Withdrawal and straightening machine arrangement method based on heavy reduction technology

Abstract

The invention provides a withdrawal and straightening machine arrangement method based on a heavy pressure technology, which belongs to the technical field of continuous casting and comprises the following steps of: determining a pressure interval corresponding to the pulling speed of each working condition of the heavy pressure technology; according to the compressible interval corresponding to the pulling speed of each working condition, the length of the compressible interval corresponding to the pulling speed of each working condition is determined; the minimum compressible interval length is selected from the compressible interval lengths corresponding to the pulling speeds of all the working conditions; and the withdrawal and straightening machine is arranged under the condition that the distance between the pressing rollers is smaller than or equal to the minimum length of the pressing interval. The problem that in the prior art, an effective scheme for reducing the number of the withdrawal and straightening machines on the premise of meeting the requirement of the pressing process is lacked for arrangement of the withdrawal and straightening machines independently applied under heavy pressing can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous casting, and more specifically, to a method for arranging a straightening machine based on a heavy pressure-down technology. Background Art

[0002] The continuous casting solidification end reduction technology is an effective technical means to improve the core defects of the billet, and has been widely studied and applied in various billet types. In the past decade, although the light reduction technology at the end of solidification is still being studied and applied, it has gradually developed into heavy reduction (or large reduction) technology, in order to obtain better billet core quality and improve the final product performance.

[0003] At present, the understanding and application of heavy reduction technology are still different, but from the perspective of guiding theory and practical application, heavy reduction technology can be roughly divided into three categories: (1) single-roll heavy reduction, using heavy reduction as an independent technology; (2) increasing the total reduction amount on the basis of light reduction; (3) a combination of light and heavy reduction, using light reduction in the front to improve segregation and heavy reduction in the back to "weld" shrinkage holes and improve the density of the ingot. However, no matter which heavy reduction method is used, the design criteria for the layout of the reduction straightening machine are not given.

[0004] The existing layout of the press-down straightening machine continues the design of light press-down, and no effective solution that can be relied on is given in terms of mechanism and improvement effect. Generally, it is given from several angles: from the process perspective, the roller spacing of the press-down straightening machine is required to be as small as possible, such as 600-800mm. It is believed that a small roller spacing is conducive to continuous press-down and continuous action. However, no feasible design annotations are given. From the equipment perspective, the strength of the straightening machine, the layout of the transmission, the size of the cylinder diameter, the hoisting, etc. should be considered. The roller spacing is generally slightly larger, such as 0.95-1.6m. In principle, the greater the required press-down force, the larger the straightening machine frame, and the larger the roller spacing arrangement; the arrangement of the arc and straightening area requires a slightly larger roller spacing, because the extraction space of the straightening machine should be considered. At present, the roller spacing is determined by the comprehensive process and equipment, but the design limit is not given from the guiding principle, so as to achieve a reasonable integration of process and equipment.

[0005] As described above, in the prior art, the arrangement of the straightening machines used independently under heavy pressure is considered from the perspective of the comprehensive roller spacing of the process and equipment, and its formation is similar to convention, and no design limits are given from the guiding principles. Therefore, for the arrangement of the straightening machines used independently under heavy pressure, there is a lack of an effective solution to reduce the number of straightening machines while meeting the requirements of the pressing process. Summary of the invention

[0006] In view of the above problems, the purpose of the present invention is to provide a method for arranging a straightening machine based on heavy pressure technology, so as to solve the problem in the prior art that there is a lack of an effective solution to reduce the number of straightening machines while meeting the requirements of the pressure reduction process for the arrangement of straightening machines for independent application under heavy pressure.

[0007] The present invention provides a method for arranging a tensioning and leveling machine based on a heavy pressure technology, comprising the following steps:

[0008] Determine the compression range corresponding to the pulling speed of each working condition of the heavy compression technology; wherein the compression range is the range from the starting position of the compression range to the ending position of the compression range;

[0009] According to the compressible interval corresponding to the pulling speed of each working condition, the length of the compressible interval corresponding to the pulling speed of each working condition is determined;

[0010] From the compressible interval lengths corresponding to the pulling speeds of each working condition, select the smallest compressible interval length;

[0011] The tensioning and straightening machine is arranged to ensure that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length.

[0012] In addition, a preferred solution is that the method for determining the starting position of the pressing interval includes:

[0013] The starting position of the depression interval is obtained according to the starting position of the preset center solid phase ratio standard interval.

[0014] In addition, a preferred solution is that the method for determining the end position of the pressing interval includes:

[0015] The end position of the depression interval is obtained according to the end position of the preset center solid phase ratio standard interval.

[0016] In addition, a preferred solution is that the preset central solid phase ratio standard interval is 0.35 to 0.75.

[0017] In addition, a preferred solution is that the determining the length of the compressible interval corresponding to the pulling speed of each working condition according to the compressible interval corresponding to the pulling speed of each working condition comprises:

[0018] Based on the compressible interval corresponding to the pulling speed of each working condition, the length between the end position of the pressing interval and the start position of the pressing interval is taken as the compressible interval length, thereby obtaining the compressible interval length corresponding to the pulling speed of each working condition.

[0019] In addition, a preferred solution is that the minimum compressible interval length selected from the compressible interval lengths corresponding to the pulling speeds of each working condition includes:

[0020] The compressible interval lengths corresponding to the pulling speeds of the various working conditions are sorted in order from small to large, and the smallest compressible interval length is selected from the compressible interval lengths corresponding to the pulling speeds of the various working conditions according to the sorting result.

[0021] In addition, a preferred solution is that, in the process of arranging the tensioning and leveling machine under the condition of ensuring that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length,

[0022] At least one pair of pressing rollers is arranged in the pressing range corresponding to the pulling speed of each working condition.

[0023] In addition, a preferred solution is that in the process of determining the compression range corresponding to the pulling speed of each working condition of the heavy pressure reduction technology,

[0024] The compression range corresponding to each working condition pulling speed is determined in order from small to large; wherein, the larger the working condition pulling speed, the larger the range of the corresponding compression range and the larger the corresponding roller spacing.

[0025] In addition, a preferred solution is that after arranging the tension and leveling machine under the condition of ensuring that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length, the method further comprises:

[0026] During the pressing process of the heavy pressing technology, when two or more pairs of pressing rollers are arranged in the pressing interval corresponding to the selected working condition pulling speed, the pressing roller close to the end position of the pressing interval is selected to perform the heavy pressing.

[0027] In addition, a preferred solution is that, in the process of arranging the tensioning and leveling machine under the condition of ensuring that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length,

[0028] The number of pressing rollers is less than or equal to 5 pairs.

[0029] From the above technical scheme, it can be seen that the arrangement method of the straightening machine based on the heavy pressure technology provided by the present invention first determines the pressing interval corresponding to the pulling speed of each working condition of the heavy pressure technology; and according to the pressing interval corresponding to the pulling speed of each working condition, determines the pressing interval length corresponding to the pulling speed of each working condition; then selects the minimum pressing interval length from the pressing interval length corresponding to the pulling speed of each working condition; and then ensures that the pressing roller spacing is less than or equal to the minimum pressing interval length, and arranges the straightening machine. Therefore, based on the setting of the pressing interval standard, the change of the pressing interval position and the pressing interval length of the comprehensive production working condition is given, and the design principle of the maximum roller spacing of the straightening machine is given, which effectively solves the problem that the existing technology lacks the maximum design standard of the roller spacing of the straightening machine, and the limit design boundary that can ensure the pressing effect cannot be obtained. The present invention avoids the fuzzy requirements for equipment that the roller spacing is as small as possible in the existing technology, and achieves quantitative design. While ensuring the pressing effect, the straightening machine is arranged with the least amount of equipment, thereby effectively reducing the equipment cost of heavy pressure, and then greatly reducing the comprehensive cost of production.

[0030] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more apparent and easily understood.

[0032] Figure 1 The present invention is a flow chart of a method for arranging a tension and leveling machine based on a heavy pressure-down technology according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. However, it is apparent that these embodiments may also be implemented without these specific details.

[0034] In view of the problem that in the above-mentioned prior art, there is a lack of an effective solution to reduce the number of straightening machines for independent application under heavy pressure while meeting the requirements of the pressing process, a method for arranging straightening machines based on heavy pressure technology is proposed.

[0035] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] In order to illustrate the arrangement method of the tension and leveling machine based on the heavy pressure technology provided by the present invention, Figure 1 The flowchart of the method for arranging a tension and leveling machine based on the heavy pressure-down technology according to an embodiment of the present invention is shown.

[0037] like Figure 1 As shown, the method for arranging a tensioning and leveling machine based on the heavy pressure down technology provided by the present invention comprises the following steps:

[0038] Step S1, determining the possible compression range corresponding to the pulling speed of each working condition of the heavy compression technology; wherein the possible compression range is the range from the starting position of the compression range to the ending position of the compression range.

[0039] Specifically, under different working conditions, the steel type and the pulling speed used for the ingot are different. For the same type of steel, different pulling speeds will also lead to different reduction ranges. Therefore, it is necessary to comprehensively consider the reduction ranges corresponding to the pulling speeds under different working conditions. That is, comprehensively consider the reduction ranges corresponding to different steel types and different pulling speeds. According to the steel type and pulling speed range that the casting machine mainly performs reduction, the reduction range standard of the heavy reduction process can be given, so as to determine the reduction range corresponding to the pulling speed of each working condition.

[0040] As a preferred solution of the present invention, the method for determining the starting position of the pressing interval includes:

[0041] The starting position of the depression interval is obtained according to the starting position of the preset center solid phase ratio standard interval.

[0042] Specifically, according to the starting value of the preset center solid phase ratio standard interval and the working condition pulling speed, the temperature model in the prior art can be used to calculate the starting position of the reduction interval corresponding to the working condition pulling speed. Since the temperature model is a commonly used technology in this field, it is not described in detail. In the technical solution of the present invention, it is only necessary to understand that, using the temperature model, according to the starting value of the preset center solid phase ratio standard interval, the starting position of the reduction interval under each working condition pulling speed can be calculated.

[0043] As a preferred solution of the present invention, a method for determining the end position of the pressing interval includes:

[0044] The end position of the depression interval is obtained according to the end position of the preset center solid phase ratio standard interval.

[0045] Specifically, according to the end value of the preset center solid phase ratio standard interval and the working condition pulling speed, the temperature model in the prior art can be used to calculate the end position of the reduction interval corresponding to the working condition pulling speed. For the single heavy reduction technology, the reduction interval can be determined based on the starting position and the end position of the reduction interval.

[0046] As a preferred embodiment of the present invention, the preset standard range of the central solid phase ratio is 0.35 to 0.75.

[0047] Specifically, the preset central solid phase ratio standard interval is obtained based on experimental verification and is a given value in the technical solution of the present invention.

[0048] It should be noted that: in the technical solution of the present invention, the method of the compressible range corresponding to the pulling speed of each working condition of the above-mentioned heavy pressure technology is not unique, and the compressible range corresponding to the pulling speed of different working conditions can also be determined through experience or experiments in actual operation. There are many ways to determine the compressible range corresponding to the pulling speed of each working condition in the art. As long as the compressible range corresponding to the pulling speed of each working condition required in the technical solution can be obtained, the present invention does not make any special limitation on this.

[0049] Step S2: Determine the length of the compression interval corresponding to the pulling speed of each working condition according to the compression interval corresponding to the pulling speed of each working condition.

[0050] Specifically, since the compression intervals corresponding to the pulling speeds of each working condition are different, that is, the starting position and the ending position of the compression interval are different, the corresponding compression interval length is determined for each pulling speed of each working condition, thereby determining the compression interval length corresponding to the pulling speed of each working condition.

[0051] As a preferred solution of the present invention, according to the compressible interval corresponding to the pulling speed of each working condition, determining the length of the compressible interval corresponding to the pulling speed of each working condition includes:

[0052] Based on the compressible interval corresponding to the pulling speed of each working condition, the length between the end position of the pressing interval and the start position of the pressing interval is taken as the compressible interval length, thereby obtaining the compressible interval length corresponding to the pulling speed of each working condition.

[0053] Specifically, the length of the depressible interval is the length between the end position of the depressing interval and the start position of the depressing interval, which can be obtained by subtracting the length coordinates.

[0054] Step S3: Select the minimum compressible interval length from the compressible interval lengths corresponding to the pulling speeds of various working conditions.

[0055] Specifically, the minimum compressible interval length, that is, the shortest compressible interval length, is selected from the compressible interval lengths corresponding to the pulling speeds of each working condition, and is used as a reference for setting the spacing between the pressing rollers in the compressible interval corresponding to the pulling speed of each working condition.

[0056] As a preferred solution of the present invention, the minimum compressible interval length is selected from the compressible interval lengths corresponding to the pulling speeds of various working conditions, including:

[0057] The compressible interval lengths corresponding to the pulling speeds of each working condition are sorted in order from small to large, and the smallest compressible interval length is selected from the compressible interval lengths corresponding to the pulling speeds of each working condition according to the sorting result.

[0058] Specifically, in order to facilitate the selection of the smallest compressible interval length from the compressible interval lengths corresponding to the pulling speeds of various working conditions, the compressible interval lengths corresponding to the pulling speeds of various working conditions may be sorted first.

[0059] Step S4, ensuring that the distance between the pressing rollers is less than or equal to the minimum pressing interval length, and arranging the tensioning and straightening machine.

[0060] Specifically, in the prior art, for the heavy pressure reduction technology, the layout of the straightening machine is determined by the comprehensive consideration of the process and equipment, but similar to the convention, no limit standard for the integration of the two is given. It is generally believed that the smaller the roller spacing, the better, and the requirements for the equipment are vague. Based on this, the present invention provides a solution that can use the least arrangement of straightening machines on the basis of ensuring the process requirements, that is, to ensure that the spacing of the pressing rollers is less than or equal to the minimum length of the pressing interval, and arrange the straightening machine.

[0061] As a preferred solution of the present invention, in the process of arranging the tensioning and straightening machine, under the condition of ensuring that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length,

[0062] At least one pair of pressing rollers is arranged in the pressing range corresponding to the pulling speed of each working condition.

[0063] Specifically, according to the principle of process continuity, it is ensured that there is at least one pair of pressing rollers in the pressing range under any process pulling speed, so as to ensure the continuity of the heavy pressing process and the stability of the pressing effect.

[0064] As a preferred solution of the present invention, in the process of determining the pressing range corresponding to the pulling speed of each working condition of the heavy pressing technology,

[0065] The compression range corresponding to each working condition pulling speed is determined in order from small to large; wherein, the larger the working condition pulling speed, the larger the range of the corresponding compression range and the larger the corresponding roller spacing.

[0066] Specifically, based on the solidification characteristics, as the pulling speed increases, the reduction range increases, and the spacing between the reduction rollers can be appropriately increased.

[0067] As a preferred solution of the present invention, after arranging the tensioning and leveling machine, the following is further included, under the condition that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length:

[0068] During the reduction process of the heavy reduction technology, when two or more pairs of reduction rollers are arranged in the reduction interval corresponding to the selected working speed, the reduction roller close to the end position of the reduction interval is selected to perform the heavy reduction.

[0069] Specifically, the heavy reduction technology is executed according to the "farthest principle", that is, when there are two or more pairs of reduction rollers in the reduction range under a specific working condition, the last pair of reduction rollers is used as the execution reduction under this working condition. That is, the reduction roller close to the end position of the reduction range is selected to perform heavy reduction.

[0070] As a preferred solution of the present invention, in the process of arranging the tensioning and straightening machine, under the condition of ensuring that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length,

[0071] The number of pressing rollers is less than or equal to 5 pairs.

[0072] Specifically, the number of the pressing rollers in the present invention is less than or equal to 5 pairs, and this solution is verified based on actual experiments.

[0073] By first determining the compression interval corresponding to the pulling speed of each working condition of the heavy pressure technology; and according to the compression interval corresponding to the pulling speed of each working condition, determining the compression interval length corresponding to the pulling speed of each working condition; then selecting the minimum compression interval length from the compression interval length corresponding to the pulling speed of each working condition; and then ensuring that the compression roller spacing is less than or equal to the minimum compression interval length, the straightening machine is arranged. Based on the setting of the compression interval standard, the position of the compression interval of the production working condition and the change of the compression interval length are comprehensively considered, and the design principle of the maximum roller spacing of the straightening machine is given, which effectively solves the problem of the lack of the maximum design standard of the roller spacing of the straightening machine in the prior art and the inability to obtain the limit design boundary to ensure the compression effect. The present invention avoids the fuzzy requirements for equipment that the smaller the roller spacing is, the better, which is recognized in the prior art, and achieves quantitative design. While ensuring the compression effect, the straightening machine is arranged with the least amount of tension, thereby effectively reducing the equipment cost of heavy pressure, and then greatly reducing the comprehensive cost of production.

[0074] In order to better explain in detail the arrangement method of the tension and leveling machine based on the heavy pressure technology provided by the present invention, an example is given as follows:

[0075] Example 1

[0076] Taking a 165X165mm square billet casting machine of a steel plant as an example, the main steel grade produced by the casting machine is 82B. Therefore, the drawing and straightening machine (a single-roll drawing and straightening machine is adopted in this embodiment, that is, a drawing and straightening machine is provided with a pair of pressing rollers) is arranged according to the solidification process of the 82B steel grade, and the single-roll heavy pressing technology is used. The pressing range standard is that the center solid phase ratio is 0.4-0.7 as the pressing range. Based on this, the parameter data of the pressing range corresponding to the pulling speed of each working condition in Table 1 are calculated.

[0077]

[0078]

[0079] Table 1

[0080] According to the parameter data of the compression range corresponding to the pulling speed of each working condition in Table 1, the arrangement process of the pulling and straightening machine based on the heavy pressure reduction technology provided by the present invention is as follows:

[0081] The spacing between the pressing rollers of the pressing and straightening machine is less than or equal to the length of the pressing interval, so the maximum spacing between the pressing rollers of the straightening machine cannot exceed 1.6m; according to the principle of process continuity, it is necessary to ensure that there is a pressing and straightening machine (pressing roller) in the pressing interval under any working speed. Therefore, at least one pressing and straightening machine (a pair of pressing rollers) should be arranged in the pressing interval of 2.2m / min pulling speed. In order to be economical and safe, a straightening machine is arranged in the middle position of the corresponding pressing interval, and the position of 14.8m is selected. The position of the first pressing and straightening machine is 14.8m; from the above, it can be seen that the spacing between the pressing rollers cannot exceed 1.6m, and the limit is 1.6m. Therefore, the position of the second pressing and straightening machine is 14.8+1.6=16.4m; because the pressing interval increases with the increase of pulling speed, the spacing between the subsequent pressing rollers can be appropriately increased. For example, the roller spacing after the second pressing and straightening machine is selected as 1.7m, and the position of the third straightening machine is 18.1m.

[0082] In this way, the three straightening machines are arranged at 14.8m, 16.4m and 18.1m, among which 18.1m is also within the maximum downward pulling speed range of 2.6m / min of this casting machine, and also meets the principle of process continuity. Therefore, three straightening machines can meet the design requirements of this casting machine.

[0083] It can be seen from Table 1 that for the pulling speed of 2.6m / min, the second (16.4m position) and third (18.1m position) pull-down straightening machines are both within the push-down range. According to the "farthest principle" of this patent, the third pull-down straightening machine is used for single-roller heavy push-down control.

[0084] The method for arranging the straightening machine provided by the present invention provides a design principle for maximizing the roller spacing. The straightening machine arranged according to the method provided by the present invention is a straightening machine arrangement scheme that uses the least heavy-pressure technology on the basis of satisfying the process effect, which is beneficial to reducing the cost of equipment under heavy pressure and greatly reducing the overall cost of production.

[0085] In the arrangement method of the straightening machine provided by the present invention, it is obvious that the spacing between the press-down rollers can be reduced, similar to the smaller the better, but the equipment cost will be greatly increased. If the roller spacing is reduced, it is obvious that there will be 2 or more straightening machines in the press-down interval under specific pulling speed conditions. At this time, the process can be performed according to the farthest principle in the present invention; that is, in the process of performing the press-down process of the heavy press-down technology, when two or more pairs of press-down rollers are arranged in the press-down interval corresponding to the selected working speed, the press-down roller close to the end position of the press-down interval is selected to perform the heavy press-down.

[0086] The embodiment of the present invention only considers one main steel grade. In a specific engineering design, other steel grades need to be taken into consideration. Therefore, comprehensive processing is required to find the minimum compressible range for all typical working conditions.

[0087] The arrangement method of the straightening machine provided in the present invention mainly considers the process requirements and is also to meet the maximum roller spacing limitations such as continuity in the process, which is conducive to simplifying the equipment. At the same time, it is also necessary to consider and optimize other conditions on the equipment, such as straightening, dragging the billet, etc.

[0088] It should be noted that this embodiment is only for the purpose of explaining in detail the practical application of the method for arranging a straightening machine based on the heavy pressure technology provided by the present invention, and does not limit the technical solution provided by the present invention.

[0089] It can be seen from the above specific implementation methods that the method for arranging a straightening machine based on the heavy pressure technology provided by the present invention first determines the pressurizable interval corresponding to the pulling speed of each working condition of the heavy pressure technology; and according to the pressurizable interval corresponding to the pulling speed of each working condition, determines the pressurizable interval length corresponding to the pulling speed of each working condition; then selects the minimum pressurizable interval length from the pressurizable interval length corresponding to the pulling speed of each working condition; and then arranges the straightening machine under the condition that the pressurizable interval spacing is less than or equal to the minimum pressurizable interval length. Therefore, based on the setting of the pressurizing interval standard, the change of the pressurizable interval position and the pressurizable interval length of the production working condition is comprehensively considered, and the design principle of the maximum roller spacing of the straightening machine is given, which effectively solves the problem that the existing technology lacks the design standard for maximizing the roller spacing of the straightening machine and cannot obtain the limit design boundary to ensure the pressurizing effect. The present invention avoids the fuzzy requirements for equipment that the roller spacing is as small as possible in the existing technology, achieves quantitative design, ensures the pressurizing effect, and uses the least arrangement of the straightening machine, thereby effectively reducing the equipment cost of the heavy pressure, and then greatly reducing the comprehensive cost of production.

[0090] As described above with reference to the accompanying drawings, the arrangement method of the tensioning and straightening machine based on the heavy pressure technology proposed in the present invention is described by way of example. However, those skilled in the art should understand that various improvements can be made to the arrangement method of the tensioning and straightening machine based on the heavy pressure technology proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for arranging a tensioning and leveling machine based on heavy pressure technology, characterized in that: The steps include: Determine the compression range corresponding to the pulling speed of each working condition of the heavy compression technology; wherein the compression range is the range from the starting position of the compression range to the ending position of the compression range; According to the compressible interval corresponding to the pulling speed of each working condition, the length of the compressible interval corresponding to the pulling speed of each working condition is determined; From the compressible interval lengths corresponding to the pulling speeds of each working condition, select the smallest compressible interval length; The tensioning and straightening machine is arranged to ensure that the spacing between the pressing rollers is less than or equal to the minimum pressing interval length.

2. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: The method for determining the starting position of the pressing interval includes: The starting position of the depression interval is obtained according to the starting position of the preset center solid phase ratio standard interval.

3. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: The method for determining the end position of the pressing interval includes: The end position of the depression interval is obtained according to the end position of the preset center solid phase ratio standard interval.

4. The method for arranging a tensioning and leveling machine based on the heavy pressure technology according to claim 2 or 3, characterized in that: The preset central solid phase ratio standard range is 0.35 to 0.

75.

5. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: Determining the length of the compressible interval corresponding to the pulling speed of each working condition according to the compressible interval corresponding to the pulling speed of each working condition comprises: Based on the compressible interval corresponding to the pulling speed of each working condition, the length between the end position of the pressing interval and the start position of the pressing interval is taken as the compressible interval length, thereby obtaining the compressible interval length corresponding to the pulling speed of each working condition.

6. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: The method of selecting the minimum compressible interval length from the compressible interval lengths corresponding to the pulling speeds of various working conditions includes: The compressible interval lengths corresponding to the pulling speeds of the various working conditions are sorted in order from small to large, and the smallest compressible interval length is selected from the compressible interval lengths corresponding to the pulling speeds of the various working conditions according to the sorting result.

7. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: In the process of arranging the tensioning and leveling machine under the condition of ensuring that the distance between the pressing rollers is less than or equal to the minimum pressing interval length, At least one pair of pressing rollers is arranged in the pressing range corresponding to the pulling speed of each working condition.

8. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: In the process of determining the pressing range corresponding to the pulling speed of each working condition of the heavy pressing technology, The compression range corresponding to each working condition pulling speed is determined in order from small to large; wherein, the larger the working condition pulling speed, the larger the range of the corresponding compression range and the larger the corresponding roller spacing.

9. The method for arranging a tension and leveling machine based on the heavy pressure technology according to claim 1 is characterized in that: After arranging the tension and leveling machine under the condition of ensuring that the interval between the pressing rollers is less than or equal to the minimum pressing interval length, the method further includes: During the pressing process of the heavy pressing technology, when two or more pairs of pressing rollers are arranged in the pressing interval corresponding to the selected working condition pulling speed, the pressing roller close to the end position of the pressing interval is selected to perform the heavy pressing.

10. The method for arranging a tension and leveling machine based on the heavy pressure technology according to any one of claim 1, characterized in that: In the process of arranging the tensioning and leveling machine under the condition of ensuring that the distance between the pressing rollers is less than or equal to the minimum pressing interval length, The number of pressing rollers is less than or equal to 5 pairs.

Images