Sectional type tower drum flange and manufacturing process thereof

Abstract

The invention relates to the technical field of flange manufacturing, in particular to a sectional type tower drum flange and a manufacturing process thereof. After the blank is heated, oil pressing and punching of the blank are completed, and then an annular blank is obtained; heating is conducted, and the annular blank is subjected to ring rolling to the design size according to preset ring rolling parameters; normalizing heat treatment of the ring-shaped blank subjected to ring grinding is completed; the normalized annular blank is subjected to rough turning, finish turning and drilling in sequence, and then a flange is obtained; the flange is cut to obtain a single-section flange; measuring the distance between adjacent drill holes of two cutting surfaces of each single-section flange along two end surfaces of the flange, and sequentially solving a circumferential characteristic deformation rate and an axial characteristic deformation rate; and judging whether the preparation of the single-section flange meets a preset standard or not according to the circumferential characteristic deformation rate. The precision and the yield of the large-diameter thin-wall sectional type tower drum flange are improved.

Description

Technical Field

[0001] The invention relates to the technical field of flange manufacturing, and in particular to a segmented tower flange and a manufacturing process thereof. Background Art

[0002] Flange is an important component for connecting equipment or pipelines. It is usually made of metal, has a circular or rectangular disc structure, and has bolt holes for tight connection with other flanges through bolts. In engineering applications, flanges not only play the role of connection and fixing, but also can withstand certain pressure and temperature to ensure the safe transmission of fluids in the pipeline system. At the same time, the standardized design of flanges makes the connection between different equipment or pipelines simple and reliable, and is widely used in many industries such as petroleum, chemical, machinery, and electricity.

[0003] China's patent application publication number: CN110653580A, discloses a method for processing an offshore wind power flange, including the following steps: S1: smelting, using electric furnace smelting and refining outside the furnace for smelting, casting to form a six-nickel alloy billet; S2: forging, using free forging + ring rolling to forge the six-nickel alloy billet into a flange, with a forging ratio ≥3.5; S3: heat treatment; S4: surface processing, grinding visible defects and rough processing the flange to meet the requirements of flaw detection; S5: ultrasonic non-destructive testing of the flange; S6: finishing and drilling the flange after passing the non-destructive testing; S7: cleaning the flange surface, spraying an anti-corrosion layer on the flange after cleaning; S8: sampling and testing the flange, placing the flange in a closed container filled with seawater for immersion; S9: after the sampling and testing is completed, applying engine oil on the flange surface and packaging it for storage. However, in the prior art, after the flange is manufactured, it is a complete ring, and when it is cut along the center line, it loses the constraint of the surrounding materials, resulting in severe deformation. Summary of the invention

[0004] To this end, the present invention provides a segmented tower flange and a manufacturing process thereof, so as to overcome the problem in the prior art that large-diameter thin-walled segmented tower flanges undergo large deformation after segmentation, resulting in low product precision and low yield.

[0005] In one aspect, the present invention provides a manufacturing process for a segmented tower flange, comprising: Cutting the steel billet raw material into a number of billets according to the billet design size; After heating the blank using a chamber heating furnace, a forging hydraulic press is used to sequentially perform oil pressing and punching of the blank to obtain a ring-shaped blank; After heating the ring-shaped blank, a ring rolling machine is used to roll the heated ring-shaped blank to a designed size according to preset ring rolling parameters, wherein the preset ring rolling parameters include a rolling speed and a feed speed; The ring-shaped blank after the ring rolling is heated to a preset normalizing temperature by using a chamber heating furnace, and then air-cooled to room temperature after being kept at a preset normalizing time; The normalized annular blank is subjected to rough turning, fine turning and drilling in sequence to obtain a flange; Using a band sawing machine to cut the flange at equal angles along a direction parallel to the axis of the flange to obtain a single-segment flange; The distances between the adjacent drilled holes on the two cutting surfaces of each single-segment flange along the two end surfaces of the flange are measured, and the circumferential characteristic deformation rate and the axial characteristic deformation rate are obtained in turn; When it is determined that the preparation of the single-section flange does not meet the preset standard according to the circumferential characteristic deformation rate, a second determination is made as to whether the preparation of the single-section flange meets the preset standard according to the axial characteristic deformation rate, or the reason why the preparation of the single-section flange does not meet the preset standard is determined according to the overall characteristic deformation rate.

[0006] Furthermore, the circumferential characteristic deformation rate is the average of the deformation rate value of the first spacing between the drilled holes adjacent to the two cutting surfaces of the single-segment flange and the deformation rate value of the second spacing, wherein the first spacing is the center distance between the two drilled holes adjacent to the two cutting surfaces on one end surface of the single-segment flange, and the second spacing is the center distance between the two drilled holes adjacent to the two cutting surfaces on the other end surface of the single-segment flange.

[0007] Further, the process of determining that the preparation of the single-segment flange does not meet the preset standard according to the circumferential characteristic deformation rate includes: Comparing the circumferential characteristic deformation rate with a first preset circumferential deformation rate threshold and a second preset circumferential deformation rate threshold respectively; Under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, it is determined that the preparation of the single-section flange does not meet the preset standard; and, under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold and less than the second preset circumferential deformation rate threshold, it is secondary determined whether the preparation of the single-section flange meets the preset standard based on the axial characteristic deformation rate; under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, the reason why the preparation of the single-section flange does not meet the preset standard is determined based on the overall characteristic deformation rate, wherein the overall characteristic deformation rate is the average of the circumferential characteristic deformation rates of each single-section flange constituting the flange.

[0008] Further, whether the preparation of the single-section flange meets the preset standard is determined again according to the axial characteristic deformation rate, wherein if the axial characteristic deformation rate is less than a preset axial deformation rate threshold, it is determined that the preparation of the single-section flange meets the preset standard; If the axial characteristic deformation rate is greater than or equal to the preset axial deformation rate threshold, it is determined that the preparation of the single-section flange does not meet the preset standard, and the drilling rate of the next batch of the annular blanks is reduced according to the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold.

[0009] Furthermore, the axial characteristic deformation rate is determined by the difference between the first spacing and the second spacing of the single-section flange and the center distance between two adjacent boreholes of two to-be-cut surfaces before the single-section flange is cut.

[0010] Furthermore, the reduction range of the drilling rate of the annular blank is positively correlated with the axial deformation rate difference, wherein the axial deformation rate difference is the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold.

[0011] Further, the reasons why the preparation of the single-segment flange does not meet the preset standard are determined according to the overall characteristic deformation rate: If the overall characteristic deformation rate is less than the preset overall deformation rate threshold, it is determined that the reason why the preparation of the single-stage flange does not meet the preset standard is that the normalizing treatment does not meet the standard, and the preset normalizing time of the next batch of annular blanks is increased according to the ratio between the preset overall deformation rate threshold and the overall characteristic deformation rate; If the overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold, it is determined that the reason why the preparation of the single-section flange does not meet the preset standard is that the ring rolling processing does not meet the standard, and the rolling speed of the next batch of ring-shaped billets is reduced according to the ratio between the overall characteristic deformation rate and the preset overall deformation rate threshold.

[0012] Furthermore, several adjustment methods are provided for reducing the rolling speed, and each adjustment method has a different reduction range for the rolling speed.

[0013] Furthermore, under a first preset condition, the heating temperature of the annular blank is increased according to the overall deformation rate difference, and the increase in the heating temperature is positively correlated with the overall deformation rate difference, wherein the overall deformation rate difference is the difference between the overall characteristic deformation rate and a preset overall deformation rate threshold; the first preset condition is to complete the adjustment of the increase in the rolling speed and the adjusted overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold.

[0014] On the other hand, the present invention provides a segmented tower flange manufactured using the manufacturing process, characterized in that the ratio of the outer wall diameter to the wall thickness of the segmented tower flange is greater than 25, and the ratio of the outer wall diameter to the flange height is greater than 8.

[0015] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention obtains the circumferential characteristic deformation rate and axial characteristic deformation rate of the single-segment flange after slitting, as well as the overall characteristic deformation rate, and accurately determines whether the preparation of the single-segment flange meets the preset standards based on the above characteristic deformation values, as well as the process optimization strategy when it does not meet the preset standards, thereby self-learning to adjust the preparation process and ensure the dimensional accuracy and performance of large-diameter thin-walled segmented flanges.

[0016] Furthermore, when the present invention determines that the preparation of the single-section flange does not meet the preset standard based on the circumferential characteristic deformation rate, it secondarily determines whether the preparation of the single-section flange meets the preset standard based on the axial characteristic deformation rate, or determines the reason why the preparation of the single-section flange does not meet the preset standard based on the overall characteristic deformation rate, thereby determining the state and performance of the corresponding segmented flange in a hierarchical manner, optimizing the manufacturing process by flexibly adjusting the manufacturing process parameters, and improving production efficiency and product quality.

[0017] Furthermore, the present invention determines the reason why the preparation of the single-section flange does not meet the preset standard based on the overall characteristic deformation rate, and accurately determines the normalizing treatment or ring rolling treatment and the corresponding process optimization method, thereby reducing the defective rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of a manufacturing process of a segmented tower flange according to an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a segmented tower flange according to an embodiment of the present invention; Figure 3 This is a flow chart of determining whether the preparation of a flange meets a preset standard according to a circumferential characteristic deformation rate according to an embodiment of the present invention; Figure 4 This is a flow chart of determining the reason why the preparation of the flange does not meet the preset standard according to the overall characteristic deformation rate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0021] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, they are respectively a flow chart of a manufacturing process of a segmented tower flange according to an embodiment of the present invention; a schematic structural diagram of a segmented tower flange according to an embodiment of the present invention; a flow chart of an embodiment of the present invention for determining whether the preparation of a flange meets preset standards based on the circumferential characteristic deformation rate; and a flow chart of an embodiment of the present invention for determining the reason why the preparation of a flange does not meet preset standards based on the overall characteristic deformation rate.

[0022] A manufacturing process of a segmented tower flange according to an embodiment of the present invention includes: S1, cutting the steel billet raw material into a plurality of billets according to the billet design size; S2, after heating the blank using a chamber heating furnace, using a forging hydraulic press to sequentially complete oil pressing and punching of the blank to obtain a ring-shaped blank; S3, completing the heating of the ring-shaped blank, and using a ring rolling machine to roll the heated ring-shaped blank to a designed size according to preset ring rolling parameters, wherein the preset ring rolling parameters include a rolling speed and a feed speed; S4, using a chamber heating furnace to heat the ring-shaped blank after the ring rolling to a preset normalizing temperature, keeping the temperature for a preset normalizing time, and then air-cooling to room temperature; S5, performing rough turning, fine turning and drilling on the normalized annular blank in sequence to obtain a flange; S6, using a band sawing machine to cut the flange at equal angles along a direction parallel to the flange axis to obtain a single-segment flange; S7, measuring the distance between the adjacent drilled holes on the two cutting surfaces of each single-segment flange along the two end surfaces of the flange, and obtaining the circumferential characteristic deformation rate and the axial characteristic deformation rate in turn; S8, when it is determined according to the circumferential characteristic deformation rate that the preparation of the single-segment flange does not meet the preset standard, a second determination is made according to the axial characteristic deformation rate whether the preparation of the single-segment flange meets the preset standard, or the reason why the preparation of the single-segment flange does not meet the preset standard is determined according to the overall characteristic deformation rate.

[0023] Specifically, the rolling speed of the rolling ring is 700 r / min, and the heating temperature of the rolling ring is 850° C.-1250° C., and 1100° C. is selected in this embodiment.

[0024] Specifically, the normalizing parameters in this embodiment are a preset normalizing temperature of 910° C. and a preset normalizing time of 7 hours. The normalizing parameters and the holding time vary according to different product structures, and the holding time is not specifically limited.

[0025] Specifically, see Figure 2 The circumferential characteristic deformation rate is the average of the deformation rate value of the first spacing of the boreholes adjacent to the two cutting surfaces of the single-segment flange and the deformation rate value of the second spacing, wherein the first spacing is the center distance between the two boreholes adjacent to the two cutting surfaces on one end surface of the single-segment flange. Figure 2 The first spacing is L1, and the second spacing is the center distance between the two holes adjacent to the two cutting surfaces on the other end of the single-section flange. Figure 2 The second distance in the middle is L2; The circumferential characteristic deformation rate is calculated by the following formula: , in the formula, is the circumferential characteristic deformation rate, L1 is the first spacing, L2 is the second spacing, and L is the center distance between two adjacent drilled holes on the two to-be-cut surfaces before the single-section flange is cut.

[0026] Specifically, the process of determining whether the preparation of the single-segment flange meets the preset standard according to the circumferential characteristic deformation rate includes: The circumferential characteristic deformation rate is compared with a first preset circumferential deformation rate threshold of 3% and a second preset circumferential deformation rate threshold of 5% respectively; Under the condition that the circumferential characteristic deformation rate is less than the first preset circumferential deformation rate threshold, it is determined that the preparation of the single-section flange meets the preset standard; under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, it is determined that the preparation of the single-section flange does not meet the preset standard; and, under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold and less than the second preset circumferential deformation rate threshold, it is secondary determined whether the preparation of the single-section flange meets the preset standard based on the axial characteristic deformation rate; under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, the reason why the preparation of the single-section flange does not meet the preset standard is determined based on the overall characteristic deformation rate, wherein the overall characteristic deformation rate is the average of the circumferential characteristic deformation rates of each single-section flange constituting the flange.

[0027] Specifically, whether the preparation of the single-section flange meets the preset standard is determined twice according to the axial characteristic deformation rate, wherein if the axial characteristic deformation rate is less than the preset axial deformation rate threshold of 2%, it is determined that the preparation of the single-section flange meets the preset standard; If the axial characteristic deformation rate is greater than or equal to the preset axial deformation rate threshold, it is determined that the preparation of the single-section flange does not meet the preset standard, and the drilling rate of the next batch of the annular blanks is reduced according to the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold.

[0028] Specifically, the axial characteristic deformation rate is calculated by the following formula: , in the formula, is the axial characteristic deformation rate.

[0029] Specifically, the reduction in the drilling rate of the annular blank is positively correlated with the axial deformation rate difference, wherein the axial deformation rate difference is the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold. In this embodiment, the positive correlation is a linear positive correlation or a nonlinear positive correlation, wherein the slope of the linear positive correlation is not specifically limited. It can be understood that the greater the axial deformation rate difference, the greater the reduction in the drilling rate of the annular blank.

[0030] Specifically, the reasons why the preparation of the single-segment flange does not meet the preset standard are determined according to the overall characteristic deformation rate: If the overall characteristic deformation rate is less than the preset overall deformation rate threshold of 7%, it is determined that the reason why the preparation of the single-stage flange does not meet the preset standard is that the normalizing treatment does not meet the standard, and the preset normalizing time of the next batch of annular blanks is increased according to the ratio between the preset overall deformation rate threshold and the overall characteristic deformation rate; If the overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold, it is determined that the reason why the preparation of the single-section flange does not meet the preset standard is that the ring rolling processing does not meet the standard, and the rolling speed of the next batch of ring-shaped billets is reduced according to the ratio between the overall characteristic deformation rate and the preset overall deformation rate threshold.

[0031] Specifically, several adjustment methods are provided for reducing the rolling speed, wherein if the overall deformation rate ratio is less than the first preset overall deformation rate ratio of 1.03, the first rolling speed adjustment coefficient of 0.98 is used to reduce the rolling speed of the next batch of ring-shaped blanks to the corresponding value; If the overall deformation rate ratio is greater than or equal to the first preset overall deformation rate ratio of 1.03 and less than the second preset overall deformation rate ratio of 1.08, the second rolling speed adjustment coefficient of 0.93 is used to reduce the rolling speed of the next batch of ring-shaped blanks to the corresponding value; If the overall deformation rate ratio is greater than or equal to the second preset overall deformation rate ratio, the rolling speed of the next batch of ring-shaped blanks is reduced to a corresponding value using the third rolling speed adjustment coefficient of 0.82; The overall deformation rate ratio is a ratio between the overall characteristic deformation rate and the preset overall deformation rate threshold.

[0032] Specifically, under the first preset condition, the heating temperature of the annular blank is increased according to the overall deformation rate difference, and the increase in the heating temperature is positively correlated with the overall deformation rate difference, wherein the overall deformation rate difference is the difference between the overall characteristic deformation rate and a preset overall deformation rate threshold; the first preset condition is to complete the adjustment of the increase in the rolling speed and the adjusted overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold.

[0033] In an embodiment of the present invention, the ratio of the outer wall diameter to the wall thickness of the segmented tower flange is greater than 25, and the ratio of the outer wall diameter to the flange height is greater than 8. The material of the segmented tower flange is S355NL. The optional range of the outer wall diameter of the segmented tower flange is greater than 3m. The preferred outer wall diameter in the embodiment of the present invention is 5m, but the above values ​​are not limited to this. Technical personnel in this field can also adjust the values ​​according to actual needs.

[0034] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manufacturing process for a segmented tower flange, characterized in that: include: Cutting the steel billet raw material into several billets according to the billet design size; After heating the blank using a chamber heating furnace, a forging hydraulic press is used to sequentially perform oil pressing and punching of the blank to obtain a ring-shaped blank; After heating the ring-shaped blank, a ring rolling machine is used to roll the heated ring-shaped blank to a designed size according to preset ring rolling parameters, wherein the preset ring rolling parameters include a rolling speed and a feed speed; The ring-shaped blank after the ring rolling is heated to a preset normalizing temperature by using a chamber heating furnace, and then air-cooled to room temperature after being kept at a preset normalizing time; The normalized annular blank is subjected to rough turning, fine turning and drilling in sequence to obtain a flange; Using a band sawing machine to cut the flange at equal angles along a direction parallel to the axis of the flange to obtain a single-segment flange; The distances between the adjacent drilled holes on the two cutting surfaces of each single-segment flange along the two end surfaces of the flange are measured, and the circumferential characteristic deformation rate and the axial characteristic deformation rate are obtained in turn; Whether the preparation of the single-section flange meets the standard is determined according to the circumferential characteristic deformation rate, and when it does not meet the preset standard, whether the preparation of the single-section flange meets the preset standard is determined according to the axial characteristic deformation rate, or the reason why the preparation of the single-section flange does not meet the preset standard is determined according to the overall characteristic deformation rate.

2. The manufacturing process of the segmented tower flange according to claim 1 is characterized in that: The circumferential characteristic deformation rate is the average of the deformation rate value of the first spacing between the drilled holes adjacent to the two cutting surfaces of the single-segment flange and the deformation rate value of the second spacing, wherein the first spacing is the center distance between the two drilled holes adjacent to the two cutting surfaces on one end surface of the single-segment flange, and the second spacing is the center distance between the two drilled holes adjacent to the two cutting surfaces on the other end surface of the single-segment flange.

3. The manufacturing process of the segmented tower flange according to claim 2, characterized in that: The process of determining, according to the circumferential characteristic deformation rate, that the preparation of the single-segment flange does not meet the preset standard includes: Comparing the circumferential characteristic deformation rate with a first preset circumferential deformation rate threshold and a second preset circumferential deformation rate threshold respectively; Under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, it is determined that the preparation of the single-segment flange does not meet the preset standard, and, Under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold and less than the second preset circumferential deformation rate threshold, a secondary determination is made based on the axial characteristic deformation rate whether the preparation of the single-section flange meets the preset standard. Under the condition that the circumferential characteristic deformation rate is greater than or equal to the first preset circumferential deformation rate threshold, determining the reason why the preparation of the single-segment flange does not meet the preset standard according to the overall characteristic deformation rate, The overall characteristic deformation rate is the average of the circumferential characteristic deformation rates of the single-segment flanges constituting a single complete flange.

4. The manufacturing process of the segmented tower flange according to claim 3 is characterized in that: According to the axial characteristic deformation rate, it is determined whether the preparation of the single-section flange meets the preset standard, wherein: If the axial characteristic deformation rate is less than a preset axial deformation rate threshold, it is determined that the preparation of the single-section flange meets the preset standard; If the axial characteristic deformation rate is greater than or equal to the preset axial deformation rate threshold, it is determined that the preparation of the single-section flange does not meet the preset standard, and the drilling rate of the next batch of the annular blanks is reduced according to the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold.

5. The manufacturing process of the segmented tower flange according to claim 4, characterized in that: The axial characteristic deformation rate is determined by the difference between the first spacing and the second spacing of the single-section flange and the center distance between two adjacent boreholes of two to-be-cut surfaces before the single-section flange is cut.

6. The manufacturing process of the segmented tower flange according to claim 4, characterized in that: The reduction range of the drilling rate of the annular blank is positively correlated with the axial deformation rate difference, wherein the axial deformation rate difference is the difference between the axial characteristic deformation rate and the preset axial deformation rate threshold.

7. The manufacturing process of the segmented tower flange according to claim 3, characterized in that: The reasons why the preparation of the single-segment flange does not meet the preset standard according to the overall characteristic deformation rate include: If the overall characteristic deformation rate is less than the preset overall deformation rate threshold, it is determined that the reason why the preparation of the single-stage flange does not meet the preset standard is that the normalizing treatment does not meet the standard, and the preset normalizing time of the next batch of annular blanks is increased according to the ratio between the preset overall deformation rate threshold and the overall characteristic deformation rate; If the overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold, it is determined that the reason why the preparation of the single-section flange does not meet the preset standard is that the ring rolling processing does not meet the standard, and the rolling speed of the next batch of ring-shaped billets is reduced according to the ratio between the overall characteristic deformation rate and the preset overall deformation rate threshold.

8. The manufacturing process of the segmented tower flange according to claim 7, characterized in that: The rolling speed of the next batch of annular billets is reduced according to the overall deformation rate ratio, wherein: If the overall deformation rate ratio is less than the first preset overall deformation rate ratio, the first rolling speed adjustment coefficient is used to reduce the rolling speed of the next batch of ring-shaped blanks to a corresponding value; If the overall deformation rate ratio is greater than or equal to the first preset overall deformation rate ratio and less than the second preset overall deformation rate ratio, the rolling speed of the next batch of annular blanks is reduced to a corresponding value using a second rolling speed adjustment coefficient; If the overall deformation rate ratio is greater than or equal to the second preset overall deformation rate ratio, the rolling speed of the next batch of ring-shaped blanks is reduced to a corresponding value using a third rolling speed adjustment coefficient; The overall deformation rate ratio is a ratio between the overall characteristic deformation rate and the preset overall deformation rate threshold.

9. The manufacturing process of the segmented tower flange according to claim 8, characterized in that: Under the first preset condition, the heating temperature of the annular blank is increased according to the overall deformation rate difference, and the increase in the heating temperature is positively correlated with the overall deformation rate difference, wherein the overall deformation rate difference is the difference between the overall characteristic deformation rate and a preset overall deformation rate threshold; the first preset condition is to complete the adjustment of the increase in the rolling speed and the adjusted overall characteristic deformation rate is greater than or equal to the preset overall deformation rate threshold.

10. A segmented tower flange manufactured according to the manufacturing process of a segmented tower flange according to any one of claims 1 to 9, characterized in that: The ratio of the outer wall diameter to the wall thickness of the segmented tower flange is greater than 25, and the ratio of the outer wall diameter to the flange height is greater than 8.

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