip steel |
| CN103464470A (en) * | 2013-09-13 | 2013-12-25 | 北京金自天正智能控制股份有限公司 | Hot continuous rolling necking compensation control method |
| CN106011450A (en) * | 2016-07-06 | 2016-10-12 | 燕山大学 | Tension optimization method with continuous annealing process taking stable travelling and quality control as targets |
| CN108827206A (en) * | 2018-04-26 | 2018-11-16 | 本钢板材股份有限公司 | A kind of continuous annealing unit raw material width value error correcting method and system |
| CN109536697A (en) * | 2018-12-21 | 2019-03-29 | 首钢京唐钢铁联合有限责任公司 | Deviation rectifying control method and device for annealing furnace |
-
2020
- 2020-06-04 CN CN202010499183.1A patent/CN111876581B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104631A (en) * | 1980-12-22 | 1982-06-29 | Sumitomo Metal Ind Ltd | Method for controlling plate width in continuous heating furnace for steel strip |
| JPH0417624A (en) * | 1990-05-10 | 1992-01-22 | Nkk Corp | Method for controlling automatic sheet width necking |
| CN101912874A (en) * | 2010-07-14 | 2010-12-15 | 宁波钢铁有限公司 | Production method of preventing from coiling and pulling narrow of hot-rolled low carbon strip steels used for cold-rolled base plates |
| CN103286141A (en) * | 2012-02-27 | 2013-09-11 | 宝山钢铁股份有限公司 | Automatic control method of width of hot continuous rolling and finish rolling strip steel |
| CN103464470A (en) * | 2013-09-13 | 2013-12-25 | 北京金自天正智能控制股份有限公司 | Hot continuous rolling necking compensation control method |
| CN106011450A (en) * | 2016-07-06 | 2016-10-12 | 燕山大学 | Tension optimization method with continuous annealing process taking stable travelling and quality control as targets |
| CN108827206A (en) * | 2018-04-26 | 2018-11-16 | 本钢板材股份有限公司 | A kind of continuous annealing unit raw material width value error correcting method and system |
| CN109536697A (en) * | 2018-12-21 | 2019-03-29 | 首钢京唐钢铁联合有限责任公司 | Deviation rectifying control method and device for annealing furnace |
Non-Patent Citations (1)
| Title |
|---|
| 白振华等: ""连续退火机组张力优化设定技术研究"", 《燕山大学学报》 * |
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