Device for preventing super duplex stainless steel hot rolled plate coil from being broken

Abstract

The utility model discloses a device for preventing a super duplex stainless steel hot rolled plate coil from being broken, which comprises a cooling device in laminar cooling, the cooling device comprises a rack, the rack is sequentially provided with a cleaning mechanism, a spraying pipeline, a straightening mechanism, a blowing mechanism, a temperature measuring mechanism and a cooling mechanism, the cooling mechanism comprises an adjusting mechanism and a pair of spraying mechanisms, and the spraying mechanisms are arranged on the rack. According to actual use conditions, the cleaning mechanism, the spraying pipeline and the purging mechanism are also arranged below the rack and are symmetrical to the cleaning mechanism, the spraying pipeline and the purging mechanism which are arranged above the rack; a plurality of groups of spraying pipelines are uniformly arranged, and a plurality of groups of cooling mechanisms are uniformly arranged. By means of the cooling device, the stainless steel plate can be effectively and evenly cooled, precipitation of harmful phases in the cooled duplex stainless steel plate is reduced, and then the belt breakage rate of the duplex stainless steel plate is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of duplex stainless steel production, in particular to a device for preventing super duplex stainless steel hot-rolled coils from breaking. Background Art

[0002] Super duplex stainless steel has poorer hot working plasticity due to the coexistence of two phases and uncoordinated deformation at high temperature. It is very easy to have hot working edge cracks. Large cracks are easily broken under tension in the subsequent production process. Compared with ordinary duplex stainless steel, super duplex stainless steel contains higher Cr and Mo elements, which makes it easier for brittle harmful phases to precipitate in the organization. Especially in the late stage of hot rolling of hot coils and the process of coiling and cooling, harmful precipitates are very likely to be produced due to inappropriate temperature control range or insufficient control accuracy of the whole coil, which leads to the breakage of hot coils in the subsequent production process, bringing great damage to production and manufacturing.

[0003] After searching, the paper "Analysis of the Causes of 2205 Duplex Stainless Steel Hot-rolled Coil Breakage" published in the journal Hot Working Technology in Issue 5 of 2019 clearly proposed and demonstrated the causes of the breakage. The results showed that a large amount of harmful phase (σ phase) precipitated in the broken sample was the root cause of the breakage of 2205 duplex stainless steel coil; and the excessively high temperature and slow cooling speed after laminar cooling were the causes of the σ phase precipitation in the 2205 duplex stainless steel hot-rolled coil.

[0004] After searching, the prior art publication number CN 116673334 A is a method for preventing the breakage of super duplex stainless steel hot coils. By controlling the process parameters such as the hot rolling process temperature, the final rolling temperature, and the coiling temperature, on the one hand, the cracking of the hot coil is reduced, thereby preventing the breakage caused by the cracking; on the other hand, the super duplex stainless steel hot rolled coil is prevented from breaking due to the precipitation of harmful phases in the cooling process after rolling and coiling. The recoiling unit is then used to recoil and confirm the recoiling, ensuring that the 3-12 mm thick super duplex stainless steel hot coil is not broken in the subsequent production process, thereby realizing the safe, efficient, and qualified production of super duplex stainless steel hot coils.

[0005] The above search results indicate that uneven cooling is an important factor in the precipitation of harmful phases and strip breakage in duplex stainless steel plates. Most of the existing laminar cooling devices for stainless steel plates use a simple method of vertically spraying the stainless steel surface up and down for cooling. Although this method seems to spray water evenly, it still causes temperature differences, resulting in uneven temperatures and the precipitation of harmful phases. The area directly sprayed by the water column cools down faster than other areas. Moreover, when the stainless steel plate initially contacts the cooling water after hot rolling, the temperature drops suddenly, causing slight warping of the stainless steel plate. The warping will change the flow direction of the water flow, which will further lead to uneven water source distribution, resulting in uneven cooling effects. Further, in the above situation, most of the stainless steel plates transported after cooling do not have corresponding remedial measures, which further exacerbates the precipitation of harmful phases and increases the occurrence rate of strip breakage.

[0006] For example, in the prior art with the publication number CN 220825319 U that adopts the vertical spraying of cooling water method in the above cooling technology, a laminar cooling device for a hot-rolled thin plate stainless steel production line. The main purpose of the present invention is to directly close some of the headers in the laminar cooling device to prevent the cooled water blocked from being mixed with the cooling water directly used to cool the stainless steel plate, causing waste of resources. If this technology is used for the laminar cooling of duplex stainless steel plates, it will cause the precipitation of certain harmful phases in the duplex stainless steel plates, resulting in strip breakage.

[0007] Therefore, in combination with the prior art and the above search, the present invention provides a method for preventing strip breakage of duplex stainless steel plates. Summary of the Invention

[0008] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a device for preventing strip breakage of super duplex stainless steel hot-rolled coils. Through the processing method of duplex stainless steel plates and the cooling device in the cooling step, it can effectively and evenly cool the stainless steel plate, reduce the precipitation of harmful phases in the duplex stainless steel plate after cooling, and thus reduce the strip breakage rate of the duplex stainless steel plate.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is:

[0010] A device for preventing strip breakage of super duplex stainless steel hot-rolled coils includes a cooling device in laminar cooling. The cooling device includes a frame, on which a cleaning mechanism, a spray pipeline, a straightening mechanism, a purging mechanism, a temperature measuring mechanism, and a cooling mechanism are successively arranged. The cooling mechanism includes an adjusting mechanism and a pair of spray mechanisms. According to the actual use situation, the cleaning mechanism, the spray pipeline, and the purging mechanism are also arranged below the frame, symmetrically with the cleaning mechanism, the spray pipeline, and the purging mechanism arranged above. The spray pipeline is provided with several groups and is evenly arranged, and the cooling mechanism is provided with several groups and is evenly arranged.

[0011] The straightening mechanism includes a sixth support plate, a sixth electric push rod, a fifth guide shaft, a seventh support plate, and straightening rollers. The sixth support plate is fixedly connected to the frame. The sixth electric push rod is fixed on the sixth support plate. The seventh support plate is arranged below the sixth support plate. The two ends of the seventh support plate are provided with fifth guide shafts, and the fifth guide shafts are slidably connected to the frame. The top shaft of the sixth electric push rod is fixedly connected to the seventh support plate. A pair of rotating straightening rollers are arranged on the seventh support plate. The straightening rollers are hollow, and water outlet holes are arranged on the straightening rollers. One end of the straightening roller is provided with a guide groove, and the guide groove is an annular and closed-loop groove that is connected end to end. The other end of the straightening roller is provided with a rotary joint and is connected to an external water supply mechanism. One end of the seventh support plate is provided with a mounting block, and a second limiting shaft is arranged on the mounting block and is arranged in the guide groove. By pushing the seventh support plate and the straightening rollers up and down through the sixth electric push rod, the straightening rollers are pressed according to the thickness of the duplex stainless steel plate. The straightening rollers and the roller shafts for transmission on the frame are symmetrically matched up and down to achieve the straightening effect. Then, the water outlet holes on the straightening rollers discharge water, which can improve the cooling effect. Further, the movement of the second limiting shaft in the guide groove drives the straightening rollers to slide left and right while rotating, so that the water flow flowing out of the water outlet is spread in a fan shape, making the cooling effect more uniform.

[0012] The purging mechanism includes an eighth support plate. The eighth support plate is fixedly connected to the frame. A seventh electric push rod is arranged on the eighth support plate. The end of the top shaft of the seventh electric push rod is fixedly connected with a purging box. An air inlet pipe connected to an external air supply mechanism is arranged on one side of the purging box. There are two groups of the purging boxes, and each group has a pair and is arranged front and back. The purging directions of the two groups are opposite. After purging in opposite directions by the two groups of purging boxes, the water liquid on the surface of the duplex stainless steel plate is removed, which is beneficial to improving the temperature measurement accuracy of the subsequent temperature measurement mechanism.

[0013] The temperature measurement mechanism includes a ninth support plate. The ninth support plate is fixedly connected to the frame. A number of temperature sensors are arranged on the ninth support plate. The temperature sensors adopt the infrared induction principle. The duplex stainless steel plate is divided into several regions by the temperature sensors for targeted temperature measurement, and the regions with too high temperature are cooled by targeted water spraying through the cooling mechanism.

[0014] The cleaning mechanism includes a fourth support plate. The two ends of the fourth support plate are fixedly connected to the frame. A fifth support plate is arranged below the fourth support plate. The two ends of the fifth support plate are provided with third guide shafts and are slidably connected to the frame. A fifth electric push rod is arranged on the fourth support plate, and the top shaft of the fifth electric push rod is fixedly connected to the fifth support plate. A Z-shaped plate is arranged below the fifth support plate. A screw rod is arranged on one side of the Z-shaped plate and passes through the fifth support plate, and the screw rod is fixed by a nut. A second spring is sleeved on the screw rod, and the second spring abuts against the fifth support plate and the Z-shaped plate. A fourth guide shaft is also arranged on the Z-shaped plate and is slidably connected to the Z-shaped plate. A second motor is arranged on the Z-shaped plate. A rotating cleaning roller is arranged below the Z-shaped plate. The cleaning roller is a cloth sticking roller and is used to adhere to the impurities on the surface of the duplex stainless steel plate. The cleaning roller is driven to rotate by the second motor.

[0015] A second box body is provided on one side of the cleaning roller and is fixed on the Z-shaped plate; an air inlet and a scraper are provided on one side of the second box body, and the scraper scrapes the cleaning roller; a third motor is provided on one side of the second box body.

[0016] A air volume regulating mechanism is provided inside the second box body, including a second rotating shaft. A second connecting arm is provided on the second rotating shaft, and an arc-shaped plate is provided on the second connecting arm. The arc-shaped plate fits the inner wall of the second box body, and one end of the second rotating shaft is connected to the third motor; the third motor cooperates with a chain and a sprocket to drive the second rotating shaft to rotate, and then drives the arc-shaped plate to rotate to control the size of the air inlet, so as to realize the adjustment and control of the negative pressure adsorption force.

[0017] A first box body is provided on one side of the second box body. A connecting pipe is provided on one side of the first box body and is connected to the second box body; an air pipe is provided on one side of the first box body and is connected to an external negative pressure adsorption power mechanism; the first box body and the second box body are used for negative pressure adsorption treatment of the impurities adhered to the cleaning roller, so that the cleaning roller can maintain a long-term cleaning operation.

[0018] The adjusting mechanism includes a first electric push rod, a first support plate, and a second support plate. The first support plate is fixedly connected to the frame. The second support plate is arranged below the first support plate. The first electric push rod is fixed on the first support plate. The top shaft of the first electric push rod is fixedly connected to the second support plate. First guide shafts are provided at both ends of the second support plate and are slidably connected to the frame.

[0019] The spraying mechanism includes a second electric push rod, a third support plate, a first pipe, and a second pipe; the second electric push rod is fixed on the second support plate. The top shaft of the second electric push rod is fixedly connected to the third support plate. A telescopic column is provided between the third support plate and the second support plate for telescopic guidance; the third support plate is fixedly connected to the first pipe, the second pipe is connected to the first pipe, a water storage tank is provided on the second pipe, a connecting pipe is provided on the water storage tank, and a plurality of spray pipes are provided on the connecting pipe. The spray pipes are movably connected to the connecting pipe through ball heads. A limiting hole and a mounting bracket are provided in the middle of the water storage tank; the second electric push rod is used to control the up and down movement of the third support plate, the first pipe, and the second pipe to control the distance between the spray pipes and the duplex stainless steel plate.

[0020] A first water inlet pipe is provided on one side of the first pipe for water inlet.

[0021] A first through hole and a second through hole are provided on the second pipe, and a second water inlet pipe is provided on one side of the second pipe.

[0022] Inside the second pipeline, a water volume control mechanism and a sealing mechanism are provided. A drain pipe is provided on one side of the second pipeline and is connected to the sealing mechanism. The water volume control mechanism includes a first rotating shaft and a first motor. A first connecting arm is provided on the first rotating shaft. A top plate is provided at the end of the first connecting arm. A water permeable hole is provided on the top plate. A filter membrane is provided on the water permeable hole for filtering and anti-blocking. The first motor is connected to the end of the first rotating shaft, and the first motor is fixed on one side of the second pipeline. Four sets of the top plates are provided, and the diameters of the water permeable holes on each set of top plates are different. A wedge angle is provided on one side of the first connecting arm. By driving the first rotating shaft to rotate through the first motor, the water permeable hole on the top plate is aligned with the first through hole to conduct water, so as to realize water inflows of different sizes.

[0023] The sealing mechanism includes a sealing plate, an L-shaped support arm, a second guide shaft, and a first spring. A pair of sealing blocks are provided at both ends of the sealing plate. The sealing blocks are inserted into both ends of the second pipeline. A wedge angle and a fixing block are provided on the sealing blocks. The L-shaped support arm and the second guide shaft are fixedly connected to the end of the second pipeline. The second guide shaft is slidably connected to the fixing block. The second guide shaft is fixedly connected to the L-shaped support arm. The first spring is sleeved on the second guide shaft. The first spring abuts against the L-shaped support arm and the fixing block, and pushes the sealing block to insert into the end of the sealing plate to support it. Sealing strips are provided on both sides of the sealing plate. The sealing strips are elastically connected to the sealing plate and can retract into the interior of the sealing plate when being squeezed. The sealing plate, the sealing strips, and the sealing blocks cooperate with the second pipeline to form a closed space inside the second pipeline and are connected to the drain pipe and the second through hole. When the first rotating shaft rotates, it drives the top plate to press the sealing strip and then enters the above-mentioned closed space. The water in the first pipeline enters the closed space through the second through hole. During this process, the filter membrane on the water permeable hole on the top plate is backflushed, and the sundries are discharged along the drain pipe to keep the filter membrane unblocked. The wedge angle on the first connecting arm fits with the wedge angle on the sealing block.

[0024] A control mechanism is provided on the water storage tank, including a fixed frame, a first sleeve, an adjustment column, a third electric push rod, an adjustment arm, a control shaft, a control arm, and a fourth electric push rod; the first sleeve is fixedly connected to the fixed frame, a flange is provided at the bottom of the first sleeve and is arranged on the mounting frame, and the flange is arranged on both sides of the mounting frame for limiting; the adjustment column is sleeved on the first sleeve; one end of the adjustment column is provided with an adjustment frame, an adjustment shaft is provided on the adjustment frame, and the other end of the adjustment column is provided with a limit shaft corresponding to a limit hole; the third electric push rod is fixed on the fixed frame, and the top shaft of the third electric push rod is fixedly connected to the adjustment frame; the adjustment column is driven to move up and down by the third electric push rod; symmetrically arranged fixed arms are provided on the first sleeve, support arms are provided on the fixed arms, and a collar is provided at one end of the fixed arm; adjustment slots are provided at both ends of the adjustment arm, a second pin shaft is provided on the adjustment arm and is rotatably connected to the support arm; the adjustment slot at one end of the adjustment arm is movably connected to the adjustment shaft; a control board is provided on the control arm, one end of the control board is rotatably connected to the control arm, the control board is fixedly connected to the spray pipe, a second sleeve is provided at one end of the control arm and is rotatably connected to the collar, and a plurality of slots are provided on the second sleeve; a first pin shaft is provided at one end of the control shaft, the first pin shaft is arranged in the adjustment slot, a limit block is provided on the control shaft, and the limit block is inserted into the slot to lock the rotational relationship between the fixed arm and the control arm; the fourth electric push rod is fixed on one side of the water storage tank, a third connecting arm is provided on the top shaft of the fourth electric push rod, and the third connecting arm is fixedly connected to the control arm; the fourth electric push rod is used to push the control arm to reciprocate to control the spraying angle of the spray pipe.

[0025] The beneficial effects of the present utility model compared with the prior art are as follows:

[0026] 1) For the precipitation of harmful phases, by controlling the heating temperature of the stainless steel plate, the starting and ending temperatures of finish rolling, and at the same time cooperating with the cooling device in laminar flow cooling to stably cool the steel plate, the precipitation of harmful phases is effectively reduced, thereby reducing the incidence of strip breakage; at the same time, the generation of edge cracking of the coil is reduced, and further reducing the failure rate of strip breakage caused by edge cracking during transmission; it can effectively ensure the safe and qualified production of duplex stainless steel plates;

[0027] 2) The cleaning mechanism is provided with a cleaning roller to adhere and clean the impurities on the duplex stainless steel plate. Compared with the method of directly adsorbing impurities, the cleaning roller can also wipe and adhere to impurities with a certain viscosity, and the cleaning of impurities is relatively thorough. At the same time, the cleaning roller scrapes off the adhered impurities through a scraper, making it more direct and easier for the second box body to adsorb and remove them, ensuring the cleanliness and continuous adhesion effect of the cleaning roller; further, it can ensure that the surface of the duplex stainless steel remains clean, avoiding the situation where the thickness of the stainless steel plate is uneven due to adhered impurities when the subsequent spray pipe sprays water for cooling, thereby causing uneven cooling and promoting the precipitation of harmful phases;

[0028] 3) The utility model is provided with a straightening mechanism, and the straightening mechanism is provided with straightening rollers. The sixth electric push rod is used to push the seventh support plate and the straightening rollers to move up and down, so that the straightening rollers press the stainless steel plate according to the thickness of the duplex stainless steel plate. The straightening rollers and the roller shafts for transmission on the frame are symmetrically matched up and down to achieve the straightening effect, avoiding the occurrence of emergency warping of the stainless steel plate due to the cooling by the spray pipe. The occurrence of warping will cause different amounts of water intercepted in its position area and other areas, and then uneven cooling will occur. However, the cooperation between the straightening rollers and the transmission rollers on the frame can roll and straighten the stainless steel plate. At the same time, the straightening rollers are also provided with water outlet holes to discharge water to improve the cooling effect. Further, the movement of the second limiting shaft in the guide groove drives the straightening rollers to slide left and right while rotating, so that the columnar water flow flowing out of the water outlet spreads in a fan shape on the stainless steel surface, making the cooling effect more uniform.

[0029] 4) The cooling mechanism is provided with a pair of spray mechanisms, and the spray mechanisms are provided with control mechanisms. The control mechanisms can control the spray pipes to spray water for cooling in a targeted manner according to the temperature values measured by the temperature measuring mechanism in different areas, so that the cooling effects in each area tend to be the same. In this process, when the spray pipes spray water, water is supplied through the second water inlet pipe into the second pipeline, then enters the water storage tank, and then is sprayed out through the spray pipes. Among them, the spray angle of the spray pipes can be controlled by the control mechanism to spray in a targeted manner for the overheated area. The spray pipes can be inclined as a whole to one side for spraying, or the spray pipes on both sides of the control mechanism can be adjusted to gather and spray towards the middle.

[0030] First, the third electric push rod is used to control the adjustment column to move so that the limiting shaft is inserted into the limiting hole to fix the first sleeve, so that it cannot slide on the mounting bracket. Then, the fourth electric push rod is used to push the control arm to move, and then the control arms on both sides of the first sleeve are pushed to move in the opposite direction with the first sleeve as the axis. Then, the control board is used to control the spray pipe to rotate around the ball head, so as to realize the adjustment of the spraying angle, so that the spray pipes on both sides of the first sleeve concentrate and spray towards the center direction.

[0031] Further, the third electric push rod drives the adjustment column to rise to release the insertion state of the limiting shaft and the limiting hole. At the same time, when the third electric push rod drives the adjustment column to rise, it will drive one end of the adjustment arm to rise, and then the other end of the adjustment arm presses the control shaft to press down, so that the limiting block is inserted into the slot on the second sleeve, locking the rotational relationship between the control arm and the fixed arm so that it cannot rotate randomly. At this time, using the fourth electric push rod to push the control arm can push the spray pipes as a whole to uniformly adjust the spraying angle. At this time, the spray pipes can be inclined as a whole to one side to spray water for cooling in a targeted manner for one side area of the duplex stainless steel plate. Through the overall spray cooling of the spray pipe in the early stage and the targeted cooling of the cooling mechanism in the later stage, the cooling effects of each area of the stainless steel plate tend to be uniform, reducing the precipitation of harmful phases in the stainless steel plate.

[0032] 5) In the closing mechanism, it is possible to backflush the filter membrane on the water permeable holes on the top plate, remove the debris on the filter membrane, and keep it unobstructed; when the top plate rotates, the seal strip touched by the top plate causes the seal strip to retract into the sealing plate, then the top plate enters the closed space and aligns the water permeable holes with the second through holes, and then the water in the first pipeline enters the closed space through the second through holes to backflush the filter membrane on the water permeable holes, and the debris on the filter membrane is discharged along the drain pipe through the water flow; during this process, the first connecting arm pushes the wedge angle on the sealing block to make the sealing block withdraw from the inserted state with the sealing plate, and then the first connecting arm continues to rotate and fits with the wedge angle of the second sealing block to form a closed space. Throughout the process, there is always a sealing block in an inserted state with the sealing plate, thereby maintaining the support and fixation of the sealing plate; through the above measures, the blockage rate of the water inlet of the spray pipe can be reduced, the spray pipe can be ensured to be unobstructed, and thus the continuous water spraying and cooling effect of the spray pipe can be ensured, enabling the duplex stainless steel plate to obtain a uniform cooling effect and reducing the generation of harmful phases. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG. Figure 1 is a schematic structural view of a device for preventing breakage of a super duplex stainless steel hot rolled coil in the present utility model;

[0034] FIG. Figure 2 is a schematic structural view of the adjusting mechanism and the spraying mechanism;

[0035] FIG. Figure 3 is a schematic structural view of the spraying mechanism Figure 1 ;

[0036] FIG. Figure 4 is a schematic structural view of the spraying mechanism Figure 2 ;

[0037] FIG. Figure 5 is a schematic structural view of the control mechanism;

[0038] FIG. Figure 6 is a schematic structural view of the adjusting column and the first sleeve;

[0039] FIG. Figure 7 is a schematic structural view of the adjusting arm and the control arm;

[0040] FIG. Figure 8 is a schematic structural view of the control arm;

[0041] FIG. Figure 9 is a partial schematic structural view of the first sleeve;

[0042] FIG. Figure 10 is a schematic structural view of the adjusting arm and the control shaft;

[0043] FIG. Figure 11 is a schematic structural view of the first pipeline and the second pipeline;

[0044] Attached Figure 12 Yes Figure 11 A magnified schematic diagram of the local structure;

[0045] Attached Figure 13 is a schematic diagram of the internal structure of the second pipeline;

[0046] Attached Figure 14 It is a schematic diagram of the structure of the water volume control mechanism;

[0047] Attached Figure 15 It is a structural diagram of the closing mechanism;

[0048] Attached Figure 16 This is a schematic diagram of the structure of the cleaning mechanism. Figure 1 ;

[0049] Attached Figure 17 This is a schematic diagram of the structure of the cleaning mechanism. Figure 2 ;

[0050] Attached Figure 18 This is a schematic diagram of the structure of the cleaning mechanism. Figure 3 ;

[0051] Attached Figure 19 This is a schematic diagram of the structure of the straightening mechanism. Figure 1 ;

[0052] Attached Figure 20 This is a schematic diagram of the structure of the straightening mechanism. Figure 2 ;

[0053] Attached Figure 21 It is a structural schematic diagram of the purge mechanism;

[0054] In the figure: 1, frame; 101, roller shaft; 2, cooling mechanism; 3, adjusting mechanism; 31, first electric push rod; 32, first support plate; 33, second support plate; 34, first guiding shaft; 4, spraying mechanism; 41, second electric push rod; 42, third support plate; 421, telescopic column; 43, first pipeline; 431, first water inlet pipe; 44, second pipeline; 441, first through hole; 442, second through hole; 443, drain pipe; 444, second water inlet pipe; 45, spray pipe; 46, control mechanism; 461, fixing frame; 462, first sleeve; 4621, flange; 4622, fixing arm; 4623, support arm; 4624, collar; 463, adjusting column; 4631, adjusting shaft; 4632, limiting shaft; 4633, adjusting frame; 464, third electric push rod; 465, adjusting arm; 4651, adjusting groove; 4652, second pin shaft; 467, control shaft; 4671, limiting block; 4672, first pin shaft; 468, control arm; 4681, control board; 4682, slot; 4683, second sleeve; 469, fourth electric push rod; 4691, third connecting arm; 47, water storage tank; 471, mounting rack; 472, limiting hole; 473, connecting pipe; 48, water volume control mechanism; 481, first connecting arm; 482, top plate; 4821, water permeable hole; 483, first rotating shaft; 485, first motor; 5, closing mechanism; 51, sealing plate; 52, sealing strip; 53, sealing block; 531, fixing block; 532, first spring; 533, L-shaped support arm; 534, second guiding shaft; 535, wedge angle; 6, cleaning mechanism; 61, fourth support plate; 62, fifth electric push rod; 63, fifth support plate; 631, third guiding shaft; 64, Z-shaped plate; 641, fourth guiding shaft; 642, screw; 643, nut; 644, second spring; 65, first box body; 651, air pipe; 652, connecting pipe; 66, cleaning roller; 67, second motor; 68, second box body; 681, third motor; 682, scraper; 683, air inlet; 69, air volume adjusting mechanism; 691, second connecting arm; 692, arc-shaped plate; 693, second rotating shaft; 7, duplex stainless steel plate;

[0055] 8, straightening mechanism; 81, sixth support plate; 82, sixth electric push rod; 84, seventh support plate; 83, fifth guiding shaft; 85, straightening roller; 851, guiding groove; 86, mounting block; 861, second limiting shaft; 87, rotary joint; 9, spraying pipeline;

[0056] 10, purging mechanism; 1001, eighth support plate; 1002, seventh electric push rod; 1003, purging box; 1004, air inlet pipe;

[0057] 11, temperature measuring mechanism; 1101, temperature detector; 1102, ninth support plate. Specific embodiments

[0058] For the convenience of those skilled in the art to understand, the technical solutions of the present utility model will be further specifically described below in conjunction with the attached Figure 1-21 drawings, and the technical solutions of the present utility model will be further specifically described below.

[0059] A process for preventing the breakage of a super duplex stainless steel hot-rolled coil. The processing steps sequentially include billet heating, high-pressure water descaling, rough rolling, finish rolling, laminar flow cooling, and coiling of the steel plate. First, the billet is heated, then the scale on the surface of the billet is treated by high-pressure water, and then rough rolling and finish rolling are carried out in sequence. Then, the steel plate after finish rolling is cooled, and then coiled.

[0060] 1) The billet heating is divided into a preheating section, a heating section, and a soaking section. The temperature of the preheating section is controlled at 750 - 830 °C; the temperature of the heating section is controlled at 1000 - 1120 °C; the temperature of the soaking section is controlled at 1220 - 1250 °C.

[0061] 2) High-pressure water descaling: The scale on the surface of the heated billet is removed by a high-pressure water spraying mechanism.

[0062] 3) Rough rolling of the billet: The heated ingot is conveyed to the rough rolling mill by a transfer roller, and a corresponding heat preservation cover is provided on the conveying device. The ingot is rolled 7 passes during rough rolling.

[0063] 4) Finish rolling of the billet: After being conveyed, it enters the finish rolling mechanism. The finish rolling adopts speed-up rolling, and the finish rolling starting temperature is set at 980 - 1020 °C; the finish rolling ending temperature is 720 - 880 °C.

[0064] 5) Laminar flow cooling: The temperature of the steel plate after being cooled by the cooling device is controlled at 500 - 540 °C. When the duplex stainless steel plate 7 is being conveyed in the cooling device, first, the surface impurities are cleaned by the cleaning mechanism 6, then water is sprayed through the spray pipe 9 for cooling, and then the duplex stainless steel plate 7 is corrected and straightened by the straightening mechanism 8 to avoid warping. During the subsequent conveying process, the surface water liquid is cleaned by the blowing mechanism 10, and the temperature measuring mechanism 11 measures the temperature of different regions of the duplex stainless steel plate 7. For the places with higher temperature, targeted temperature reduction treatment is carried out by the cooling mechanism 2.

[0065] 6) Coil the steel plate in sequence.

[0066] Step 5) The cooling device in laminar flow cooling includes a frame 1, on which a cleaning mechanism 6, a spray pipe 9, a straightening mechanism 8, a purging mechanism 10, a temperature measuring mechanism 11, and a cooling mechanism 2 are successively arranged. The cooling mechanism 2 includes an adjusting mechanism 3 and a pair of spray mechanisms 4. According to the actual use situation, the cleaning mechanism, the spray pipe 9, and the purging mechanism 10 are also arranged below the frame 1, which are symmetric with the cleaning mechanism 6, the spray pipe 9, and the purging mechanism 10 arranged above; several groups of spray pipes 9 are evenly arranged, and several groups of cooling mechanisms 2 are evenly arranged.

[0067] The straightening mechanism 8 includes a sixth support plate 81, a sixth electric push rod 82, a fifth guide shaft 83, a seventh support plate 84, and straightening rollers 85; the sixth support plate 81 is fixedly connected to the frame 1, the sixth electric push rod 82 is fixed on the sixth support plate 81, the seventh support plate 84 is arranged below the sixth support plate 81, fifth guide shafts 83 are arranged at both ends of the seventh support plate 84, the fifth guide shafts 83 are slidably connected to the frame 1, the top shaft of the sixth electric push rod 82 is fixedly connected to the seventh support plate 84, and a pair of rotating straightening rollers 85 are arranged on the seventh support plate 84; the straightening rollers 85 are hollow, water outlet holes are arranged on the straightening rollers 85, a guide groove 851 is arranged at one end of the straightening roller 85, the guide groove 851 is an annular and closed-loop groove with the head and tail connected, a rotary joint 87 is arranged at the other end of the straightening roller 85 and connected to an external water supply mechanism, an installation block 86 is arranged at one end of the seventh support plate 84, and a second limiting shaft 861 is arranged on the installation block 86 and arranged in the guide groove 851; by pushing the seventh support plate 84 and the straightening rollers 85 up and down through the sixth electric push rod 82, the straightening rollers 85 are pressed according to the thickness of the duplex stainless steel plate 7, and the straightening rollers 85 and the roller shaft 101 for transmission on the frame 1 are symmetrically matched up and down to achieve the straightening effect; then the water outlet holes on the straightening rollers 85 discharge water to improve the cooling effect. Further, the movement of the second limiting shaft 861 in the guide groove 851 drives the straightening rollers 85 to slide left and right while rotating, so that the water flow flowing out of the water outlet is spread out in a fan shape, making the temperature reduction effect more uniform.

[0068] The purging mechanism 10 includes an eighth support plate 1001, the eighth support plate 1001 is fixedly connected to the frame, a seventh electric push rod 1002 is arranged on the eighth support plate 1001, a purging box 1003 fixedly connected to the top end of the top shaft of the seventh electric push rod 1002 is arranged on the eighth support plate 1001, and an air inlet pipe 1004 connected to an external air supply mechanism is arranged on one side of the purging box 1003; two groups of purging boxes 1003 are arranged, each group has a pair and is arranged front and back, and the purging directions of the two groups are opposite. After purging in opposite directions by the two groups of purging boxes 1003, the water liquid on the surface of the duplex stainless steel plate 7 is removed, which is beneficial to improving the temperature measurement accuracy of the subsequent temperature measuring mechanism 11.

[0069] The temperature measuring mechanism 11 includes a ninth support plate 1102, which is fixedly connected to the frame 1. A number of temperature detectors 1101 are provided on the ninth support plate 1102. The temperature detectors 1101 adopt the infrared induction principle. The duplex stainless steel plate 7 is divided into several regions by the temperature detectors 1101 for targeted temperature measurement. The regions with too high temperature are subjected to targeted water spraying and cooling by the cooling mechanism 2.

[0070] The cleaning mechanism 6 includes a fourth support plate 61, and both ends of the fourth support plate 61 are fixedly connected to the frame 1. A fifth support plate 63 is provided below the fourth support plate 61. Third guide shafts 631 are provided at both ends of the fifth support plate 63 and are slidably connected to the frame 1. A fifth electric push rod 62 is provided on the fourth support plate 61, and the top shaft of the fifth electric push rod 62 is fixedly connected to the fifth support plate 63. A Z-shaped plate 64 is provided below the fifth support plate 63. A screw rod 642 is provided on one side of the Z-shaped plate 64 and passes through the fifth support plate 63. The screw rod 642 is fixed by a nut 643. A second spring 644 is sleeved on the screw rod 642, and the second spring 644 abuts against the fifth support plate 63 and the Z-shaped plate 64. A fourth guide shaft 641 is also provided on the Z-shaped plate 64 and is slidably connected to the Z-shaped plate 64. A second motor 67 is provided on the Z-shaped plate 64. A rotating cleaning roller 66 is provided below the Z-shaped plate 64. The cleaning roller 66 is a cloth sticking roller and is used to adhere to the impurities on the surface of the duplex stainless steel plate 7. The cleaning roller 66 is driven to rotate by the second motor 67.

[0071] A second box body 68 is provided on one side of the cleaning roller 66 and is fixed on the Z-shaped plate 64. An air inlet 683 and a scraper 682 are provided on one side of the second box body 68. The scraper 682 scrapes the cleaning roller 66. A third motor 681 is provided on one side of the second box body 68.

[0072] An air volume adjusting mechanism 69 is provided inside the second box body 68, including a second rotating shaft 693. A second connecting arm 691 is provided on the second rotating shaft 693. An arc-shaped plate 692 is provided on the second connecting arm 691. The arc-shaped plate 692 fits the inner wall of the second box body 68. One end of the second rotating shaft 693 is connected to the third motor 681. The third motor 681 drives the second rotating shaft 693 to rotate through a chain and a sprocket, and then drives the arc-shaped plate 692 to rotate to control the size of the air inlet 683, so as to realize the adjustment and control of the negative pressure adsorption force.

[0073] A first box body 65 is provided on one side of the second box body 68. A connecting pipe 652 is provided on one side of the first box body 65 and is connected to the second box body 68. An air pipe 651 is provided on one side of the first box body 65 and is connected to an external negative pressure adsorption power mechanism. The impurities adhered by the cleaning roller 66 are subjected to negative pressure adsorption treatment through the first box body 65 and the second box body 68, so that the cleaning roller 66 can maintain a long-time cleaning operation.

[0074] The adjusting mechanism 3 includes a first electric push rod 31, a first support plate 32, and a second support plate 33. The first support plate 32 is fixedly connected to the frame 1. The second support plate 33 is arranged below the first support plate 32. The first electric push rod 31 is fixed on the first support plate 32. The top shaft of the first electric push rod 31 is fixedly connected to the second support plate 33. Both ends of the second support plate 33 are provided with first guide shafts 34 and are slidably connected to the frame 1.

[0075] The spraying mechanism 4 includes a second electric push rod 41, a third support plate 42, a first pipe 43, and a second pipe 44. The second electric push rod 41 is fixed on the second support plate 33. The top shaft of the second electric push rod 41 is fixedly connected to the third support plate 42. A telescopic column 421 is arranged between the third support plate 42 and the second support plate 33 for telescopic guiding. The third support plate 42 is fixedly connected to the first pipe 43. The second pipe 44 is connected to the first pipe 43. A water storage tank 47 is arranged on the second pipe 44. A connecting pipe 473 is arranged on the water storage tank 47. A plurality of spray pipes 45 are arranged on the connecting pipe 473. The spray pipes 45 are movably connected to the connecting pipe 473 through ball heads. A limiting hole 472 and a mounting bracket 471 are arranged in the middle of the water storage tank 47. The distance between the spray pipes 45 and the duplex stainless steel plate 7 is controlled by controlling the up and down movement of the third support plate 42, the first pipe 43, and the second pipe 44 through the second electric push rod 41.

[0076] A first water inlet pipe 431 is arranged on one side of the first pipe 43 for water inlet.

[0077] A first through hole 441 and a second through hole 442 are arranged on the second pipe 44. A second water inlet pipe 444 is arranged on one side of the second pipe 44.

[0078] A water volume control mechanism 48 and a closing mechanism 5 are arranged inside the second pipe 44. A drain pipe 443 is arranged on one side of the second pipe 44 and is connected to the closing mechanism 5. The water volume control mechanism 48 includes a first rotating shaft 483 and a first motor 485. A first connecting arm 481 is arranged on the first rotating shaft 483. A top plate 482 is arranged at the end of the first connecting arm 481. A water permeable hole 4821 is arranged on the top plate 482. A filter membrane is arranged on the water permeable hole 4821 for filtering and anti-blocking. The first motor 485 is connected to the end of the first rotating shaft 483. The first motor 485 is fixed on one side of the second pipe 44. Four sets of the top plates 482 are arranged. The diameters of the water permeable holes 4821 on each set of the top plates 482 are different. A wedge angle is arranged on one side of the first connecting arm 481. By driving the first rotating shaft 483 to rotate through the first motor 485, the water permeable hole 4821 on the top plate 482 is aligned with the first through hole 441 to conduct water, so as to realize water inlet with different amounts.

[0079] The closing mechanism 5 includes a sealing plate 51, an L-shaped support arm 533, a second guide shaft 534, and a first spring 532. A pair of sealing blocks 53 are provided at both ends of the sealing plate 51. The sealing blocks 53 are inserted into both ends of the second pipe 44. The sealing blocks 53 are provided with a wedge angle 535 and a fixing block 531. The L-shaped support arm 533 and the second guide shaft 534 are fixedly connected to the end of the second pipe 44. The second guide shaft 534 is slidably connected to the fixing block 531. The second guide shaft 534 is fixedly connected to the L-shaped support arm 533. The first spring 532 is sleeved on the second guide shaft 534. The first spring 532 abuts against the L-shaped support arm 533 and the fixing block 531, pushing the sealing block 53 to be inserted into the end of the sealing plate 51 to support it; Sealing strips 52 are provided on both sides of the sealing plate 51. The sealing strips 52 are elastically connected to the sealing plate 51 and can retract into the interior of the sealing plate 51 when being squeezed. The sealing plate 51, the sealing strips 52, and the sealing blocks 53 cooperate with the second pipe 44 to form a closed space inside the second pipe 44 and connect the drain pipe 443 and the second through hole 442; When the first rotating shaft 483 rotates, it drives the top plate 482 to press the sealing strip 52 and then enter the above-mentioned closed space. The water in the first pipe 43 enters the closed space through the second through hole 442. During this process, the filter membrane on the water permeable holes 4821 on the top plate 482 is backflushed, and the sundries are discharged along the drain pipe 443 to keep the filter membrane unblocked; The wedge angle on the first connecting arm 481 fits the wedge angle 535 on the sealing block 53.

[0080] A control mechanism 46 is provided on the water storage tank 47, including a fixed frame 461, a first sleeve 462, an adjustment column 463, a third electric push rod 464, an adjustment arm 465, a control shaft 467, a control arm 468, and a fourth electric push rod 469; the first sleeve 462 is fixedly connected to the fixed frame 461, a flange 4621 is provided at the bottom of the first sleeve 462 and is arranged on the mounting frame 471, and the flange 4621 is arranged on both sides of the mounting frame 471 for limiting; the adjustment column 463 is sleeved on the first sleeve 462; one end of the adjustment column 463 is provided with an adjustment frame 4633, an adjustment shaft 4631 is provided on the adjustment frame 4633, and the other end of the adjustment column 463 is provided with a limit shaft 4632 corresponding to the limit hole 472; the third electric push rod 464 is fixed on the fixed frame 461, and the top shaft of the third electric push rod 464 is fixedly connected to the adjustment frame 4633; the adjustment column 463 is driven to move up and down by the third electric push rod 464; symmetrically arranged fixed arms 4622 are provided on the first sleeve 462, support arms 4623 are provided on the fixed arms 4622, and a collar 4624 is provided at one end of the fixed arm 4622; adjustment slots 4651 are provided at both ends of the adjustment arm 465, a second pin shaft 4652 is provided on the adjustment arm 465 and is rotatably connected to the support arm 4623; the adjustment slot 4651 at one end of the adjustment arm 465 is movably connected to the adjustment shaft 4631; a control plate 4681 is provided on the control arm 468, one end of the control plate 4681 is rotatably connected to the control arm 468, the control plate 4681 is fixedly connected to the spray pipe 45, a second sleeve 4683 is provided at one end of the control arm 468 and is rotatably connected to the collar 4624, and a plurality of slots 4682 are provided on the second sleeve 4683; a first pin shaft 4672 is provided at one end of the control shaft 467, the first pin shaft 4672 is arranged in the adjustment slot 4651, a limit block 4671 is provided on the control shaft 467, and the limit block 4671 is inserted into the slot 4682 to lock the rotational relationship between the fixed arm 4622 and the control arm 468; the fourth electric push rod 469 is fixed on one side of the water storage tank 47, a third connecting arm 4691 is provided on the top shaft of the fourth electric push rod 469, and the third connecting arm 4691 is fixedly connected to the control arm 468; the fourth electric push rod 469 is used to push the control arm 468 to reciprocate, thereby controlling the spraying angle of the spray pipe 45.

[0081] A device for preventing the breakage of a super duplex stainless steel hot rolled coil strip works as follows:

[0082] After the duplex stainless steel plate 7 is finish rolled, first, the cleaning mechanism 6 is used to clean its surface, and then the cooling mechanism 2 is used to cool it.

[0083] When cleaning the surface, first, the fifth electric push rod 62 is used to control the up and down movement of the fifth support plate 63 along the third guide shaft 631, thereby driving the Z-shaped plate 64 and the cleaning roller 66 to move up and down. Among them, the second spring 644 plays a buffering effect on the Z-shaped plate 64; the elastic force of the second spring 644 can be adjusted by rotating the nut 643; then, the second motor 67 drives the cleaning roller 66 to rotate to clean the impurities and sundries adhering to the surface of the duplex stainless steel plate 7. After the cleaning roller 66 rotates, the sundries adhering to it are scraped off by the scraper 682. Further, the first box body 65 and the second box body 68 are connected by an air pipe 651 to an external negative pressure adsorption power mechanism to provide power for negative pressure adsorption to suck off the sundries and impurities on the scraper 682; at the same time, the third motor 681 drives the second rotating shaft 693 to rotate, thereby driving the arc-shaped plate 692 to rotate to control the size of the air inlet 683, so as to realize the adjustment and control of the negative pressure adsorption force.

[0084] When the cooling mechanism 2 is cooling, first, the adjusting mechanism 3 can be used to control the height of the second support plate 33 to adjust the distance between the spraying mechanism 4 and the duplex stainless steel plate 7, so that it can fully play and realize the spraying effect. Further, the height of the third support plate 42 can also be adjusted by the second electric push rod 41 to drive the spray pipe 45 to realize height adjustment.

[0085] When the spray pipe 45 sprays water, water is supplied into the second pipeline 44 through the second water inlet pipe 444, then the water enters the water storage tank 47 and is sprayed out through the spray pipe 45; among them, the spraying angle of the spray pipe 45 can be controlled by the control mechanism 46 for targeted spraying on the overheated area; first, the third electric push rod 464 is used to control the movement of the adjusting column 463 so that the limiting shaft 4632 is inserted into the limiting hole 472 to fix the first sleeve 462 so that it cannot slide on the mounting frame 471. Then, the fourth electric push rod 469 is used to push the control arm 468 to move, and then the control arms 468 on both sides of the first sleeve 462 are pushed to move in the opposite direction with the first sleeve 462 as the axis. Then, the spray pipe 45 is controlled to rotate around the ball head through the control board 4681, thereby realizing the adjustment of the spraying angle, so that the spray pipes 45 on both sides of the first sleeve 462 are concentrated and sprayed towards the center direction; further, the third electric push rod 464 drives the adjusting column 463 to rise to release the insertion state of the limiting shaft 4632 and the limiting hole 472. At the same time, when the third electric push rod 464 drives the adjusting column 463 to lift, it will drive one end of the adjusting arm 465 to rise. Then, through the other end of the adjusting arm 465, the control shaft 467 is pressed down, so that the limiting block 4671 is inserted into the slot 4682 on the second sleeve 4683 to lock the rotational relationship between the control arm 468 and the fixed arm 4622 so that it cannot rotate randomly; at this time, using the fourth electric push rod 469 to push the control arm 468 can drive the overall spraying angle of the spray pipe 45 to be adjusted uniformly. At this time, the spray pipe 45 can be tilted as a whole to one side.

[0086] Further, the first motor 485 drives the first rotating shaft 483 to rotate, thereby driving the top plate 482 to rotate within the second pipe 44, causing the water permeable holes 4821 on different top plates 482 to communicate with the first through holes 441, so as to control different water inflows and shooting speeds. Secondly, when the top plate 482 rotates, the seal strip 52 touched by the top plate 482 causes the seal strip 52 to retract into the sealing plate 51. Then, the top plate 482 enters the enclosed space and aligns the water permeable holes 4821 with the second through holes 442. Then, the water in the first pipe 43 enters the enclosed space through the second through holes 442 to backflush the filter membrane on the water permeable holes 4821, and the debris on the filter membrane is discharged along the drain pipe 443 by the water flow. By the above measures, the blockage rate of the water inlet of the nozzle 45 can be reduced. During this process, the first connecting arm 481 pushes the wedge angle 535 on the sealing block 53 to cause the sealing block 53 to withdraw from the plugged state with the sealing plate 51. Then, after the first connecting arm 481 continues to rotate, it fits with the wedge angle 535 of the second sealing block 53 to form an enclosed space. Throughout the process, there is always a sealing block 53 in the plugged state with the sealing plate 51, thereby maintaining the support and fixation of the sealing plate 51.

[0087] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0088] In summary, including but not limited to electronic or electrical components such as electric push rods, motors, etc. are components in the prior art, obtained through private customization or purchase. The electrical connections between the components are all conventional circuit connections or electrical connections in the prior art, and are not within the protection scope of the present invention;

[0089] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A device for preventing breakage of a hot-rolled coil of super duplex stainless steel, including a cooling device in laminar flow cooling, the cooling device including a frame, characterized in that The rack is provided with a cleaning mechanism, a spray pipe, a straightening mechanism, a purging mechanism, a temperature measuring mechanism and a cooling mechanism in sequence. The cooling mechanism includes an adjusting mechanism and a pair of spray mechanisms. According to actual usage, the cleaning mechanism, the spray pipe and the purging mechanism are also arranged below the rack, and are symmetrical to the cleaning mechanism, the spray pipe and the purging mechanism arranged above. The spray pipes are provided with several groups and are evenly arranged, and the cooling mechanisms are provided with several groups and are evenly arranged.

2. The device for preventing the breakage of a super duplex stainless steel hot-rolled coil strip according to claim 1, wherein The straightening mechanism includes a sixth support plate, a sixth electric push rod, a fifth guide shaft, a seventh support plate, and a straightening roller; the sixth support plate is fixedly connected to the frame, the sixth electric push rod is fixed on the sixth support plate, the seventh support plate is arranged below the sixth support plate, both ends of the seventh support plate are provided with fifth guide shafts, the fifth guide shaft is slidably connected to the frame, the top shaft of the sixth electric push rod is fixedly connected to the seventh support plate, and a pair of rotating straightening rollers are arranged on the seventh support plate; the straightening roller is hollow, a water outlet hole is arranged on the straightening roller, a guide groove is arranged at one end of the straightening roller, the guide groove is arranged as a ring-shaped closed-loop groove connected end to end, and a rotating joint is arranged at the other end of the straightening roller And connected to the external water supply mechanism, one end of the seventh support plate is provided with a mounting block, the mounting block is provided with a second limiting shaft and is arranged in the guide groove; the seventh support plate and the straightening roller are pushed up and down by the sixth electric push rod, so that the straightening roller is pressed according to the thickness of the duplex stainless steel plate, and the straightening roller and the roller shaft for transmission on the frame are symmetrically matched up and down to achieve the straightening effect; then the water outlet of the water hole on the straightening roller can improve the cooling effect, and further the movement of the second limiting shaft in the guide groove drives the straightening roller to slide left and right at the same time when rotating, so that the water flow out of the outlet is spread out in a fan shape, so that the cooling effect is more uniform.

3. A device for preventing strip breakage of a super duplex stainless steel hot-rolled coil according to claim 1, characterized in that The purge mechanism includes an eighth support plate, the eighth support plate is fixedly connected to the frame, the eighth support plate is provided with a seventh electric push rod, the top shaft end of the seventh electric push rod is provided with a fixedly connected purge box, and one side of the purge box is provided with an air inlet pipe connected to an external air supply mechanism; the purge box is provided with two groups, each group is provided with a pair and arranged front and back, and the two groups purge in opposite directions. After the two groups of purge boxes purge in opposite directions, the water on the surface of the duplex stainless steel plate is removed, which is conducive to improving the temperature measurement accuracy of the subsequent temperature measuring mechanism; The temperature measuring mechanism includes a ninth support plate, which is fixedly connected to the frame and is provided with a plurality of temperature detectors, which adopt the infrared sensing principle. The duplex stainless steel plate is divided into a plurality of areas for targeted temperature measurement by the temperature detectors, and the areas with excessively high temperature are subjected to targeted water spray cooling by the cooling mechanism.

4. A device for preventing the breakage of a super duplex stainless steel hot-rolled coil strip according to claim 1, characterized in that The cleaning mechanism includes a fourth support plate, with both ends of the fourth support plate fixedly connected to the frame. A fifth support plate is provided below the fourth support plate. Third guiding shafts are provided at both ends of the fifth support plate and are slidably connected to the frame. A fifth electric push rod is provided on the fourth support plate, and the top shaft of the fifth electric push rod is fixedly connected to the fifth support plate; A Z-shaped plate is provided below the fifth support plate. A screw rod is provided on one side of the Z-shaped plate and passes through the fifth support plate, and the screw rod is fixed by a nut; A second spring is sleeved on the screw rod, and the second spring abuts against the fifth support plate and the Z-shaped plate; A fourth guiding shaft is also provided on the Z-shaped plate and is slidably connected to the Z-shaped plate; A second motor is provided on the Z-shaped plate; A rotating cleaning roller is provided below the Z-shaped plate. The cleaning roller is a sticky cloth roller and is used to adhere to impurities on the surface of the duplex stainless steel plate; The cleaning roller is driven to rotate by the second motor.

5. The device for preventing the breakage of a super duplex stainless steel hot-rolled coil strip according to claim 4, characterized in that A second box body is provided on one side of the cleaning roller and is fixed on the Z-shaped plate; An air inlet and a scraper are provided on one side of the second box body, and the scraper scrapes the cleaning roller; A third motor is provided on one side of the second box body; A air volume regulating mechanism is provided inside the second box body, including a second rotating shaft. A second connecting arm is provided on the second rotating shaft, and an arc-shaped plate is provided on the second connecting arm. The arc-shaped plate fits the inner wall of the second box body. One end of the second rotating shaft is connected to the third motor; The third motor drives the second rotating shaft to rotate through a chain and a sprocket, thereby driving the arc-shaped plate to rotate to control the size of the air inlet, so as to realize the adjustment and control of the negative pressure adsorption force; A first box body is provided on one side of the second box body. A connecting pipe is provided on one side of the first box body and is connected to the second box body; An air pipe is provided on one side of the first box body and is connected to an external negative pressure adsorption power mechanism; The impurities adhered to the cleaning roller are subjected to negative pressure adsorption treatment through the first box body and the second box body, so that the cleaning roller can maintain long-term cleaning work.

6. The device for preventing the breaking of a super duplex stainless steel hot-rolled coil strip according to claim 1, characterized in that The adjusting mechanism includes a first electric push rod, a first support plate, and a second support plate. The first support plate is fixedly connected to the frame. The second support plate is provided below the first support plate. The first electric push rod is fixed on the first support plate, and the top shaft of the first electric push rod is fixedly connected to the second support plate. First guiding shafts are provided at both ends of the second support plate and are slidably connected to the frame; The spraying mechanism includes a second electric push rod, a third support plate, a first pipe, and a second pipe; The second electric push rod is fixed on the second support plate, and the top shaft of the second electric push rod is fixedly connected to the third support plate. A telescopic column is provided between the third support plate and the second support plate for telescopic guiding; The third support plate is fixedly connected to the first pipe, the second pipe is connected to the first pipe, a water storage tank is provided on the second pipe, a connecting pipe is provided on the water storage tank, and a plurality of spray pipes are provided on the connecting pipe. The spray pipes are movably connected to the connecting pipe through ball heads. A limiting hole and a mounting bracket are provided in the middle of the water storage tank; The second electric push rod is used to control the up and down movement of the third support plate, the first pipe, and the second pipe to control the distance between the spray pipes and the duplex stainless steel plate; A first water inlet pipe is provided on one side of the first pipe for water inlet; First through holes and second through holes are provided on the second pipe, and a second water inlet pipe is provided on one side of the second pipe.

7. The device for preventing the breakage of a super duplex stainless steel hot-rolled coil strip according to claim 6, characterized in that Inside the second pipeline, a water volume control mechanism and a sealing mechanism are provided. One side of the second pipeline is provided with a drain pipe which is connected to the sealing mechanism. The water volume control mechanism includes a first rotating shaft and a first motor. A first connecting arm is provided on the first rotating shaft. A top plate is provided at the end of the first connecting arm. Water permeable holes are provided on the top plate. Filter membranes are provided on the water permeable holes for filtering and preventing blockage. The first motor is connected to the end of the first rotating shaft, and the first motor is fixed on one side of the second pipeline. Four sets of the top plates are provided, and the diameters of the water permeable holes on each set of top plates are different. A wedge angle is provided on one side of the first connecting arm. By driving the first rotating shaft to rotate through the first motor, the water permeable holes on the top plate are aligned with the first through holes to conduct water, so as to realize water inflows of different sizes.

8. The device for preventing the breaking of the hot-rolled coil of super duplex stainless steel according to claim 7, characterized in that The sealing mechanism includes a sealing plate, an L-shaped support arm, a second guide shaft, and a first spring. A pair of sealing blocks are provided at both ends of the sealing plate. The sealing blocks are inserted into both ends of the second pipeline. Wedge angles and fixing blocks are provided on the sealing blocks. The L-shaped support arm and the second guide shaft are fixedly connected to the end of the second pipeline. The second guide shaft is slidably connected to the fixing block. The second guide shaft is fixedly connected to the L-shaped support arm. The first spring is sleeved on the second guide shaft. The first spring abuts against the L-shaped support arm and the fixing block to push the sealing blocks to be inserted into the end of the sealing plate to support it. Sealing strips are provided on both sides of the sealing plate. The sealing strips are elastically connected to the sealing plate and can retract into the inside of the sealing plate when being squeezed. The sealing plate, the sealing strips, and the sealing blocks cooperate with the second pipeline to form a closed space inside the second pipeline and connect the drain pipe and the second through hole. When the first rotating shaft rotates, it drives the top plate to press the sealing strip and then enter the above-mentioned closed space. The water in the first pipeline enters the closed space through the second through hole. During this process, the filter membrane on the water permeable hole on the top plate is backflushed, and the sundries are discharged along the drain pipe to keep the filter membrane unblocked. The wedge angle on the first connecting arm fits with the wedge angle on the sealing block.

9. A device for preventing breakage of a super duplex stainless steel hot-rolled coil strip according to claim 6, characterized in that A control mechanism is provided on the water storage tank, including a fixed frame, a first sleeve, an adjustment column, a third electric push rod, an adjustment arm, a control shaft, a control arm, and a fourth electric push rod; the first sleeve is fixedly connected to the fixed frame, a flange is provided at the bottom of the first sleeve and is arranged on the mounting frame, and the flange is arranged on both sides of the mounting frame for limiting; the adjustment column is sleeved on the first sleeve; one end of the adjustment column is provided with an adjustment frame, an adjustment shaft is provided on the adjustment frame, and a limit shaft is provided at the other end of the adjustment column corresponding to a limit hole; the third electric push rod is fixed on the fixed frame, and the top shaft of the third electric push rod is fixedly connected to the adjustment frame; the adjustment column is driven to move up and down by the third electric push rod; symmetrically arranged fixed arms are provided on the first sleeve, support arms are provided on the fixed arms, and a collar is provided at one end of the fixed arm; adjustment slots are provided at both ends of the adjustment arm, a second pin shaft is provided on the adjustment arm and is rotatably connected to the support arm; the adjustment slot at one end of the adjustment arm is movably connected to the adjustment shaft; a control board is provided on the control arm, one end of the control board is rotatably connected to the control arm, the control board is fixedly connected to the spray pipe, a second sleeve is provided at one end of the control arm and is rotatably connected to the collar, and a plurality of slots are provided on the second sleeve; a first pin shaft is provided at one end of the control shaft, the first pin shaft is arranged in the adjustment slot, a limit block is provided on the control shaft, and the limit block is inserted into the slot to lock the rotational relationship between the fixed arm and the control arm; the fourth electric push rod is fixed on one side of the water storage tank, a third connecting arm is provided on the top shaft of the fourth electric push rod, and the third connecting arm is fixedly connected to the control arm; the fourth electric push rod is used to push the control arm to reciprocate, thereby controlling the spraying angle of the spray pipe.

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