Pitting corrosion resistant roll assembly and stainless steel sheet rolling apparatus and method of use thereof

Abstract

This invention relates to a pitting corrosion resistant strengthening rolling assembly and stainless steel sheet rolling equipment and its usage method, belonging to the field of stainless steel sheet production technology. The equipment includes a frame, sliding side plates, a lower rolling roll, an upper rolling roll, and a conveyor roll. The lower rolling roll and the conveyor roll are connected by synchronous pulleys and synchronous belts, driven by servo motor I to achieve synchronous rotation, completing the conveying and rolling of the sheet. The equipment is equipped with a protective cover and a hot air circulation system. Hot air enters through an air inlet pipe, and is distributed above and below the sheet through a connecting cover and connecting pipes. A servo motor II drives fan blades to enhance the hot air flow. The upper rolling roll is connected by a sliding rectangular plate, and its height is controlled by an adjustment assembly. It gradually moves downwards through the cooperation of a lead screw, a trapezoidal push plate, and a supporting cross plate. An L-shaped plate in the control assembly moves a rack under the push of the sheet, thereby triggering height adjustment through the rotation of gears and the lead screw.

Description

Technical Field

[0001] This invention relates to the field of stainless steel sheet production technology, and in particular to pitting corrosion resistant strengthening rolling components and stainless steel sheet rolling equipment and their usage methods. Background Technology

[0002] Rolling is a crucial process in the production and processing of stainless steel sheets, its purpose being to roll the stainless steel sheets into the required thickness and shape. Traditional stainless steel sheet rolling equipment has many problems.

[0003] In traditional equipment, the power transmission between the conveyor rollers and the rolling rollers is often unstable and inefficient, which can lead to slippage and jamming of the sheet metal during conveying, affecting the quality and efficiency of rolling. For example, some equipment uses simple gear transmission to drive the conveyor rollers and rolling rollers, but gear transmission has backlash. At high speeds, this backlash can cause uneven power transmission, making the conveying speed of the sheet metal unstable.

[0004] Stainless steel sheets require a specific temperature during rolling to ensure their plasticity and rolling quality. However, most traditional equipment lacks a sophisticated heating and hot air circulation system, relying solely on simple heating devices to heat the sheets. This uneven heat distribution can easily lead to localized overheating or undercooling, affecting the rolling process. Furthermore, the lack of an effective hot air circulation system means that the heated air cannot be fully utilized, resulting in energy waste.

[0005] When rolling stainless steel sheets of different thicknesses, the spacing of the rolling rolls needs to be adjusted. In traditional equipment, the rolling rolls are usually adjusted manually, which is cumbersome and difficult to guarantee in terms of accuracy. For example, adjusting the position of the rolling rolls using bolts and nuts requires tightening the bolts multiple times, which is not only inefficient but also prone to errors during adjustment, resulting in uneven thickness of the rolled sheet.

[0006] During the rolling process, the various components of the equipment rotate at high speed, which can easily cause injury to operators. However, the protective devices of traditional equipment are often inadequate. For example, they lack comprehensive protection for the rolling area, and operators may accidentally come into contact with the rotating rolling rolls during operation, causing safety accidents. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies, such as the inflexible and imprecise adjustment of rolling rolls, the difficulty in accurately controlling the synchronization of stainless steel sheet conveying and rolling, and the poor temperature control effect of stainless steel sheet during rolling. The invention proposes a pitting-resistant strengthening rolling component, stainless steel sheet rolling equipment, and its usage method.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A pitting-resistant strengthening rolling assembly includes a frame, a sliding side plate, multiple lower rolling rolls, and multiple upper rolling rolls. The lower rolling rolls rotatably pass through the interior of the sliding side plate, which is slidably connected to one side of the frame. The upper rolling rolls are rotatably connected to the interior of the frame. Multiple conveying rolls are rotatably connected inside the frame, divided into two groups located on either side of the lower rolling rolls. Two synchronous pulleys III are fixedly fitted onto the outer walls of both the lower rolling rolls and the conveying rolls. Two adjacent synchronous pulleys III... The outer wall of the machine is fitted with the same synchronous belt III. A servo motor I is fixedly installed on one side of the frame. The output shaft of the servo motor I and one end of one of the rolling rolls are both fitted with synchronous pulleys I. The outer wall of the two synchronous pulleys I is fitted with the same synchronous belt I. The servo motor I drives the rolling roll to rotate through the synchronous belt I and the synchronous pulley I. The rolling roll drives the other rolling rolls and the conveying roll to rotate synchronously through the synchronous pulley III and the synchronous belt III, so as to realize the conveying and rolling of stainless steel plates.

[0010] A stainless steel sheet rolling equipment includes the pitting corrosion resistant strengthening rolling assembly as described above, and four support legs I. The four support legs I are respectively fixedly installed at the four corners of the bottom of the frame. Support legs II are fixedly installed around the frame. A protective cover II and a protective shell are fixedly installed between the four support legs II. The protective shell is located below the protective cover II. A protective cover I and a protective cover III are fixedly installed on the top of the frame. The protective cover I and the protective cover III are respectively located on both sides of the protective cover II and are connected to the protective cover II. The protective cover II has strip-shaped slots on both sides, which are used in conjunction with the upper roller of the rolling roll. Multiple connecting covers I and connecting covers II are fixedly connected to the bottom of the frame. The bottom of the multiple connecting covers I and connecting covers II are fixedly installed with the same connecting pipe. A connected air inlet pipe is fixedly installed on one side of the top of the protective cover I. A connected exhaust pipe is fixedly installed on one side of the top of the protective cover III.

[0011] Hot air enters through the air inlet pipe, passes through the connecting hood I and the connecting pipe, heats the stainless steel sheet, and is discharged through the exhaust pipe.

[0012] In one possible design, the sliding side plate is slidably connected to the side of the protective cover II. A limiting component is provided on one side of the protective cover II. The limiting component includes two symmetrically arranged fixing blocks fixedly installed on one side of the protective cover II. Two symmetrically arranged connecting blocks are fixedly installed on one side of the sliding side plate. A fixing shaft is fixedly installed inside the fixing block. The fixing shaft slides through the connecting block. A compression spring II is fixedly installed between the top of the connecting block and the bottom of the fixing block. The compression spring II is sleeved on the outside of the fixing shaft.

[0013] In one possible design, a fixing frame is fixedly installed on one inner wall of the frame, and the same sliding rectangular plate is fixedly sleeved on the outer wall of the upper rolls of the plurality of rolling rolls. An adjustment component is provided inside the fixing frame, and the adjustment component is used to adjust the height of the sliding rectangular plate.

[0014] The adjustment component includes rectangular slots II formed on both sides of the fixed frame. Two symmetrically arranged vertical limiting slots are formed on both sides of the fixed frame. A connected horizontal limiting slot is formed on the inner wall of one side of each vertical limiting slot. A strip block is slidably connected inside the horizontal limiting slot. A tension spring II is fixedly installed between one end of the strip block and the inner wall of one side of the horizontal limiting slot. A vertical plate is fixedly installed on one side of the strip block. A side plate II is fixedly installed at the bottom of the vertical plate. Multiple supporting horizontal plates are fixedly installed on one side of the side plate II. A side plate I is fixedly installed at the top of the vertical plate. Multiple pressing protrusions are fixedly installed on one side of the side plate I. Two side plates I and II located on the same side are arranged parallel to each other inside the rectangular slots II. A support plate II is fixedly installed at one end of the sliding rectangular plate. Limiting protrusions are fixedly installed on both sides of the support plate II. The heights of the supporting horizontal plates and pressing protrusions on the same side of the side plates II and I are inconsistent, serving to sequentially support the limiting protrusions.

[0015] In one possible design, a U-shaped sleeve plate is fixedly installed on the top of the fixed frame, a lead screw is rotatably passed through the inside of the U-shaped sleeve plate, an overrunning clutch is fixedly provided on the outer wall of the lead screw, a rotating gear is fixedly provided on the outer wall of the overrunning clutch, a trapezoidal push plate is slidably connected inside the U-shaped sleeve plate, the lead screw thread passes through the trapezoidal push plate, and the trapezoidal push plate is used in conjunction with a plurality of pressing protrusions;

[0016] When the lead screw rotates, it drives the trapezoidal push plate to move. The trapezoidal push plate pushes the pressing protrusion to move the supporting horizontal plate laterally, thereby causing the limiting protrusion to fall and adjusting the height of the upper roller of the rolling roll.

[0017] In one possible design, a fixing box is fixedly installed on one side of the protective cover II, and a control component is provided inside the fixing box. The control component is used to control the downward movement of the sliding rectangular plate.

[0018] The control component includes a sliding plate that slides through the interior of the fixed box. A connecting rod is fixedly inserted through the interior of the sliding plate. A compression spring I is fixedly installed between one side of the sliding plate and one side of the inner wall of the fixed box. A rack is fixedly installed at one end of the connecting rod, and the rack meshes with a rotating gear. A crossbar II is fixedly installed at one end of the connecting rod. A crossbar I is fixedly installed on one side of the crossbar II. A vertical rod is fixedly installed at one end of the crossbar I that slides through the protective cover III. A limit plate is fixedly installed at the bottom of the vertical rod. An L-shaped plate is slidably fitted on the outer wall of the vertical rod. A tension spring I is fixedly installed between the bottom of the L-shaped plate and the top of the limit plate. One bottom side of the L-shaped plate is arc-shaped. Rectangular slots I are opened on both sides of the top of the frame. Rotating door panels are hinged to the bottom of both the protective cover I and the protective cover III. The rotating door panels are used to block the rectangular slots I. Support plates I are fixedly installed at both ends of the frame.

[0019] In one possible design, a servo motor II is fixedly mounted on the top of the protective cover II, and multiple rotating shafts I are rotatably passed through the interior of the protective cover II. Connecting gears are fixedly sleeved on the outer walls of each rotating shaft I, and two adjacent connecting gears mesh with each other. Synchronous pulleys II are fixedly sleeved on the outer walls of the servo motor II and one of the rotating shafts I. The same synchronous belt II is driven by the outer walls of the two synchronous pulleys II. Multiple fan blades are fixedly sleeved on the outer walls of the rotating shafts I.

[0020] The servo motor II drives the rotating shaft I to rotate via the synchronous belt II and the synchronous pulley II. Multiple rotating shafts I rotate synchronously via the connecting gear, which drives the fan blades to blow hot air to enhance the heating effect.

[0021] A method for rolling stainless steel sheet using the stainless steel sheet rolling equipment described above includes the following steps:

[0022] S1. The stainless steel sheet to be rolled is fed into the machine frame through the rotating door plate. The rotating door plate is closed to seal the rolling space. Inert gas is introduced through the air inlet pipe to replace the air in the sealed space. The replacement time is ≥5min to avoid oxidation of the sheet surface during the rolling process.

[0023] S2. Start servo motor I, and drive the rolling roll and conveyor roll to rotate synchronously through synchronous belt I, synchronous pulley I, synchronous pulley III and synchronous belt III, so as to realize the scratch-free conveying and initial rolling of stainless steel sheet;

[0024] S3. A mixture of hot air and inert gas is introduced through the air intake pipe and evenly distributed through the connecting hood I and the connecting pipe to heat the board to 850-1000℃ and keep it at that temperature. Servo motor II is started to drive the fan blades to blow the mixed hot air to ensure that the surface temperature of the board is uniform.

[0025] S4. When the stainless steel sheet pushes the L-shaped plate, the height of the upper roller of the rolling roll is automatically adjusted by the control component and the adjustment component to achieve multi-pass gradient rolling (each pass reduction is 0.1-0.5mm), avoiding stress concentration and surface defects caused by excessive single reduction.

[0026] S5. Roll the stainless steel sheet back and forth multiple times (3-5 times) until the required thickness is achieved. During the rolling process, a mixed gas is continuously introduced. After rolling is completed, inert gas is introduced until the sheet cools to below 300°C to avoid surface oxidation during cooling. Finally, a stainless steel sheet with enhanced pitting resistance is obtained.

[0027] In this application, during use, a rotating door panel on the side is opened, at which time a stainless steel plate can be fed into the device through one side. Servo motor I is started, and the output shaft of servo motor I can drive one of the conveying rollers to rotate through synchronous belt I and synchronous pulley I. At this time, the conveying roller can drive the adjacent conveying rollers and the multiple rolling rollers in the middle to rotate through synchronous pulley III and synchronous belt III. This not only allows the stainless steel plate to be conveyed forward, but also allows the stainless steel plate to be rolled by the rolling rollers and the rolling rollers.

[0028] To ensure the internal temperature of the device, hot air can be introduced through the air intake pipe and transported through multiple connecting hoods I and connecting pipes, so that both the top and bottom of the stainless steel plate can be heated. Finally, the hot air is discharged through the exhaust pipe. At the same time, the servo motor II can be started. The output shaft of the servo motor II drives one of the rotating shafts I to rotate through the synchronous pulley II and the synchronous belt II. Multiple rotating shafts I can rotate synchronously under the connection of the connecting gears, which can blow the hot air to ensure the heating effect.

[0029] Furthermore, when the stainless steel plate is fed in, it will push one side of the curved surface of the L-shaped plate. At this time, the L-shaped plate slides upward on the vertical rod, and the tension spring I is stretched. After the stainless steel plate is fed in, the L-shaped plate moves downward under the tension of the tension spring I. There is no obstruction on the other side. After the stainless steel plate is rolled, it will be sent out normally. After the first rolling, the stainless steel plate moves to the side away from the L-shaped plate.

[0030] At this point, servo motor I is activated, causing its output shaft to reverse, which allows the stainless steel plate to return and continue rolling. When it comes into contact with the L-shaped plate again, it contacts the flat surface of the L-shaped plate, which pushes the vertical rod to move laterally. The vertical rod drives the horizontal rod I and horizontal rod II to move laterally. At this time, horizontal rod II drives the rack to move laterally through the connecting rod. The slide plate moves laterally under the tension of the compression spring I. Then the output shaft of servo motor I reverses again, causing the stainless steel plate to be sent back again. This process is repeated.

[0031] Furthermore, when the rack moves, it can drive the rotating gear to rotate, which in turn drives the lead screw to rotate. The lead screw drives the trapezoidal push plate to move downward. The trapezoidal push plate first pushes two pressing protrusions on one side of one set of side plates I. Side plate I drives the vertical plate and side plate II to move laterally. At this time, the vertical plate drives the strip block to move out of the inside of the limiting horizontal groove, stretching the tension spring II. At this time, side plate II drives the supporting horizontal plate to move laterally, which allows the limiting protrusion to no longer be supported and fall onto the two supporting horizontal plates of another set. This causes the sliding rectangular plate to move downward. The heights of the two sets of supporting horizontal plates are not the same. Each push can only push the supporting horizontal plate of the supported plate downward. After the limiting protrusion falls onto the other set of supporting horizontal plates, another push will push the supporting horizontal plate of that set to move. This process is repeated, allowing the limiting protrusion to gradually fall. The sliding rectangular plate drives multiple rolling rolls to move downward, which makes the stainless steel plate thinner during multiple rolling processes. During the downward movement of the rolling rolls, the sliding side plates can be driven to move downward. Moreover, the rolling rolls move inside the strip groove, so there is no heat loss.

[0032] Beneficial Effects: High Synchronization of Conveying and Rolling: In the stainless steel sheet rolling equipment of this application, the output shaft of servo motor I drives one of the conveying rollers to rotate via synchronous belt I and synchronous pulley I. The conveying roller then drives the adjacent conveying rollers and the multiple intermediate rolling rollers to rotate via synchronous pulley III and synchronous belt III. This transmission method ensures stable and efficient power transmission between the conveying rollers and the rolling rollers, achieving precise synchronization between the conveying and rolling of stainless steel sheets. This effectively avoids problems such as slippage and jamming of the sheet during the conveying process, improving the quality and efficiency of rolling.

[0033] The equipment is equipped with a comprehensive heating and hot air circulation system. Hot air is introduced through an intake duct and distributed to the top and bottom of the stainless steel plate via multiple connecting hoods I and connecting pipes, ensuring uniform heating of the plate. Simultaneously, servo motor II is activated, its output shaft driving rotating shaft I via synchronous pulley II and synchronous belt II. Multiple rotating shafts I rotate synchronously through connecting gears, further dispersing the hot air and ensuring effective heating. This heating and hot air circulation method not only improves the rolling quality of the plate but also makes full use of hot air, reducing energy consumption.

[0034] In the device described in this application, a unique adjustment assembly is used to adjust the height of the upper rolling roll. Through structures such as strip blocks, vertical plates, side plate II, and side plate I within the fixed frame, in conjunction with a lead screw and trapezoidal push plate, the upper rolling roll is gradually lowered. Each push only lowers the supporting horizontal plate, causing the limiting protrusion to fall onto another set of supporting horizontal plates, thus allowing the sliding rectangular plate to gradually lower multiple upper rolling rolls. This adjustment method is simple to operate and offers high precision, meeting the rolling requirements of stainless steel plates of varying thicknesses.

[0035] The equipment is equipped with support legs II around the frame, and protective covers II and protective shells are fixedly installed between the support legs II. Additionally, protective covers I and III are installed on the top of the frame. These protective devices provide comprehensive protection for all critical components of the equipment, effectively preventing operators from coming into contact with rotating parts during operation and reducing the probability of accidents.

[0036] The equipment is equipped with control components that automatically trigger a series of actions when the stainless steel plate is fed in and returns after rolling. The stainless steel plate pushes the L-shaped plate, which in turn moves the rack, which in turn drives the rotating gear, which in turn drives the lead screw, ultimately causing the upper roller of the rolling mill to move downwards. This automated control method reduces manual intervention and improves the level of automation and production efficiency.

[0037] The pitting resistance is specifically enhanced by selecting pitting-resistant materials (duplex stainless steel, 316LMoN) and surface treatments (ceramic coating, electrochemical passivation) for the rolling rolls and conveyor rolls to avoid scratching the passivation film of the plate during rolling. Combined with inert gas protection and precise temperature control heating process, the oxidation and intergranular corrosion of the plate surface are suppressed, the uniformity of the microstructure is optimized, and the pitting sensitivity defects are reduced, ultimately resulting in a significant increase in the pitting potential of the plate. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural schematic diagram of the pitting-resistant reinforced rolling assembly, stainless steel plate rolling equipment, and their usage method proposed in this invention.

[0039] Figure 2 This is a three-dimensional structural diagram from a second perspective of the pitting-resistant strengthening rolling component, stainless steel plate rolling equipment and its usage method proposed in this invention.

[0040] Figure 3 This is a three-dimensional structural diagram of the protective cover II in the pitting-resistant reinforced rolling assembly and stainless steel plate rolling equipment and its usage method proposed in this invention.

[0041] Figure 4 This is a three-dimensional structural diagram of the frame and support leg I in the pitting-resistant reinforced rolling assembly and stainless steel plate rolling equipment and its usage method proposed in this invention;

[0042] Figure 5 This is a three-dimensional structural diagram of the lower rolling roll and the conveying roll in the pitting-resistant strengthening rolling assembly, stainless steel plate rolling equipment and its usage method proposed in this invention.

[0043] Figure 6 This is an exploded view of the L-shaped plate and the fixing box in the pitting-resistant reinforced rolling assembly, stainless steel plate rolling equipment and its usage method proposed in this invention.

[0044] Figure 7 This is a three-dimensional structural diagram of the lower rolling roll and the sliding rectangular plate in the pitting-resistant strengthening rolling assembly, stainless steel plate rolling equipment and its usage method proposed in this invention.

[0045] Figure 8 This is a three-dimensional structural diagram of the sliding rectangular plate and the fixed frame in the pitting-resistant strengthening rolling component and stainless steel plate rolling equipment and their usage method proposed in this invention.

[0046] Figure 9 This is a three-dimensional structural diagram of the fixing frame and U-shaped sleeve plate in the pitting-resistant strengthening rolling component and stainless steel plate rolling equipment and its usage method proposed in this invention.

[0047] Figure 10 This is an exploded view of the side plate II and the U-shaped sleeve plate in the pitting-resistant reinforced rolling assembly and stainless steel plate rolling equipment and its usage method proposed in this invention.

[0048] In the diagram: 1. Support leg I; 2. Frame; 3. Inlet pipe; 4. Protective cover I; 5. Protective cover II; 6. Exhaust pipe; 7. Protective cover III; 8. Connecting cover I; 9. Connecting pipe; 10. Protective shell; 11. Support leg II; 12. Connecting cover II; 13. Sliding side plate; 14. Synchronous pulley I; 15. Rotating door plate; 16. Synchronous belt I; 17. Servo motor I; 18. Rotating shaft I; 19. Fan blade; 20. Strip slot; 21. Connecting gear; 22. Servo motor II; 23. Synchronous pulley II; 24. Synchronous belt II; 25. Connecting rod; 26. Fixing box; 27. Lower rolling roll; 28. Upper rolling roll; 29. ​​Conveyor roll; 30. Rectangular slot I; 31. Support plate I; 32. Synchronous pulley III; 3 3. Synchronous belt III; 34. Rack and pinion; 35. Slide plate; 36. Compression spring I; 37. Vertical rod; 38. Horizontal rod I; 39. Horizontal rod II; 40. L-shaped plate; 41. Tension spring I; 42. Limiting plate; 43. Fixed frame; 44. Fixed shaft; 45. Compression spring II; 46. Fixed block; 47. Connecting block; 48. Overrunning clutch; 49. Sliding rectangular plate; 50. Support plate II; 51. Limiting protrusion; 52. U-shaped sleeve plate; 53. Trapezoidal push plate; 54. Side plate I; 55. Pressing protrusion; 56. Rotating gear; 57. Rectangular slot II; 58. Supporting horizontal plate; 59. Limiting vertical slot; 60. Lead screw; 61. Limiting horizontal slot; 62. Side plate II; 63. Strip block; 64. Vertical plate; 65. Tension spring II. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] In one embodiment: Refer to Figure 1-10This stainless steel sheet rolling equipment mainly consists of a frame 2, sliding side plates 13, multiple lower rolling rolls 27, multiple upper rolling rolls 28, and conveyor rolls 29. The frame 2 is made of high-strength alloy steel to ensure the stability and load-bearing capacity of the overall structure. Four support legs I1 are fixedly installed at the four corners of the bottom of the frame 2 to support the entire equipment. Support legs II11 are fixedly installed around the frame 2, and the same protective cover II5 and the same protective shell 10 are fixedly installed between the four support legs II11, with the protective shell 10 located below the protective cover II5. Protective covers I4 and III7 are fixedly installed on the top of the frame 2. Protective covers I4 and III7 are located on both sides of the protective cover II5 and are connected to it. Strip-shaped slots 20 are opened on both sides of the protective cover II5, which cooperate with the upper rolling rolls 28 to ensure that the upper rolling rolls 28 do not interfere with the protective cover II5 during movement, while also reducing heat loss. The bottom of the frame 2 is fixedly connected to multiple connecting covers I8 and II12. The bottom of the multiple connecting covers I8 and II12 is fixedly installed with the same connecting pipe 9. The top side of the protective cover I4 is fixedly installed with a connected air intake pipe 3. The top side of the protective cover III7 is fixedly installed with a connected exhaust pipe 6. The air intake pipe 3 and the exhaust pipe 6 are made of stainless steel, which has good corrosion resistance and sealing performance.

[0051] Multiple lower rolling rolls 27 rotate through the interior of a sliding side plate 13, which is slidably connected to one side of the frame 2. The sliding side plate 13 is made of wear-resistant cast iron to ensure its wear resistance and stability during sliding. Multiple upper rolling rolls 28 are rotatably connected inside the frame 2. Multiple conveyor rolls 29 are rotatably connected inside the frame 2. The conveyor rolls 29 are divided into two groups and located on both sides of the lower rolling rolls 27. Two synchronous pulleys Ⅲ32 are fixedly fitted on the outer walls of both the lower rolling rolls 27 and the conveyor rolls 29. The same synchronous belt Ⅲ33 is fitted on the outer walls of two adjacent synchronous pulleys Ⅲ32. The synchronous belt Ⅲ33 realizes the power transmission between the conveyor rolls 29 and the lower rolling rolls 27, ensuring the stability and synchronicity of the power transmission. A servo motor I17 is fixedly installed on one side of the frame 2. The output shaft of the servo motor I17 and one end of one of the rolling rolls 27 are both fixedly fitted with synchronous pulleys I14. The outer walls of the two synchronous pulleys I14 are fitted with the same synchronous belt I16. When the servo motor I17 is started, the output shaft of the servo motor I17 drives one of the rolling rolls 27 to rotate through the synchronous belt I16. The rolling roll 27 drives the adjacent conveying roll 29 and the multiple intermediate rolling rolls 27 to rotate through the synchronous pulley III32 and the synchronous belt III33, so as to realize the conveying and rolling of stainless steel plates, realize the scratch-free conveying and precise rolling of stainless steel plates, and avoid the generation of pitting sensitive points caused by friction damage. In use, one of the rotating door panels 15 on the side is opened, allowing the stainless steel plate to be fed into the device from one side. The servo motor I 17 is then started. The output shaft of the servo motor I 17 drives one of the conveyor rollers 29 to rotate via the synchronous belt I 16 and the synchronous pulley I 14. At this time, the conveyor roller 29 can drive the adjacent conveyor rollers 29 and the multiple rolling rollers 27 in the middle to rotate via the synchronous pulley III 32 and the synchronous belt III 33. This not only conveys the stainless steel plate forward, but also rolls the stainless steel plate through the rolling rollers 27 and the rolling rollers 28. This solves the problems of unstable and inefficient power transmission between the conveyor rollers and the rolling rollers in traditional equipment, and avoids slippage and jamming of the plate during the conveying process, thus improving the quality and efficiency of rolling. The roller body material of the rolling rollers 27 and the rolling rollers 28 is pitting-resistant duplex stainless steel, and the roller surface is treated with plasma spraying Al2O3-TiO2 ceramic coating, which not only improves its corrosion resistance, but also avoids scratching the passivation film on the plate surface during the rolling process.

[0052] To maintain the internal temperature of the device, hot air is introduced through the air inlet pipe 3 and conveyed through multiple connecting hoods I8 and connecting pipes 9, ensuring that the stainless steel plate is heated from both above and below, and finally discharged through the exhaust pipe 6. A servo motor II22 is fixedly mounted on the top of the protective cover II5. The servo motor II22 is made of high-temperature resistant material to withstand the high-temperature environment during the rolling process. Multiple rotating shafts I18, made of stainless steel, rotate through the interior of the protective cover II5, providing excellent corrosion resistance and strength. Connecting gears 21 are fixedly sleeved on the outer wall of rotating shaft I18. Two adjacent connecting gears 21 mesh with each other. A synchronous pulley II23 is fixedly sleeved on the outer wall of servo motor II22 and one of the rotating shafts I18. The same synchronous belt II24 is sleeved on the outer wall of the two synchronous pulleys II23. When servo motor II22 is started, the output shaft of servo motor II22 drives one of the rotating shafts I18 to rotate through synchronous pulley II23 and synchronous belt II24. Multiple rotating shafts I18 can rotate synchronously under the connection of connecting gears 21. Multiple fan blades 19 are fixedly sleeved on the outer wall of rotating shaft I18, which can blow hot air to ensure the heating effect. This solves the problems of uneven heat distribution and energy waste in traditional equipment. It can also make the surface temperature uniformity error of the plate ≤3℃, avoid uneven structure caused by local overheating, and further enhance the pitting corrosion resistance.

[0053] The sliding side plate 13 is slidably connected to the side of the protective cover II 5. A limiting component for limiting the sliding side plate 13 is provided on one side of the protective cover II 5. The limiting component includes two fixing blocks 46 symmetrically arranged on one side of the protective cover II 5. The fixing blocks 46 are made of high-strength alloy steel. Two connecting blocks 47 symmetrically arranged are fixedly installed on one side of the sliding side plate 13. A fixing shaft 44 is fixedly installed inside the fixing block 46. The fixing shaft 44 slides through the connecting block 47. A compression spring II 45 is fixedly installed between the top of the connecting block 47 and the bottom of the fixing block 46. The compression spring II 45 is sleeved on the outside of the fixing shaft 44. The elastic force of the compression spring II 45 limits the sliding side plate 13 and ensures the stability of the sliding side plate 13 during the sliding process.

[0054] A fixed frame 43 is fixedly installed on the inner wall of one side of the frame 2. A sliding rectangular plate 49 is fixedly fitted onto the outer wall of multiple rolling rolls 28. An adjustment assembly for adjusting the height of the sliding rectangular plate 49 is provided inside the fixed frame 43. The adjustment assembly includes rectangular slots II 57 on both sides of the fixed frame 43. Two symmetrically arranged limiting vertical slots 59 are provided on both sides of the fixed frame 43. A connected limiting horizontal slot 61 is provided on the inner wall of one side of the limiting vertical slot 59. A strip block 63 is slidably connected inside the limiting horizontal slot 61. A tension spring II 65 is fixedly installed between one end of the strip block 63 and the inner wall of one side of the limiting horizontal slot 61. A vertical plate 64 is fixedly installed on one side of the strip block 63. A side plate II 62 is fixedly installed at the bottom of the vertical plate 64. Multiple supports are fixedly installed on one side of the side plate II 62. A side plate I 54 is fixedly installed on the top of the horizontal plate 58 and the vertical plate 64. Multiple pressing protrusions 55 are fixedly installed on one side of the side plate I 54. Two side plates I 54 and side plates II 62 located on the same side are arranged in parallel inside the rectangular slot II 57. A support plate II 50 is fixedly installed on one end of the sliding rectangular plate 49. Limiting protrusions 51 are fixedly installed on both sides of the support plate II 50. The heights of the supporting horizontal plate 58 and pressing protrusions 55 located on the same side of the side plates II 62 and side plates I 54 are different, which are used to support the limiting protrusions 51 in sequence. A U-shaped sleeve plate 52 is fixedly installed on the top of the fixed frame 43. A lead screw 60 is rotatably passed through the inside of the U-shaped sleeve plate 52. The lead screw 60 is made of high-strength alloy steel. An overrunning clutch 48 is fixedly installed on the outer wall of the lead screw 60. A rotating gear 56 is fixedly installed on the outer wall of the overrunning clutch 48. A trapezoidal push plate 53 is slidably connected inside the U-shaped sleeve plate 52. The lead screw 60 is threaded through the trapezoidal push plate 53. The trapezoidal push plate 53 is used in conjunction with multiple pressing protrusions 55. When the height of the upper roller 28 of the rolling roll needs to be adjusted, the trapezoidal push plate 53 is moved downward by rotating the lead screw 60. The trapezoidal push plate 53 first pushes the two pressing protrusions 55 on one side of one set of side plates I 54. Side plate I 54 drives the vertical plate 64 and side plate II 62 to move laterally. At this time, the vertical plate 64 drives the strip block 63 to move out of the inside of the limiting transverse groove 61, stretching the tension spring II 65. At this time, side plate II 62 drives the supporting transverse plate 58 to move laterally, so that the limiting protrusion 51 is no longer supported and falls onto the two supporting transverse plates 58 of another set. This causes the sliding rectangular plate 49 to move downwards. The heights of the two sets of support plates 58 are not the same. Each push can only move the support plate 58 of the support plate downwards. After the limiting protrusion 51 falls to the other set of support plates 58, pushing again will move the support plate 58 of that set. This process is repeated so that the limiting protrusion 51 can gradually fall down. The sliding rectangular plate 49 drives the upper rollers 28 of multiple rolling rolls to move downwards, realizing flexible and precise adjustment of the rolling roll spacing, ensuring the uniformity of the plate thickness, avoiding stress concentration caused by thickness deviation, and indirectly improving the pitting resistance.

[0055] This equipment provides comprehensive protection for the rolling area through a complete set of protective devices, including protective covers I4, II5, III7, and 10, preventing operators from accidentally coming into contact with the rotating rolling rolls during operation. This addresses the shortcomings of traditional equipment in terms of safety protection and improves the safety of the equipment.

[0056] This application can be used in the field of stainless steel sheet production, or in other fields applicable to this application.

[0057] In another embodiment: Reference Figure 1-10This document describes a pitting-resistant strengthening rolling assembly and stainless steel sheet rolling equipment, along with its application in the stainless steel sheet production field. A fixed box 26 is fixedly installed on one side of the protective cover II5. Inside the fixed box 26 is a control assembly for controlling the downward movement of a sliding rectangular plate 49. The control assembly includes a sliding plate 35 that slides through the inside of the fixed box 26. The sliding plate 35 is made of wear-resistant plastic. A connecting rod 25 is fixedly installed inside the sliding plate 35. A compression spring I 36 is fixedly installed between one side of the sliding plate 35 and the inner wall of one side of the fixed box 26. A rack 34 is fixedly installed at one end of the connecting rod 25, meshing with a rotating gear 56. A crossbar II 39 is fixedly installed at one end of the connecting rod 25. A crossbar I 38 is fixedly installed on one side of the crossbar II 39, and the crossbar I 38 slides through one end of the protective cover III 7. Vertical rods 37 are fixedly installed, and limiting plates 42 are fixedly installed at the bottom of vertical rods 37. L-shaped plates 40 are slidably sleeved on the outer wall of vertical rods 37. The same tension spring I 41 is fixedly installed between the bottom of L-shaped plates 40 and the top of limiting plates 42. The bottom of one side of L-shaped plates 40 is arc-shaped. Rectangular slots I 30 are opened on both sides of the top of frame 2. Rotating door plates 15 are hinged to the bottom of protective covers I 4 and III 7. Rotating door plates 15 are used to block the rectangular slots I 30. Support plates I 31 are fixedly installed at both ends of frame 2. When the stainless steel plate is fed in, it will push one side of the arc surface of L-shaped plate 40. At this time, L-shaped plate 40 slides upward on vertical rods 37, and tension spring I 41 is stretched. After the stainless steel plate is fed in, L-shaped plate 40 moves downward under the tension of tension spring I 41. There is no obstruction on the other side. After the stainless steel plate is rolled, it will be sent out normally. After the first rolling, the stainless steel plate moves to the side away from L-shaped plate 40. At this point, servo motor I17 is activated, causing its output shaft to reverse, which in turn allows the stainless steel plate to return and continue rolling. When it comes into contact with the L-shaped plate 40 again, it contacts the plane of the L-shaped plate 40, pushing the vertical rod 37 to move laterally. The vertical rod 37 then drives the horizontal rods I38 and II39 to move laterally. At this time, the horizontal rod II39 drives the rack 34 to move laterally via the connecting rod 25. The slide plate 35 moves laterally under the tension of the compression spring I36. Then, the output shaft of servo motor I17 reverses again, causing the stainless steel plate to be sent back, and so on. Furthermore, when the rack 34 moves, it drives the rotating gear 56 to rotate, which in turn drives the lead screw 60 to rotate, thereby causing the upper roller 28 of the rolling roll to move downward, thinning the stainless steel plate during multiple rolling processes.

[0058] However, as is well known to those skilled in the art, the working principles and wiring methods of servo motor I17 and servo motor II22 are conventional methods or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pitting-resistant reinforced rolled component, characterized in that, include: The machine frame (2), sliding side plate (13), multiple rolling roll lower rolls (27) and multiple rolling roll upper rolls (28) are rotatably connected inside the sliding side plate (13). The sliding side plate (13) is slidably connected to one side of the machine frame (2). The multiple rolling roll upper rolls (28) are rotatably connected inside the machine frame (2). Multiple conveying rolls (29) are rotatably connected inside the machine frame (2). The multiple conveying rolls (29) are divided into two groups and located on both sides of the rolling roll lower rolls (27). Two synchronous pulleys III (32) are fixedly sleeved on the outer walls of both the rolling roll lower rolls (27) and the conveying rolls (29). The outer walls of two adjacent synchronous pulleys III (32) are driven by sleeves. A servo motor I (17) is fixedly installed on one side of the frame (2). The output shaft of the servo motor I (17) and one end of one of the rolling rolls (27) are both fixedly fitted with a synchronous wheel I (14). The outer walls of the two synchronous wheels I (14) are fitted with the same synchronous belt I (16). The servo motor I (17) drives the rolling roll (27) to rotate through the synchronous belt I (16) and the synchronous wheel I (14). The rolling roll (27) drives the other rolling rolls (27) and the conveying roll (29) to rotate synchronously through the synchronous wheel III (32) and the synchronous belt III (33) to realize the conveying and rolling of stainless steel plates.

2. A stainless steel sheet rolling equipment, characterized in that, The assembly includes the pitting-resistant strengthening rolling component as described in claim 1, and further includes four support legs I (1), which are respectively fixedly installed at the four bottom corners of the frame (2). Support legs II (11) are fixedly installed around the frame (2). A protective cover II (5) and a protective shell (10) are fixedly installed between the four support legs II (11). The protective shell (10) is located below the protective cover II (5). A protective cover I (4) and a protective cover III (7) are fixedly installed on the top of the frame (2). The protective cover I (4) and the protective cover III (7) are respectively located at the bottom corners of the frame (2). The protective cover II (5) is connected to both sides of the protective cover II (5). The protective cover II (5) has a strip-shaped slot (20) on both sides. The strip-shaped slot (20) is used in conjunction with the upper roller (28) of the rolling roll. The bottom of the frame (2) is fixedly connected to multiple connecting covers I (8) and connecting covers II (12). The bottom of multiple connecting covers I (8) and connecting covers II (12) is fixedly installed with the same connecting pipe (9). The top side of the protective cover I (4) is fixedly installed with a connected air inlet pipe (3). The top side of the protective cover III (7) is fixedly installed with a connected exhaust pipe (6). Hot air enters through the air inlet pipe (3), is distributed through the connecting hood I (8) and the connecting pipe (9), heats the stainless steel plate, and is discharged through the exhaust pipe (6).

3. The stainless steel sheet rolling equipment according to claim 2, characterized in that, The sliding side plate (13) is slidably connected to the side of the protective cover II (5). A limiting component is provided on one side of the protective cover II (5). The limiting component includes two fixed blocks (46) symmetrically arranged and fixedly installed on one side of the protective cover II (5). Two connecting blocks (47) symmetrically arranged are fixedly installed on one side of the sliding side plate (13). A fixed shaft (44) is fixedly installed inside the fixed block (46). The fixed shaft (44) slides through the connecting block (47). The same compression spring II (45) is fixedly installed between the top of the connecting block (47) and the bottom of the fixed block (46). The compression spring II (45) is sleeved on the outside of the fixed shaft (44).

4. The stainless steel sheet rolling equipment according to claim 2, characterized in that, A fixed frame (43) is fixedly installed on one side of the inner wall of the frame (2), and the same sliding rectangular plate (49) is fixedly sleeved on the outer wall of the multiple rolling rolls (28). An adjustment component is provided inside the fixed frame (43), and the adjustment component is used to adjust the height of the sliding rectangular plate (49). The adjustment component includes rectangular slots II (57) on both sides of the fixed frame (43). Two symmetrically arranged limiting vertical slots (59) are provided on both sides of the fixed frame (43). A connecting limiting horizontal slot (61) is provided on one inner wall of the limiting vertical slot (59). A strip block (63) is slidably connected inside the limiting horizontal slot (61). A tension spring II (65) is fixedly installed between one end of the strip block (63) and one inner wall of the limiting horizontal slot (61). A vertical plate (64) is fixedly installed on one side of the strip block (63). A side plate II (62) is fixedly installed at the bottom of the vertical plate (64). Multiple supports are fixedly installed on one side of the side plate II (62). A horizontal plate (58) is fixedly installed on the top of the vertical plate (64). A plurality of pressing protrusions (55) are fixedly installed on one side of the side plate I (54). Two side plates I (54) and side plates II (62) located on the same side are arranged in parallel inside the rectangular slot II (57). A support plate II (50) is fixedly installed at one end of the sliding rectangular plate (49). Limiting protrusions (51) are fixedly installed on both sides of the support plate II (50). The heights of the supporting horizontal plate (58) and the pressing protrusions (55) located on the same side of the side plates II (62) and the side plates I (54) are not the same, and are used to support the limiting protrusions (51) in sequence.

5. The stainless steel sheet rolling equipment according to claim 4, characterized in that, A U-shaped sleeve plate (52) is fixedly installed on the top of the fixed frame (43). A lead screw (60) is rotatably passed through the inside of the U-shaped sleeve plate (52). An overrunning clutch (48) is fixedly provided on the outer wall of the lead screw (60). A rotating gear (56) is fixedly provided on the outer wall of the overrunning clutch (48). A trapezoidal push plate (53) is slidably connected inside the U-shaped sleeve plate (52). The lead screw (60) is threaded through the trapezoidal push plate (53). The trapezoidal push plate (53) is used in conjunction with a plurality of pressing protrusions (55). When the lead screw (60) rotates, it drives the trapezoidal push plate (53) to move. The trapezoidal push plate (53) pushes the pressing protrusion (55) to make the supporting horizontal plate (58) move laterally, thereby causing the limiting protrusion (51) to fall and adjust the height of the upper roller (28) of the rolling roll.

6. The stainless steel sheet rolling equipment according to claim 3, characterized in that, A fixing box (26) is fixedly installed on one side of the protective cover II (5). A control component is provided inside the fixing box (26). The control component is used to control the sliding rectangular plate (49) to move downward. The control component includes a sliding plate (35) that slides through the interior of the fixed box (26). A connecting rod (25) is fixedly inserted through the interior of the sliding plate (35). A compression spring I (36) is fixedly installed between one side of the sliding plate (35) and one side of the inner wall of the fixed box (26). A rack (34) is fixedly installed at one end of the connecting rod (25), and the rack (34) meshes with the rotating gear (56). A crossbar II (39) is fixedly installed at one end of the connecting rod (25). A crossbar I (38) is fixedly installed on one side of the crossbar II (39). The crossbar I (38) slides through one end of the protective cover III (7) and is fixedly installed with... A vertical rod (37) is fixedly installed at the bottom of the vertical rod (37). An L-shaped plate (40) is slidably sleeved on the outer wall of the vertical rod (37). The same tension spring I (41) is fixedly installed between the bottom of the L-shaped plate (40) and the top of the limiting plate (42). The bottom of one side of the L-shaped plate (40) is arc-shaped. Rectangular slots I (30) are opened on both sides of the top of the frame (2). Rotating door plates (15) are hinged at the bottom of the protective cover I (4) and the protective cover III (7). The rotating door plates (15) are used to block the rectangular slots I (30). Support plates I (31) are fixedly installed at both ends of the frame (2).

7. The stainless steel sheet rolling equipment according to claim 2, characterized in that, A servo motor II (22) is fixedly installed on the top of the protective cover II (5). Multiple rotating shafts I (18) rotate through the interior of the protective cover II (5). Connecting gears (21) are fixedly sleeved on the outer walls of the rotating shafts I (18). Two adjacent connecting gears (21) mesh with each other. Synchronous pulleys II (23) are fixedly sleeved on the outer walls of the servo motor II (22) and one of the rotating shafts I (18). The same synchronous belt II (24) is driven on the outer walls of the two synchronous pulleys II (23). Multiple fan blades (19) are fixedly sleeved on the outer walls of the rotating shafts I (18). The servo motor II (22) drives the rotating shaft I (18) to rotate through the synchronous belt II (24) and the synchronous wheel II (23). Multiple rotating shafts I (18) rotate synchronously through the connecting gear (21), driving the fan blades (19) to blow hot air to enhance the heating effect.

8. A method for rolling stainless steel sheet, using the stainless steel sheet rolling equipment as described in claims 2-7, characterized in that, Includes the following steps: S1. The stainless steel sheet to be rolled is fed into the machine frame (2) through the rotating door plate (15). The rotating door plate (15) is closed to seal the rolling space. Inert gas is introduced through the air inlet pipe (3) to replace the air in the sealed space. The replacement time is ≥5min to avoid oxidation of the sheet surface during the rolling process. S2. Start servo motor I (17), drive the rolling roll lower roll (27) and conveying roll (29) to rotate synchronously through synchronous belt I (16), synchronous pulley I (14), synchronous pulley III (32) and synchronous belt III (33), so as to realize the scratch-free conveying and initial rolling of stainless steel plate; S3. A mixture of hot air and inert gas is introduced through the air inlet pipe (3), and evenly distributed through the connecting cover I (8) and the connecting pipe (9) to heat the plate to 850-1000℃ and keep it warm. The servo motor II (22) is started to drive the fan blades (19) to blow the mixed hot air to ensure that the surface temperature of the plate is uniform. S4. When the stainless steel sheet pushes the L-shaped plate (40), the height of the upper roller (28) of the rolling roll is automatically adjusted by the control component and the adjustment component to achieve multi-pass gradient rolling (each pass reduction is 0.1-0.5mm), avoiding stress concentration and surface defects caused by excessive single reduction. S5. Roll the stainless steel sheet back and forth multiple times (3-5 times) until the required thickness is achieved. During the rolling process, a mixed gas is continuously introduced. After rolling is completed, inert gas is introduced until the sheet cools to below 300°C to avoid surface oxidation during cooling. Finally, a stainless steel sheet with enhanced pitting resistance is obtained.

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