A stainless steel conical bottom processing technology and processing system

Abstract

The application discloses a stainless steel conical bottom machining process and a machining system. Through technical improvement and innovation, the whole stainless steel plate is opened and flattened, multiple devices are used for overall layout, a double-person double-side argon arc rapid welding method is used, and a self-developed opening and flattening device, a rounding device and other devices are used for opening and flattening, film pasting and rounding of the whole steel plate, and a transition fillet forming process is used. In the construction process, the process is constantly improved and practiced, and an effective "stainless steel sheet conical bottom machining system and machining process" is formed. The technical problem of stainless steel sheet conical bottom equipment manufacturing is solved, the construction efficiency is effectively improved, the construction quality is ensured, the construction cost is reduced, the process is successfully applied in many projects, remarkable social and economic benefits are achieved, and the process has a good popularization and application prospect.

Description

Technical Field

[0001] This invention relates to the field of metal processing technology, and in particular to a stainless steel conical bottom processing technology and system. Background Technology

[0002] Storage equipment in the food industry has high requirements for appearance quality and is used in large quantities. Most of the materials used are cold-rolled stainless steel sheets less than 5mm thick, with uniform surface and color. High appearance quality is essential; surface damage is not allowed during construction, otherwise, noticeable "scars" will remain on the surface, affecting the processing. Furthermore, the food industry has high requirements for the cleanliness of the equipment's interior and exterior, allowing no parts that are difficult to clean. Therefore, most equipment adopts a conical structure with straight cylindrical sections, requiring a manufacturing process with rounded transitions, demanding high levels of construction technology.

[0003] Existing conical bottom processing technologies suffer from low efficiency and poor quality due to the thinness of the plates, large production volume, complex processes, and high requirements for appearance and construction techniques, failing to meet the high-quality manufacturing demands of large-volume conical bottom production. Therefore, this invention proposes a stainless steel conical bottom processing technology and system to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a novel stainless steel conical bottom processing technology and system to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a stainless steel conical bottom processing technology, including the following steps:

[0007] S1. Prepare a straight cylindrical section and a cone with a large end diameter that matches the diameter of the straight cylindrical section;

[0008] S2. Transfer the cone to the straight section and make the cone and the straight section coaxial. Use double-sided argon arc welding to weld the large end of the cone to one axial end of the straight section to obtain a stainless steel cone bottom.

[0009] Preferably, step S1 includes:

[0010] Step S11: Roll the cut rectangular steel plate into a straight cylinder with a preset diameter, and weld the longitudinal seam of the straight cylinder together. Apply a protective film to the outer surface of the steel plate of the straight cylinder to obtain the straight cylinder section.

[0011] Step S12: Roll the cut cone-shaped steel plate into a cone-shaped steel cylinder, weld the butt joint of the busbar of the cone-shaped steel cylinder, and perform transition rounding forming on the large end edge of the cone-shaped steel cylinder to obtain the cone.

[0012] Steps S11 and S12 can be performed simultaneously or their order can be interchanged.

[0013] Preferably, in step S12, when preparing the conical steel cylinder, temporary lifting lugs for lifting are set around the small end of the conical steel cylinder, and hand-operated hoists for locking are temporarily and symmetrically set on both sides of the opening of the busbar butt joint of the conical steel cylinder; then the conical steel cylinder is lifted by the lifting device through the temporary lifting lugs so that the conical steel cylinder droops and arcs due to its own weight; then the busbar butt joint of the conical steel cylinder is welded.

[0014] Preferably, in step S1, the cone is formed directly by pulling it with a hand chain hoist.

[0015] Preferably, the stainless steel conical bottom processing method further includes the following steps:

[0016] S3. Polish at least one of the butt welds on the straight section, the butt welds on the cone, and the butt welds of the straight section and the cone.

[0017] This invention proposes a stainless steel conical bottom machining system capable of implementing the above-mentioned stainless steel conical bottom machining process, comprising:

[0018] A leveling and rolling device is used to level and roll steel plates and prepare the straight cylindrical section;

[0019] The welding device includes a welding torch one and a welding torch two. The welding torch one and the welding torch two work together to perform double-sided argon arc rapid welding on the butt joint between the large end of the cone and the straight section, thereby realizing the welding of the large end of the cone and the straight section.

[0020] Preferably, the stainless steel cone bottom processing system further includes a cone edge-turning device for performing transition rounding forming on the edge of the large end of the cone, the cone edge-turning device comprising:

[0021] Base 1;

[0022] Turntable 1 is rotatably mounted on base 1;

[0023] A conical stand is vertically mounted on the turntable, with the smaller end of the conical stand facing upwards and the larger end facing downwards. The conical stand can rotate relative to the base with the turntable. The cone is placed coaxially on the conical stand.

[0024] An active edging mold includes a support, a rotary drive, and an active edging wheel. The support is mounted on a base, the rotary drive is mounted on the support, and the active edging wheel is connected to the output end of the rotary drive. The rim of the active edging wheel has an arc surface for contacting the inner side of the large end edge of the cone.

[0025] The driven swivel mold includes a second support, an orientation adjustment platform, and a driven swivel wheel. The second support is mounted on the first base and located on one side of the first support. The orientation adjustment platform is mounted on the second support. The driven swivel wheel is rotatably connected to the orientation adjustment platform. The orientation adjustment platform can adjust the position of the driven swivel wheel relative to the driving swivel wheel. The rim of the driven swivel wheel has an arc surface II for contacting the outer edge of the large end of the cone. The arc surface II is tangent to the outer edge of the large end of the cone.

[0026] Preferably, the flattening and rolling device includes:

[0027] Base 2;

[0028] Turntable 2 is rotatably mounted on base 2;

[0029] A steel plate coil placement shaft is vertically mounted on the second turntable, and the steel plate coil is used to insert steel plate coils.

[0030] A vertical plate rolling machine is set on one side of the steel plate roll placement shaft and is used to pull the steel plate from the steel plate roll on the steel plate roll placement shaft and roll the pulled-out steel plate into a circle.

[0031] A protective film roll placement shaft is vertically mounted on the second base and located between the steel plate roll placement shaft and the vertical plate rolling machine. The protective film roll placement shaft is located on the outer convex side of the rolling trajectory of the steel plate. The protective film roll is used to insert a protective film roll, which is used to provide a protective film to the outer surface of the steel plate. This allows the protective film to be applied to the outer surface of the steel plate while being pulled out and rolled by the vertical plate rolling machine along with the steel plate, thereby preparing the straight cylindrical section with the protective film applied to its outer surface.

[0032] Preferably, the stainless steel conical bottom processing system further includes a hoisting device capable of transferring the cone onto the straight section.

[0033] Preferably, the stainless steel cone bottom processing system further includes an automatic strip polishing machine for polishing the welds on the stainless steel cone bottom.

[0034] The present invention achieves the following technical effects compared to the prior art:

[0035] This invention, through technological improvements and innovations, utilizes construction techniques such as leveling entire rolls of stainless steel plates, coordinated layout using multiple equipment, and rapid skip-arc welding by two-person argon arc welding. It employs independently developed leveling and rolling devices, edge-spinning devices, and other equipment for leveling, film application, rolling, and rounding transitions of entire rolls of steel plates. Through continuous exploration, practice, and refinement during construction, a set of effective "Stainless Steel Thin Plate Conical Bottom Processing System and Technology" has been developed. This system solves the technical challenges of manufacturing stainless steel thin plate conical bottom equipment, effectively improving construction efficiency, ensuring construction quality, and reducing construction costs. It has been successfully applied in numerous projects, achieving significant social and economic benefits and demonstrating promising prospects for widespread application. Specific beneficial effects are as follows:

[0036] (i) Using whole rolls of steel plates for leveling and multi-equipment layout to reduce steel plate waste.

[0037] (ii) The self-developed leveling and rolling device can complete the leveling, surface film application and rolling of a whole roll of stainless steel sheet in one go, which can effectively improve the work efficiency of the manufacturing process, ensure reliable quality and simple operation.

[0038] (III) A self-made rotary edge device is used to process the cone bottom transition rounded corner. The operation is simple, the processing efficiency is high, and the transition rounded corner is beautiful.

[0039] (iv) The double-sided argon arc welding method is adopted, which results in small welding deformation, fast welding speed, reliable weld quality, beautiful appearance, and good welding environment. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart of the stainless steel conical bottom processing technology disclosed in an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the steel plate layout in the stainless steel cone bottom processing technology disclosed in an embodiment of the present invention;

[0043] Figure 3 This is a front view of the leveling and rolling device in the stainless steel conical bottom processing system disclosed in an embodiment of the present invention;

[0044] Figure 4 This is a top view of the leveling and rolling device in the stainless steel conical bottom processing system disclosed in an embodiment of the present invention;

[0045] Figure 5This is a front view of the cone-shaped edge-turning device in the stainless steel cone bottom processing system disclosed in an embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the double-sided argon arc rapid welding method disclosed in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of the cone forming principle disclosed in an embodiment of the present invention.

[0048] In the figure, the attached figures are labeled as follows:

[0049] 1-Hook;

[0050] 2-Cone; 21-Busline butt joint;

[0051] 3- Temporary lifting lugs;

[0052] 4- Hand-operated chain hoist;

[0053] 5- Flattening and rolling device; 51- Base II; 52- Turntable II; 53- Steel plate roll placement shaft; 54- Steel plate roll; 55- Steel plate; 56- Vertical plate rolling machine; 57- Protective film roll placement shaft; 58- Protective film roll; 59- Protective film;

[0054] 6- Conical edge-spinning device; 61- Base 1; 62- Turntable 1; 63- Conical frame; 64- Support 1; 65- Rotation drive 1; 66- Active edge-spinning wheel; 67- Arc surface 1; 68- Support 2; 69- Front-back adjustment device; 610- Up-down adjustment device; 611- Driven edge-spinning wheel; 612- Arc surface 2;

[0055] 7-Welding torch one;

[0056] 8-Welding torch two. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] Example 1

[0060] This embodiment provides a stainless steel conical bottom processing technology, including step S1, preparing a straight cylindrical section and a cone 2 whose large end diameter is adapted to the diameter of the straight cylindrical section; step S2, transferring the cone 2 onto the straight cylindrical section and making the cone 2 and the straight cylindrical section coaxial, and welding the large end of the cone 2 to one axial end of the straight cylindrical section using a double-sided argon arc rapid welding method to obtain a stainless steel conical bottom.

[0061] In this embodiment, step S1 specifically includes step S11: rolling the cut rectangular steel plate into a straight cylinder with a preset diameter, and welding the longitudinal seam of the straight cylinder together. A protective film 59 is then applied to the outer surface of the steel plate 55 of the straight cylinder to obtain the straight cylinder section. Step S12: rolling the cut conical steel plate into a conical steel cylinder, and welding the generatrix butt joint 21 of the conical steel cylinder together. The edge of the large end of the conical steel cylinder is then rounded to form the cone 2. Steps S11 and S12 can be performed simultaneously or in a different order.

[0062] In this embodiment, the cutting method of the rectangular steel plate of the above-mentioned straight cylindrical section is as follows: after the steel plate 55 comes out of the leveling and rolling device 5, the cutting size is measured from the steel plate 55 according to the diameter of the straight cylinder and the calculation formula of the cylinder circumference unfolded length L=π×(Di+δ). Then, it is cut off with a plasma cutting machine. During the cutting, protective measures should be taken to avoid plasma splashing and sticking to the opposite steel plate 55. After the cutting is completed, the cut surface is polished to expose the metallic luster.

[0063] In this embodiment, during step S12, when preparing the conical steel cylinder, temporary lifting lugs 3 are set around the small end of the conical steel cylinder for lifting, and hand-operated chain hoists 4 are temporarily and symmetrically set on both sides of the opening of the busbar butt joint 21 of the conical steel cylinder for locking. Then, the conical steel cylinder is lifted by the lifting device through the temporary lifting lugs 3, so that the conical steel cylinder droops and arcs due to its own weight. The hand-operated chain hoists 4 cooperate to close the opening of the busbar butt joint 21. After inspection and approval by the arc plate, it is spot-welded firmly to complete the butt welding of the busbar butt joint 21 of the conical steel cylinder, and the cone is formed. The above-mentioned lifting device is preferably a crane equipped with a hook 1.

[0064] When assembling the prepared straight section and cone 2, place a gap piece every 1000mm at the joint. The thickness of the gap piece should be sufficient to ensure the joint gap. At the same time, the four directional generatrices of the upper and lower cylinder sections must be aligned, and the deviation should not exceed 2mm. Use clamps and pins to adjust the misalignment of the joint so that it is evenly distributed along the circumference to prevent local over-standard. After meeting the requirements, perform tack welding and complete the circumferential weld.

[0065] The above-mentioned stainless steel cone bottom processing technology adopts double-sided argon arc rapid welding to weld the straight cylinder section and the cone. It has small welding deformation, fast welding speed, reliable weld quality, beautiful shape, and good welding environment. It can solve the technical problems of existing stainless steel thin plate cone bottom manufacturing technology. At the same time, it can effectively improve construction efficiency, ensure construction quality, and reduce construction costs. This technology has been successfully applied in many projects and has achieved significant social and economic benefits.

[0066] Example 2

[0067] like Figures 3-7 As shown, this embodiment proposes a stainless steel conical bottom processing system capable of implementing the stainless steel conical bottom processing technology described in Embodiment 1. This system includes a leveling and rolling device 5 and a welding device. The leveling and rolling device 5 is used to level and roll the steel plate and prepare a straight cylindrical section. The welding device includes a welding torch 7 and a welding torch 8. The welding torch 7 and welding torch 8 work together to perform double-sided rapid argon arc welding on the butt joint between the large end of the cone 2 and the straight cylindrical section, thus achieving the welding of the large end of the cone 2 to the straight cylindrical section. The welding device is mainly based on a two-person rapid argon arc welding method: during the stainless steel argon arc welding root pass, two welders simultaneously weld on both sides of the workpiece, such as... Figure 6 As shown, by eliminating the need for argon purging on the back of the workpiece, welding efficiency can be significantly improved. Simultaneously, the current, voltage, and welding speed of traditional welding methods are increased, and welding is performed simultaneously in the same direction. This device utilizes the arc effect of the double-sided welding torch to create an upward and inward supporting force, which, together with the surface tension of the molten pool, supports the molten pool, preventing it from flowing downwards and resulting in a perfect weld. In this scheme, the double-sided argon arc rapid welding method simultaneously increases the current, voltage, and welding speed, thus ensuring minimal welding deformation while significantly increasing welding speed, resulting in aesthetically pleasing welds.

[0068] In this embodiment, the stainless steel conical bottom processing system also includes a conical edge-turning device 6 for performing transition rounding forming on the large end edge of the conical body 2, such as... Figure 5As shown, the conical edging device 6 includes a base 61, a turntable 62 rotatably mounted on the base 61; a conical frame 63 is vertically mounted on the turntable 62, with its small end facing upwards and its large end facing downwards, and the conical frame 63 can rotate relative to the base 61 with the turntable 62; the conical frame 63 is used to coaxially place the cone 2; the active edging mold includes a bracket 64, a rotary drive 65, and an active edging wheel 66, the bracket 64 is mounted on the base 61, the rotary drive 65 is mounted on the bracket 64, and the active edging wheel 66 is connected to the output end of the rotary drive 65. The rim has an arc surface 67 for contacting the inner side of the large end edge of the cone 2; the driven swivel mold includes a support 68, an orientation adjustment table and a driven swivel wheel 611. The support 68 is mounted on the base 61 and is located on one side of the support 64; the orientation adjustment table is mounted on the support 68, and the driven swivel wheel 611 is rotatably connected to the orientation adjustment table. The orientation adjustment table can adjust the position of the driven swivel wheel 611 relative to the active swivel wheel 66. The rim of the driven swivel wheel 611 has an arc surface 612 for contacting the outer side of the large end edge of the cone 2. The arc surface 612 is tangent to the outer side of the large end edge of the cone 2. The aforementioned orientation adjustment platform preferably includes a front-to-back adjustment device 69 and a vertical adjustment device 610 mounted on the front-to-back adjustment device 69. The front-to-back adjustment device 69 is mounted on a support 68 and can drive the vertical adjustment device 610 to move back and forth, allowing the vertical adjustment device 610 to move closer to or further away from the active spinning mold. The driven spinning wheel 611 is connected to the vertical adjustment device 610, which drives the driven spinning wheel 611 to rise and fall. The front-to-back adjustment device 69 and the vertical adjustment device 610 work together to form a two-dimensional adjustment platform, mainly used to adjust the orientation of the driven spinning wheel 611 relative to the active spinning wheel 66. Both the front-to-back adjustment device 69 and the vertical adjustment device 610 can preferably be linear telescopic mechanisms, such as telescopic cylinders or electric slides.

[0069] In this embodiment, as Figure 3 and Figure 4As shown, the leveling and rolling device 5 includes a base 2 51, a turntable 2 52 rotatably mounted on the base 2 51; a steel plate coil placement shaft 53 is vertically arranged on the turntable 2 52, and a steel plate coil 54 is inserted into the steel plate coil placement shaft 53; a vertical plate rolling machine 56 is arranged on one side of the steel plate coil placement shaft 53, and is used to pull the steel plate 55 of the steel plate coil 54 on the steel plate coil placement shaft 53 out of the steel plate coil 54, and roll the pulled-out steel plate 55 into a circle; a protective film coil placement shaft 57 is vertically arranged on the base. The protective film roll placement shaft 57 is located on the outer convex side of the rolling trajectory of the steel plate 55, and is used to insert the protective film roll 58. The protective film roll 58 is used to provide a protective film 59 to the outer surface of the steel plate 55, so that the protective film 59 is applied to the outer surface of the steel plate 55 while being pulled out and rolled by the vertical rolling machine 56 along with the steel plate 55, so as to prepare a straight section with the protective film 59 on the outer surface.

[0070] In this embodiment, the stainless steel conical bottom processing system also includes a lifting device capable of transferring the cone 2 onto the straight section. The lifting device is preferably a crane, and temporary lifting lugs 3 for lifting should also be provided around the small end of the cone 2.

[0071] In this embodiment, the stainless steel cone bottom processing system also includes an automatic strip polishing machine for polishing the welds on the stainless steel cone bottom.

[0072] The following section provides a detailed explanation of the construction steps for implementing the stainless steel cone bottom machining process using a specific example. Figure 1 As shown:

[0073] 1. Construction Preparation

[0074] Steel plate layout: For a large number of cone-shaped containers (conical type 2), the layout cannot be based on the container size of one unit. It should be considered holistically, meaning straight sections should be laid out together as straight sections, and cone-shaped containers (conical type 2) should be laid out together as cone-shaped containers (conical type 2). Since steel plate 55 is directly cut from steel plate coil 54, the unfolded length of the cylinder should be calculated, with one steel plate 55 per section of cylinder. For cone-shaped containers (conical type 2), the coiled plate can be considered as an infinitely long steel plate 55, thus reducing edge and corner losses due to plate width. If the layout is done in pairs, edge and corner losses will be incurred. However, with an infinitely long coiled plate, the plates can be interleaved, such as... Figure 2 As shown, this can reduce the loss of steel plate 55 and save materials.

[0075] 2. Straight-rolled

[0076] The steel plate coil 54 is hoisted and inserted into the steel plate coil placement shaft 53. The protective film coil 58 is inserted into the protective film coil placement shaft 57. The protective film 59 is 200mm narrower than the steel plate 55. The placement position of the protective film 59 is adjusted to ensure that it is aligned with the steel plate 55 of the steel plate coil 54. First, the steel plate 55 is pulled out from the steel plate coil 54 by hand-operated hoist, and the end of the steel plate 55 is inserted into the coil shaft of the vertical plate rolling machine 56. At the same time, the protective film 59 is pulled out and flattened onto the outer surface of the steel plate 55, leaving 100mm on each side of the steel plate 55. Then, after adjusting the rolling radius, the vertical plate rolling machine 56 is started to roll. At this time, the steel plate 55 is automatically pulled out from the steel plate coil 54. As the steel plate 55 moves forward slowly, the protective film 59 automatically follows and adheres tightly.

[0077] During the above-mentioned straight section rolling process, after the steel plate 55 comes out of the leveling and rolling device, the blanking size is measured from the steel plate 55 according to the diameter of the straight cylinder and the calculation formula of the cylinder circumference unfolded length L=π×(Di+δ). Then, it is cut off with a plasma cutting machine. During the cutting, protective measures should be taken to avoid plasma splashing and sticking to the opposite steel plate 55 surface. After the cutting is completed, the cut surface is polished to expose the metallic luster.

[0078] 3. Cone 2 forming

[0079] After the pre-cut cone-shaped steel plates are assembled, the cone 2 forming process is carried out. Generally, a plate rolling machine is used for rolling; however, for cones 2 with thinner walls and larger diameters, a hand-operated hoist can be used for direct forming. During forming, temporary lifting lugs 3 are symmetrically set around the small end for lifting, and temporary locking lugs 3 are also symmetrically set on both sides of the opening of the busbar joint 21 (these temporary lifting lugs 3 are mainly used to install the subsequent hand-operated hoist 4). The cone 2 is lifted by a crane, and due to its own weight, it droops and forms an arc. The hand-operated hoist 4 assists in closing the busbar joint 21. After inspection and approval with an arc-shaped plate, it is tack-welded firmly, completing the joint welding, and the cone 2 is thus formed.

[0080] 4. Cone with 2 spiral edges

[0081] The edge-forming process of the large end of the cone 2 is performed using the aforementioned cone edge-forming device 6. The pre-made cone 2 is placed upside down on the cone-shaped support 63. The driven edge-forming wheel 611 is adjusted by the orientation adjustment table so that the arc surface 612 of the driven edge-forming wheel 611 is pressed against the rounded bottom of the cone 2. Then, the driving edge-forming wheel 66 is driven to rotate, causing the cone 2 to rotate. While the driving edge-forming wheel 66 is rotating, the driven edge-forming wheel 611 is adjusted so that it gradually presses against the driving edge-forming wheel 66. Through the continuous pressing of the driven edge-forming wheel 611, the edge of the large end of the cone 2 is bent to form a rounded transition corner, thus completing the edge-forming process of the cone 2. After multiple rotations of the cone 2 by the driving edge-forming wheel 66, the edge-forming process of the cone 2 is completed.

[0082] 5. Cylinder assembly

[0083] When assembling the prepared straight section and cone 2, place a gap piece every 1000mm at the joint. The thickness of the gap piece should be sufficient to ensure the joint gap. At the same time, the four directional generatrices of the upper and lower cylinder sections must be aligned, and the deviation should not exceed 2mm. Use clamps and pins to adjust the misalignment of the joint so that it is evenly distributed along the circumference to prevent local over-standard. After meeting the requirements, perform tack welding and complete the circumferential weld.

[0084] 6. Grinding the weld seam

[0085] Polishing is performed on at least one of the butt welds on the straight section, the butt welds on the cone 2, and the butt welds between the straight section and the cone 2. Generally, an automatic strip polishing machine is used for strip polishing of the welds, which is highly efficient and produces neat and aesthetically pleasing results.

[0086] Addressing the challenges of producing thin-plate conical-bottom stainless steel sheets, including large quantities, complex processes, and high requirements for appearance and construction techniques, this invention addresses these issues through technological improvements and innovations. It utilizes methods such as leveling entire rolls of stainless steel sheets, coordinated multi-equipment layout, and double-sided argon arc welding. Employing independently developed leveling and rolling devices and edge-spinning devices, the invention performs leveling, film application, rolling, and corner rounding of entire rolls of steel sheets. Through continuous exploration, practice, and refinement during construction, a set of effective "stainless steel thin-plate conical-bottom processing systems and technologies" has been developed. This system solves the manufacturing challenges of stainless steel thin-plate conical-bottom equipment, effectively improves construction efficiency, ensures construction quality, and reduces construction costs. Successful application in multiple projects has yielded significant social and economic benefits, demonstrating promising prospects for wider application. Specific beneficial effects are as follows:

[0087] (i) Use whole rolls of steel plate to cut and level, and use multiple equipment to arrange the layout in a coordinated manner to reduce steel plate waste.

[0088] (ii) The self-developed leveling and rolling device can complete the leveling, surface film application and rolling of a whole roll of stainless steel sheet 55 in one go, which can effectively improve the work efficiency of the manufacturing process, ensure reliable quality and simple operation.

[0089] (III) A self-made rotary edge device is used to process the cone bottom transition rounded corner. The operation is simple, the processing efficiency is high, and the transition rounded corner is beautiful.

[0090] (iv) The double-sided argon arc welding method is adopted, which results in small welding deformation, fast welding speed, reliable weld quality, beautiful appearance, and good welding environment.

[0091] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A stainless steel conical bottom machining process, implemented using a stainless steel conical bottom machining system, characterized in that, The stainless steel conical bottom processing system includes a welding device, a leveling and rolling device for rolling and flattening steel plates to prepare straight cylindrical sections, and a conical edge-turning device for forming the transition rounded corners of the large end edge of the cone, wherein: The welding device includes a welding torch one and a welding torch two. The welding torch one and the welding torch two work together to perform double-sided argon arc rapid welding on the butt joint between the large end of the cone and the straight section, thereby achieving the welding of the large end of the cone and the straight section. The conical edge-spinning device includes: Base 1; Turntable 1 is rotatably mounted on base 1; A conical stand is vertically mounted on the turntable, with the smaller end of the conical stand facing upwards and the larger end facing downwards. The conical stand can rotate relative to the base with the turntable. The cone is placed coaxially on the conical stand. An active edging mold includes a support, a rotary drive, and an active edging wheel. The support is mounted on a base, the rotary drive is mounted on the support, and the active edging wheel is connected to the output end of the rotary drive. The rim of the active edging wheel has an arc surface for contacting the inner side of the large end edge of the cone. The driven swivel mold includes a second support, an orientation adjustment platform, and a driven swivel wheel. The second support is mounted on the first base and located on one side of the first support. The orientation adjustment platform is mounted on the second support, and the driven swivel wheel is rotatably connected to the orientation adjustment platform. The orientation adjustment platform can adjust the position of the driven swivel wheel relative to the driving swivel wheel. The rim of the driven swivel wheel has an arc surface two for contacting the outer edge of the large end of the cone. The arc surface two is tangent to the outer edge of the large end of the cone. The leveling and rolling device includes: Base 2; Turntable 2 is rotatably mounted on base 2; A steel plate coil placement shaft is vertically mounted on the second turntable, and the steel plate coil is used to insert steel plate coils. A vertical plate rolling machine is set on one side of the steel plate roll placement shaft and is used to pull the steel plate from the steel plate roll on the steel plate roll placement shaft and roll the pulled-out steel plate into a circle. A protective film roll placement shaft is vertically mounted on the second base and located between the steel plate roll placement shaft and the vertical plate rolling machine. The protective film roll placement shaft is located on the outer convex side of the rolling trajectory of the steel plate. The protective film roll is used to insert a protective film roll, which is used to provide a protective film to the outer surface of the steel plate. This allows the protective film to be applied to the outer surface of the steel plate while being pulled out and rolled by the vertical plate rolling machine along with the steel plate, thereby preparing the straight cylindrical section with the protective film applied to its outer surface. The stainless steel conical bottom processing technology includes the following steps: S1. Prepare a straight cylindrical section and a cone with a large end diameter that matches the diameter of the straight cylindrical section; Step S1 includes: Step S11: Roll the cut rectangular steel plate into a straight cylinder with a preset diameter, and weld the longitudinal seam of the straight cylinder together. Apply a protective film to the outer surface of the steel plate of the straight cylinder to obtain the straight cylinder section. Step S12: Roll the cut conical steel plate into a conical steel cylinder, and weld the busbar joint of the conical steel cylinder. Round the edge of the large end of the conical steel cylinder to form the cone. When preparing the conical steel cylinder, set temporary lifting lugs around the small end of the conical steel cylinder, and temporarily symmetrically set locking hand-operated hoists on both sides of the opening of the busbar joint of the conical steel cylinder. Then, the lifting device lifts the conical steel cylinder through the temporary lifting lugs, causing the conical steel cylinder to droop and arc under its own weight. Finally, weld the busbar joint of the conical steel cylinder. S2. Transfer the cone to the straight section and make the cone and the straight section coaxial. Use double-sided argon arc welding to weld the large end of the cone to one axial end of the straight section to obtain a stainless steel cone bottom.

2. The stainless steel conical bottom processing technology according to claim 1, characterized in that, Steps S11 and S12 can be performed simultaneously or their order can be interchanged.

3. The stainless steel conical bottom processing technology according to claim 1, characterized in that, In step S1, the cone is formed directly by pulling it with a hand chain hoist.

4. The stainless steel conical bottom processing technology according to any one of claims 1 to 3, characterized in that, It also includes the following steps: S3. Polish at least one of the butt welds on the straight section, the butt welds on the cone, and the butt welds between the straight section and the cone.

5. The stainless steel conical bottom processing technology according to claim 1, characterized in that, The stainless steel conical bottom processing system also includes a hoisting device that can transfer the cone to the straight section.

6. The stainless steel conical bottom processing technology according to claim 1, characterized in that, The stainless steel cone bottom processing system also includes an automatic strip polishing machine for polishing the welds on the stainless steel cone bottom.

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