CN109536697B - Deviation rectifying control method and device for annealing furnace - Google Patents
Deviation rectifying control method and device for annealing furnace Download PDFInfo
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- CN109536697B CN109536697B CN201811574659.2A CN201811574659A CN109536697B CN 109536697 B CN109536697 B CN 109536697B CN 201811574659 A CN201811574659 A CN 201811574659A CN 109536697 B CN109536697 B CN 109536697B
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- C21—METALLURGY OF IRON
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- 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
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Abstract
The invention discloses a deviation rectifying control method and a deviation rectifying control device for an annealing furnace, wherein the method comprises the following steps: obtaining the width range of the strip steel; equally dividing the width range of the strip steel into M width intervals; calculating the allowable deviation amount corresponding to each of the M width sections; obtaining the current width of the strip steel in the furnace and a width interval corresponding to the current width; obtaining the allowed deviation offset of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount is smaller than the allowable deviation amount and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed; and if the actual deviation amount is larger than the allowable deviation amount, triggering a production line to stop. The deviation tolerance of the narrow strip steel is increased by setting the corresponding allowable deviation for the strip steels with different specifications, the problem that the narrow strip steel triggers parking due to slight deviation is effectively solved, and the technical effect of scraping and rubbing the furnace wall after the wide strip steel deviates is avoided.
Description
Technical Field
The application relates to the technical field of cold rolling, in particular to a deviation rectifying control method and device for an annealing furnace.
Background
The cold rolling annealing furnace is a key device on a continuous annealing line and a galvanizing line, and the operation condition of the whole production line is directly influenced by whether the annealing furnace can stably operate or not. The deviation rectifying system in the furnace is one of the most important devices of the annealing furnace, and is used for detecting the deviation of the strip steel in the furnace, rectifying the strip steel through the deviation rectifying roller, enabling the strip steel to always run in the center of the roller, and preventing the strip steel from being broken in the furnace due to the fact that the strip steel is excessively deviated and scratches a furnace wall.
However, in the process of implementing the technical solution in the embodiment of the present application, the inventor of the present application finds that the above prior art has at least the following technical problems:
in the prior art, the strip steel specification is not distinguished, and the strip steel in the furnace is corrected by adopting a unified deviation judgment standard, so that the narrow strip steel which is easy to deviate triggers to stop due to frequent deviation, and the stable operation of a production line is seriously influenced.
Content of application
The embodiment of the application provides a deviation rectifying control method and device for an annealing furnace, and aims to solve the technical problem that in the prior art, the deviation of strip steel in the furnace is rectified by adopting a uniform deviation judging standard without distinguishing the specification of the strip steel, so that the narrow strip steel which is easy to deviate triggers the stop due to frequent deviation, and the stable operation of a production line is seriously influenced. The corresponding allowable deviation amount is set for the strip steels with different specifications, so that the tolerance of the deviation amount of the narrow strip steel is increased, measures are taken in time to relieve the deviation of the strip steel, the problem that the narrow strip steel triggers parking due to slight deviation is effectively solved, furnace walls are prevented from being scratched after the wide strip steel deviates, and the technical effect of stable operation of a production line is ensured.
In order to solve the above problem, in a first aspect, an embodiment of the present application provides an annealing furnace deviation rectification control method, including: obtaining the width range of the strip steel; dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer; calculating the allowable deviation amount corresponding to each of the M width sections; obtaining the current width of the strip steel in the furnace; obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals; obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension; and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop.
Preferably, the width range of the obtained strip steel comprises: obtaining width information of the narrowest strip steel which can be produced by the annealing furnace; obtaining the width information of the widest strip steel which can be produced by the annealing furnace; and obtaining the width range of the strip steel according to the width information of the narrowest strip steel and the width information of the widest strip steel.
Preferably, the dividing the equal intervals of the width range of the strip steel into M width intervals, where M is a positive integer, includes: setting the width information of the narrowest strip steel as the lower limit of a first width interval; setting the width information of the widest strip steel as the upper limit of the Mth width interval; and dividing the equal intervals of the width range of the strip steel into M width intervals by taking 100-200mm as a step length, wherein the value range of M is 5-10.
Preferably, the calculating the allowable deviation amount corresponding to each of the M width sections includes: obtaining length information of a roller in the furnace; obtaining upper limit width information of each of the M width intervals; and calculating the allowable deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections.
Preferably, the calculating the allowable deviation amount corresponding to each of the M width sections further includes: the upper limit of the allowable deviation amount corresponding to each of the M width sections is set to be 300 mm.
Preferably, if the actual amount of deviation of current belted steel is less than the amount of deviation of allowing of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, include: reducing the current furnace zone speed according to a preset speed, wherein the current furnace zone speed is used for representing the running speed of the current strip steel, and the preset speed range is 5-10 m/min; detecting the deviation correcting amount of the deviation correcting frame after speed reduction; judging whether the deviation correcting amount of the deviation correcting frame after speed reduction is smaller than the first threshold value or not; if the deviation correcting amount of the correcting frame after speed reduction is smaller than the first threshold value, stopping speed reduction of the production line; and if the deviation correcting amount of the corrected frame after the speed reduction is not less than the first threshold value, continuing to reduce the speed of the current furnace zone according to the preset speed until the deviation correcting amount of the corrected frame after the speed reduction is less than the first threshold value.
Preferably, if the actual amount of deviation of current belted steel is less than the amount of deviation of allowing of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, still include: increasing the tension of the current furnace zone according to a preset tension, wherein the preset tension range is 5-10 Mpa/m2(ii) a Detecting the deviation correcting amount of the correcting frame after the tension is increased; judging whether the correction amount of the correction frame with the increased tension is smaller than the first threshold value or not; if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value, stopping increasing the tension of the production line; if the correction amount of the correction frame with the increased tension is not less than the first threshold, judging whether the tension fluctuation value is less than a second threshold; and if the tension fluctuation value is smaller than the second threshold value, continuing to increase the tension of the current furnace zone according to the preset tension until the deviation rectifying amount of the rectifying frame after the tension is increased is smaller than the first threshold value.
In a second aspect, an embodiment of the present application further provides an annealing furnace deviation rectification control device, where the device includes:
the first obtaining unit is used for obtaining the width range of the strip steel;
the first dividing unit is used for dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
a first calculating unit, configured to calculate allowable deviation amounts corresponding to the M width sections, respectively;
the second obtaining unit is used for obtaining the current width of the strip steel in the furnace;
a third obtaining unit, configured to obtain, based on the M width intervals, a width interval corresponding to the current strip steel width;
the fourth obtaining unit is used for obtaining the allowed deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
the fifth obtaining unit is used for obtaining the actual deviation amount of the current strip steel and the deviation rectifying amount of the deviation rectifying frame;
the first triggering unit is used for triggering the production line to reduce the speed and increase the tension if the actual deviation amount of the current strip steel is smaller than the allowable deviation offset amount of the current strip steel and the deviation correcting amount of the deviation correcting frame is larger than a first threshold;
and the second trigger unit is used for triggering the production line to stop if the actual deviation of the current strip steel is greater than the allowable deviation offset of the current strip steel.
Preferably, the first obtaining unit includes:
a sixth obtaining unit for obtaining width information of the narrowest strip that the annealing furnace can produce;
a seventh obtaining unit for obtaining width information of the widest strip that the annealing furnace can produce;
an eighth obtaining unit, configured to obtain a width range of the strip steel according to the width information of the narrowest strip steel and the width information of the widest strip steel.
Preferably, the first division unit includes:
a first setting unit configured to set width information of the narrowest band as a lower limit of a first width section;
a second setting unit configured to set width information of the widest strip as an upper limit of an mth width section;
and the second dividing unit is used for dividing the equal intervals of the width range of the strip steel into M width intervals by taking 100-200mm as a step length, wherein the value range of M is 5-10.
Preferably, the first calculation unit includes:
a ninth obtaining unit for obtaining length information of the roller inside the furnace;
a tenth obtaining unit configured to obtain upper limit width information of each of the M width sections;
and the second calculating unit is used for calculating the allowed deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections.
Preferably, the first calculation unit further includes: the upper limit of the allowable deviation amount corresponding to each of the M width sections is set to be 300 mm.
Preferably, the first trigger unit includes:
the first speed reduction unit is used for reducing the speed of a current furnace area according to a preset speed, wherein the speed of the current furnace area is used for representing the running speed of current strip steel, and the preset speed range is 5-10 m/min;
the first detection unit is used for detecting the deviation correction amount of the deviation correction frame after the speed is reduced;
the first judging unit is used for judging whether the deviation rectifying amount of the speed-reduced deviation rectifying frame is smaller than the first threshold value or not;
the first stopping unit is used for stopping the speed reduction of the production line if the deviation correcting amount of the corrected frame after the speed reduction is smaller than the first threshold value;
and the second speed reduction unit is used for continuing to reduce the speed of the current furnace zone according to the preset speed if the deviation correcting amount of the corrected frame after speed reduction is not less than the first threshold value until the deviation correcting amount of the corrected frame after speed reduction is less than the first threshold value.
Preferably, the first trigger unit further includes:
the first increasing unit is used for increasing the tension of the current furnace zone according to preset tension, wherein the preset tension range is 5-10 Mpa/m2；
The second detection unit is used for detecting the correction amount of the correction frame after the tension is increased;
the second judging unit is used for judging whether the deviation rectifying amount of the correcting frame with the increased tension is smaller than the first threshold value or not;
the second stopping unit is used for stopping increasing the tension of the production line if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value;
the third judging unit is used for judging whether the tension fluctuation value is smaller than a second threshold value or not if the correction amount of the correction frame with the increased tension is not smaller than the first threshold value;
and the second increasing unit is used for continuously increasing the tension of the current furnace zone according to the preset tension if the tension fluctuation value is smaller than the second threshold until the deviation rectifying amount of the deviation rectifying frame after the tension is increased is smaller than the first threshold.
In a third aspect, an embodiment of the present application further provides an annealing furnace deviation rectifying control device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the processor implements the following steps:
obtaining the width range of the strip steel;
dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
calculating the allowable deviation amount corresponding to each of the M width sections;
obtaining the current width of the strip steel in the furnace;
obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and the program, when executed by a processor, implements the following steps:
obtaining the width range of the strip steel;
dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
calculating the allowable deviation amount corresponding to each of the M width sections;
obtaining the current width of the strip steel in the furnace;
obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
the embodiment of the application provides a deviation rectifying control method and device for an annealing furnace, and the method comprises the following steps: obtaining the width range of the strip steel; dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer; calculating the allowable deviation amount corresponding to each of the M width intervals; obtaining the current width of the strip steel in the furnace; obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals; obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension; and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop. The deviation correction method is used for solving the technical problem that the stable operation of a production line is seriously influenced because narrow strip steel which is easy to deviate triggers the stop due to frequent deviation because the strip steel in a furnace is corrected by adopting a unified deviation judgment standard without distinguishing the specifications of the strip steel in the prior art. The corresponding allowable deviation amount is set for the strip steels with different specifications, so that the tolerance of the deviation amount of the narrow strip steel is increased, measures are taken in time to relieve the deviation of the strip steel, the problem that the narrow strip steel triggers parking due to slight deviation is effectively solved, furnace walls are prevented from being scratched after the wide strip steel deviates, and the technical effect of stable operation of a production line is ensured.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
FIG. 1 is a schematic flow chart of a deviation rectifying control method for an annealing furnace according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a deviation rectifying control device for an annealing furnace according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another deviation rectifying control device for an annealing furnace according to an embodiment of the present invention.
Description of reference numerals: a first obtaining unit 11, a first dividing unit 12, a first calculating unit 13, a second obtaining unit 14, a third obtaining unit 15, a fourth obtaining unit 16, a fifth obtaining unit 17, a first triggering unit 18, a second triggering unit 19, a bus 300, a receiver 301, a processor 302, a transmitter 303, a memory 304, and a bus interface 306.
Detailed Description
The embodiment of the application provides a deviation rectifying control method and device for an annealing furnace, and aims to solve the technical problem that in the prior art, the stable operation of a production line is seriously influenced because narrow strip steel which is easy to deviate triggers to stop due to frequent deviation because the strip steel in the furnace is rectified by adopting a uniform deviation judging standard without distinguishing the specifications of the strip steel.
In order to solve the technical problems, the technical scheme provided by the application has the following general idea: obtaining the width range of the strip steel; dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer; calculating the allowable deviation amount corresponding to each of the M width sections; obtaining the current width of the strip steel in the furnace; obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals; obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension; and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop. The corresponding allowable deviation amount is set for the strip steels with different specifications, so that the tolerance of the deviation amount of the narrow strip steel is increased, measures are taken in time to relieve the deviation of the strip steel, the problem that the narrow strip steel triggers parking due to slight deviation is effectively solved, furnace walls are prevented from being scratched after the wide strip steel deviates, and the technical effect of stable operation of a production line is ensured.
The technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
Example one
Fig. 1 is a schematic flow chart of a deviation rectifying control method for an annealing furnace in an embodiment of the invention, as shown in fig. 1, the method includes:
step 110: obtaining the width range of the strip steel;
step 120: dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
step 130: calculating the allowable deviation amount corresponding to each of the M width sections;
step 140: obtaining the current width of the strip steel in the furnace;
step 150: obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
step 160: obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
step 170: obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
step 180: if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
step 190: and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop.
Specifically, the technical effect of increasing the deviation tolerance of the narrow-specification strip steel is achieved by obtaining the width range of the strip steel which can be produced in the annealing furnace, dividing the width range of the strip steel into M width sections, namely, the width of each width section is equal, calculating the deviation allowable offset corresponding to each of the M width sections, namely, each width section corresponds to one deviation allowable offset, and setting the corresponding deviation allowable offset for the strip steels with different specifications. Then obtaining the width of the current running strip steel in the furnace, comparing and matching the current strip steel width with the M width intervals, judging which width interval of the M width intervals the current strip steel width is in, determining the allowable deviation offset of the current strip steel from the one-to-one correspondence of the M width intervals and the allowable deviation offsets corresponding to the M width intervals, and obtaining the actual deviation amount of the current strip steel in the furnace and the deviation correction amount of a deviation correcting frame, wherein the deviation correcting frame is used for correcting the current strip steel in real time, comparing the actual deviation amount of the current strip steel with the allowable deviation offset of the current strip steel, if the actual deviation amount of the current strip steel is less than the allowable deviation offset of the current strip steel, but the deviation amount of the deviation correcting frame is greater than a first threshold value, wherein, the first threshold value is 80% of the maximum deviation rectifying amount of the deviation rectifying frame, and even if the deviation rectifying amount of the deviation rectifying frame reaches the maximum value, the production line deceleration or parking cannot be triggered, but in order to prevent the situation that the deviation rectifying amount of the deviation rectifying frame is too large to cause the strip steel to be cut and rubbed against the furnace wall, when the deviation rectifying amount of the deviation rectifying frame is larger than the first threshold value, necessary measures such as triggering the production line deceleration or increasing the tension are taken in time to relieve the continuous deviation of the current strip steel, the current strip steel which deviates is finally rectified, and the problem that the narrow-specification strip steel is triggered to park due to slight deviation is effectively solved.
If when the deviation rectifying amount of the deviation rectifying frame reaches the maximum value, namely the deviation rectifying capacity of the deviation rectifying frame reaches the maximum limit, and the deviation rectifying capacity is not provided, the actual deviation amount of the current strip steel is still increased until the deviation rectifying capacity is larger than the allowable deviation offset amount of the current strip steel, the furnace area is triggered to stop, the technical effect of preventing the wide-specification strip steel from being deviated and rubbing a furnace wall after the wide-specification strip steel is deviated is achieved, and the stable operation of a production line is ensured.
In step 110, to obtain the width range of the strip, first, the width information of the narrowest strip that can be produced by the annealing furnace is obtained, the width information of the widest strip that can be produced by the annealing furnace is obtained, and then the width information of the narrowest strip is set as the lower limit of the width range of the strip, and the width information of the widest strip is set as the upper limit of the width range of the strip, and the width range of the strip is further obtained.
In step 120, the equal intervals of the width range of the strip steel are divided into M width intervals, where M is a positive integer, and the method specifically includes: setting the width information of the narrowest strip steel as the lower limit of a first width interval; setting the width information of the widest strip steel as the upper limit of the Mth width interval; dividing the equal intervals of the width range of the strip steel into M width intervals by taking 100-200mm as a step length, wherein M is a positive integer; the value range of M is 5-10. For example, if the width of the roller in the annealing furnace is 1700mm, the annealing furnace can produce strip steel with the width ranging from 750mm to 1580mm, and 150mm is taken as a width interval, the strip steel can be divided into six width intervals of 750mm to 900mm, 900mm to 1050mm, 1050mm to 1200mm, 1200mm to 1350mm, 1350mm to 1500mm and 1500mm to 1580 mm. Under the condition that the strip steel is not deviated, the distance between the widest strip steel edge part (1580mm) and the roller edge part is 60mm, the strip steel positioned in the 1550 + 1580mm width interval cannot scratch a furnace wall under the condition that the actual deviation is not more than 60mm, and the allowable deviation of the width interval can be set to be 60 mm.
In step 130, the calculating of the allowable deviation amount corresponding to each of the M width sections specifically includes: obtaining length information of a roller in the furnace; obtaining upper limit width information of each of the M width intervals; calculating the allowed deviation offset corresponding to the M width sections according to the length information of the roller in the furnace and the upper limit width information of the M width sections, wherein the allowed deviation offset of each width section is calculated by subtracting the upper limit width information value of the width section from the length information of the roller in the furnace and dividing the value by 2 to obtain the allowed deviation offset of the width section; the upper limit of the allowable deviation amount of each of the M width sections is set to be 300 mm. For example, in the six width sections set in step 120, the allowable deviation amount for the width section of 1350mm to 1500mm may be set to 100mm, the allowable deviation amount for the width section of 1200mm to 1350mm may be set to 175mm, the allowable deviation amount for the width section of 1050mm to 1200mm may be set to 250mm, and the allowable deviation amount for the width section of 750mm to 900mm may be set to 400 mm. In order to ensure that the narrow-specification strip steel is not scratched to a furnace wall, the allowable deviation offset of the narrow-specification strip steel in the width range can be properly reduced, the upper limit of the allowable deviation offset is set to be generally not higher than 300mm, and therefore the allowable deviation amount in the range from 750mm to 900mm can be set to be 300 mm. The technical effect of increasing the deviation tolerance of the narrow-specification strip steel is further achieved by setting the corresponding allowable deviation amount for the strip steels with different specifications.
In step 180, if the actual deviation amount of the current strip steel is smaller than the allowable deviation offset amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, the production line is triggered to reduce the speed, and the tension is increased, including: reducing the current furnace zone speed according to a preset speed, wherein the current furnace zone speed is used for representing the running speed of the current strip steel, and the preset speed range is 5-10 m/min; detecting the deviation correcting amount of the deviation correcting frame after speed reduction; judging whether the deviation correcting amount of the deviation correcting frame after speed reduction is smaller than the first threshold value or not; if the deviation correcting amount of the correcting frame after speed reduction is smaller than the first threshold value, stopping speed reduction of the production line; and if the deviation correcting amount of the corrected frame after the speed reduction is not less than the first threshold value, continuing to reduce the speed of the current furnace zone according to the preset speed until the deviation correcting amount of the corrected frame after the speed reduction is less than the first threshold value.
In step 180, if the actual deviation amount of the current strip steel is smaller than the allowable deviation offset amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, the production line is triggered to reduce the speed, and the tension is increased, and the method further comprises the following steps: increasing the tension of the current furnace zone according to a preset tension, wherein the preset tension range is 5-10 Mpa/m2(ii) a Detecting the deviation correcting amount of the correcting frame after the tension is increased; judging whether the correction amount of the correction frame with the increased tension is smaller than the first threshold value or not; if it is saidAfter the tension is increased, the deviation correcting amount of the correcting frame is smaller than the first threshold value, and the tension increase of the production line is stopped; if the correction amount of the correction frame with the increased tension is not less than the first threshold, judging whether the tension fluctuation value is less than a second threshold, wherein the second threshold is 0.5 KN; if the tension fluctuation value is smaller than the second threshold value, the tension of the current furnace zone is continuously increased according to the preset tension, that is, the furnace zone tension is continuously adjusted after the tension is stabilized (the tension fluctuation value is less than or equal to 0.5KN) before the tension is adjusted each time until the deviation rectifying amount of the deviation rectifying frame after the tension is increased is smaller than the first threshold value.
Example two
Based on the same inventive concept as the deviation rectifying control method of the annealing furnace in the previous embodiment, the invention also provides a deviation rectifying control device of the annealing furnace, as shown in fig. 2, the device comprises:
the first obtaining unit 11 is used for obtaining the width range of the strip steel by the first obtaining unit 11;
the first dividing unit 12 is configured to divide the equal intervals of the width range of the strip steel into M width intervals, where M is a positive integer;
a first calculating unit 13, where the first calculating unit 13 is configured to calculate an allowable deviation amount corresponding to each of the M width sections;
a second obtaining unit 14, wherein the second obtaining unit 14 is used for obtaining the current strip steel width in the furnace;
a third obtaining unit 15, where the third obtaining unit 15 is configured to obtain a width interval corresponding to the current strip steel width based on the M width intervals;
a fourth obtaining unit 16, where the fourth obtaining unit 16 is configured to obtain an allowed deviation offset of the current strip steel according to a width interval corresponding to the current strip steel width;
a fifth obtaining unit 17, wherein the fifth obtaining unit 17 is configured to obtain an actual deviation amount of the current strip steel and a deviation rectifying amount of the deviation rectifying frame;
the first triggering unit 18 is used for triggering the production line to reduce the speed and increase the tension if the actual deviation amount of the current strip steel is smaller than the allowable deviation offset amount of the current strip steel and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value;
and the second triggering unit 19 is used for triggering the production line to stop if the actual deviation of the current strip steel is greater than the allowable deviation offset of the current strip steel.
Preferably, the first obtaining unit 11 includes:
a sixth obtaining unit for obtaining width information of the narrowest strip that the annealing furnace can produce;
a seventh obtaining unit for obtaining width information of the widest strip that the annealing furnace can produce;
an eighth obtaining unit, configured to obtain a width range of the strip steel according to the width information of the narrowest strip steel and the width information of the widest strip steel.
Preferably, the first dividing unit 12 includes:
a first setting unit configured to set width information of the narrowest band as a lower limit of a first width section;
a second setting unit configured to set width information of the widest strip as an upper limit of an mth width section;
and the second dividing unit is used for dividing the equal intervals of the width range of the strip steel into M width intervals by taking 100-200mm as a step length, wherein M is a positive integer.
Preferably, the first dividing unit 12 further includes: the value range of M is 5-10.
Preferably, the first calculation unit 13 includes:
a ninth obtaining unit for obtaining length information of the roller inside the furnace;
a tenth obtaining unit configured to obtain upper limit width information of each of the M width sections;
and the second calculating unit is used for calculating the allowed deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections.
Preferably, the first calculating unit 13 further includes: the upper limit of the allowable deviation amount corresponding to each of the M width sections is set to be 300 mm.
Preferably, the first trigger unit 18 includes:
the first speed reduction unit is used for reducing the speed of a current furnace area according to a preset speed, wherein the speed of the current furnace area is used for representing the running speed of current strip steel, and the preset speed range is 5-10 m/min;
the first detection unit is used for detecting the deviation correction amount of the deviation correction frame after the speed is reduced;
the first judging unit is used for judging whether the deviation rectifying amount of the speed-reduced deviation rectifying frame is smaller than the first threshold value or not;
the first stopping unit is used for stopping the speed reduction of the production line if the deviation correcting amount of the corrected frame after the speed reduction is smaller than the first threshold value;
and the second speed reduction unit is used for continuing to reduce the speed of the current furnace zone according to the preset speed if the deviation correcting amount of the corrected frame after speed reduction is not less than the first threshold value until the deviation correcting amount of the corrected frame after speed reduction is less than the first threshold value.
Preferably, the first triggering unit 18 further includes:
the first increasing unit is used for increasing the tension of the current furnace zone according to preset tension, wherein the preset tension range is 5 to10Mpa/m2；
The second detection unit is used for detecting the correction amount of the correction frame after the tension is increased;
the second judging unit is used for judging whether the deviation rectifying amount of the correcting frame with the increased tension is smaller than the first threshold value or not;
the second stopping unit is used for stopping increasing the tension of the production line if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value;
the third judging unit is used for judging whether the tension fluctuation value is smaller than a second threshold value or not if the correction amount of the correction frame with the increased tension is not smaller than the first threshold value;
and the second increasing unit is used for continuously increasing the tension of the current furnace zone according to the preset tension if the tension fluctuation value is smaller than the second threshold until the deviation rectifying amount of the deviation rectifying frame after the tension is increased is smaller than the first threshold.
Various changes and specific examples of the deviation rectifying control method for the annealing furnace in the first embodiment of fig. 1 are also applicable to the deviation rectifying control device for the annealing furnace in the present embodiment, and through the foregoing detailed description of the deviation rectifying control method for the annealing furnace, those skilled in the art can clearly know the implementation method of the deviation rectifying control device for the annealing furnace in the present embodiment, so for the brevity of the description, detailed descriptions are omitted here.
EXAMPLE III
Based on the same inventive concept as the deviation rectifying control method of the annealing furnace in the previous embodiment, the invention also provides a deviation rectifying control device of the annealing furnace, which is stored with a computer program, and the computer program realizes the steps of any one of the deviation rectifying control methods of the annealing furnace when being executed by a processor.
Where in fig. 3 a bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 linking together various circuits including one or more processors, represented by processor 302, and memory, represented by memory 304. The bus 300 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 306 provides an interface between the bus 300 and the receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 302 is responsible for managing the bus 300 and general processing, and the memory 304 may be used for storing data used by the processor 302 in performing operations.
Example four
Based on the same inventive concept as the deviation rectifying control method of the annealing furnace in the previous embodiment, the present invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, realizes the following steps:
obtaining the width range of the strip steel; dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer; calculating the allowable deviation amount corresponding to each of the M width sections; obtaining the current width of the strip steel in the furnace; obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals; obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension; and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop.
In a specific implementation, when the program is executed by a processor, any method step in the first embodiment may be further implemented.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
the embodiment of the application provides a deviation rectifying control method and device for an annealing furnace, and the method comprises the following steps: obtaining the width range of the strip steel; dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer; calculating the allowable deviation amount corresponding to each of the M width sections; obtaining the current width of the strip steel in the furnace; obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals; obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel; obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame; if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension; and if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop. The deviation correction method is used for solving the technical problem that the stable operation of a production line is seriously influenced because narrow strip steel which is easy to deviate triggers the stop due to frequent deviation because the strip steel in a furnace is corrected by adopting a unified deviation judgment standard without distinguishing the specifications of the strip steel in the prior art. The corresponding allowable deviation amount is set for the strip steels with different specifications, so that the tolerance of the deviation amount of the narrow strip steel is increased, measures are taken in time to relieve the deviation of the strip steel, the problem that the narrow strip steel triggers parking due to slight deviation is effectively solved, furnace walls are prevented from being scratched after the wide strip steel deviates, and the technical effect of stable operation of a production line is ensured.
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 modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments 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 encompass such modifications and variations.
Claims (7)
1. A deviation rectifying control method for an annealing furnace is characterized by comprising the following steps:
obtaining the width range of the strip steel;
dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
calculating the allowable deviation amount corresponding to each of the M width sections;
obtaining the current width of the strip steel in the furnace;
obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
if the actual deviation amount of the current strip steel is larger than the allowable deviation amount of the current strip steel, triggering a production line to stop;
wherein, the calculating the allowable deviation amount corresponding to each of the M width sections includes:
obtaining length information of a roller in the furnace;
obtaining upper limit width information of each of the M width intervals;
calculating the allowable deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, include:
increasing the tension of the current furnace zone according to a preset tension, wherein the preset tension range is 5-10 MPa/m2；
Detecting the deviation correcting amount of the correcting frame after the tension is increased;
judging whether the correction amount of the correction frame with the increased tension is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value, stopping increasing the tension of the production line;
if the correction amount of the correction frame with the increased tension is not less than the first threshold, judging whether the tension fluctuation value is less than a second threshold;
if the tension fluctuation value is smaller than the second threshold value, continuing to increase the tension of the current furnace zone according to the preset tension until the deviation rectifying amount of the rectifying frame after the tension is increased is smaller than the first threshold value;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, still include:
reducing the current furnace zone speed according to a preset speed, wherein the current furnace zone speed is used for representing the running speed of the current strip steel, and the preset speed range is 5-10 m/min;
detecting the deviation correcting amount of the deviation correcting frame after speed reduction;
judging whether the deviation correcting amount of the deviation correcting frame after speed reduction is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after speed reduction is smaller than the first threshold value, stopping speed reduction of the production line;
and if the deviation correcting amount of the corrected frame after the speed reduction is not less than the first threshold value, continuing to reduce the speed of the current furnace zone according to the preset speed until the deviation correcting amount of the corrected frame after the speed reduction is less than the first threshold value.
2. The method of claim 1, wherein said obtaining a width range of the strip comprises:
obtaining width information of the narrowest strip steel which can be produced by the annealing furnace;
obtaining the width information of the widest strip steel which can be produced by the annealing furnace;
and obtaining the width range of the strip steel according to the width information of the narrowest strip steel and the width information of the widest strip steel.
3. The method of claim 2, wherein the dividing the equal width range of the strip steel into M width sections, wherein M is a positive integer, comprises:
setting the width information of the narrowest strip steel as the lower limit of a first width interval;
setting the width information of the widest strip steel as the upper limit of the Mth width interval;
and dividing the equal intervals of the width range of the strip steel into M width intervals by taking 100-200mm as a step length, wherein the value range of M is 5-10.
4. The method of claim 1, wherein the calculating of the allowed off-tracking offset for each of the M width segments further comprises:
the upper limit of the allowable deviation amount corresponding to each of the M width sections is set to be 300 mm.
5. An annealing furnace deviation rectifying control device is characterized by comprising:
the first obtaining unit is used for obtaining the width range of the strip steel;
the first dividing unit is used for dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
a first calculating unit, configured to calculate allowable deviation amounts corresponding to the M width sections, respectively;
the second obtaining unit is used for obtaining the current width of the strip steel in the furnace;
a third obtaining unit, configured to obtain, based on the M width intervals, a width interval corresponding to the current strip steel width;
the fourth obtaining unit is used for obtaining the allowed deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
the fifth obtaining unit is used for obtaining the actual deviation amount of the current strip steel and the deviation rectifying amount of the deviation rectifying frame;
the first triggering unit is used for triggering the production line to reduce the speed and increase the tension if the actual deviation amount of the current strip steel is smaller than the allowable deviation offset amount of the current strip steel and the deviation correcting amount of the deviation correcting frame is larger than a first threshold;
the second triggering unit is used for triggering the production line to stop if the actual deviation amount of the current strip steel is larger than the allowable deviation offset amount of the current strip steel;
wherein the first calculation unit includes:
a ninth obtaining unit for obtaining length information of the roller inside the furnace;
a tenth obtaining unit configured to obtain upper limit width information of each of the M width sections;
a second calculating unit, configured to calculate, according to length information of the roller in the furnace and upper limit width information of each of the M width sections, an allowable deviation amount corresponding to each of the M width sections;
wherein the first trigger unit includes:
the first increasing unit is used for increasing the tension of the current furnace zone according to preset tension, wherein the preset tension range is 5-10 MPa/m2；
The second detection unit is used for detecting the correction amount of the correction frame after the tension is increased;
the second judging unit is used for judging whether the deviation rectifying amount of the correcting frame with the increased tension is smaller than the first threshold value or not;
the second stopping unit is used for stopping increasing the tension of the production line if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value;
the third judging unit is used for judging whether the tension fluctuation value is smaller than a second threshold value or not if the correction amount of the correction frame with the increased tension is not smaller than the first threshold value;
the second increasing unit is used for continuing increasing the tension of the current furnace zone according to the preset tension if the tension fluctuation value is smaller than the second threshold until the deviation rectifying amount of the rectifying frame after the tension is increased is smaller than the first threshold;
wherein the first trigger unit further comprises:
the first speed reduction unit is used for reducing the speed of a current furnace area according to a preset speed, wherein the speed of the current furnace area is used for representing the running speed of current strip steel, and the preset speed range is 5-10 m/min;
the first detection unit is used for detecting the deviation correction amount of the deviation correction frame after the speed is reduced;
the first judging unit is used for judging whether the deviation rectifying amount of the speed-reduced deviation rectifying frame is smaller than the first threshold value or not;
the first stopping unit is used for stopping the speed reduction of the production line if the deviation correcting amount of the corrected frame after the speed reduction is smaller than the first threshold value;
and the second speed reduction unit is used for continuing to reduce the speed of the current furnace zone according to the preset speed if the deviation correcting amount of the corrected frame after speed reduction is not less than the first threshold value until the deviation correcting amount of the corrected frame after speed reduction is less than the first threshold value.
6. An annealing furnace deviation rectifying control device, comprising a memory, a processor and a computer program stored on the memory and capable of running on the processor, characterized in that the processor executes the program to realize the following steps:
obtaining the width range of the strip steel;
dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
calculating the allowable deviation amount corresponding to each of the M width sections;
obtaining the current width of the strip steel in the furnace;
obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
if the actual deviation amount of the current strip steel is larger than the allowable deviation amount of the current strip steel, triggering a production line to stop;
wherein, the calculating the allowable deviation amount corresponding to each of the M width sections includes:
obtaining length information of a roller in the furnace;
obtaining upper limit width information of each of the M width intervals;
calculating the allowable deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, include:
according to a preset tensionIncreasing the tension of the current furnace zone, wherein the preset tension range is 5-10 MPa/m2；
Detecting the deviation correcting amount of the correcting frame after the tension is increased;
judging whether the correction amount of the correction frame with the increased tension is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value, stopping increasing the tension of the production line;
if the correction amount of the correction frame with the increased tension is not less than the first threshold, judging whether the tension fluctuation value is less than a second threshold;
if the tension fluctuation value is smaller than the second threshold value, continuing to increase the tension of the current furnace zone according to the preset tension until the deviation rectifying amount of the rectifying frame after the tension is increased is smaller than the first threshold value;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, still include:
reducing the current furnace zone speed according to a preset speed, wherein the current furnace zone speed is used for representing the running speed of the current strip steel, and the preset speed range is 5-10 m/min;
detecting the deviation correcting amount of the deviation correcting frame after speed reduction;
judging whether the deviation correcting amount of the deviation correcting frame after speed reduction is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after speed reduction is smaller than the first threshold value, stopping speed reduction of the production line;
and if the deviation correcting amount of the corrected frame after the speed reduction is not less than the first threshold value, continuing to reduce the speed of the current furnace zone according to the preset speed until the deviation correcting amount of the corrected frame after the speed reduction is less than the first threshold value.
7. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:
obtaining the width range of the strip steel;
dividing the equal intervals of the width range of the strip steel into M width intervals, wherein M is a positive integer;
calculating the allowable deviation amount corresponding to each of the M width sections;
obtaining the current width of the strip steel in the furnace;
obtaining a width interval corresponding to the width of the current strip steel based on the M width intervals;
obtaining the allowable deviation offset of the current strip steel according to the width interval corresponding to the width of the current strip steel;
obtaining the actual deviation amount of the current strip steel and the deviation correcting amount of the deviation correcting frame;
if the actual deviation amount of the current strip steel is smaller than the allowable deviation amount of the current strip steel, and the deviation correcting amount of the deviation correcting frame is larger than a first threshold value, triggering a production line to reduce the speed, and increasing the tension;
if the actual deviation of the current strip steel is larger than the allowable deviation offset of the current strip steel, triggering a production line to stop
Wherein, the calculating the allowable deviation amount corresponding to each of the M width sections includes:
obtaining length information of a roller in the furnace;
obtaining upper limit width information of each of the M width intervals;
calculating the allowable deviation amount corresponding to each of the M width sections according to the length information of the roller in the furnace and the upper limit width information of each of the M width sections;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, include:
increasing the tension of the current furnace zone according to a preset tension, wherein the preset tension range is 5-10 MPa/m2；
Detecting the deviation correcting amount of the correcting frame after the tension is increased;
judging whether the correction amount of the correction frame with the increased tension is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after the tension is increased is smaller than the first threshold value, stopping increasing the tension of the production line;
if the correction amount of the correction frame with the increased tension is not less than the first threshold, judging whether the tension fluctuation value is less than a second threshold;
if the tension fluctuation value is smaller than the second threshold value, continuing to increase the tension of the current furnace zone according to the preset tension until the deviation rectifying amount of the rectifying frame after the tension is increased is smaller than the first threshold value;
wherein, if the actual amount of deviation of current belted steel is less than the allowable amount of deviation offset of current belted steel, just the frame amount of deviation rectification is greater than first threshold value, triggers production line deceleration to increase tension, still include:
reducing the current furnace zone speed according to a preset speed, wherein the current furnace zone speed is used for representing the running speed of the current strip steel, and the preset speed range is 5-10 m/min;
detecting the deviation correcting amount of the deviation correcting frame after speed reduction;
judging whether the deviation correcting amount of the deviation correcting frame after speed reduction is smaller than the first threshold value or not;
if the deviation correcting amount of the correcting frame after speed reduction is smaller than the first threshold value, stopping speed reduction of the production line;
and if the deviation correcting amount of the corrected frame after the speed reduction is not less than the first threshold value, continuing to reduce the speed of the current furnace zone according to the preset speed until the deviation correcting amount of the corrected frame after the speed reduction is less than the first threshold value.
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| CN109943704B (en) * | 2019-04-12 | 2021-08-20 | 首钢京唐钢铁联合有限责任公司 | Method and device for diagnosing buckling of strip steel in vertical annealing furnace |
| CN110172567A (en) * | 2019-05-24 | 2019-08-27 | 首钢京唐钢铁联合有限责任公司 | Strip control method and device |
| CN110273060B (en) * | 2019-06-11 | 2021-04-23 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling fault of deviation correcting roller |
| CN110306028B (en) * | 2019-07-11 | 2021-04-20 | 山西太钢不锈钢股份有限公司 | Transition control method for thickness specification of strip steel in strip steel continuous cold rolling annealing process |
| CN110814051B (en) * | 2019-10-29 | 2021-08-20 | 首钢京唐钢铁联合有限责任公司 | Deviation rectification control method |
| CN111876581B (en) * | 2020-06-04 | 2022-04-08 | 山东钢铁股份有限公司 | Method and system for controlling strip steel width narrowing of continuous annealing furnace |
| CN112029990B (en) * | 2020-07-16 | 2022-04-08 | 宝钢湛江钢铁有限公司 | Automatic deviation rectifying control method for cold-rolled strip steel continuous annealing heating furnace |
| CN114543512B (en) * | 2022-04-01 | 2023-09-29 | 宁波依司特加热设备有限公司 | Steel belt deviation rectifying method and system for steel belt furnace, control terminal and storage medium |
| CN116147507B (en) * | 2023-04-18 | 2023-07-07 | 钛玛科（北京）工业科技有限公司 | Crimping station intelligent detection system |
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