Annealing method and apparatus for ultra-wide IF steel

Abstract

This invention discloses an annealing method and apparatus for ultra-wide IF steel. The annealing method acquires annealing sequence information and determines whether the number of target steel coils preceding the ultra-wide IF steel coils exceeds a first threshold. If the number of target steel coils exceeds the first threshold, it indicates that annealing with more non-ultra-wide steel coils can stabilize the annealing speed of the strip. In this case, the ultra-wide IF steel coils are annealed according to the annealing sequence information. If the number of target steel coils does not exceed the first threshold, it indicates that there are fewer non-ultra-wide steel coils annealed before the ultra-wide IF steel coils, which cannot guarantee a stable annealing speed. In this case, the annealing sequence information is adjusted before annealing the ultra-wide IF steel coils. This annealing method can ensure that the furnace speed of the ultra-wide IF steel coils passing through the annealing furnace is stable within a first preset range during annealing, thus improving the reliability of ultra-wide steel strip annealing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of annealing of super wide strip steel, and in particular to an annealing method and device for super wide IF steel. BACKGROUND

[0002] In the production process of strip steel, continuous annealing needs to be performed on a continuous annealing production line. The annealing furnace is one of the most important devices in the continuous annealing production line. The internal structure of the strip steel can be changed through the annealing furnace, so that the performance of the strip steel meets the process requirements. Therefore, stable production and operation of the annealing furnace is crucial. The standard of the annealing furnace is that the width-thickness ratio is greater than 2500, which belongs to the category of extreme specifications. Therefore, the greater the width-thickness ratio, the higher the requirement for stable operation of the annealing furnace. When the operating speed of the annealing furnace is unstable, the temperature difference in the annealing furnace is too large, the tension is too large, and the like, the cold buckling defect in the furnace will be caused, resulting in shutdown or even strip breakage accidents. Since the annealing furnace is sealed, high-temperature and high-speed operation, the difficulty of handling the above accidents is extremely high, and there is a great safety hazard.

[0003] Therefore, how to improve the reliability of annealing of super wide strip steel is a technical problem to be solved at present. SUMMARY

[0004] The annealing method and device for super wide IF steel can improve the reliability of annealing of super wide strip steel.

[0005] The embodiments of the present application provide the following solutions.

[0006] In a first aspect, the embodiments of the present application provide an annealing method for super wide IF steel, which comprises the following steps.

[0007] Obtaining annealing sequence information of steel coil annealing, wherein the annealing sequence information is the arrangement sequence information of annealing of super wide IF steel coil and non-super wide steel coil;

[0008] According to the annealing sequence information, determining whether the number of target steel coils arranged before the super wide IF steel coil is greater than a first threshold value, wherein the number of target steel coils is the number of continuous annealing of the non-super wide steel coil;

[0009] If yes, annealing the super wide IF steel coil according to the annealing sequence information, so as to ensure that the speed of the super wide IF steel coil passing through the furnace area of the annealing furnace is within a first preset range when the super wide IF steel coil is annealed;

[0010] If no, adjusting the annealing sequence information so that the number of target steel coils arranged before the super wide IF steel coil is greater than the first threshold value, and annealing the super wide IF steel coil according to the adjusted annealing sequence information.

[0011] In an alternative embodiment, before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises:

[0012] determining whether the current time to the start time of production of the ultra-wide IF steel coil is a preset time;

[0013] if yes, outputting a hydrogen supply instruction, and conveying hydrogen to the annealing furnace according to the hydrogen supply instruction to reduce the fan speed of the rapid cooling fan.

[0014] In an alternative embodiment, before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises:

[0015] obtaining the number of interval steel coils between the current annealed steel coil and the ultra-wide IF steel coil;

[0016] when the number of interval steel coils reaches a set threshold, performing temperature control processing on the furnace chamber temperature of the aging furnace and / or the strip temperature of the non-ultra-wide steel coil to reduce the roll shape deformation of the work roll in the furnace.

[0017] In an alternative embodiment, when the number of interval steel coils reaches the set threshold, the temperature control processing on the furnace chamber temperature of the aging furnace and the strip temperature of the non-ultra-wide steel coil comprises:

[0018] when the number of interval steel coils is a preset second threshold, outputting a start instruction to the aging resistance strip of the aging furnace to ensure that the furnace chamber temperature of the aging furnace through which the ultra-wide IF steel coil is annealed is in a second preset range;

[0019] when the number of interval steel coils is a preset third threshold, outputting a first temperature control instruction, a second temperature control instruction, and a third temperature control instruction, and according to the first temperature control instruction, cooling the strip temperature of the slow cooling outlet of the annealing furnace to a first target temperature, according to the second temperature control instruction, controlling the strip temperature of the rapid cooling outlet of the annealing furnace to a second target temperature, and according to the third temperature control instruction, controlling the strip temperature of the aging furnace to a third target temperature.

[0020] In an alternative embodiment, before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises:

[0021] adjusting the annealing temperature and strip tension of a target steel coil to be the same as the annealing temperature and strip tension of the ultra-wide IF steel coil, wherein the target steel coil is at least the previous coil of the non-ultra-wide steel coil of the ultra-wide IF steel coil;

[0022] adjusting the rapid cooling air box in the annealing furnace upward to a preset position.

[0023] In an alternative embodiment, the strip tension of the target coil is adjusted, comprising:

[0024] obtaining a first strip tension between a fast cooling section of the annealing furnace and the aging furnace, a second strip tension of a final cooling section of the annealing furnace, and a third strip tension of an outlet loop;

[0025] reducing the first strip tension by 0-10%, reducing the second strip tension by 15-25%, and reducing the third strip tension by 10-15%.

[0026] In an alternative embodiment, the annealing of the ultra-wide IF coil is performed according to annealing sequence information, comprising:

[0027] when at least a preceding coil of the ultra-wide IF coil is annealed, adjusting the annealing temperature to a target annealing temperature of the ultra-wide IF coil, and controlling the fluctuation range of the target annealing temperature to be no more than 5℃ until the annealing of the ultra-wide IF coil is completed.

[0028] In a second aspect, the embodiments of the present application further provide an annealing device for ultra-wide IF steel, comprising:

[0029] a first obtaining module, configured to obtain annealing sequence information of steel coil annealing, wherein the annealing sequence information is the arrangement sequence information of annealing of the ultra-wide IF coil and the non-ultra-wide coil;

[0030] a determining module, configured to determine whether the number of target coils arranged before the ultra-wide IF coil is greater than a first threshold value according to the annealing sequence information, wherein the number of target coils is the number of continuous annealing of the non-ultra-wide coil;

[0031] a first annealing module, configured to, when the number of target coils arranged before the ultra-wide IF coil is greater than the first threshold value, anneal the ultra-wide IF coil according to the annealing sequence information, so as to ensure that the speed of the ultra-wide IF coil through the furnace area of the annealing furnace during annealing is within a first preset range;

[0032] a second annealing module, configured to, when the number of target coils arranged before the ultra-wide IF coil is not greater than the first threshold value, adjust the annealing sequence information so that the number of target coils arranged before the ultra-wide IF coil is greater than the first threshold value, and anneal the ultra-wide IF coil according to the adjusted annealing sequence information.

[0033] In a third aspect, the embodiments of the present application further provide an electronic device, comprising a processor and a memory, the memory is coupled to the processor, and the memory stores instructions which, when executed by the processor, cause the electronic device to perform the steps of the method of any one of the first aspect.

[0034] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the method in any one of the first aspect.

[0035] Compared with the prior art, the annealing method and device of the ultra-wide IF steel have the following advantages:

[0036] The annealing method of the present application obtains annealing sequence information representing the annealing arrangement sequence of the ultra-wide IF steel coil and the non-ultra-wide steel coil, and determines whether the number of target steel coils arranged before the ultra-wide IF steel coil is greater than a first threshold value according to the annealing sequence information. Since the number of target steel coils is the number of continuous annealing of non-ultra-wide steel coils, when the number of target steel coils is greater than the first threshold value, it means that the annealing speed of the steel strip can be controlled more stably by annealing a larger number of non-ultra-wide steel coils, and then the ultra-wide IF steel coil is annealed according to the annealing sequence information. When the number of target steel coils is not greater than the first threshold value, it means that there are fewer non-ultra-wide steel coils annealed before the ultra-wide IF steel coil, which cannot guarantee that the annealing speed is in a stable control environment, and then the annealing sequence information is adjusted before the annealing of the ultra-wide IF steel coil is performed. This annealing method can ensure that the speed of the ultra-wide IF steel coil through the furnace area of the annealing furnace is stable within a first preset range during annealing, effectively reduces the adverse effects of the deceleration of the steel strip on the annealing of the ultra-wide IF steel coil during annealing, and thus improves the reliability of the annealing of the ultra-wide steel strip. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0038] Figure 1 The flowchart of the annealing method of the ultra-wide IF steel provided by the embodiments of the present application is shown in the figure.

[0039] Figure 2 The structural schematic diagram of part of the annealing production line provided by the embodiments of the present application is shown in the figure.

[0040] Figure 3 The structural schematic diagram of the annealing device of the ultra-wide IF steel provided by the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0041] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the protection scope of the embodiments of the present application.

[0042] The annealing method provided in the embodiments of the present application can be applied to annealing treatment of various ultra-wide strip steels. The ultra-wide strip steel refers to a strip steel whose width is greater than the standard strip steel width of an annealing furnace for annealing. Generally, a width-thickness ratio of 2500 or more is defined as an ultra-wide strip steel. Since IF steel (Interstitial-Free Steel, ultra-low carbon steel) has the characteristics of low yield point, low yield strength ratio and high elongation, cold buckling defects are prone to occur during annealing, resulting in insufficient reliability in the annealing process. The embodiments of the present application will specifically describe how to improve the reliability of ultra-wide strip steel annealing.

[0043] Please refer to Figure 1 , Figure 1 A flowchart of an annealing method of an ultra-wide IF steel provided in the embodiments of the present application is shown in FIG. 1. The method comprises the following steps.

[0044] S11, obtaining annealing sequence information of steel coil annealing, wherein the annealing sequence information is the arrangement sequence information of ultra-wide IF steel coil and non-ultra-wide steel coil annealing.

[0045] Specifically, the annealing sequence information can be obtained based on the preliminary arrangement production plan of the ultra-wide IF steel coil and the non-ultra-wide steel coil. The annealing sequence information can be generated based on the ordering time of the customer. The annealing sequence information represents the ordering result from early to late of the ultra-wide IF steel coil and the non-ultra-wide steel coil annealing. The ultra-wide IF steel coil can be defined as a steel coil with a width greater than 1870 mm or more. Based on the definition, the ultra-wide IF steel coil and the non-ultra-wide steel coil are divided. After obtaining the annealing sequence information of the steel coil annealing, step S12 is entered.

[0046] S12, determining whether the number of target steel coils arranged before the ultra-wide IF steel coil is greater than a first threshold value according to the annealing sequence information, wherein the number of target steel coils is the number of continuous annealing of the non-ultra-wide steel coil.

[0047] Specifically, the first threshold value can be freely set according to actual needs, for example, set to 5 coils of steel, and each coil of non-ultra-wide steel has a length of about 2100 m. If the target number of steel coils is greater than the first threshold value, it means that the annealing speed of the strip steel can be controlled more stably based on a larger number of non-ultra-wide steel coils. Whether the target number of steel coils arranged before the ultra-wide IF steel coil is greater than the first threshold value can be determined based on manual review or determined based on a computer algorithm. For example, the ultra-wide IF steel coil is marked as C, and the non-ultra-wide steel coil is marked as F. The obtained annealing sequence information is {F1, F2, C1, F3, F4, F5, F6, F7, F8, C2, …}. The non-ultra-wide steel coils before the ultra-wide IF steel coil C1 are F1 and F2, and the number is less than the first threshold value 5. Therefore, the target number of steel coils is not greater than the first threshold value. If the target number of steel coils before the ultra-wide IF steel coil C2 is F3-F8, and the number is greater than the first threshold value 5, it means that the target number of steel coils is greater than the first threshold value. After determining whether the target number of steel coils before the ultra-wide IF steel coil is greater than the first threshold value, step S13 or S14 is entered.

[0048] S13, if yes, annealing the ultra-wide IF steel coil according to the annealing sequence information to ensure that the speed of the ultra-wide IF steel coil through the furnace area of the annealing furnace is within the first preset range.

[0049] Specifically, when determining whether the target number of steel coils before the ultra-wide IF steel coil is greater than the first threshold value, the running speed of the strip steel can be controlled to be stable based on the longer non-ultra-wide steel coil before the ultra-wide IF steel coil is annealed. When the ultra-wide IF steel coil is annealed, the effect of "through the plate" is achieved, that is, the steel coil can pass through the annealing furnace smoothly during the annealing process of the ultra-wide IF steel coil, and the risk of strip breakage is reduced. Processing more non-ultra-wide steel coils can avoid the frequent roll change caused by the difference between the front and rear coils of the strip steel, which leads to the speed reduction of the annealing production line, and the welding speed reduction caused by the difference between the adjacent coils of the steel. Therefore, before the ultra-wide IF steel coil is annealed, the speed of the annealing furnace can be controlled within the first preset range. When the ultra-wide IF steel coil is annealed, the speed of the annealing furnace is stable, and the ultra-wide IF steel coil will not be caused by speed fluctuation. Therefore, the risk of cold curling defect of the ultra-wide IF steel coil is reduced. It can be understood that the first preset range can be set according to actual needs, and the ultra-wide IF steel coil can pass through the annealing furnace smoothly during annealing. For example, the first preset range is set to 180-200 mpm.

[0050] S14, if no, adjusting the annealing sequence information so that the target number of steel coils arranged before the ultra-wide IF steel coil is greater than the first threshold value, and annealing the ultra-wide IF steel coil according to the adjusted annealing sequence information.

[0051] Specifically, when the number of target steel coils arranged in front of the ultra-wide IF steel coil is not greater than the first threshold value, it indicates that the annealing sequence arrangement is unreasonable, and the annealing sequence of the ultra-wide IF steel coil and the non-ultra-wide steel coil is re-arranged, and the annealing treatment of each steel coil is implemented based on the adjusted annealing sequence information.

[0052] In actual application, since the annealing temperature is also an important factor causing the deformation of the ultra-wide steel strip, if it is not controlled, it can also cause the cold buckling deformation of the ultra-wide steel strip. Based on this, in a specific embodiment, the annealing of the ultra-wide IF steel coil according to the annealing sequence information includes:

[0053] When at least the front coil of the non-ultra-wide steel coil of the ultra-wide IF steel coil is annealed, the annealing temperature is adjusted to the target annealing temperature of the ultra-wide IF steel coil. During high-temperature annealing, the temperature control has hysteresis and fluctuation. If the corresponding control of the target annealing temperature is implemented when the ultra-wide IF steel coil is annealed, the annealing environment cannot accurately reach the target annealing temperature due to hysteresis. The control of the target annealing temperature is implemented when at least the front coil of the non-ultra-wide steel coil of the ultra-wide IF steel coil, so that the annealing environment temperature reaches the target annealing temperature before the ultra-wide IF steel coil enters the annealing furnace, so that the annealing temperature completes the transition as soon as possible, and the temperature is stable. It can effectively prevent the cold buckling deformation of the ultra-wide steel strip caused by temperature control hysteresis. Further, the fluctuation amplitude of the target annealing temperature is controlled to be not greater than 5°C until the ultra-wide IF steel coil is completed. Controlling the fluctuation amplitude of the temperature can prevent the temperature deviation from being too large, causing the power of the rapid cooling fan on the annealing production line to be adjusted by a large amplitude, thereby causing the temperature fluctuation to cause the cold buckling problem of the steel strip deformation.

[0054] Based on the above analysis, it can be known that the annealing temperature is an important influencing factor of the cold buckling deformation of the ultra-wide steel strip. In a specific embodiment, before the annealing of the ultra-wide IF steel coil according to the annealing sequence information, the method further includes:

[0055] It is judged whether the current time to the start production time of the ultra-wide IF steel coil is a preset time; the preset time can be set to 1h, or can be set to other values through calibration experiment, which can prevent the cooling power of the rapid cooling fan from being adjusted too large.

[0056] When the current time to the start production time is the preset time, a hydrogen supply instruction is output, and hydrogen is delivered to the annealing furnace according to the hydrogen supply instruction to reduce the fan speed of the rapid cooling fan. It can be understood that the introduction of hydrogen during the annealing process can reduce the cooling power of the rapid cooling fan, reduce the fan speed, prevent the rapid cooling fan from being too large to cause the production line to slow down and cause the steel strip to buckle, and equivalent to the use of two cooling means of the rapid cooling, which reduces the risk of buckling caused by improper control of a single means.

[0057] To further reduce the influence of temperature on the deformation of the ultra-wide strip, in a specific embodiment, before annealing the ultra-wide IF coil according to the annealing sequence information, the method further comprises:

[0058] The number of interval coils between the current annealed coil and the ultra-wide IF coil is obtained, the current annealed coil being a coil being annealed on the annealing production line, which can be a non-ultra-wide coil. When the number of interval coils reaches a set threshold, if temperature control is not performed, the ultra-wide strip can be cold-buckled due to the hysteresis factor of temperature control, and the furnace chamber temperature of the aging furnace and / or the strip temperature of the non-ultra-wide coil are controlled to reduce the roll shape deformation of the work roll in the furnace. The furnace chamber temperature or the strip temperature of the non-ultra-wide coil can be controlled separately or simultaneously, and the roll shape of the work roll in the second half of the annealing furnace is controlled in advance to prevent cold-buckling deformation of the ultra-wide IF coil during annealing.

[0059] Preferably, when the number of interval coils reaches the set threshold, the furnace chamber temperature of the aging furnace and the strip temperature of the non-ultra-wide coil are controlled, comprising:

[0060] When the number of interval coils is a preset second threshold, a start instruction is output to the aging resistance band of the aging furnace to ensure that the furnace chamber temperature of the aging furnace through which the ultra-wide IF coil passes during annealing is in a second preset range; the second threshold can be set to 6, and the aging resistance band is started after the start instruction is output to ensure that the furnace chamber temperature of the aging furnace through which the ultra-wide IF coil passes is in the second preset range of 380-400°C.

[0061] When the number of interval coils is a preset third threshold, a first temperature control instruction, a second temperature control instruction, and a third temperature control instruction are output, and the strip temperature of the annealing furnace at the slow cooling outlet is lowered to a first target temperature according to the first temperature control instruction, the strip temperature of the annealing furnace at the fast cooling outlet is controlled at a second target temperature according to the second temperature control instruction, and the strip temperature of the aging furnace is controlled at a third target temperature according to the third temperature control instruction. The third threshold can be set to 3 or 4, the first target temperature can be set to 630°C, and the second target temperature and the third target temperature can be set to a temperature value between 350-370°C. It should be noted that the length of the coil is relatively accurate, and is mostly 2100m. Therefore, the length of the strip can be indirectly calculated by counting the number of interval coils, thereby reducing the amount of data calculation during annealing and improving the operating efficiency of the processing system.

[0062] The strip is moved by the work roll during annealing, and therefore the strip tension is also an important factor affecting the deformation of the strip. Based on this, in a specific embodiment, before annealing the ultra-wide IF coil according to the annealing sequence information, the method further comprises:

[0063] Adjust the annealing temperature and strip tension of the target coil, which is at least the front coil of the super-wide IF steel coil, to be the same as the annealing temperature and strip tension of the super-wide IF steel coil, and adjust the annealing temperature and strip tension of the target coil in advance, so that the annealing environment can be stabilized in advance to the annealing environment required by the super-wide IF steel coil before the annealing treatment of the super-wide IF steel coil is performed. At the same time, the fast cooling air box in the annealing furnace is adjusted upward to a preset position above the work roll in the annealing furnace. After the adjustment, the super-wide strip has a large space in the vertical direction, which prevents the super-wide strip from interfering with the bottom of the fast cooling air box when running in the furnace. The preset position can be set to be more than 85 mm above the work roll.

[0064] In a specific embodiment, the adjustment of the strip tension of the target coil includes:

[0065] First, obtain the first strip tension between the fast cooling section and the aging furnace of the annealing furnace, the second strip tension of the final cooling section of the annealing furnace, and the third strip tension of the outlet loop. The first strip tension represents the initial set tension between the fast cooling section and the aging furnace when annealing the non-super-wide steel coil, the second strip tension represents the initial set tension of the final cooling section when annealing the non-super-wide steel coil, and the third strip tension represents the initial set tension of the outlet loop when annealing the non-super-wide steel coil. The first strip tension, the second strip tension and the third strip tension can be obtained based on the control parameters of the non-super-wide steel coil annealing process. It can be understood that the process sequence of the annealing production line includes preheating section one, preheating section two, heating section one, heating section two, heating section three, soaking section, slow cooling section, fast cooling section, aging section one, aging section two, aging section three, final cooling section, and water quenching section. The outlet of the water quenching section is provided with an outlet loop. Please refer to Figure 2 The final cooling section is between the outlet of the aging furnace and the target tension roll (TM6). The aging furnace includes aging section one, aging section two and aging section three.

[0066] Second, reduce the first strip tension by 0-10%, reduce the second strip tension by 15-25%, and reduce the third strip tension by 10-15%. After adjusting the strip tension at each position, the buckling of the super-wide IF steel coil during annealing can be effectively prevented. Please continue to refer to Figure 2 TM6 and TM7 in the figure are tension rolls, which can be used to adjust the strip tension.

[0067] Based on the same inventive concept as the annealing method, the embodiments of the present application also provide an annealing device for super-wide IF steel. Please refer to Figure 3 The device includes:

[0068] The first acquisition module 301 is used to acquire annealing sequence information of steel coils, wherein the annealing sequence information is the arrangement order information of annealing ultra-wide IF steel coils and non-ultra-wide steel coils.

[0069] The determining module 302 is used to determine, based on the annealing sequence information, whether the number of target steel coils arranged before the ultra-wide IF steel coil is greater than a first threshold, wherein the number of target steel coils is the number of consecutive annealings of the non-ultra-wide steel coils;

[0070] The first annealing module 303 is used to anneal the ultra-wide IF steel coil according to the annealing sequence information when the number of target steel coils arranged before the ultra-wide IF steel coil is greater than a first threshold, so as to ensure that the furnace zone speed of the ultra-wide IF steel coil passing through the annealing furnace during annealing is within a first preset range.

[0071] The second annealing module 304 is used to adjust the annealing order information so that the number of target steel coils arranged before the ultra-wide IF steel coil is greater than the first threshold when the number of target steel coils arranged before the ultra-wide IF steel coil is not greater than the first threshold, and to anneal the ultra-wide IF steel coil according to the adjusted annealing order information.

[0072] In an optional embodiment, the device further includes:

[0073] The judgment module is used to determine whether the time from the current moment to the start time of production of the ultra-wide IF steel coil is a preset time.

[0074] The output module is used to output a hydrogen supply command when the time between the current moment and the start time of the ultra-wide IF steel coil is a preset time, and to supply hydrogen to the annealing furnace according to the hydrogen supply command in order to reduce the fan speed of the fast cooling fan.

[0075] In an optional embodiment, the device further includes:

[0076] The second acquisition module is used to acquire the number of interval steel coils between the currently annealed steel coil and the ultra-wide IF steel coil;

[0077] The processing module is used to perform temperature control on the furnace chamber temperature of the aging furnace and / or the strip temperature of the non-ultra-wide steel coil when the number of spaced steel coils reaches a set threshold, so as to reduce the roll shape deformation of the working rolls in the furnace.

[0078] In one optional embodiment, the processing module includes:

[0079] The first output submodule is used to output a start command to the aging resistance band of the aging furnace when the number of spaced steel coils is a preset second threshold, so as to ensure that the furnace temperature of the ultra-wide IF steel coil passing through the aging furnace during annealing is within the second preset range.

[0080] The second output submodule is used to output a first temperature control command, a second temperature control command, and a third temperature control command when the number of interval steel coils is a preset third threshold. According to the first temperature control command, the strip temperature at the slow cooling outlet of the annealing furnace is reduced to a first target temperature. According to the second temperature control command, the strip temperature at the fast cooling outlet of the annealing furnace is controlled at a second target temperature. According to the third temperature control command, the strip temperature at the aging furnace is controlled at a third target temperature.

[0081] In an optional embodiment, the device further includes:

[0082] The first adjustment module is used to adjust the annealing temperature and strip tension of the target steel coil to be the same as those of the ultra-wide IF steel coil, wherein the target steel coil is the non-ultra-wide steel coil located at least one coil preceding the ultra-wide IF steel coil.

[0083] The second adjustment module is used to adjust the rapid cooling air box inside the annealing furnace upward to a preset position.

[0084] In an optional embodiment, the first adjustment module includes:

[0085] The acquisition submodule is used to acquire the first strip tension between the rapid cooling section of the annealing furnace and the aging furnace, the second strip tension in the final cooling section of the annealing furnace, and the third strip tension at the outlet looper.

[0086] The adjustment submodule is used to reduce the tension of the first strip by 0-10%, the tension of the second strip by 15-25%, and the tension of the third strip by 10-15%.

[0087] In one optional embodiment, both the first annealing module and the second annealing module include:

[0088] The adjustment control submodule is used to adjust the annealing temperature to the target annealing temperature of the ultra-wide IF steel coil when at least the previous non-ultra-wide steel coil is annealed, and to control the fluctuation range of the target annealing temperature to be no greater than 5°C until the ultra-wide IF steel coil is annealed.

[0089] Based on the same inventive concept as the annealing method, embodiments of the present invention also provide an electronic device, including a processor and a memory, wherein the memory is coupled to the processor, and the memory stores instructions that, when executed by the processor, cause the electronic device to perform the steps of any of the annealing methods.

[0090] Based on the same inventive concept as the annealing method, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the annealing methods.

[0091] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0092] 1. By acquiring annealing sequence information that characterizes the annealing order of ultra-wide IF steel coils and non-ultra-wide steel coils, the method determines whether the number of target steel coils arranged before the ultra-wide IF steel coils exceeds a first threshold. Since the number of target steel coils represents the number of consecutive annealed non-ultra-wide steel coils, if the number of target steel coils exceeds the first threshold, it indicates that annealing with more non-ultra-wide steel coils can stabilize the annealing speed of the strip. Therefore, the ultra-wide IF steel coils are annealed according to the annealing sequence information. If the number of target steel coils does not exceed the first threshold, it indicates that there are fewer non-ultra-wide steel coils annealed before the ultra-wide IF steel coils, which cannot guarantee a stable control environment for the annealing speed. Therefore, the annealing sequence information is adjusted before annealing the ultra-wide IF steel coils. This annealing method can ensure that the furnace speed of the ultra-wide IF steel coils is stable within the first preset range during annealing, effectively reducing the adverse effects of strip deceleration on the annealing of ultra-wide IF steel coils during annealing, thus improving the reliability of ultra-wide steel strip annealing.

[0093] 2. The annealing method of this invention extends the limits of continuous annealing furnace process, enhances product competitiveness, and has the advantages of convenient and quick control and simple operation. Even when the width-to-thickness ratio of the limit specification reaches 2892, it can still ensure the stable operation and normal production of the annealing production line.

[0094] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0095] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (modules, systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0098] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0099] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An annealing method of super-wide IF steel, characterized by, The method comprises: obtaining annealing sequence information of a steel coil annealing, wherein the annealing sequence information is the arrangement sequence information of the ultra-wide IF steel coil and the non-ultra-wide steel coil for annealing; determining whether the target steel coil quantity arranged before the ultra-wide IF steel coil is greater than a first threshold value according to the annealing sequence information, wherein the target steel coil quantity is the continuous annealing quantity of the non-ultra-wide steel coil; and the first threshold value is set according to actual requirements; if yes, annealing the ultra-wide IF steel coil according to the annealing sequence information to ensure that the furnace area speed of the ultra-wide IF steel coil through the annealing furnace is within a first preset range during annealing; if no, adjusting the annealing sequence information so that the target steel coil quantity arranged before the ultra-wide IF steel coil is greater than the first threshold value, and annealing the ultra-wide IF steel coil according to the adjusted annealing sequence information.

2. The annealing method of the ultra-wide IF steel according to claim 1, characterized by, Before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises: determining whether the current time to the start production time of the ultra-wide IF steel coil is a preset time; the preset time is set through a calibration experiment; if yes, outputting a hydrogen supply instruction, and conveying hydrogen to the annealing furnace according to the hydrogen supply instruction to reduce the fan speed of the fast cooling fan.

3. The annealing method of the ultra-wide IF steel according to claim 1, characterized by, Before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises: obtaining the interval steel coil quantity between the current annealing steel coil and the ultra-wide IF steel coil; when the interval steel coil quantity reaches a set threshold value, performing temperature control processing on the furnace chamber temperature of the aging furnace and / or the strip steel temperature of the non-ultra-wide steel coil to reduce the roll shape deformation amount of the furnace work roll; the set threshold value includes a preset second threshold value and a preset third threshold value.

4. The annealing method of the ultra-wide IF steel according to claim 3, characterized by, When the interval steel coil quantity reaches the set threshold value, the temperature control processing on the furnace chamber temperature of the aging furnace and the strip steel temperature of the non-ultra-wide steel coil comprises: when the interval steel coil quantity is the preset second threshold value, outputting a start instruction to the aging resistance belt of the aging furnace to ensure that the furnace chamber temperature of the aging furnace through which the ultra-wide IF steel coil passes is within a second preset range; the second threshold value is set to 6; when the interval steel coil quantity is the preset third threshold value, outputting a first temperature control instruction, a second temperature control instruction and a third temperature control instruction, and lowering the strip steel temperature of the slow cooling outlet of the annealing furnace to a first target temperature according to the first temperature control instruction, controlling the strip steel temperature of the fast cooling outlet of the annealing furnace at a second target temperature according to the second temperature control instruction, and controlling the strip steel temperature of the aging furnace at a third target temperature according to the third temperature control instruction; the third threshold value is set to 3 or 4.

5. The annealing method of the ultra-wide IF steel according to claim 1, characterized by, Before annealing the ultra-wide IF steel coil according to the annealing sequence information, the method further comprises: adjusting the annealing temperature and the strip steel tension of the target steel coil to be the same as the annealing temperature and the strip steel tension of the ultra-wide IF steel coil, wherein the target steel coil is at least the previous coil of the non-ultra-wide steel coil of the ultra-wide IF steel coil; adjusting the fast cooling air box in the annealing furnace upward to a preset position.

6. The annealing method of the ultra-wide IF steel according to claim 5, characterized by, Adjusting the strip steel tension of the target steel coil comprises: acquire a first strip tension between a fast cooling section of the annealing furnace and an aging furnace, a second strip tension of a final cooling section of the annealing furnace, and a third strip tension of an outlet loop; reduce the first strip tension by 0-10%, reduce the second strip tension by 15-25%, and reduce the third strip tension by 10-15%.

7. The annealing method of super-wide IF steel according to claim 1, characterized in that, annealing the super-wide IF steel coil according to the annealing sequence information, comprising: when at least a previous coil of the super-wide IF steel coil is being annealed, adjusting an annealing temperature to a target annealing temperature of the super-wide IF steel coil, and controlling a fluctuation range of the target annealing temperature to be not greater than 5°C until the super-wide IF steel coil is completed annealing.

8. An annealing apparatus for ultra-wide IF steel, characterized by comprising: The device comprises: a first acquisition module configured to acquire annealing sequence information of a steel coil annealing, wherein the annealing sequence information is arrangement sequence information of a super-wide IF steel coil and a non-super-wide steel coil being annealed; a determination module configured to determine, according to the annealing sequence information, whether a target steel coil quantity arranged before the super-wide IF steel coil is greater than a first threshold value, wherein the target steel coil quantity is a continuous annealing quantity of the non-super-wide steel coil; and the first threshold value is set according to actual requirements; a first annealing module configured to, when the target steel coil quantity arranged before the super-wide IF steel coil is greater than the first threshold value, anneal the super-wide IF steel coil according to the annealing sequence information, so as to ensure that a furnace area speed of the super-wide IF steel coil through an annealing furnace during annealing is within a first preset range; a second annealing module configured to, when the target steel coil quantity arranged before the super-wide IF steel coil is not greater than the first threshold value, adjust the annealing sequence information so that the target steel coil quantity arranged before the super-wide IF steel coil is greater than the first threshold value, and anneal the super-wide IF steel coil according to the adjusted annealing sequence information.

9. An electronic device, comprising: A processor and a memory are included, the memory is coupled to the processor, the memory stores instructions, and when the instructions are executed by the processor, the electronic device performs the steps of the method of any one of claims 1-7.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the steps of the method of any one of claims 1-7.

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