Device and method for eliminating iron scale press-in defect of hot-rolled stainless steel composite plate

Abstract

The device comprises a descaling mechanism and a cleaning mechanism, the descaling mechanism is arranged at the front end of the cleaning mechanism, a plate blank of a stainless steel plate is sequentially subjected to heating, the descaling mechanism, rough rolling and finish rolling to complete the rolling process, the descaling mechanism conducts high-temperature and high-pressure steam descaling on the heated plate blank, and the cleaning mechanism is arranged at the front end of the cleaning mechanism. And then the surface of the roller is cleaned through a cleaning mechanism in the finish rolling section. Firstly, oxide skin on a heated plate blank can be preliminarily cleaned in batches through the descaling mechanism; secondly, oxide skin attached to the surface of the roller and an oxidation film generated when the roller is heated can be removed through the cleaning mechanism, cooling circulation is conducted in the roller through cooling water again, the temperature of the roller is reduced, and then the oxidation film on the surface layer of the roller is reduced; through the mutual combination, the iron scale press-in defect is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of stainless steel rolling, and in particular relates to a device and a method for eliminating scale indentation defects of a hot-rolled stainless steel composite plate. Background Art

[0002] The rolling process of stainless steel plates is accompanied by various production defects, including the intrusion of iron scale on the surface of the stainless steel plate. Iron scale intrusion is the defect formed by the oxide scale being pressed into the stainless steel plate during rolling. Therefore, in order to reduce the occurrence of the above defects, the oxide scale needs to be effectively cleaned. The generation and source of the oxide scale are mainly from the following aspects: First, the oxide scale generated on the surface after the slab is heated. The oxide scale here is larger; second, the oxide film is generated on the surface of the roller after it is heated during the continuous rolling of the slab, and there is a possibility of pressing into the stainless steel plate; treating the above sources is helpful to reduce the occurrence of iron scale intrusion defects;

[0003] After searching, the prior art publication number CN117399430A is a roller cleaning device for hot rolling mill working rolls and a method of use. The mounting plate and the scraper are provided with corresponding positioning long holes, the scraper is arranged in the mounting plate, and positioning bolts are arranged between the scraper and the mounting plate. Adjustment bolts are evenly distributed on the upper surface of the mounting plate. A pair of baffles are arranged at the left and right ends of the mounting plate, stud bolts are arranged between the bracket and the baffle, and pressure springs are arranged on the periphery of the stud bolts. A set of roller cleaning devices is installed on the upper and lower working rolls of the hot rolling mill, and the roller cleaning device is provided with bearing seats at both ends of the working rolls of the hot rolling mill. The scraper is installed at a fixed point, the center plane of the longitudinal section of the scraper is perpendicular to the tangent line of the roller surface and passes through the axis. The adjustment spring on the roller cleaning device allows the scraper and the roller to maintain a certain contact force. The above method can clean the surface of the roller, but lacks a corresponding method for recycling waste. The forward and reverse rotation of the roller will form different waste landing areas, so different collection methods are required. The waste collection method in the prior art may not be applicable to the forward and reverse rotation of the roller, so a corresponding disposal method is required, but this solution does not provide a corresponding disposal method.

[0004] The device for cleaning the oxide scale on the surface of the rolling mill roll with the prior art announcement number CN212683508U comprises a frame, a rotating motor fixedly mounted on the frame, a fixed grinding roller, a lifting mechanism, and an active grinding roller rotatably mounted on the frame, one end of the active grinding roller is connected to the rotating motor through a transmission assembly, and a collecting box is also provided at the bottom of the frame, a lifting frame is installed at the lifting end of the lifting mechanism, a slide guide rail is installed at the lower end of the lifting frame, a bidirectional lead screw is installed at both ends of the lifting frame, two nut seats of the bidirectional lead screw are slidably mounted in the slide guide rail, a spring rod is vertically fixed at the lower end of the nut seat, and a frosted pressing block is fixedly installed at the lower end of the spring rod; the above means are obviously to clean the surface of the rolling mill roll after disassembly, however, the oxide scale on the surface of the rolling mill roll during the rolling process is the problem that needs to be cleaned and solved in time, and it is obvious that the above method cannot clean the rolling mill roll during the rolling process, so the defect of iron scale pressing will still occur or appear. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device and method for eliminating the iron scale indentation defect of hot-rolled stainless steel composite plate. First, the scale removal mechanism can perform preliminary and batch cleaning of the oxide scale on the heated slab; secondly, the cleaning mechanism can remove the oxide scale attached to the surface of the roller and the oxide film generated by the roller itself when heated, and thirdly, the cooling water is circulated in the roller to reduce the temperature of the roller and thereby reduce the generation of oxide film on the surface of the roller; the above combination reduces the generation of iron scale indentation defect.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A device for eliminating the iron scale indentation defect of a hot-rolled stainless steel composite plate comprises a descaling mechanism and a cleaning mechanism. The descaling mechanism is arranged at the front end of the cleaning mechanism. The slab of the stainless steel plate is successively subjected to heating, descaling mechanism, rough rolling and finishing rolling to complete the rolling process. The descaling mechanism descales the heated slab with high-temperature and high-pressure steam, and then the surface of the finishing roller is cleaned by the cleaning mechanism in the finishing rolling section.

[0008] The cleaning mechanism includes a horizontal plate, a vertical plate, a scraping mechanism, a power mechanism, and a material receiving magazine; the horizontal plate is fixedly connected to the vertical plate, the material receiving magazine is fixed at the bottom of the vertical plate, and the scraping mechanism is arranged above the material receiving magazine; the horizontal plate is provided with a first return groove, the first return groove includes a first front groove and a first return groove that are interconnected; first guide plates are provided at both ends of the first return groove and are parallel to each other, a first connecting column is provided on the first guide plate and is rotatably connected to the horizontal plate, a first push plate is provided on the first connecting column, a tension spring and a first limit plate are provided on one side of the first push plate, the first limit plate and the first push plate are fixedly connected at both ends of the tension spring, and the first limit plate is fixed on the horizontal plate, and the first guide plate is pulled by the tension spring to close one end port of the first front groove and the first return groove respectively, so that the first guide plate can play a guiding role.

[0009] The vertical plate is provided with a second return groove and a plurality of sliding grooves, the second return groove is arranged below the sliding groove, the second return groove includes a second front groove and a second retracting groove which are interconnected, a second guide plate is provided at the end of the second front groove, a second connecting column is provided on the second guide plate, the second connecting column is rotatably connected to the vertical plate, a second push plate is provided on the second connecting column, a second spring and a third limit plate are provided on one side of the second push plate, the third limit plate is fixed on the vertical plate, and both ends of the second spring are fixedly connected to the second push plate and the third limit plate; the second guide plate is pushed by the second spring to close a port at one end of the second front groove.

[0010] The scraping mechanism includes a first scraper, a connecting plate, and a second scraper; a limiting shaft and a supporting shaft are provided on one side of the first scraper and are arranged in a slide groove, the first scraper is in contact with the surface of the roller, and the bottom of the first scraper is fixedly connected to the connecting plate; the top of the second scraper is rotatably connected to the connecting plate; a second limiting plate is provided on the connecting plate to limit the rotation angle of the second scraper, a first guide shaft is provided on the second scraper and is arranged in a second forward groove on the second return groove; the first scraper is provided with replaceable rock wool to wipe the roller area after scraping for further cleaning.

[0011] The power mechanism includes a second motor, a mounting frame, a reciprocating screw, and a fixed block; both ends of the reciprocating screw are fixed to the vertical plate through a fixed seat, the second motor is fixed on the fixed seat and the motor output shaft is connected to one end of the reciprocating screw, one side of the mounting frame is fixedly connected to the support shaft, a second guide shaft is provided on the mounting frame and is arranged in the first forward groove on the first return groove, a through groove is also provided on the mounting frame, the fixed block is arranged in the through groove, and the fixed block is threadedly connected to the reciprocating screw; the mounting frame is driven by the second motor to move along the first return groove.

[0012] The descaling mechanism is provided with two groups of mirror-image settings and fixed on the first frame, and the descaling mechanism includes a first frame, a pipeline, an adjustment plate, a mounting seat, a first motor, an electric push rod, and a rotating shaft; the pipeline is provided with two groups and is staggered and arranged up and down, and one end of the pipeline is connected to an externally arranged high-pressure steam supply device; gears are provided at both ends of the pipeline and mesh with each other; an expansion slot is provided on the first frame, and both ends of the pipeline are rotatably connected to the first frame, and a nozzle is provided on the pipeline, and the nozzle on the upper pipeline is longer than the nozzle on the lower pipeline, so that the flushing positions of the two are connected front and back without duplication, a ball head is provided at one end of the nozzle and movably connected to the pipeline, and a fixed column is provided on the nozzle; an adjustment slot is provided on the adjustment plate, and the fixed column is provided with a In the adjustment slot, a fixedly connected support arm and a hingedly connected adjustment arm are provided at both ends of the adjustment plate, the support arm is slidably connected to the first frame, and the adjustment arm is arranged in the expansion slot; the mounting seat is fixed on one side of the first frame; the rotating shaft is rotatably connected to the mounting seat, a gear is provided on the rotating shaft, fixed arms are provided at both ends of the rotating shaft, a pin is provided on the fixed arm, and the pin is rotatably connected to the adjustment arm; the fixed arms at both ends of the rotating shaft are arranged in parallel so that the pins at both ends have the use effect of a crankshaft; the first motor is fixed on the mounting seat, and a gear is provided at the shaft end of the first motor and meshes with the gear on the rotating shaft; the rotating shaft is driven to rotate by the first motor, and then the adjustment arm is driven by the pin to pull the adjustment plate to make the upper and lower sets of nozzles swing in the opposite direction to achieve the flushing of the oxide scale.

[0013] The electric push rod is fixed on the first frame, and a rack is provided at the top shaft of the first electric push rod. The rack meshes with the gear at the end of the pipeline, and the rack fits the fourth limit plate to limit its sliding trajectory. The fourth limit plate is fixedly connected to the first frame; the electric push rod pushes the rack to drive the pipeline to rotate, thereby controlling the nozzle flushing positions of the upper and lower sets of pipelines to approach and move away, thereby improving the flushing effect and flushing efficiency.

[0014] The roller is provided with partitions inside to divide the roller into several cooling chambers; the partitions are provided with reinforcement blocks to make them more firmly fixed to the outer cylindrical wall of the roller; fixed shafts are provided at both ends of the roller, and mounting grooves are provided on the fixed shafts, and a water collection chamber is provided at one end of the fixed shaft, a guide pipe is provided in the mounting groove and connected to the cooling chamber inside the roller for separate water circulation, one end of the guide pipe is connected to the water collection chamber, and a bearing is provided on the fixed shaft and is rotatably connected to the second frame; a gear is provided on the fixed shaft at one end of the roller and is connected to an external power device to provide power for it to rotate, and the means by which the external power device provides power to the roller is existing technology, including using a motor as a power output part, which will not be elaborated here; a rotating joint and a water pipe are provided on the water collection chamber and are connected to an external water supply device to form a water circulation to cool the roller and reduce the probability of the formation of an oxide film on the surface of the roller itself.

[0015] A method for using a device for eliminating scale indentation defects of a hot-rolled stainless steel composite plate, the specific steps are as follows:

[0016] S1: Descaling mechanism high-pressure dephosphorization: After the slab is heated, oxide scale will appear, and the descaling mechanism will spray high-pressure steam to flush and remove the oxide scale;

[0017] 1) During the flushing process, the flushing areas formed by the upper and lower sets of pipes and the arrangement of the nozzles are connected in sequence, and the first motor drives the rotating shaft to pull the adjusting plate to move in the opposite direction, and pulls the nozzle to move in the opposite direction so that the flushing directions are crossed and repeatedly swung to help flush away the oxide scale;

[0018] 2) Furthermore, the electric push rod can be used to push the rack to drive the upper and lower sets of pipes to rotate, and the position of the nozzle flushing area can be adjusted to make the flushing areas connect and disengage with each other;

[0019] S2: Stainless steel plate rolling: The stainless steel plate is rolled successively through the rough rolling and finishing rolling set by the conventional process; Elimination of the oxide scale generated by the roller itself: During the finishing rolling process, a cooling circulation system is provided inside the roller to cool the finishing roller. The roller is cooled by the cooling water circulation inside, thereby reducing the probability of the roller generating an oxide film on the surface due to overheating. The cooling water enters the cooling chamber inside the roller through the guide pipe at one end of the roller and then flows out from the guide pipe at the other end to form a stable circulation system, which can effectively prevent the roller from overheating and causing an oxide film to appear on its surface and press into the stainless steel plate;

[0020] S3: Cleaning the surface of the stainless steel plate finishing roller: eliminating the oxide scale adhered to the outside of the roller; using a cleaning mechanism to clean impurities attached to the surface of the roller during rolling, including oxide scale; using a second motor to drive the reciprocating screw to rotate, thereby driving the fixed block and the mounting frame to move; at this time, the second guide shaft slides in the first front groove, so that the first scraper scrapes off the oxide scale attached to the roller, moves to the end of the first front groove and pushes away the first guide plate, and then retreats with the rotation of the reciprocating screw. When retreating, the mounting frame enters the first retreat groove along the second guide shaft and drives the first scraper to detach from the roller to prevent the rock wool from contacting the roller before the first scraper, and the scraped impurities fall into the material receiving box; after the second guide shaft passes over the first guide plate at the end of the first retreat groove, it enters the first front groove under the guidance of the first guide plate;

[0021] Furthermore, the second scraper moves forward with the first scraper, and the first guide shaft on the second scraper moves forward and slides in the second forward groove, then passes over the second guide plate and enters the second retracting groove along the second guide plate, so that the bottom of the second scraper is separated from the contact with the material collecting box to avoid scraping back the remaining impurities and oxide scale; the above reciprocating motion can complete and realize the cleaning of the roller surface.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1) A descaling mechanism and a cleaning mechanism are provided to cooperate with each other to clean the slab and the surface of the roller in the rolling process in real time, avoiding the disadvantage of the need for disassembly and cleaning mentioned in the background technology; during the flushing process of the nozzle in the descaling mechanism, the flushing areas formed by the upper and lower sets of pipes and the arrangement of the nozzles can be connected successively, and the rack can be driven by the electric push rod to drive the upper and lower sets of pipes to rotate, and the position of the nozzle flushing area can be adjusted, so that the flushing areas are connected and disengaged from each other to ensure the flushing effect of the oxide scale; further, the first motor drives the rotating shaft to rotate and then pulls the adjustment plate to move in the opposite direction, and pulls the nozzle to move in the opposite direction to make the flushing directions cross and repeatedly swing, which is helpful to flush the oxide scale;

[0024] 2) When the cleaning mechanism cleans the roller, the reciprocating screw is driven to rotate by the second motor, thereby driving the fixed block and the mounting frame to move; at this time, the second guide shaft slides in the first front groove, so that the first scraper scrapes off the oxide scale attached to the surface of the roller, and the rock wool can wipe the scraping area again, thereby improving the cleaning effect. The second guide shaft moves to the end of the first front groove and pushes away the first guide plate, and then the mounting frame retreats as the reciprocating screw rotates. When the mounting frame retreats, it enters the first retreat groove along the second guide shaft and drives the first scraper to separate from the roller to prevent the rock wool from contacting the roller before the first scraper. The scraped impurities fall into the material receiving box for centralized collection to avoid falling on the stainless steel plate; after the second guide shaft passes over the first guide plate at the end of the first retreat groove, it enters the first front groove under the guidance of the first guide plate. The setting of the first guide plate ensures that the second guide shaft can move smoothly and orderly in the first return groove, and also ensures the smooth progress of the scraping process of the first scraper;

[0025] Furthermore, the second scraper moves forward with the first scraper, and the first guide shaft on the second scraper moves forward and slides in the second forward groove, then passes over the second guide plate and enters the second retracting groove along the second guide plate, so that the bottom of the second scraper is separated from the contact with the material collecting box to avoid scraping back the remaining impurities and oxide scale; the above reciprocating motion can complete and realize the cleaning of the roller surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attached Figure 1 It is a structural schematic diagram of the flushing mechanism;

[0027] Attached Figure 2 It is a schematic diagram of the structure of the pipeline and the rotating shaft;

[0028] Attached Figure 3 It is a schematic diagram of the structure of the pipeline and the electric push rod;

[0029] Attached Figure 4 It is a schematic diagram of the structure of the cleaning mechanism and the roller;

[0030] Attached Figure 5 It is a schematic diagram of the position structure of the rollers, the horizontal plates and the vertical plates;

[0031] Attached Figure 6 It is a schematic diagram of the internal structure of the roller;

[0032] Attached Figure 7 This is a schematic diagram of the structure of the cleaning mechanism. Figure 1 ;

[0033] Attached Figure 8 This is a schematic diagram of the structure of the cleaning mechanism. Figure 2 ;

[0034] Attached Fig. 9 This is a schematic diagram of the structure of the scraping mechanism and the power mechanism. Figure 1 ;

[0035] Attached Fig.10 This is a schematic diagram of the structure of the scraping mechanism and the power mechanism. Figure 2 ;

[0036] Attached Fig.11 It is an application flow chart of a device for eliminating the iron scale indentation defect of hot-rolled stainless steel composite plate;

[0037] In the figure: 1, descaling mechanism; 11, first frame; 111, expansion slot; 12, pipeline; 121, nozzle; 122, fixed column; 13, adjustment plate; 131, adjustment slot; 132, support arm; 133, adjustment arm; 14, mounting seat; 15, first motor; 16, electric push rod; 161, rack; 162, fourth limit plate; 17, rotating shaft; 171, fixed arm; 172, pin shaft;

[0038] 2. Cleaning mechanism; 21. Horizontal plate; 211. First return groove; 2111. First retreat groove; 2112. First forward groove; 2113. First guide plate; 2114. First limit plate; 2115. Tension spring; 2116. First push plate; 2117. First connecting column;

[0039] 22, scraping mechanism; 221, first scraper; 2211, limiting shaft; 2212, supporting shaft; 222, connecting plate; 2221, second limiting plate; 223, second scraper; 2231, first guide shaft;

[0040] 23. Power mechanism; 231. Second motor; 232. Mounting frame; 2321. Second guide shaft; 2322. Through slot; 233. Reciprocating screw; 234. Fixed block;

[0041] 24, vertical plate; 241, slide groove; 242, second return groove; 2421, second guide plate; 2422, second retreat groove; 2423, second forward groove; 24211, second connecting column; 24212, second push plate; 24213, second spring; 24214, third limit plate; 25, material collecting box; 26, rock wool;

[0042] 3. Roller; 31. Spacer; 311. Reinforcement block; 32. Guide pipe; 33. Fixed shaft; 331. Mounting groove; 34. Water collection bin; 35. Bearing; 4. Second frame; 5. Stainless steel plate. DETAILED DESCRIPTION

[0043] To facilitate the understanding of those skilled in the art, Figure 1-11 , the technical solution of the present invention is further specifically described.

[0044] A device for eliminating the iron scale indentation defect of a hot-rolled stainless steel composite plate comprises a descaling mechanism 1 and a cleaning mechanism 2. The descaling mechanism 1 is arranged at the front end of the cleaning mechanism 2. The slab of the stainless steel plate 5 is successively heated, descaled by the descaling mechanism 1, rough rolled and finished rolled to complete the rolling process. The descaling mechanism 1 descales the heated slab with high-temperature and high-pressure steam, and then the surface of the finishing roller 3 is cleaned by the cleaning mechanism 2 in the finishing section.

[0045] The descaling mechanism 1 is provided with two groups of mirror-image settings and fixed on the first frame 11, and the descaling mechanism 1 includes the first frame 11, a pipeline 12, an adjustment plate 13, a mounting seat 14, a first motor 15, an electric push rod 16, and a rotating shaft 17; the pipeline 12 is provided with two groups and is staggered and arranged up and down, one end of the pipeline 12 is connected to an externally arranged high-pressure steam supply device; gears are provided at both ends of the pipeline 12 and mesh with each other; an expansion slot 111 is provided on the first frame 11, and both ends of the pipeline 12 are rotatably connected to the first frame 11, and a nozzle 121 is provided on the pipeline 12, and the nozzle 121 on the upper layer of the pipeline 12 is longer than the nozzle 121 on the lower layer of the pipeline 12, so that the flushing positions of the two are connected front and back without duplication, a ball head is provided at one end of the nozzle 121 and movably connected to the pipeline 12, and a fixing column 122 is provided on the nozzle 121; an adjusting slot 131 is provided on the adjusting plate 13, and the fixing column 122 is provided in the adjusting slot 131 In the embodiment, a fixed support arm 132 and a hinged adjustment arm 133 are provided at both ends of the adjustment plate 13, the support arm 132 is slidably connected to the first frame 11, and the adjustment arm 133 is arranged in the expansion slot 111; the mounting seat 14 is fixed on one side of the first frame 11; the rotating shaft 17 is rotatably connected to the mounting seat 14, a gear is provided on the rotating shaft 17, fixed arms 171 are provided at both ends of the rotating shaft 17, a pin 172 is provided on the fixed arm 171, and the pin 172 is rotatably connected to the adjustment arm 133; the fixed arms 171 at both ends of the rotating shaft 17 are arranged in parallel so that the pins 172 at both ends have the effect of a crankshaft; the first motor 15 is fixed on the mounting seat 14, and a gear is provided at the shaft end of the first motor 15 and meshes with the gear on the rotating shaft 17; the rotating shaft 17 is driven to rotate by the first motor 15, and then the adjustment arm 133 is driven by the pin 172 to pull the adjustment plate 13 so that the upper and lower sets of nozzles 121 swing in the opposite direction to achieve the flushing of the oxide scale.

[0046] The electric push rod 16 is fixed on the first frame 11, and a rack 161 is provided at the top axis of the first electric push rod 16. The rack 161 meshes with the gear at the end of the pipe 12, and the rack 161 is in contact with the fourth limit plate 162 to limit its sliding trajectory. The fourth limit plate 162 is fixedly connected to the first frame 11; the electric push rod 16 pushes the rack 161 to drive the pipe 12 to rotate, thereby controlling the flushing positions of the nozzles 121 of the upper and lower sets of pipes 12 to approach and move away, thereby improving the flushing effect and efficiency.

[0047] The cleaning mechanism 2 includes a horizontal plate 21, a vertical plate 24, a scraping mechanism 22, a power mechanism 23, and a material receiving box 25; the horizontal plate 21 is fixedly connected to the vertical plate 24, the material receiving box 25 is fixed at the bottom of the vertical plate 24, and the scraping mechanism 22 is arranged above the material receiving box 25; a first return groove 211 is provided on the horizontal plate 21, and the first return groove 211 includes a first forward groove 2112 and a first retreat groove 2111 that are interconnected; first guide plates 2113 are provided at both ends of the first return groove 211 and are parallel to each other, and a first connecting plate 2113 is provided on the first guide plate 2113 The column 2117 is rotatably connected to the cross plate 21, and a first push plate 2116 is provided on the first connecting column 2117. A tension spring 2115 and a first limit plate 2114 are provided on one side of the first push plate 2116. Both ends of the tension spring 2115 are fixedly connected to the first limit plate 2114 and the first push plate 2116. The first limit plate 2114 is fixed on the cross plate 21, and the first guide plate 2113 is pulled by the tension spring 2115 to respectively close the first front groove 2112 and one end of the first retracting groove 2111, so that the first guide plate 2113 can play a guiding role.

[0048] A second return groove 242 and a plurality of slide grooves 241 are provided on the vertical plate 24. The second return groove 242 is provided below the slide groove 241. The second return groove 242 includes a second forward groove 2423 and a second retreat groove 2422 which are interconnected. A second guide plate 2421 is provided at the end of the second forward groove 2423. A second connecting column 24211 is provided on the second guide plate 2421. The second connecting column 24211 is rotatably connected to the vertical plate 24. A second push plate 24212 is provided on the second connecting column 24211. A second spring 24213 and a third limit plate 24214 are provided on one side of the second push plate 24212. The third limit plate 24214 is fixed on the vertical plate 24. Both ends of the second spring 24213 are fixedly connected to the second push plate 24212 and the third limit plate 24214. The second guide plate 2421 is pushed by the second spring 24213 to close one end of the second forward groove 2423.

[0049] The scraping mechanism 22 includes a first scraper 221, a connecting plate 222, and a second scraper 223; a limiting shaft 2211 and a supporting shaft 2212 are provided on one side of the first scraper 221 and are arranged in the slide groove 241, the first scraper 221 is in contact with the surface of the roller 3, and the bottom of the first scraper 221 is fixedly connected to the connecting plate 222; the top of the second scraper 223 is rotatably connected to the connecting plate 222; a second limiting plate 2221 is provided on the connecting plate 222 to limit the rotation angle of the second scraper 223, a first guide shaft 2231 is provided on the second scraper 223 and is arranged in the second forward groove 2423 on the second return groove 242; a replaceable rock wool 26 is provided at the first scraper 221 to wipe the area of ​​the roller 3 after scraping for further cleaning.

[0050] The power mechanism 23 includes a second motor 231, a mounting frame 232, a reciprocating screw 233, and a fixed block 234; both ends of the reciprocating screw 233 are fixed to the vertical plate 24 through a fixed seat, the second motor 231 is fixed to the fixed seat and the motor output shaft is connected to one end of the reciprocating screw 233, one side of the mounting frame 232 is fixedly connected to the support shaft 2212, a second guide shaft 2321 is provided on the mounting frame 232 and is arranged in the first forward groove 2112 on the first return groove 211, a through groove 2322 is also provided on the mounting frame 232, the fixed block 234 is arranged in the through groove 2322, and the fixed block 234 is threadedly connected to the reciprocating screw 233; the mounting frame 232 is driven by the second motor 231 to move along the first return groove 211.

[0051] A spacer 31 is provided inside the rolling roller 3 to divide the rolling roller 3 into several cooling chambers; a reinforcement block 311 is provided on the spacer 31 to make it more firmly fixed to the outer cylindrical wall of the rolling roller 3; fixed shafts 33 are provided at both ends of the rolling roller 3, and a mounting groove 331 is provided on the fixed shaft 33, and a water collection chamber 34 is provided at one end of the fixed shaft 33, and a guide pipe 32 is provided in the mounting groove 331 and connected to the cooling chamber inside the rolling roller 3 for separate water circulation, one end of the guide pipe 32 is connected to the water collection chamber 34, and a bearing 35 is provided on the fixed shaft 33 and rotatably connected to the second frame 4; a gear is provided on the fixed shaft 33 at one end of the rolling roller 3 and is connected to an external power device to provide power for it to rotate, and the means by which the external power device provides power to the rolling roller is the existing technology, including using a motor as a power output part, which will not be described in detail here; a rotary joint and a water pipe are provided on the water collection chamber 34 and are connected to an external water supply device to form a water circulation to cool the rolling roller 3 and reduce the probability of the formation of an oxide film on the surface of the rolling roller 3 itself.

[0052] A method for using a device for eliminating scale indentation defects of a hot-rolled stainless steel composite plate, the specific steps are as follows:

[0053] S1: Descaling mechanism 1 high-pressure dephosphorization: After the slab is heated, oxide scale will appear, and the descaling mechanism 1 sprays high-pressure steam to flush and remove the oxide scale;

[0054] 1) During the flushing process, the flushing areas formed by the upper and lower sets of pipes 12 and the arrangement of the nozzle 121 are connected in sequence, and the first motor 15 drives the rotating shaft 17 to pull the adjustment plate 13 to move in the opposite direction, and pulls the nozzle 121 to move in the opposite direction so that the flushing directions are crossed and repeatedly swung to help flush away the oxide scale;

[0055] 2) Furthermore, the electric push rod 16 can push the rack 161 to drive the upper and lower sets of pipes 12 to rotate, and adjust the position of the flushing area of ​​the nozzle 121 so that the flushing areas are connected and disconnected with each other;

[0056] S2: Stainless steel plate rolling: The stainless steel plate 5 is rolled successively through the rough rolling and finishing rolling set by the conventional process; the oxide scale generated by the roller 3 itself is eliminated: During the finishing rolling process, a cooling circulation system is provided inside the roller 3 to cool the finishing roller. The roller 3 is cooled by the cooling water circulation inside, thereby reducing the probability of the roller generating an oxide film on the surface due to overheating. The cooling water enters the cooling chamber inside the roller 3 through the guide pipe 32 at one end of the roller 3 and then flows out from the guide pipe 32 at the other end to form a stable circulation system, which can effectively prevent the roller 3 from overheating and causing an oxide film to appear on its surface and press into the stainless steel plate 5;

[0057] S3: Cleaning of the surface of the stainless steel plate finishing roller: Elimination of the oxide scale adhered to the outside of the roller 3; Cleaning the impurities, including oxide scale, attached to the surface of the roller 3 during rolling by the cleaning mechanism 2; The reciprocating screw 233 is driven to rotate by the second motor 231, thereby driving the fixed block 234 and the mounting frame 232 to move; at this time, the second guide shaft 2321 slides in the first front groove 2112, so that the first scraper 221 scrapes off the oxide scale attached to the roller 3, moves to the end of the first front groove 2112 and pushes away the first guide plate 2113, and then retreats with the rotation of the reciprocating screw 233. When retreating, the mounting frame 232 enters the first retreat groove 2111 along the second guide shaft 2321 and drives the first scraper 221 to separate from the roller 3 to prevent the rock wool 26 from contacting the roller 3 before the first scraper 221, and the scraped impurities fall into the material receiving box 25; the second guide shaft 2321 passes over the first guide plate 2113 at the end of the first retreat groove 2111 and enters the first front groove 2112 under the guidance of the first guide plate 2113;

[0058] Furthermore, the second scraper 223 moves forward with the first scraper 221, and the first guide shaft 2231 on the second scraper 223 moves forward and slides in the second forward groove 2423, then passes over the second guide plate 2421 and enters the second retracting groove 2422 along the second guide plate 2421, so that the bottom of the second scraper 223 is separated from the contact with the material receiving box 25 to avoid scraping back the remaining impurities and oxide scale; the above reciprocating motion can complete and realize the cleaning of the surface of the roller 3.

[0059] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0060] In summary, electronic or electrical components including but not limited to electric push rods, motors, etc. are components in the prior art, obtained through private customization or purchase, and the electrical connections between the components are conventional circuit connections or electrical connections in the prior art, which are not within the scope of protection of the present invention;

[0061] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A device for eliminating the iron scale indentation defect of hot-rolled stainless steel composite plate, comprising a descaling mechanism and a cleaning mechanism, characterized in that The descaling mechanism is arranged at the front end of the cleaning mechanism. The stainless steel plate slab is successively heated, descaled, rough rolled and finished rolled to complete the rolling process. The descaling mechanism descales the heated slab with high-temperature and high-pressure steam, and then the cleaning mechanism cleans the roller surface in the finishing section. The cleaning mechanism includes a horizontal plate, a vertical plate, a scraping mechanism, a power mechanism, and a material receiving magazine; the horizontal plate is fixedly connected to the vertical plate, the material receiving magazine is fixed at the bottom of the vertical plate, and the scraping mechanism is arranged above the material receiving magazine; a first return groove is arranged on the horizontal plate, and the first return groove includes a first forward groove and a first return groove that are interconnected; first guide plates are arranged at both ends of the first return groove and are parallel to each other, a first connecting column is arranged on the first guide plate and is rotatably connected to the horizontal plate, a first push plate is arranged on the first connecting column, a tension spring and a first limit plate are arranged on one side of the first push plate, the first limit plate and the first push plate are fixedly connected at both ends of the tension spring, and the first limit plate is fixed on the horizontal plate, and the first guide plate is pulled by the tension spring to close the ports at one end of the first forward groove and the first return groove respectively, so that the first guide plate can play a guiding role; the scraping mechanism is driven by the power mechanism to move and scrape the oxide scale into the material receiving magazine for collection.

2. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that The vertical plate is provided with a second return groove and a plurality of sliding grooves, the second return groove is arranged below the sliding groove, the second return groove includes a second front groove and a second retracting groove which are interconnected, a second guide plate is provided at the end of the second front groove, a second connecting column is provided on the second guide plate, the second connecting column is rotatably connected to the vertical plate, a second push plate is provided on the second connecting column, a second spring and a third limit plate are provided on one side of the second push plate, the third limit plate is fixed on the vertical plate, and both ends of the second spring are fixedly connected to the second push plate and the third limit plate; the second guide plate is pushed by the second spring to close a port at one end of the second front groove.

3. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that The scraping mechanism includes a first scraper, a connecting plate, and a second scraper; a limiting shaft and a supporting shaft are provided on one side of the first scraper and are arranged in a slide groove, the first scraper is in contact with the surface of the roller, and the bottom of the first scraper is fixedly connected to the connecting plate; the top of the second scraper is rotatably connected to the connecting plate; a second limiting plate is provided on the connecting plate to limit the rotation angle of the second scraper, a first guide shaft is provided on the second scraper and is arranged in a second forward groove on the second return groove; the first scraper is provided with replaceable rock wool to wipe the roller area after scraping for further cleaning.

4. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that The power mechanism includes a second motor, a mounting frame, a reciprocating screw, and a fixed block; both ends of the reciprocating screw are fixed to the vertical plate through a fixed seat, the second motor is fixed on the fixed seat and the motor output shaft is connected to one end of the reciprocating screw, one side of the mounting frame is fixedly connected to the support shaft, a second guide shaft is provided on the mounting frame and is arranged in the first forward groove on the first return groove, a through groove is also provided on the mounting frame, the fixed block is arranged in the through groove, and the fixed block is threadedly connected to the reciprocating screw; the mounting frame is driven by the second motor to move along the first return groove.

5. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that The descaling mechanism is provided with two groups of mirror-image settings and fixed on the first frame, and the descaling mechanism includes a first frame, a pipeline, an adjustment plate, a mounting seat, a first motor, an electric push rod, and a rotating shaft; the pipeline is provided with two groups and is staggered and arranged up and down, and one end of the pipeline is connected to an externally arranged high-pressure steam supply device; gears are provided at both ends of the pipeline and mesh with each other; an expansion slot is provided on the first frame, and both ends of the pipeline are rotatably connected to the first frame, and a nozzle is provided on the pipeline, and the nozzle on the upper pipeline is longer than the nozzle on the lower pipeline, so that the flushing positions of the two are connected front and back without duplication, a ball head is provided at one end of the nozzle and movably connected to the pipeline, and a fixed column is provided on the nozzle; an adjustment slot is provided on the adjustment plate, and the fixed column is provided with a In the adjustment slot, a fixedly connected support arm and a hingedly connected adjustment arm are provided at both ends of the adjustment plate, the support arm is slidably connected to the first frame, and the adjustment arm is arranged in the expansion slot; the mounting seat is fixed on one side of the first frame; the rotating shaft is rotatably connected to the mounting seat, a gear is provided on the rotating shaft, fixed arms are provided at both ends of the rotating shaft, a pin is provided on the fixed arm, and the pin is rotatably connected to the adjustment arm; the fixed arms at both ends of the rotating shaft are arranged in parallel so that the pins at both ends have the use effect of a crankshaft; the first motor is fixed on the mounting seat, and a gear is provided at the shaft end of the first motor and meshes with the gear on the rotating shaft; the rotating shaft is driven to rotate by the first motor, and then the adjustment arm is driven by the pin to pull the adjustment plate to make the upper and lower sets of nozzles swing in the opposite direction to achieve the flushing of the oxide scale.

6. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 5, characterized in that The electric push rod is fixed on the first frame, and a rack is provided at the top shaft of the first electric push rod. The rack meshes with the gear at the end of the pipeline, and the rack fits the fourth limit plate to limit its sliding trajectory. The fourth limit plate is fixedly connected to the first frame; the electric push rod pushes the rack to drive the pipeline to rotate, thereby controlling the nozzle flushing positions of the upper and lower sets of pipelines to approach and move away, thereby improving the flushing effect and flushing efficiency.

7. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that The roller is provided with partitions inside to divide the roller into several cooling chambers; the partitions are provided with reinforcement blocks to make them more firmly fixed to the outer cylindrical wall of the roller; fixed shafts are provided at both ends of the roller, and mounting grooves are provided on the fixed shafts, and a water collection chamber is provided at one end of the fixed shaft, a guide pipe is provided in the mounting groove and connected to the cooling chamber inside the roller for separate water circulation, one end of the guide pipe is connected to the water collection chamber, and a bearing is provided on the fixed shaft and is rotatably connected to the second frame; a gear is provided on the fixed shaft at one end of the roller and is connected to an external power device to provide power for it to rotate, and the means by which the external power device provides power to the roller is existing technology, including using a motor as a power output part, which will not be elaborated here; a rotating joint and a water pipe are provided on the water collection chamber and are connected to an external water supply device to form a water circulation to cool the roller and reduce the probability of the formation of an oxide film on the surface of the roller itself.

8. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 1, characterized in that: The specific steps are as follows: S1: Descaling mechanism high-pressure dephosphorization: After the slab is heated, oxide scale will appear, and the descaling mechanism will spray high-pressure steam to flush and remove the oxide scale; S2: Stainless steel plate rolling: The stainless steel plate is rolled successively through the rough rolling and finishing rolling set by the conventional process; Elimination of the oxide scale generated by the roller itself: During the finishing rolling process, a cooling circulation system is provided inside the roller to cool the finishing roller. The roller is cooled by the cooling water circulation inside, thereby reducing the probability of the roller generating an oxide film on the surface due to overheating. The cooling water enters the cooling chamber inside the roller through the guide pipe at one end of the roller and then flows out from the guide pipe at the other end to form a stable circulation system, which can effectively prevent the roller from overheating and causing an oxide film to appear on its surface and press into the stainless steel plate; S3: Cleaning the surface of the stainless steel plate finishing roller: eliminating the oxide scale adhered to the outside of the roller; using a cleaning mechanism to clean impurities attached to the surface of the roller during rolling, including oxide scale; using a second motor to drive the reciprocating screw to rotate, thereby driving the fixed block and the mounting frame to move; at this time, the second guide shaft slides in the first front groove, so that the first scraper scrapes off the oxide scale attached to the roller, moves to the end of the first front groove and pushes away the first guide plate, and then retreats with the rotation of the reciprocating screw. When retreating, the mounting frame enters the first retreat groove along the second guide shaft and drives the first scraper to detach from the roller to prevent the rock wool from contacting the roller before the first scraper, and the scraped impurities fall into the material receiving box; after the second guide shaft passes over the first guide plate at the end of the first retreat groove, it enters the first front groove under the guidance of the first guide plate; Furthermore, the second scraper moves forward with the first scraper, and the first guide shaft on the second scraper moves forward and slides in the second forward groove, then passes over the second guide plate and enters the second retracting groove along the second guide plate, so that the bottom of the second scraper is separated from the contact with the material collecting box to avoid scraping back the remaining impurities and oxide scale; the above reciprocating motion can complete and realize the cleaning of the roller surface.

9. The device for eliminating scale indentation defects of hot-rolled stainless steel composite plates according to claim 8, characterized in that Step S1 is specifically divided into two steps: 1) During the flushing process, the flushing areas formed by the upper and lower sets of pipes and the arrangement of the nozzles are connected successively, and the first motor drives the rotating shaft to pull the adjustment plate to move in the opposite direction, and pulls the nozzle to move in the opposite direction so that the flushing directions are crossed and repeatedly swung to help flush away the oxide scale; 2) Furthermore, the electric push rod can be used to push the rack to drive the upper and lower sets of pipes to rotate, and the position of the nozzle flushing area can be adjusted to make the flushing areas connect and disconnect with each other.

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