Steel pipe continuous rolling parameter determination and wall thickness control method and device, equipment and medium

Abstract

The invention relates to the technical field of steel pipe continuous rolling wall thickness control, in particular to a steel pipe continuous rolling parameter determination and wall thickness control method, device, equipment and medium. Then the total extension coefficient of the continuous mill is determined according to the multiple raw material sizes and the multiple first target sizes, and the first target sectional area of the steel pipe rolled by the racks is determined according to the total extension coefficient and the extension proportion coefficient of each rack; secondly, for each rack, according to the corresponding roller parameters and the corresponding first target sectional area, the seam value of the roller and the second target sectional area are determined; and finally, the outlet speeds of the multiple racks are determined according to the multiple second target sectional areas. According to the method, the rolling target sectional areas of the steel pipes are distributed for the multiple racks through the total extension coefficient and the extension coefficient proportion, so that the loads of the racks are balanced, the rolling strength of the steel pipes is matched with the racks, and the equipment parameter determining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall thickness control in continuous rolling of steel pipes, and particularly to a method, device, equipment and medium for determining continuous rolling parameters of steel pipes and controlling wall thickness. Background Art

[0002] Seamless steel pipe is a long steel with a hollow cross-section and no seams around. Due to its characteristics of no weld seams, uniform structure and high strength, it is widely used in industries such as industry, construction, and machinery manufacturing. Among them, seamless steel pipes with larger diameters are mostly produced by hot rolling process.

[0003] The seamless steel pipe of the hot rolling process is formed into a finished product through billet heating, piercing (forming a hollow mandrel), rolling (rolling and forming by a hot rolling mill), sizing / reducing (adjusting the outer diameter) and subsequent auxiliary processes. In the steel pipe forming process, hot rolling, as a key process, greatly affects the quality of the produced steel pipe.

[0004] Currently, relatively advanced seamless steel pipe rolling equipment usually adopts a continuous rolling structure. The continuous rolling equipment has the characteristics of high production efficiency and good consistency. However, because multiple rolling mills are connected in series for production, there are high requirements for the adjustment and control accuracy of various parameters of the rolling mills. When the equipment parameters are set unreasonably, a lot of time and energy need to be spent on adjusting the equipment in the early stage, which seriously affects the production progress. Adjusting the parameters of the continuous rolling equipment manually is a slow process with low efficiency.

[0005] Based on this, it is necessary to develop and design a method for determining continuous rolling parameters of steel pipes. Summary of the Invention

[0006] The embodiments of the present invention provide a method, device, equipment and medium for determining continuous rolling parameters of steel pipes and controlling wall thickness, which are used to solve the problem that it is not easy to quickly determine the continuous rolling parameters of steel pipes in the prior art.

[0007] In a first aspect, the embodiments of the present invention provide a method for determining continuous rolling parameters of steel pipes, including: Obtaining a plurality of raw material sizes, a plurality of first target sizes and a plurality of roll parameters, wherein the first target size is the size of the steel pipe rolled by the continuous rolling equipment, the continuous rolling equipment is provided with a plurality of sequentially arranged stands, each roll parameter corresponds to the roll of one stand, and the raw material size is the size of the steel pipe before entering the continuous rolling equipment; Determining the total elongation coefficient of the continuous rolling mill according to the plurality of raw material sizes and the plurality of first target sizes, and determining the first target cross-sectional area of the steel pipe rolled by the stand according to the total elongation coefficient and the elongation ratio coefficient of each stand; For each stand, determine the roll gap value and the second target cross-sectional area according to the corresponding roll parameters and the corresponding first target cross-sectional area, where the second target cross-sectional area is determined according to the roll gap value and the roll parameters, and the difference between the second target cross-sectional area and the first target cross-sectional area is within the set range; Determine the outlet speeds of multiple stands according to multiple second target cross-sectional areas.

[0008] In a possible implementation manner, the method for determining the total elongation coefficient of the tandem mill according to the multiple raw material sizes and the multiple first target sizes, and determining the first target cross-sectional area of the steel pipe rolled by the stand according to the total elongation coefficient and the elongation proportion coefficient of each stand includes: Use the cross-sectional area at the entrance of the primary stand determined according to the multiple raw material sizes as the cross-sectional area at the entrance of the stand; Use the cross-sectional area at the exit of the last stand determined according to the multiple first target sizes as the cross-sectional area at the exit of the stand; Use the ratio of the cross-sectional area at the entrance of the stand to the cross-sectional area at the exit of the stand as the total elongation coefficient; Multiply the total elongation coefficient by the elongation proportion coefficient of each stand respectively to obtain the preset elongation coefficients of multiple stands; Determine the first target cross-sectional area of the steel pipe rolled by multiple fixed stands according to the multiple preset elongation coefficients of the stands and the cross-sectional area at the entrance of the stand, or determine the first target cross-sectional area of the steel pipe rolled by multiple fixed stands according to the multiple preset elongation coefficients of the stands and the cross-sectional area at the exit of the stand.

[0009] In a possible implementation manner, the method for, for each stand, determining the roll gap value and the second target cross-sectional area according to the corresponding roll parameters and the corresponding first target cross-sectional area includes: The roll parameters include: roll pass and mandrel diameter; For each stand, perform the following steps respectively: Obtain and initialize the first roll gap value; Determine the intermediate target cross-sectional area by geometric method according to the first roll gap value, roll pass and mandrel diameter; Use the difference between the first target cross-sectional area and the target cross-sectional area as the area difference; If the area difference is within the set range, use the intermediate target cross-sectional area as the second target cross-sectional area and use the first roll gap value as the roll gap value of the roll; Otherwise, adjust the first roll gap value according to the area difference and the set range, and jump to the step of determining the intermediate target cross-sectional area by geometric method according to the first roll gap value, roll pass and mandrel diameter.

[0010] Second aspect, an embodiment of the present invention provides a method for controlling the wall thickness of continuous rolling of steel pipes, including: Obtain the out-of-tolerance type of the wall thickness of the steel pipe; If the out-of-tolerance type is the overall wall thickness deviation, determine a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and use the steel pipe continuous rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds, where each stand corresponds to a roll gap value and an outlet speed; If the out-of-tolerance type is the single-side wall thickness deviation, determine a plurality of target stands according to the single-side wall thickness deviation position, adjust the plurality of first target cross-sectional areas according to the single-side wall thickness deviation amount, and use the method of the first aspect above according to the adjusted plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds.

[0011] If the out-of-tolerance type is the single-side wall thickness deviation, determine a plurality of target stands according to the single-side wall thickness deviation position, adjust the plurality of first target cross-sectional areas according to the single-side wall thickness deviation amount, and use the steel pipe continuous rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above according to the adjusted plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds, where each stand corresponds to a roll gap value and an outlet speed.

[0012] In a possible implementation manner, the step of determining a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and using the steel pipe continuous rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds includes: Take the last stand as the target stand; Determine the first target cross-sectional area of the steel pipe rolled by the target stand according to the overall wall thickness deviation amount; Target stand adjustment step: Adjust the second target cross-sectional area and the roll gap value of the target stand by using the steel pipe continuous rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above according to the first target cross-sectional area of the steel pipe rolled by the target stand; Determine the load of the target stand according to the adjusted second target cross-sectional area and the roll gap value; If the load of the target stand meets the load threshold, adjust the outlet speeds of multiple stands according to the second target cross-sectional area of the target stand, and adjust multiple stands according to the adjusted outlet speeds of multiple stands and the adjusted gap values; Otherwise, take the difference between the load of the target rack and the load threshold as the load difference, determine the gap value of the target rack according to the load difference, take the previous rack of the target rack as the target rack, determine the first target cross-sectional area of the target rack according to the load difference, and jump to the target rack adjustment step.

[0013] In a possible implementation manner, the method for determining a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and determining a plurality of roll gap values and a plurality of outlet speeds according to the plurality of first target cross-sectional areas by using the steel pipe tandem rolling parameter determination method as described in the first aspect or any possible implementation manner of the first aspect includes: Adjust the first target cross-sectional area of the steel pipe rolled by multiple racks according to the initial load distribution ratio of multiple racks; According to the first target cross-sectional area of the steel pipe rolled by the adjusted multiple racks, use the steel pipe tandem rolling parameter determination method as described in the first aspect or any possible implementation manner of the first aspect to adjust the second target cross-sectional area and the roll gap value of each rack; Load calculation step: For each rack, determine the rack load according to the adjusted second target cross-sectional area and the roll gap value; If there is a rack load greater than the load threshold, find the rack with the smallest load according to the loads of multiple racks, increase the load of the rack with the smallest load, adjust the first target cross-sectional area of the steel pipe rolled by multiple racks according to the new load ratio, and use the steel pipe tandem rolling parameter determination method as described in the first aspect or any possible implementation manner of the first aspect according to the first target cross-sectional area of the steel pipe rolled by the adjusted multiple racks to adjust the second target cross-sectional area and the roll gap value of each rack, and jump to the load calculation step; Otherwise, adjust the outlet speeds of multiple racks according to the adjusted second target cross-sectional areas of multiple racks, and adjust multiple racks according to the adjusted outlet speeds of multiple racks and the adjusted gap values.

[0014] In a possible implementation manner, the method for determining a plurality of target racks according to the single-side wall thickness deviation position, adjusting a plurality of first target cross-sectional areas according to the single-side wall thickness deviation amount, and determining a plurality of roll gap values and a plurality of outlet speeds according to the adjusted plurality of first target cross-sectional areas by using the steel pipe tandem rolling parameter determination method as described in the first aspect or any possible implementation manner of the first aspect includes: Select a plurality of odd-numbered racks or a plurality of even-numbered racks as a plurality of target racks according to the single-side wall thickness deviation position; Adjust the single-side wall thickness adjustment amount of multiple target racks according to the initial load distribution ratio of multiple racks; Cross-sectional area determination step: Adjust the first target cross-sectional area of the steel pipe rolled by multiple target racks according to the single-side wall thickness adjustment amount; According to the first target cross-sectional area of the steel pipe rolled by multiple stands after adjustment, using the steel pipe tandem rolling parameter determination method described in the first aspect above or any possible implementation manner of the first aspect, adjust the second target cross-sectional area and the roll gap value of each stand; For each target stand, determine the unilateral roll gap adjustment amount according to the roll gap value, and check the unilateral roll gap adjustment amount for limit check; If there is a target stand that does not meet the limit check condition, readjust the single-side wall thickness adjustment amount of multiple target stands, and jump to the cross-sectional area determination step; Otherwise, adjust the outlet speeds of multiple stands according to the multiple adjusted second target cross-sectional areas, and adjust multiple stands according to the adjusted outlet speeds of multiple stands and the adjusted gap values.

[0015] In a third aspect, an embodiment of the present invention provides a steel pipe tandem rolling parameter determination device for implementing the steel pipe tandem rolling parameter determination method described in the first aspect above or any possible implementation manner of the first aspect. The steel pipe tandem rolling parameter determination device includes: A parameter acquisition module for acquiring multiple raw material dimensions, multiple first target dimensions, and multiple roll parameters, where the first target dimension is the dimension of the steel pipe rolled by a tandem rolling device, the tandem rolling device is provided with multiple stands arranged in sequence, each roll parameter corresponds to the roll of one stand, and the raw material dimension is the dimension of the steel pipe before entering the tandem rolling device; A target cross-sectional area determination module for determining the total elongation coefficient of the tandem rolling mill according to the multiple raw material dimensions and the multiple first target dimensions, and determining the first target cross-sectional area of the steel pipe rolled by the stand according to the total elongation coefficient and the elongation proportion coefficient of each stand; A target cross-sectional area adjustment module for, for each stand, determining the roll gap value and the second target cross-sectional area according to the corresponding roll parameter and the corresponding first target cross-sectional area, where the second target cross-sectional area is determined according to the roll gap value and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within a set range; And, An outlet speed determination module for determining the outlet speeds of multiple stands according to multiple second target cross-sectional areas.

[0016] In a fourth aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor. A computer program that can run on the processor is stored in the memory. When the processor executes the computer program, the steps of the method described in the first aspect, any possible implementation manner of the first aspect, the second aspect, or any possible implementation manner of the second aspect are implemented.

[0017] Fifth aspect, an embodiment of the present invention provides a computer-readable storage medium storing a computer program, which when executed by a processor implements the steps of the method as described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect above.

[0018] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: The embodiments of the present invention disclose a method for determining continuous rolling parameters of steel pipes. First, a plurality of raw material sizes, a plurality of first target sizes, and a plurality of roll parameters are obtained. Among them, the first target size is the size of the steel pipe rolled by the continuous rolling equipment, and the continuous rolling equipment is provided with a plurality of sequentially arranged stands. Each roll parameter corresponds to the roll of one stand, and the raw material size is the size of the steel pipe before entering the continuous rolling equipment. Then, the total elongation coefficient of the continuous rolling mill is determined according to the plurality of raw material sizes and the plurality of first target sizes, and the first target cross-sectional area of the steel pipe rolled by the stand is determined according to the total elongation coefficient and the elongation ratio coefficient of each stand. Then, for each stand, according to the corresponding roll parameter and the corresponding first target cross-sectional area, the roll gap value and the second target cross-sectional area are determined, where the second target cross-sectional area is determined according to the roll gap value and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within a set range. Finally, the outlet speeds of the plurality of stands are determined according to the plurality of second target cross-sectional areas. The present invention distributes the rolling target cross-sectional area of the steel pipe to the plurality of stands through the total elongation coefficient and the elongation coefficient ratio, so that the loads of each stand are balanced, the rolling strength of the steel pipe is adapted to the stand, and the efficiency of determining equipment parameters is improved. By distributing the roll gap value and the outlet speed to the stand through the rolling area, the continuous rolling flow is balanced and the consistency of the steel pipe is good. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a flowchart of the method for determining continuous rolling parameters of steel pipes provided by the embodiments of the present invention; Figure 2 is a flowchart of the method for controlling the wall thickness of continuous rolling of steel pipes provided by the embodiments of the present invention; Figure 3 is a functional block diagram of the device for determining continuous rolling parameters of steel pipes provided by the embodiments of the present invention; Figure 4 is a functional block diagram of the electronic device provided by the embodiments of the present invention. Specific Embodiments

[0021] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. However, those skilled in the art should clearly understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, and methods are omitted to avoid unnecessary details from interfering with the description of the present invention.

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will illustrate through specific embodiments in conjunction with the accompanying drawings.

[0023] The following will provide a detailed description of the embodiments of the present invention. This example is implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0024] Figure 1 It is a flowchart of the method for determining the parameters of tandem rolling of steel pipes provided in the first aspect of the embodiment of the present invention.

[0025] As Figure 1 shown, it shows the implementation flowchart of the method for determining the parameters of tandem rolling of steel pipes provided in the first aspect of the embodiment of the present invention, which is described in detail as follows: In step 101, a plurality of raw material dimensions, a plurality of first target dimensions, and a plurality of roll parameters are obtained. Among them, the first target dimension is the dimension of the steel pipe rolled by the tandem rolling equipment. The tandem rolling equipment is provided with a plurality of sequentially arranged stands, and each roll parameter corresponds to the roll of one stand. The raw material dimension is the dimension of the steel pipe before entering the tandem rolling equipment.

[0026] In step 102, the total elongation coefficient of the tandem rolling mill is determined according to the plurality of raw material dimensions and the plurality of first target dimensions, and the first target cross-sectional area of the steel pipe rolled by the stand is determined according to the total elongation coefficient and the elongation proportion coefficient of each stand.

[0027] In some embodiments, the determining the total elongation coefficient of the tandem rolling mill according to the plurality of raw material dimensions and the plurality of first target dimensions, and determining the first target cross-sectional area of the steel pipe rolled by the stand according to the total elongation coefficient and the elongation proportion coefficient of each stand includes: Taking the cross-sectional area at the entrance of the primary stand determined according to the plurality of raw material dimensions as the cross-sectional area at the entrance of the stand; Taking the cross-sectional area at the exit of the last stand determined according to the plurality of first target dimensions as the cross-sectional area at the exit of the stand; Taking the ratio of the cross-sectional area at the entrance of the stand to the cross-sectional area at the exit of the stand as the total elongation coefficient; Multiply the total elongation coefficient by the elongation proportion coefficient of each stand to obtain a plurality of preset elongation coefficients for the stands; Determine the first target cross-sectional area of the steel pipe rolled by a plurality of fixed stands according to the plurality of preset elongation coefficients for the stands and the cross-sectional area at the inlet of the stand, or determine the first target cross-sectional area of the steel pipe rolled by a plurality of fixed stands according to the plurality of preset elongation coefficients for the stands and the cross-sectional area at the outlet of the stand.

[0028] Exemplarily, in the embodiment of the present invention, the dimensions of the raw material and the dimensions of the steel pipe after continuous rolling are first obtained. These dimension data generally include: Parameters such as the outer diameter of the pipe at the inlet of the continuous rolling mill, the wall thickness of the inlet pipe, the outer diameter of the pipe at the outlet, the wall thickness of the outlet pipe, the speed of the outlet pipe, the outer diameter of the mandrel, the roll diameter of each stand, the roll pass, the elongation proportion coefficient of each stand, etc. Then, the cross-sectional area of the inlet stand is calculated using the first formula:

[0029] In the above formula, is the inlet cross-sectional area, is the outer diameter of the raw material, is the wall thickness of the raw material, is the pi.

[0030] Next, the cross-sectional area at the outlet of the continuous rolling is calculated using the second formula:

[0031] In the above formula, is the outlet cross-sectional area, is the outer diameter of the steel pipe after continuous rolling, is the wall thickness of the steel pipe after continuous rolling.

[0032] Then, the total elongation coefficient is calculated using the third formula:

[0033] In the above formula, is the total elongation coefficient.

[0034] Since the elongation proportion coefficients of each stand are preset data, the elongation coefficients of each stand can be determined:

[0035] In the above formula, is the elongation coefficient of the th stand, is the th elongation proportion coefficient of the stand.

[0036] And according to the elongation coefficients of each stand, the cross-sectional areas of each stand can be obtained step by step:

[0037] In the above formula, is the outlet cross-sectional area of the th stand, is the outlet cross-sectional area of the th stand.

[0038] Through the above formulas, the first target cross-sectional area (theoretical cross-sectional area) of the steel pipe at the outlet of each stand can be determined.

[0039] In step 103, for each stand, according to the corresponding roll parameters and the corresponding first target cross-sectional area, the roll gap value and the second target cross-sectional area are determined, where the second target cross-sectional area is determined according to the roll gap value and the roll parameters, and the difference between the second target cross-sectional area and the first target cross-sectional area is within a set range.

[0040] In some embodiments, the determining the roll gap value and the second target cross-sectional area according to the corresponding roll parameters and the corresponding first target cross-sectional area for each stand includes: The roll parameters include: roll pass and mandrel diameter; For each stand, the following steps are respectively performed: Obtain and initialize the first gap value; Determine the intermediate target cross-sectional area by geometric method according to the first gap value, roll pass and mandrel diameter; Take the difference between the first target cross-sectional area and the target cross-sectional area as the area difference; If the area difference is within the set range, take the intermediate target cross-sectional area as the second target cross-sectional area and the first gap value as the roll gap value; Otherwise, adjust the first gap value according to the area difference and the set range, and jump to the step of determining the intermediate target cross-sectional area by geometric method according to the first gap value, roll pass and mandrel diameter.

[0041] Exemplarily, the area of the steel pipe after rolling by the stand is determined by the roll pass, the roll gap value and the diameter of the mandrel. Therefore, after knowing the above parameters, the cross-sectional area of the steel pipe after rolling by the stand can be determined by geometric method according to the above parameters.

[0042] Subtract the cross-sectional area obtained by the geometric method from the first target cross-sectional area obtained in the above steps. If the difference deviates from the set range, increase or decrease the slit value used in the geometric method by a step value, substitute the adjusted slit value into the above geometric method again to determine the cross-sectional area, and repeat the above process until the difference between the cross-sectional area determined by the geometric method and the first target cross-sectional area is within the set range. At this time, the slit value can be fixed as the slit value of the rack, and the cross-sectional area determined by the geometric method is used as the second target cross-sectional area (the final cross-sectional area).

[0043] In step 104, determine the outlet speeds of multiple racks according to multiple second target cross-sectional areas.

[0044] Exemplarily, after determining the target cross-sectional area, the outlet speeds of each rack can be determined according to the flow principle, which can be expressed by the formula:

[0045] In the above formula, is the second target cross-sectional area of the th rack, is the product of the outlet speeds of the th rack, is the second target cross-sectional area of the th rack, is the th rack's outlet speed.

[0046] In the implementation manner of the method for determining the parameters of continuous rolling of steel pipes according to the present invention, first obtain multiple raw material sizes, multiple first target sizes, and multiple roll parameters. Among them, the first target size is the size of the steel pipe rolled by the continuous rolling equipment. The continuous rolling equipment is provided with multiple racks arranged in sequence, each roll parameter corresponds to the roll of one rack, and the raw material size is the size of the steel pipe before entering the continuous rolling equipment; then determine the total elongation coefficient of the continuous rolling mill according to the multiple raw material sizes and the multiple first target sizes, and determine the first target cross-sectional area of the steel pipe rolled by the rack according to the total elongation coefficient and the elongation ratio coefficient of each rack; then for each rack, determine the slit value of the roll and the second target cross-sectional area according to the corresponding roll parameter and the corresponding first target cross-sectional area, where the second target cross-sectional area is determined according to the slit value of the roll and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within the set range; finally, determine the outlet speeds of multiple racks according to multiple second target cross-sectional areas. According to the total elongation coefficient and the elongation ratio coefficient, the present invention distributes the rolling target cross-sectional area of the steel pipe to multiple racks, so that the loads of each rack are balanced, the rolling strength of the steel pipe is adapted to the rack, and the efficiency of determining equipment parameters is improved. By distributing the slit value and the outlet speed to the rack according to the rolling area, the continuous rolling flow is balanced and the consistency of the steel pipe is good.

[0047] Figure 2 It is a flowchart of the steel pipe continuous rolling wall thickness control method provided by the first aspect of the embodiment of the present invention.

[0048] As Figure 2 shown, it shows the implementation flowchart of the steel pipe continuous rolling wall thickness control method provided by the first aspect of the embodiment of the present invention, which is described in detail as follows: In step 201, obtain the out-of-tolerance type of the steel pipe wall thickness.

[0049] In step 202, if the out-of-tolerance type is the overall wall thickness deviation, determine a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and use the steel pipe continuous rolling parameter determination method described in the above first aspect or any possible implementation manner of the first aspect according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds, where each stand corresponds to a roll gap value and an outlet speed.

[0050] In some embodiments, the determining a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and using the steel pipe continuous rolling parameter determination method described in the above first aspect or any possible implementation manner of the first aspect according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of outlet speeds includes: Take the last stand as the target stand; According to the overall wall thickness deviation amount, determine the first target cross-sectional area of the steel pipe rolled by the target stand; Target stand adjustment step: According to the first target cross-sectional area of the steel pipe rolled by the target stand, use the steel pipe continuous rolling parameter determination method described in the above first aspect or any possible implementation manner of the first aspect to adjust the second target cross-sectional area and the roll gap value of the target stand; According to the adjusted second target cross-sectional area and roll gap value, determine the load of the target stand; If the load of the target stand meets the load threshold, adjust the outlet speeds of multiple stands according to the second target cross-sectional area of the target stand, and adjust multiple stands according to the adjusted outlet speeds of multiple stands and the adjusted gap values; Otherwise, take the difference between the load of the target stand and the load threshold as the load difference, determine the gap value of the target stand according to the load difference, take the previous stand of the target stand as the target stand, determine the first target cross-sectional area of the target stand according to the load difference, and jump to the target stand adjustment step.

[0051] In some embodiments, a plurality of first target cross-sectional areas are determined according to the overall wall thickness deviation amount, and according to the plurality of first target cross-sectional areas, the steel pipe tandem rolling parameter determination method described in the first aspect above or any possible implementation manner of the first aspect is used to determine a plurality of roll gap values and a plurality of outlet speeds, including: Adjust the first target cross-sectional area of the steel pipe rolled by each stand according to the initial load distribution ratio of the plurality of stands; According to the first target cross-sectional area of the steel pipe rolled by the plurality of stands after adjustment, use the steel pipe tandem rolling parameter determination method described in the first aspect above or any possible implementation manner of the first aspect to adjust the second target cross-sectional area and the roll gap value of each stand; Load calculation step: For each stand, determine the stand load according to the adjusted second target cross-sectional area and the roll gap value; If there is a stand load greater than the load threshold, find the stand with the smallest load according to the loads of the plurality of stands, increase the load of the stand with the smallest load, adjust the first target cross-sectional area of the steel pipe rolled by the plurality of stands according to the new load ratio, and use the steel pipe tandem rolling parameter determination method described in the first aspect above or any possible implementation manner of the first aspect according to the adjusted first target cross-sectional area of the steel pipe rolled by the plurality of stands to adjust the second target cross-sectional area and the roll gap value of each stand, and jump to the load calculation step; Otherwise, adjust the outlet speeds of the plurality of stands according to the adjusted second target cross-sectional areas of the plurality of stands, and adjust the plurality of stands according to the adjusted outlet speeds of the plurality of stands and the adjusted gap values.

[0052] Exemplarily, the second aspect of the present invention provides a method for controlling the wall thickness of steel pipe tandem rolling, which is mainly used to adjust the wall thickness of the steel pipe during the production process. Since the wall thickness deviation can be divided into the overall wall thickness deviation and the single-side wall thickness deviation, therefore, based on the different types of wall thickness deviation, the present invention adopts different control methods.

[0053] In terms of the overall wall thickness deviation, the first method provided by the present invention is to process the wall thickness mean value of each cross-section into the wall thickness mean value of the whole length according to the wall thickness data returned by the last stand collected by the tandem rolling equipment, and then adjust the wall thickness according to the deviation amount of the wall thickness. After the wall thickness adjustment is completed, since the inner diameter is the same as the mandrel diameter, the adjusted cross-sectional area can be determined. This cross-sectional area is used as the first target cross-sectional area, and the method provided by the first aspect is used to determine the gap value and the outlet speed. Check the load of the stand according to this gap value and outlet speed. If the load condition is met, adjust the stand according to this gap value and outlet speed.

[0054] If the load condition is not met, based on the wall thickness deviation amount that the last-stage rack can consume, the wall thickness adjustment amount of the previous stage is given. The previous-stage rack adjusts the wall thickness according to the wall thickness adjustment amount and determines the cross-sectional area after the wall thickness adjustment. Similar to the previous steps, the method of the first aspect is used to determine the gap value and the outlet speed of the previous-stage rack, and finally determine the load of the previous rack, and verify whether the previous rack meets the load condition. If it meets, adjust the rack according to the adjusted seam and outlet speed.

[0055] That is to say, the embodiment of the present invention adjusts the adjustment amount of the rack step by step according to the load of the rack, so as to adjust the wall thickness of the steel pipe on the premise of meeting the rack load.

[0056] In terms of the overall wall thickness deviation, the second method provided by the present invention is to process the wall thickness mean value of each cross-section into the wall thickness mean value of the whole length according to the wall thickness data returned by the last-stage rack collected by the continuous rolling equipment, and then adjust the wall thickness of each stage of the rack according to the initial load distribution ratio of each stage of the rack. After adjusting the wall thickness of each stage of the rack, as can be seen from the description of the previous steps, the cross-sectional area of the steel pipe at the outlet of the rack after the wall thickness adjustment can be determined. This cross-sectional area is used as the first target cross-sectional area, and the method provided by the first aspect is used to determine the gap value and the outlet speed. According to this gap value and outlet speed, the load of the rack is checked. If the load condition is met, adjust each stage of the rack according to the adjusted gap value and outlet speed.

[0057] If not, readjust the load distribution ratio of each rack. Generally, adjust the load distribution ratio by increasing the load distribution ratio of the rack with a small load. After the distribution ratio is adjusted, then adjust the wall thickness of each stage of the rack according to the adjusted load distribution ratio of each stage of the rack, and then repeat the process of determining the load of each stage of the rack and verifying the load of each stage of the rack.

[0058] The above two methods both adjust the overall wall thickness of the rolled steel pipe on the basis of ensuring the equipment load and operation safety, ensuring the safety of the equipment operation and the reliability of the product quality.

[0059] In step 203, if the out-of-tolerance type is single-side wall thickness deviation, determine multiple target racks according to the single-side wall thickness deviation position, adjust multiple first target cross-sectional areas according to the single-side wall thickness deviation amount, and use the steel pipe continuous rolling parameter determination method described in the above first aspect or any possible implementation manner of the first aspect according to the adjusted multiple first target cross-sectional areas to determine multiple roll gap values and multiple outlet speeds, where each rack corresponds to a roll gap value and an outlet speed.

[0060] In some embodiments, determining a plurality of target stands according to the single-side wall thickness deviation position, adjusting a plurality of first target cross-sectional areas according to the single-side wall thickness deviation amount, and determining a plurality of roll gap values and a plurality of exit speeds by using the steel tube tandem rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above includes: Selecting a plurality of odd-numbered stands or a plurality of even-numbered stands as the plurality of target stands according to the single-side wall thickness deviation position; Adjusting the single-side wall thickness adjustment amount of the plurality of target stands according to the initial load distribution ratio of the plurality of stands; Cross-sectional area determination step: Adjusting the first target cross-sectional area of the steel tube rolled by the plurality of target stands according to the single-side wall thickness adjustment amount; Using the steel tube tandem rolling parameter determination method described in the first aspect or any possible implementation manner of the first aspect above according to the adjusted first target cross-sectional area of the steel tube rolled by the plurality of stands, adjusting the second target cross-sectional area and the roll gap value of each stand; For each target stand, determining the single-side roll gap adjustment amount according to the roll gap value, and checking and restricting the single-side roll gap adjustment amount; If there is a target stand that does not meet the restriction check condition, readjusting the single-side wall thickness adjustment amount of the plurality of target stands, and jumping to the cross-sectional area determination step; Otherwise, adjusting the exit speeds of the plurality of stands according to the adjusted second target cross-sectional areas of the plurality of stands, and adjusting the plurality of stands according to the adjusted exit speeds of the plurality of stands and the adjusted gap values.

[0061] Exemplarily, for the control of the single-side wall thickness out-of-tolerance, the present invention first processes the wall thickness mean value of each cross-section into the wall thickness mean value of the whole length according to the wall thickness data returned by the tandem rolling equipment, then determines a plurality of odd-numbered stands or a plurality of even-numbered stands as the plurality of target stands according to the position of the single-side wall thickness deviation, and then adjusts the wall thickness of the plurality of target stands according to the initial load distribution ratio of each stand. After adjusting the wall thickness of the plurality of target stands, as can be seen from the description of the foregoing steps, the cross-sectional area of the steel tube at the exit of the stand after adjusting the wall thickness can be determined. This cross-sectional area is used as the first target cross-sectional area, and the method provided in the first aspect is used to determine the gap value and the exit speed. At this time, a limit check is performed on the adjustment amount of the gap value. If the limit check condition is met, the stands are adjusted according to the adjusted gap value and the exit speed.

[0062] If the limit check condition is not met, re-distribute the wall thickness adjustment amount of the plurality of target stands, and repeat the process of obtaining the adjusted gap value and checking whether the gap value meets the check condition until the limit check condition is met.

[0063] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not imply the order of execution. The order of execution of each process should be determined according to its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0064] The following are the device embodiments of the present invention. For the details not described in detail therein, reference may be made to the corresponding method embodiments above.

[0065] Figure 3 is the functional block diagram of the steel pipe tandem rolling parameter determination device provided by the embodiments of the present invention. Referring to Figure 3 , the steel pipe tandem rolling parameter determination device includes: a parameter acquisition module 301, a target cross-sectional area determination module 302, a target cross-sectional area adjustment module 303, and an outlet speed determination module 304, wherein: The parameter acquisition module 301 is configured to acquire a plurality of raw material dimensions, a plurality of first target dimensions, and a plurality of roll parameters. Among them, the first target dimension is the dimension of the steel pipe rolled by the tandem rolling equipment. The tandem rolling equipment is provided with a plurality of sequentially arranged stands, and each roll parameter corresponds to the roll of one stand. The raw material dimension is the dimension of the steel pipe before entering the tandem rolling equipment; The target cross-sectional area determination module 302 is configured to determine the total elongation coefficient of the tandem rolling mill according to the plurality of raw material dimensions and the plurality of first target dimensions, and determine the first target cross-sectional area of the steel pipe rolled by the stand according to the total elongation coefficient and the elongation ratio coefficient of each stand; The target cross-sectional area adjustment module 303 is configured to, for each stand, determine the roll gap value and the second target cross-sectional area according to the corresponding roll parameter and the corresponding first target cross-sectional area. Among them, the second target cross-sectional area is determined according to the roll gap value and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within a set range; The outlet speed determination module 304 is configured to determine the outlet speeds of a plurality of stands according to a plurality of second target cross-sectional areas.

[0066] Figure 4 is the functional block diagram of the electronic device provided by the embodiments of the present invention. As Figure 4 shown, the electronic device 4 of this embodiment includes: a processor 400 and a memory 401. A computer program 402 that can run on the processor 400 is stored in the memory 401. When the processor 400 executes the computer program 402, the steps in the above various steel pipe tandem rolling parameter determination methods and embodiments are implemented, such as Figure 1 the steps 101 to 104 shown.

[0067] Exemplarily, the computer program 402 may be divided into one or more modules / units, which are stored in the memory 401 and executed by the processor 400 to implement the present invention.

[0068] The electronic device 4 may be a computing device such as a desktop computer, a notebook, a palm computer, or a cloud server. The electronic device 4 may include, but is not limited to, a processor 400 and a memory 401. Those skilled in the art can understand that Figure 4 merely examples of the electronic device 4, which do not constitute a limitation to the electronic device 4, may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, the electronic device 4 may further include input / output devices, network access devices, a bus, etc.

[0069] The so-called processor 400 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0070] The memory 401 may be an internal storage unit of the electronic device 4, such as the hard disk or memory of the electronic device 4. The memory 401 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. Further, the memory 401 may also include both the internal storage unit and the external storage device of the electronic device 4. The memory 401 is used to store the computer program 402 and other programs and data required by the electronic device 4. The memory 401 may also be used to temporarily store data that has been output or is to be output.

[0071] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of the present application. The specific working processes of the units and modules in the above system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0072] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0073] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0074] In the embodiments provided by the present invention, it should be understood that the disclosed device / electronic device and method can be implemented in other ways. For example, the device / electronic device embodiments described above are only illustrative. For example, the division of the module or unit is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form.

[0075] The unit described as a separated component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0076] In addition, each functional unit in various embodiments of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of a software functional unit.

[0077] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on such an understanding, all or part of the processes in the above-described method embodiments of the present invention may also be completed by instructing relevant hardware through a computer program. The computer program may be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above-described method and apparatus embodiments may be implemented. Among them, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0078] The above-described embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention, and all should be included in the protection scope of the present invention.

Claims

1. A method for determining the parameters of tandem rolling of steel pipes, characterized in that, Including: Obtain a plurality of raw material sizes, a plurality of first target sizes, and a plurality of roll parameters. Among them, the first target size is the size of the steel pipe rolled by the continuous rolling equipment. The continuous rolling equipment is provided with a plurality of racks arranged in sequence, and each roll parameter corresponds to the roll of one rack. The raw material size is the size of the steel pipe before entering the continuous rolling equipment; Determine the total elongation coefficient of the continuous rolling mill according to the plurality of raw material sizes and the plurality of first target sizes, and determine the first target cross-sectional area of the steel pipe rolled by the rack according to the total elongation coefficient and the elongation proportion coefficient of each rack; For each rack, determine the roll gap value and the second target cross-sectional area according to the corresponding roll parameter and the corresponding first target cross-sectional area. Among them, the second target cross-sectional area is determined according to the roll gap value and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within the set range; Determine the outlet speeds of the plurality of racks according to the plurality of second target cross-sectional areas.

2. The method for determining the continuous rolling parameters of steel pipes according to claim 1, characterized in that The step of determining the total elongation coefficient of the continuous rolling mill according to the plurality of raw material sizes and the plurality of first target sizes, and determining the first target cross-sectional area of the steel pipe rolled by the rack according to the total elongation coefficient and the elongation proportion coefficient of each rack includes: Take the cross-sectional area at the entrance of the primary rack determined according to the plurality of raw material sizes as the cross-sectional area at the entrance of the rack; Take the cross-sectional area at the exit of the last rack determined according to the plurality of first target sizes as the cross-sectional area at the exit of the rack; Take the ratio of the cross-sectional area at the entrance of the rack to the cross-sectional area at the exit of the rack as the total elongation coefficient; Multiply the total elongation coefficient by the elongation proportion coefficient of each rack respectively to obtain a plurality of preset elongation coefficients for the racks; Determine the first target cross-sectional area of the steel pipe rolled by the plurality of fixed racks according to the plurality of preset elongation coefficients for the racks and the cross-sectional area at the entrance of the rack, or determine the first target cross-sectional area of the steel pipe rolled by the plurality of fixed racks according to the plurality of preset elongation coefficients for the racks and the cross-sectional area at the exit of the rack.

3. The method for determining the continuous rolling parameters of steel pipes according to any one of claims 1-2, characterized in that The step of, for each rack, determining the roll gap value and the second target cross-sectional area according to the corresponding roll parameter and the corresponding first target cross-sectional area includes: The roll parameters include: roll pass and mandrel diameter; For each rack, perform the following steps respectively: Obtain and initialize the first roll gap value; Determine the intermediate target cross-sectional area by geometric method according to the first roll gap value, roll pass and mandrel diameter; Take the difference between the first target cross-sectional area and the target cross-sectional area as the area difference; If the area difference is within the set range, take the intermediate target cross-sectional area as the second target cross-sectional area and the first roll gap value as the roll gap value of the roll; Otherwise, adjust the first roll gap value according to the area difference and the set range, and jump to the step of determining the intermediate target cross-sectional area by geometric method according to the first roll gap value, roll pass and mandrel diameter.

4. A method for controlling the wall thickness of continuous rolling of steel pipes, characterized in that, Including: Obtain the out-of-tolerance type of the steel pipe wall thickness; If the type of out-of-tolerance is the overall wall thickness deviation, determine a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount, and use the method described in any one of claims 1-3 according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of exit speeds, wherein each stand corresponds to a roll gap value and an exit speed; If the type of out-of-tolerance is the single-side wall thickness deviation, determine a plurality of target stands according to the single-side wall thickness deviation position, adjust the plurality of first target cross-sectional areas according to the single-side wall thickness deviation amount, and use the method described in any one of claims 1-3 according to the adjusted plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of exit speeds, wherein each stand corresponds to a roll gap value and an exit speed.

5. The method for controlling the wall thickness of continuously rolled steel pipes according to claim 4, wherein, The step of determining a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount and using the method described in any one of claims 1-3 according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of exit speeds includes: Take the last stand as the target stand; According to the overall wall thickness deviation amount, determine the first target cross-sectional area of the steel pipe rolled by the target stand; Target stand adjustment step: According to the first target cross-sectional area of the steel pipe rolled by the target stand, use the method described in any one of claims 1-3 to adjust the second target cross-sectional area and the roll gap value of the target stand; According to the adjusted second target cross-sectional area and roll gap value, determine the load of the target stand; If the load of the target stand meets the load threshold, adjust the exit speeds of a plurality of stands according to the second target cross-sectional area of the target stand, and adjust a plurality of stands according to the adjusted exit speeds of the plurality of stands and the adjusted gap values; Otherwise, take the difference between the load of the target stand and the load threshold as the load difference, determine the gap value of the target stand according to the load difference, take the previous stand of the target stand as the target stand, determine the first target cross-sectional area of the target stand according to the load difference, and jump to the target stand adjustment step.

6. The wall thickness control method for tandem rolling of steel pipes according to claim 4, characterized in that, The step of determining a plurality of first target cross-sectional areas according to the overall wall thickness deviation amount and using the method described in any one of claims 1-3 according to the plurality of first target cross-sectional areas to determine a plurality of roll gap values and a plurality of exit speeds includes: Adjust the first target cross-sectional areas of the steel pipes rolled by a plurality of stands according to the initial load distribution ratios of the plurality of stands; According to the adjusted first target cross-sectional areas of the steel pipes rolled by a plurality of stands, use the method described in any one of claims 1-3 to adjust the second target cross-sectional area and the roll gap value of each stand; Load calculation step: For each stand, determine the stand load according to the adjusted second target cross-sectional area and roll gap value; If there is a rack load greater than the load threshold, find the rack with the minimum load based on the multiple rack loads, increase the load of the rack with the minimum load, adjust the first target cross-sectional area of the steel pipes rolled by the multiple racks according to the new load ratio, and use the method described in any one of claims 1-3 based on the adjusted first target cross-sectional area of the steel pipes rolled by the multiple racks to adjust the second target cross-sectional area and the roll gap value of each rack, and jump to the load calculation step; Otherwise, adjust the outlet speeds of the multiple racks according to the multiple adjusted second target cross-sectional areas, and adjust the multiple racks according to the adjusted outlet speeds of the multiple racks and the adjusted gap values.

7. The method for controlling the wall thickness of continuously rolled steel pipes according to any one of claims 4-6, characterized in that The determining of the multiple target racks according to the single-side wall thickness deviation position, adjusting the multiple first target cross-sectional areas according to the single-side wall thickness deviation amount, and determining the multiple roll gap values and the multiple outlet speeds by using the method described in any one of claims 1-3 includes: Select multiple odd-numbered racks or multiple even-numbered racks as the multiple target racks according to the single-side wall thickness deviation position; Adjust the single-side wall thickness adjustment amounts of the multiple target racks according to the initial load distribution ratios of the multiple racks; Cross-sectional area determination step: Adjust the first target cross-sectional area of the steel pipes rolled by the multiple target racks according to the single-side wall thickness adjustment amount; Use the method described in any one of claims 1-3 to adjust the second target cross-sectional area and the roll gap value of each rack according to the adjusted first target cross-sectional area of the steel pipes rolled by the multiple racks; For each target rack, determine the single-side roll gap adjustment amount according to the roll gap value and check the single-side roll gap adjustment amount for limit check; If there is a target rack that does not meet the limit check condition, readjust the single-side wall thickness adjustment amounts of the multiple target racks and jump to the cross-sectional area determination step; Otherwise, adjust the outlet speeds of the multiple racks according to the multiple adjusted second target cross-sectional areas, and adjust the multiple racks according to the adjusted outlet speeds of the multiple racks and the adjusted gap values.

8. A device for determining continuous rolling parameters of steel pipes, characterized in that, A steel pipe tandem rolling parameter determination device for implementing the steel pipe tandem rolling parameter determination method described in any one of claims 1-3, the steel pipe tandem rolling parameter determination device includes: A parameter acquisition module for acquiring multiple raw material dimensions, multiple first target dimensions, and multiple roll parameters, wherein the first target dimension is the dimension of the steel pipe rolled by the tandem rolling equipment, the tandem rolling equipment is provided with multiple racks arranged in sequence, each roll parameter corresponds to the roll of one rack, and the raw material dimension is the dimension of the steel pipe before entering the tandem rolling equipment; A target cross-sectional area determination module for determining the total elongation coefficient of the tandem rolling mill according to the multiple raw material dimensions and the multiple first target dimensions, and determining the first target cross-sectional area of the steel pipe rolled by the rack according to the total elongation coefficient and the elongation ratio coefficient of each rack; A target cross-sectional area adjustment module for, for each rack, determining the roll gap value and the second target cross-sectional area of the roll according to the corresponding roll parameter and the corresponding first target cross-sectional area, wherein the second target cross-sectional area is determined according to the roll gap value and the roll parameter, and the difference between the second target cross-sectional area and the first target cross-sectional area is within a set range; And, An outlet speed determination module, configured to determine the outlet speeds of multiple racks according to multiple second target cross-sectional areas.

9. An electronic device, comprising a memory and a processor, wherein a computer program capable of running on the processor is stored in the memory, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 above are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, the steps of the method according to any one of claims 1 to 7 above are implemented.

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