Plate rolling and pressing machining method and barrel machining method
By marking, reverse deformation and bending the waist-retraction area of large cylinder plates, the waist-retraction problem that is prone to occur during the processing of the plates is solved, and the quality and accuracy of the plates are improved.
Patent Information
- Application Number
- CN202411953661.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-18
AI Technical Summary
Large cylinder plates are prone to waist-retraction during processing, resulting in excessive data errors in the impact inspection of the processed plates, affecting the roundness and pressure bearing capacity of the cylinder.
By marking, reverse deformation and bending the waist-retraction area of the target board, bending the bent board is formed to improve the waist-retraction problem. The specific steps include bending and testing the test plate, drawing the reverse deformation processing line on the target plate according to the test results, and performing pressing and pre-bending treatment, and finally using a rolling machine to bending.
It effectively solves the problem of waist-lifting of the board and improves the quality of the board processing, so that the actual processing dimensional accuracy of the shell plate is better than the process requirements and the processing accuracy requirements of the equipment.
Smart Images
Figure CN119634513A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building material construction, and in particular to a plate rolling processing method and a cylinder processing method. Background Art
[0002] Large cylinders are usually composed of several plates, and each plate needs to be bent into an arc shape using three-star rollers or four-star rollers according to the size required by the process. For the processing of thick and high-strength steel plates, there has been a long-term waisting phenomenon. The so-called waisting mainly refers to the phenomenon that the plate will be concave at different heights along the arc direction during processing. This phenomenon will cause the data of the plate to be out of tolerance in the impact inspection after processing, thereby affecting the roundness of the large cylinder. The out-of-tolerance roundness will also affect the pressure-bearing capacity of the large cylinder.
[0003] The biggest reason for the waist problem is the processing capacity and processing accuracy of the equipment. Due to the thick thickness and high strength of the plate, the plate is limited by the processing capacity and precision of the equipment, which inevitably causes the waist problem of the plate during the processing. With the continuous development of the industry and the continuous improvement of the quality requirements of the plate, practitioners urgently need an effective technical means to improve the waist of the shell plate to meet the increasingly diverse and high-standard application needs. Summary of the invention
[0004] In the related technology, the sheet metal rolling process is limited by the processing capacity of the equipment and is prone to waist problems.
[0005] In a first aspect, an embodiment of the present application provides a rolling processing method of a plate material, which comprises:
[0006] Mark the waist area of the target plate;
[0007] Performing reverse deformation on the waist region of the target plate;
[0008] The target plate is subjected to bending construction to form a bent plate.
[0009] In combination with the first aspect, in one embodiment, before marking the waist region of the target plate, the method includes:
[0010] Performing bending construction on a test plate to form a test bent plate, wherein the test plate has the same material and size as the target plate;
[0011] The waist region of the test bending plate is inspected to obtain the waist size of the test plate.
[0012] In combination with the first aspect, in one embodiment, the detecting the waist area of the test bending plate to obtain the waist size of the test plate includes: measuring the waist position of the test bending plate and the waist deformation size of the corresponding position.
[0013] In combination with the first aspect, in one embodiment, marking the waist region of the target plate includes:
[0014] An anti-deformation processing line is drawn on the target plate according to the waist position of the test bending plate.
[0015] In combination with the first aspect, in one embodiment, the reverse deformation of the waist region of the target plate includes:
[0016] Determine the anti-deformation size of the anti-deformation processing line area of the target plate according to the waist size of the test plate;
[0017] The deformation processing line area of the target plate is pressed according to the reverse deformation size to form an initial target plate.
[0018] In combination with the first aspect, in one embodiment, pressing the deformation processing line area of the target plate according to the reverse deformation size includes: using a processing mold that meets the reverse deformation size to press the target plate to form the initial target plate.
[0019] In combination with the first aspect, in one embodiment, the bending operation of the target plate to form a bent plate includes:
[0020] Pre-bending the edges of both ends of the initial target plate;
[0021] The side ends and the middle part of the initial target plate are rolled in sequence using a roller rolling machine.
[0022] In combination with the first aspect, in one embodiment, the step of using a roller to bend the side end of the initial target plate includes:
[0023] After centering the initial target plate, the initial target plate is sent into a roll-up machine;
[0024] Determining the pressure of the rolling machine according to the thickness and material characteristics of the initial target plate;
[0025] The roller coiling machine is operated to clamp the side end of the initial target plate and bend and coil it.
[0026] In combination with the first aspect, in one embodiment, the operating roller rolling machine to clamp the side end of the initial target plate includes:
[0027] The upper roller and the lower roller of the roller rolling machine are driven to clamp the initial target plate, and the distance between the clamping point of the upper roller and the lower roller and the side end of the initial target plate is 1.5 times the thickness of the initial target plate.
[0028] In a second aspect, an embodiment of the present application provides a barrel processing method, which includes: a rolling processing method as described in any one of the above items.
[0029] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:
[0030] This application pre-presses and reverses the waist area of the target plate to effectively solve the waist problem of the shell plate, improve the plate processing quality, and make the actual processing size accuracy of the shell plate better than the process requirements and the processing accuracy requirements of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0032] Figure 1 This is a schematic diagram of a process flow of a rolling and pressing method for a plate in one embodiment of the present application;
[0033] Figure 2 This is a top view of the target plate after step S1 in the embodiment of the present application;
[0034] Figure 3 This is a schematic diagram of the pre-bending process of the press in the embodiment of the present application;
[0035] Figure 4 This is a schematic diagram of placing the initial target plate in a roll-up machine in an embodiment of the present application;
[0036] Figure 5 This is a schematic diagram of the bending process of the side end of the initial target plate in the embodiment of the present application;
[0037] Figure 6 This is a schematic diagram of the bending process of the middle part of the initial target plate in the embodiment of the present application;
[0038] Figure 7 This is a schematic diagram of the middle portion of the initial target plate after bending in an embodiment of the present application.
[0039] In the figure: 1, target plate; 11, initial target plate; 3, deformation processing line; 4, upper roller; 5, lower roller; 6, left roller; 7, right roller; 8, press. DETAILED DESCRIPTION
[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0041] In the related technology, the sheet metal rolling process is limited by the processing capacity of the equipment and is prone to waist problems.
[0042] In a first aspect, the present application provides a rolling and pressing method for a plate, which comprises the following steps:
[0043] Step S1, marking the waist area of the target plate 1.
[0044] Specifically, step S1 includes:
[0045] Step S1a, bending the test plate to form a test bent plate, wherein the test plate has the same material and size as the target plate 1.
[0046] It is worth mentioning that in order to accurately understand the parameters of the waistline produced during the sheet rolling construction process, it is necessary to conduct a rolling test with sheets of the same size and material before formal construction to better observe the waistline conditions of similar sheets.
[0047] Step S1b: detecting the waist region of the test bending plate to obtain the waist size of the test plate.
[0048] It is understandable that, as described above, after the rolling test is completed, not only the waist area of the test bending plate needs to be collected, but also the waist deformation size information needs to be collected. Specifically, the waist position of the test bending plate and the waist deformation size at the corresponding position are measured.
[0049] Step S1c: drawing an anti-deformation processing line 3 on the target plate 1 according to the waist position of the test bending plate.
[0050] Specifically, the target plate 1 is evenly divided into 5-7 equal parts, and the longitudinal anti-deformation processing line is drawn according to the waist position obtained in step S1b.
[0051] In some specific embodiments, Figure 2As shown, the main waisting phenomenon of the plate with a width of 1800mm occurs at 250mm away from the plate width and the center line of the plate width. The waisting size at 250mm away from the plate width is about 10mm, and the waisting size at the center line of the plate is about 15mm. Therefore, the anti-deformation area is set at 250mm plate width and the center of the plate width. 400-700mm should be reserved at both ends for head and tail processing before rolling.
[0052] In other specific embodiments, when the plate width is 2500 mm, the reverse deformation at 250 mm is negative 10 mm, and the reverse deformation at the width centerline is negative 30 mm.
[0053] Step S2, performing reverse deformation on the waist region of the target plate 1;
[0054] The above step S2 comprises:
[0055] Step S2a, determining the anti-deformation size of the anti-deformation processing line 3 area of the target plate 1 according to the waist size of the test plate.
[0056] Further, taking the equipment processing characteristics of the factory's four-roll plate rolling machine as an example, the anti-variable star processing examples include:
[0057] In some specific embodiments, Figure 2 As shown, the main waisting phenomenon of the plate with a width of 1800mm occurs at 250mm away from the plate width and the center line of the plate width. The waisting size at 250mm away from the plate width is about 10mm, and the waisting size at the center line of the plate is about 15mm. Therefore, the anti-deformation area is set at 250mm plate width and the center of the plate width. 400-700mm should be reserved at both ends for head and tail processing before rolling.
[0058] In other specific embodiments, when the plate width is 2500 mm, the reverse deformation at 250 mm is negative 10 mm, and the reverse deformation at the width centerline is negative 30 mm.
[0059] Step S2b: pressing the deformation processing line 3 area of the target plate 1 according to the reverse deformation size to form an initial target plate 11.
[0060] Specifically, the target plate 1 is pressed by a processing mold that meets the reverse deformation size to form the initial target plate 11 .
[0061] It should be noted that when using a processing mold to press and reverse deformation, the pressing depth gradually increases from the upper and lower openings to the center part, and the depth of the upper and lower ends is not less than 10mm. During the pressing process, it is controlled to remain vertical and not twisted.
[0062] Step S3, pre-bending the edges of both ends of the initial target plate 11.
[0063] Specifically, Figure 3 As shown, before roll forming, the remaining straight edges of the target plate 1 at the leading and trailing edges need to be pre-bent, so that the remaining straight edges are bent to the required curvature radius and then rolled. After the target plate 1 is hung on the upper and lower molds, the upper mold is pressed down to bend the shell plate. The leading and trailing edges of the target plate 1 of 400-700 mm are pre-bent according to the above method to ensure that the rolling process is completed in one go.
[0064] Step S4: using a roller roll machine to roll the side end of the initial target plate 11.
[0065] The above step S4 comprises:
[0066] Step S4a, after the initial target plate 11 is centered, Figure 4 As shown, the initial target plate 11 is fed into a roll-up machine.
[0067] It is understandable that the purpose of plate centering is to prevent the plate from sliding and deviating during the rolling process.
[0068] Specifically, Figure 4 As shown, the left roller 6 is raised along the track so that the center line of the roller is within the opening height of the upper roller 4 and the lower roller 5, and then the lower roller 5 is raised so that the distance between its generatrix and the generatrix below the upper roller 4 is slightly larger than the working thickness, and then the right roller 7 is operated so that its upper generatrix and the lower roller 5 are on the same horizontal plane, the upper roller 4 is rotated, and the steel plate is fed in so that the end of the steel plate is in full contact with the left roller 6 for alignment, and then the left roller 6 is lowered to its original position.
[0069] Step S4b: determining the pressure of the rolling machine according to the thickness and material characteristics of the initial target plate 11.
[0070] Step S4c, operating the roller to clamp the side end of the initial target plate 11 and bend it.
[0071] Specifically, according to the thickness and material of the steel plate, the pressure of the circuit of the lower roller 5 is adjusted to a value within the range of 2-3 MPa, the lower roller 5 is operated to rise and clamp the steel plate, the upper roller 4 is started to rotate, and when the steel plate moves to the bending position, the upper roller 4 stops rotating. The upper roller 4 and the lower roller 5 of the roll rolling machine are driven to clamp the initial target plate 11, and the distance between the clamping point of the upper roller and the lower roller and the side end of the initial target plate 11 is 1.5 times the thickness of the initial target plate 11.
[0072] It is understood that at this time, the left end of the center line of the upper and lower rollers should have a necessary clamping length of about 1.5 times the thickness of the plate. Raise the rear side roller to process the end of the steel plate.
[0073] Furthermore, after the left end is pre-bent, the rear roller is lowered to its original position, the upper roller 4 is started, and when the initial target plate 11 moves to the above-mentioned bending position, the upper roller 4 stops rotating and the front roller is operated to rise to the other end of the initial target plate 11.
[0074] Step S5: using a roller roll machine to roll the middle portion of the initial target plate 11.
[0075] Specifically, Figure 6 As shown, adjust the front and rear side rollers to the initial bending position specified by the process, start the upper roller to rotate, and bend the middle part of the steel plate. The initial bending can be performed several times to form the following Figure 7 As shown, the formed sheet material.
[0076] In a second aspect, the present application provides a cylinder processing method, which includes: a rolling processing method, the rolling processing method includes: a plate rolling processing method, which includes the following steps:
[0077] Step S1, marking the waist area of the target plate 1.
[0078] Specifically, step S1 includes:
[0079] Step S1a, bending the test plate to form a test bent plate, wherein the test plate has the same material and size as the target plate 1.
[0080] It is worth mentioning that in order to accurately understand the parameters of the waistline produced during the sheet rolling construction process, it is necessary to conduct a rolling test with sheets of the same size and material before formal construction to better observe the waistline conditions of similar sheets.
[0081] Step S1b: detecting the waist region of the test bending plate to obtain the waist size of the test plate.
[0082] It is understandable that, as described above, after the rolling test is completed, not only the waist area of the test bending plate needs to be collected, but also the waist deformation size information needs to be collected. Specifically, the waist position of the test bending plate and the waist deformation size at the corresponding position are measured.
[0083] Step S1c: drawing an anti-deformation processing line 3 on the target plate 1 according to the waist position of the test bending plate.
[0084] Specifically, the target plate 1 is evenly divided into 5-7 equal parts, and the longitudinal anti-deformation processing line is drawn according to the waist position obtained in step S1b.
[0085] In some specific embodiments, Figure 2As shown, the main waisting phenomenon of the plate with a width of 1800mm occurs at 250mm away from the plate width and the center line of the plate width. The waisting size at 250mm away from the plate width is about 10mm, and the waisting size at the center line of the plate is about 15mm. Therefore, the anti-deformation area is set at 250mm plate width and the center of the plate width. 400-700mm should be reserved at both ends for head and tail processing before rolling.
[0086] In other specific embodiments, when the plate width is 2500 mm, the reverse deformation at 250 mm is negative 10 mm, and the reverse deformation at the width centerline is negative 30 mm.
[0087] Step S2, performing reverse deformation on the waist region of the target plate 1;
[0088] The above step S2 comprises:
[0089] Step S2a, determining the anti-deformation size of the anti-deformation processing line 3 area of the target plate 1 according to the waist size of the test plate.
[0090] Further, taking the equipment processing characteristics of the factory's four-roll plate rolling machine as an example, the anti-variable star processing examples include:
[0091] In some specific embodiments, Figure 2 As shown, the main waisting phenomenon of the plate with a width of 1800mm occurs at 250mm away from the plate width and the center line of the plate width. The waisting size at 250mm away from the plate width is about 10mm, and the waisting size at the center line of the plate is about 15mm. Therefore, the anti-deformation area is set at 250mm plate width and the center of the plate width. 400-700mm should be reserved at both ends for head and tail processing before rolling.
[0092] In other specific embodiments, when the plate width is 2500 mm, the reverse deformation at 250 mm is negative 10 mm, and the reverse deformation at the width centerline is negative 30 mm.
[0093] Step S2b: pressing the deformation processing line 3 area of the target plate 1 according to the reverse deformation size to form an initial target plate 11.
[0094] Specifically, the target plate 1 is pressed by a processing mold that meets the reverse deformation size to form the initial target plate 11 .
[0095] It should be noted that when using a processing mold to press and reverse deformation, the pressing depth gradually increases from the upper and lower openings to the center part, and the depth of the upper and lower ends is not less than 10mm. During the pressing process, it is controlled to remain vertical and not twisted.
[0096] Step S3, pre-bending the edges of both ends of the initial target plate 11.
[0097] Specifically, Figure 3 As shown, before roll forming, the remaining straight edges of the target plate 1 at the leading and trailing edges need to be pre-bent, so that the remaining straight edges are bent to the required curvature radius and then rolled. After the target plate 1 is hung on the upper and lower molds, the upper mold is pressed down to bend the shell plate. The leading and trailing edges of the target plate 1 of 400-700 mm are pre-bent according to the above method to ensure that the rolling process is completed in one go.
[0098] Step S4: using a roller roll machine to roll the side end of the initial target plate 11.
[0099] The above step S4 comprises:
[0100] Step S4a, after the initial target plate 11 is centered, Figure 4 As shown, the initial target plate 11 is fed into a roll-up machine.
[0101] It is understandable that the purpose of plate centering is to prevent the plate from sliding and deviating during the rolling process.
[0102] Specifically, Figure 4 As shown, the left roller 6 is raised along the track so that the center line of the roller is within the opening height of the upper roller 4 and the lower roller 5, and then the lower roller 5 is raised so that the distance between its generatrix and the generatrix below the upper roller 4 is slightly larger than the working thickness, and then the right roller 7 is operated so that its upper generatrix and the lower roller 5 are on the same horizontal plane, the upper roller 4 is rotated, and the steel plate is fed in so that the end of the steel plate is in full contact with the left roller 6 for alignment, and then the left roller 6 is lowered to its original position.
[0103] Step S4b: determining the pressure of the rolling machine according to the thickness and material characteristics of the initial target plate 11.
[0104] Step S4c, operating the roller to clamp the side end of the initial target plate 11 and bend it.
[0105] Specifically, according to the thickness and material of the steel plate, the pressure of the circuit of the lower roller 5 is adjusted to a value within the range of 2-3 MPa, the lower roller 5 is operated to rise and clamp the steel plate, the upper roller 4 is started to rotate, and when the steel plate moves to the bending position, the upper roller 4 stops rotating. The upper roller 4 and the lower roller 5 of the roll rolling machine are driven to clamp the initial target plate 11, and the distance between the clamping point of the upper roller and the lower roller and the side end of the initial target plate 11 is 1.5 times the thickness of the initial target plate 11.
[0106] It is understood that at this time, the left end of the center line of the upper and lower rollers should have a necessary clamping length of about 1.5 times the thickness of the plate. Raise the rear side roller to process the end of the steel plate.
[0107] Furthermore, after the left end is pre-bent, the rear roller is lowered to its original position, the upper roller 4 is started, and when the initial target plate 11 moves to the above-mentioned bending position, the upper roller 4 stops rotating and the front roller is operated to rise to the other end of the initial target plate 11.
[0108] Step S5: using a roller roll machine to roll the middle portion of the initial target plate 11.
[0109] Specifically, Figure 6 As shown, adjust the front and rear side rollers to the initial bending position specified by the process, start the upper roller to rotate, and bend the middle part of the steel plate. The initial bending can be performed several times to form the following Figure 7 As shown, the formed sheet material.
[0110] In summary, this application pre-presses and reverses the waist area of the target plate, thereby effectively solving the waist problem of the shell plate, improving the plate processing quality, and making the actual processing size accuracy of the shell plate better than the process requirements and the processing accuracy requirements of the equipment. Furthermore, from the overall processing effect of the formed plate, there is no linear continuous waist, only local bumps, which has little effect on the arc length, ensuring the consistency and correctness of the outer arc.
[0111] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0112] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0113] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A rolling and pressing method for a plate, characterized in that: include: Marking the waist region of the target plate (1); Performing reverse deformation on the waist region of the target plate (1); The target plate (1) is subjected to bending construction to form a bent plate.
2. The rolling method according to claim 1, characterized in that: Before marking the waist region of the target plate (1), the process includes: Performing bending construction on a test plate to form a test bent plate, wherein the test plate has the same material and size as the target plate (1); The waist region of the test bending plate is inspected to obtain the waist size of the test plate.
3. The rolling method according to claim 2, characterized in that: The detecting of the waist region of the test bending plate to obtain the waist size of the test plate includes: measuring the waist position of the test bending plate and the waist deformation size of the corresponding position.
4. The rolling method according to claim 3, characterized in that: The step of marking the waist region of the target plate (1) comprises: An anti-deformation processing line (3) is drawn on the target plate (1) according to the waist position of the test bent plate.
5. The rolling method according to claim 4, characterized in that: The reverse deformation of the waist region of the target plate (1) comprises: Determining the anti-deformation size of the anti-deformation processing line (3) area of the target plate (1) according to the waist size of the test plate; The deformation processing line (3) region of the target plate (1) is pressed according to the reverse deformation size to form an initial target plate (11).
6. The rolling method according to claim 5, characterized in that: The step of pressing the deformation processing line (3) region of the target plate (1) according to the reverse deformation size comprises: using a processing mold that conforms to the reverse deformation size to press the target plate (1) to form the initial target plate (11).
7. The rolling method according to claim 6, characterized in that: The step of bending the target plate (1) to form a bent plate comprises: Pre-bending the edges of both ends of the initial target plate (11); A roller rolling machine is used to roll the side ends and the middle part of the initial target plate (11) in sequence.
8. The rolling method according to claim 7, characterized in that: The method of using a roller rolling machine to roll the side end of the initial target plate (11) comprises: After centering the initial target plate (11), the initial target plate (11) is sent into a roll-up machine; Determining the pressure of the rolling machine according to the thickness and material characteristics of the initial target plate (11); The roller rolling machine is operated to clamp the side end of the initial target plate (11) and bend it.
9. The rolling method according to claim 8, characterized in that: The operating roller roll clamps the side end of the initial target plate (11), comprising: The upper roller (4) and the lower roller (5) of the roller rolling machine are driven to clamp the initial target plate (11), and the distance between the clamping point of the upper roller and the lower roller and the side end of the initial target plate (11) is 1.5 times the thickness of the initial target plate (11).
10. A barrel processing method, characterized in that: include: A rolling method as described in any one of claims 1 to 9.