Hot continuous rolling device for improving surface wrinkling of phase-change ferritic stainless steel

Abstract

The utility model discloses a hot continuous rolling device for improving surface wrinkling of phase-change ferritic stainless steel. The hot continuous rolling device comprises a rack, a supporting frame, a guiding mechanism, a lubricating mechanism, a finishing roller and a conveying roller. The supporting frame is fixed to the top of the rack. The multiple conveying rollers are evenly connected to the rack. The guide mechanism is mounted on the rack on one side of the support frame; the finishing roller is mounted on the support frame; a motor III is arranged at one end of the finishing roller; the lubricating mechanism is fixed on the support frame above the finishing roller; the guide mechanism comprises a guide plate, a bidirectional threaded rod and a motor I; the two-way threaded rod is rotationally connected to the rack through a bearing, and the motor I is fixed to the side wall of the rack and connected with the two-way threaded rod; a pair of guide plates are symmetrically installed at the two ends of the stainless steel, movably connected to the surfaces of the conveying rollers and connected with the two-way threaded rod through threads. According to the utility model, not only can the stainless steel be prevented from shifting, but also the defect of wrinkling on the surface of the phase-change ferritic stainless steel can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot continuous rolling of phase-transformation ferrite stainless steel, in particular to a hot continuous rolling device for improving surface wrinkling of phase-transformation ferrite stainless steel. Background Art

[0002] The production process of phase-change ferritic stainless steel is as follows: the ingot is heated, dephosphorized, rough rolled, dephosphorized, finished rolled, laminar cooled, coiled, annealed, pickled and cold rolled to produce phase-change ferritic stainless steel; during deep drawing or deep drawing, the surface of phase-change ferritic stainless steel is prone to wrinkle stripe defects parallel to the rolling direction, which is one of the most serious problems in deep drawing or deep drawing of phase-change ferritic stainless steel.

[0003] After searching, the announcement number is CN217726643U, a finishing mill for stainless steel pipe processing, comprising: a finishing mill body, a processing workpiece is arranged on the finishing mill body, and a dust collecting device and a dust removing device are installed in sequence at the position of the processing workpiece, and the dust collecting device is fixedly installed on the finishing mill body through two groups of fixed plates, a dust collecting channel is installed on the top of the dust collecting frame on the dust collecting device, and an air pump is installed on the dust collecting channel; its processing process has the following disadvantages: the finishing mill body lacks a lubrication mechanism and cannot lubricate the rolling rollers, friction will be generated between the rolling rollers and the stainless steel, which will further cause wrinkling defects on the surface of the phase change stainless steel.

[0004] A low-hardness ferritic stainless steel hot rolling production process with announcement number CN112845594A comprises the following steps: casting a slab through a heating furnace, rough rolling, and finish rolling to obtain low-hardness ferritic stainless steel; the heating temperature of the heating furnace is 1240°C, the slab extraction temperature is 1190°C, the furnace time is greater than 200 minutes, the dephosphorization mode is mainly dephosphorization, the pressure is 25Mpa, and the full length is used; in the rough rolling step, the roller diameter of the rough rolling mill working roll is ≤1050mm, the rolling amount of the rough rolling mill working roll is ≤5000 tons, the rolling force of the rough rolling mill is less than 1200 tons / pass, and a total of 7 passes are rolled. The intermediate billet thickness is 26 mm; in the finishing rolling step, the finishing rolling working roll is ≤680 mm, the rolling force of the finishing rolling mill is <1200 tons / pass, a total of 5 passes are rolled, and the target thickness is 3.5-5.0 mm; the processing process has the following disadvantages: the above-mentioned ferritic stainless steel hot rolling production process can prevent the occurrence of steel sticking defects and improve the surface quality of the product; however, due to the friction generated between the roller and the stainless steel during the finishing rolling process; and the finishing rolling temperature cannot be controlled, resulting in the stainless steel being unable to have a good recrystallization temperature condition; further resulting in wrinkling defects on the surface of the phase change stainless steel. Summary of the invention

[0005] The utility model aims to overcome the deficiencies in the prior art and to provide a hot rolling device for improving the surface wrinkling of phase-transformation ferritic stainless steel. Through the cooperation of a guiding mechanism, a lubricating mechanism and a flattening mechanism, the device can prevent the stainless steel from deviating and effectively improve the defect of the surface wrinkling of the phase-transformation ferritic stainless steel.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A hot rolling device for improving the surface wrinkling of phase-change ferritic stainless steel comprises a frame, a support frame, a guide mechanism, a lubricating mechanism, a finishing roller and a transport roller; the support frame is fixed on the top of the frame; a plurality of transport rollers are provided and are evenly connected to the frame; the guide mechanism is installed on the frame on one side of the support frame; the finishing roller is installed on the support frame, and a motor III is provided at one end of the finishing roller; the lubricating mechanism is fixed on the support frame above the finishing roller; the stainless steel is transported by the transport roller, and when the stainless steel passes through the guide mechanism, the guide mechanism moves the stainless steel to the middle position to prevent the stainless steel from shifting; then the stainless steel enters the finishing roller for finishing rolling, and the lubricating mechanism lubricates the finishing roller, thereby reducing the friction between the finishing roller and the stainless steel, and further improving the wrinkling defect on the stainless steel surface; then the stainless steel after finishing rolling is leveled by the leveling mechanism; finally, the stainless steel is transported away by the transport roller.

[0008] The guide mechanism includes a guide plate, a bidirectional threaded rod, and a motor I; the bidirectional threaded rod is rotatably connected to the frame through a bearing, the motor I is fixed on the side wall of the frame, and the output shaft is connected to the bidirectional threaded rod; a pair of guide plates are provided, which are symmetrically installed at both ends of the stainless steel, and the guide plates are movably connected to the surface of the transport roller and are connected to the bidirectional threaded rod through threads; a mounting groove is provided at the end of the guide plate away from the frame, and a guide roller is rotatably connected inside the mounting groove, and the guide roller contacts the side wall of the stainless steel, which can prevent the guide plate from scratching the stainless steel; the motor I provides power to drive the bidirectional threaded rod to rotate, and the bidirectional threaded rod drives the guide plate to move along the transport roller through the threads, so that the guide roller contacts the side wall of the stainless steel and drives the stainless steel to move, thereby centering the offset stainless steel.

[0009] The top of the guide plate is provided with a moving groove, and a clamping mechanism is installed on the top of the guide plate; the clamping mechanism includes a mounting frame, a clamping roller, a lead screw, a gear, a rack, a fixed plate, an electric push rod, and a guide rod; the gear is rotatably connected to the guide plate through a rotating shaft, the lead screw is connected to the gear through a thread, the mounting frame is fixed to the bottom end of the lead screw, the clamping roller is rotatably connected to the mounting frame through a bearing, one end of the guide rod is fixed to the top of the mounting frame, and the other end passes through the guide plate; the bottom of the rack is "T"-shaped and is installed in the moving groove, and the rack is meshed with the gear; the fixed plate is fixed to the top of the guide plate, the electric push rod is fixed to the fixed plate, and the output end is connected to the rack; the electric push rod provides power to drive the rack to move along the moving groove, the rack drives the gear to rotate, the gear drives the lead screw to move along the guide rod through a thread, and then drives the mounting frame and the clamping roller to move up and down through the lead screw; so that the clamping roller contacts the upper surface of the stainless steel, and the edge of the stainless steel is further clamped by the clamping roller, so as to ensure that the stainless steel enters the finishing roller for finishing rolling smoothly, which can effectively improve the wrinkling defects on the surface of the stainless steel.

[0010] A leveling mechanism is provided at one end of the support frame away from the guide mechanism, and the leveling mechanism includes a support plate, a leveling roller, a connecting plate, a spring, and a spring guide shaft; a pair of support plates are provided, which are symmetrically fixed on the side walls of the support frame; the connecting plate is movably connected to the support plate, and the leveling roller is rotatably connected to the connecting plate through a bearing; the spring is fixed between the support plate and the connecting plate, one end of the spring guide shaft is fixed to the support plate, and the other end passes through the spring and the connecting plate; when the stainless steel passes through the leveling mechanism, the stainless steel contacts the leveling roller, and the leveling roller levels the stainless steel after fine rolling; thereby, the wrinkling defects on the surface of the stainless steel can be improved; the spring can make the leveling roller elastically contact with the stainless steel, and can prevent indentations on the surface of the stainless steel.

[0011] The lubrication mechanism includes a conduit, a liquid outlet pipe, a movable plate, a guide shaft, a lead screw, and a motor II; the conduit is fixed on the support frame, and the liquid outlet pipe is provided with a number of evenly distributed on the conduit; the movable plate is located on both sides of the liquid outlet pipe, and is provided on the movable plate; the guide shaft is fixed on the side wall of the support frame; both ends of the lead screw are rotatably connected to the support frame through bearings, the movable plate is connected to the lead screw through threads, and the movable plate passes through the guide shaft; the movable plate is provided with oil-absorbing cotton, and the oil-absorbing cotton is in contact with the outer surface of the finishing roller; the motor II is fixed on the side wall of the support frame, and the output shaft is connected to the lead screw; the motor II provides power to drive the lead screw to rotate, and the lead screw drives the movable plate to reciprocate along the finishing roller, thereby pushing away the lubricating liquid sprayed on the surface of the finishing roller, which can reduce the friction between the finishing roller and the stainless steel surface, and further improve the surface wrinkling defects of phase-change ferritic stainless steel.

[0012] Infrared temperature sensors and cooling pipes are provided on the support frames on both sides of the finishing rollers, and a number of evenly distributed nozzles are provided on the cooling pipes; the coolant is sprayed onto the surface of the stainless steel through the nozzles, thereby controlling the initial and final temperatures of the stainless steel finishing rolling, and further improving the wrinkling defects on the stainless steel surface.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1) Motor I in the guide mechanism provides power to drive the bidirectional threaded rod to rotate, and the bidirectional threaded rod drives the guide plate to move along the transport roller through the thread, so that the guide roller contacts the side wall of the stainless steel and drives the stainless steel to move, so as to center the offset stainless steel; the electric push rod provides power to drive the rack to move along the moving groove, the rack drives the gear to rotate, the gear drives the lead screw to move along the guide rod through the thread, and then drives the mounting frame and the clamping roller to move up and down through the lead screw; so that the clamping roller contacts the upper surface of the stainless steel, and further presses the edge of the stainless steel through the clamping roller, so as to ensure that the stainless steel enters the finishing roller smoothly for finishing rolling, which can effectively improve the wrinkling defects on the stainless steel surface.

[0015] 2) Motor II in the lubrication mechanism provides power to drive the screw to rotate, and the screw drives the moving plate to move back and forth along the finishing roller, thereby pushing away the lubricating liquid sprayed on the surface of the finishing roller, which can reduce the friction between the finishing roller and the stainless steel surface and further improve the surface wrinkling defect of phase transformation ferritic stainless steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 This is a schematic diagram of the structure of a hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel according to the utility model;

[0017] Attached Figure 2 This is a schematic diagram of the structure of the guide mechanism in the hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel. Figure 1 ;

[0018] Attached Figure 3 This is a schematic diagram of the structure of the guide mechanism in the hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel. Figure 2 ;

[0019] Attached Figure 4 This is a schematic diagram of the structure of a flattening mechanism in a hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel according to the utility model;

[0020] Attached Figure 5 This is a schematic diagram of the lubrication mechanism structure in a hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel according to the utility model;

[0021] In the figure: 1, frame; 2, support frame; 201, infrared temperature sensor; 202, cooling pipe; 2021, nozzle; 3, guide mechanism; 301, guide plate; 3011, mounting groove; 3012, guide roller; 3013, moving groove; 302, two-way threaded rod; 303, motor I; 304, clamping mechanism; 3041, mounting frame; 3042, clamping roller; 3043, lead screw; 3044, gear; 3045, rack; 3046, fixed plate; 3047, electric push rod; 3048, guide rod; 4, lubrication mechanism; 401, guide tube; 402, liquid outlet pipe; 403, movable plate; 404, guide shaft; 405, lead screw; 406, motor II; 5, leveling mechanism; 501, support plate; 502, leveling roller; 503, connecting plate; 504, spring; 505, spring guide shaft; 6, finishing roller; 601, motor III; 7, transport roller; 8, stainless steel. DETAILED DESCRIPTION

[0022] To facilitate the understanding of those skilled in the art, Figure 1-5 , the technical solution of the utility model is further specifically described.

[0023] A hot rolling device for improving the surface wrinkling of phase-change ferritic stainless steel comprises a frame 1, a support frame 2, a guide mechanism 3, a lubricating mechanism 4, a finishing roller 6 and a transport roller 7; the support frame 2 is fixed on the top of the frame 1; a plurality of transport rollers 7 are provided and are evenly connected to the frame 1; the guide mechanism 3 is installed on the frame 1 on one side of the support frame 2; the finishing roller 6 is installed on the support frame 2, and a motor III 601 is provided at one end of the finishing roller 6; the lubricating mechanism 4 is fixed on the support frame 2 above the finishing roller; the stainless steel 8 is transported by the transport roller 7, and when the stainless steel passes through the guide mechanism 3, the guide mechanism 3 moves the stainless steel 8 to the middle position to prevent the stainless steel 8 from deflecting; then the stainless steel 8 enters the finishing roller for finishing rolling, and the lubricating mechanism 4 lubricates the finishing roller, thereby reducing the friction between the finishing roller 6 and the stainless steel 8, and further improving the surface wrinkling defects of the stainless steel 8; then the stainless steel 8 after finishing rolling is leveled by the leveling mechanism 5; finally, the stainless steel 8 is transported away by the transport roller.

[0024] The guide mechanism 3 includes a guide plate 301, a bidirectional threaded rod 302, and a motor I 303; the bidirectional threaded rod 302 is rotatably connected to the frame 1 through a bearing, the motor I 303 is fixed on the side wall of the frame 1, and the output shaft is connected to the bidirectional threaded rod 302; a pair of guide plates 301 are provided, symmetrically installed at both ends of the stainless steel 8, the guide plates 301 are movably connected to the surface of the transport roller 7, and are connected to the bidirectional threaded rod 302 through threads; a mounting groove 301 is provided at one end of the guide plate 301 away from the frame 1, and a guide roller 3012 is rotatably connected inside the mounting groove 3011; the motor I 303 provides power to drive the bidirectional threaded rod 302 to rotate, and the bidirectional threaded rod 302 drives the guide plate 301 to move along the transport roller 7 through threads, so that the guide roller 3012 contacts the side wall of the stainless steel 8 and drives the stainless steel 8 to move, thereby centering the offset stainless steel 8.

[0025] The guide plate 301 is provided with a movable groove 3013 at the top, and a clamping mechanism 304 is installed at the top of the guide plate 301; the clamping mechanism 304 includes a mounting frame 3041, a clamping roller 3042, a lead screw 3043, a gear 3044, a rack 3045, a fixed plate 3046, an electric push rod 3047, and a guide rod 3048; the gear 3044 is rotatably connected to the guide plate 301 through a rotating shaft, the lead screw 3043 is connected to the gear 3044 through a thread, the mounting frame 3041 is fixed to the bottom end of the lead screw 3043, the clamping roller 3042 is rotatably connected to the mounting frame 3041 through a bearing, one end of the guide rod 3048 is fixed to the top of the mounting frame 3041, and the other end passes through the guide plate 301; the bottom of the rack 3045 is "T" shaped and is installed in the movable groove 3013, the gear 3045 is "T" shaped, and the gear 3045 is installed in the movable groove 3013. The rack 3045 is meshed and connected with the gear 3044; the fixed plate 3046 is fixed on the top of the guide plate 301, the electric push rod 3047 is fixed on the fixed plate 3046, and the output end is connected with the rack 3045; the electric push rod 3047 provides power to drive the rack 3045 to move along the movable groove 3013, the rack 3045 drives the gear 3044 to rotate, and the gear 3044 drives the lead screw 3043 to move along the guide rod 3048 through the thread, and then drives the mounting frame 3041 and the clamping roller 3042 to move up and down through the lead screw 3043; so that the clamping roller 3042 contacts the upper surface of the stainless steel 8, and further the edge of the stainless steel 8 is clamped by the clamping roller 3042, so as to ensure that the stainless steel enters the finishing roller smoothly for finishing rolling, which can effectively improve the wrinkling defects on the surface of the stainless steel.

[0026] A leveling mechanism 5 is provided at one end of the support frame 2 away from the guide mechanism 3, and the leveling mechanism 5 includes a support plate 501, a leveling roller 502, a connecting plate 503, a spring 504, and a spring guide shaft 505; a pair of support plates 501 are provided, which are symmetrically fixed on the side walls of the support frame 2; the connecting plate 503 is movably connected to the support plate 501, and the leveling roller 502 is rotatably connected to the connecting plate 503 through a bearing; the spring 504 is fixed between the support plate 501 and the connecting plate 503, one end of the spring guide shaft 505 is fixed on the support plate 501, and the other end passes through the spring 504 and the connecting plate 503; when the stainless steel 8 passes through the leveling mechanism 5, the stainless steel 8 contacts the leveling roller 502, and the leveling roller 502 levels the stainless steel 8 after fine rolling; thereby, the wrinkling phenomenon on the surface of the stainless steel can be improved; the spring can make the leveling roller elastically contact with the stainless steel, which can prevent indentations on the surface of the stainless steel.

[0027] The lubricating mechanism 4 includes a conduit 401, a liquid outlet pipe 402, a movable plate 403, a guide shaft 404, a lead screw 405, and a motor II 406; the conduit 401 is fixed on the support frame 2, and the liquid outlet pipe 402 is provided with a plurality of evenly distributed conduits 401; the movable plate 403 is located on both sides of the liquid outlet pipe 402, and the movable plate 403 is provided with; the guide shaft 404 is fixed on the side wall of the support frame 2; both ends of the lead screw 405 are rotatably connected to the support frame 2 through bearings, and the movable plate 403 is connected to the lead screw 405 through threads On the upper surface, the movable plate 403 passes through the guide shaft 404; the movable plate 403 is provided with oil-absorbing cotton, which contacts the outer surface of the finishing roller 6; the motor II 406 is fixed on the side wall of the support frame 2, and the output shaft is connected to the screw 405; the motor II 406 provides power to drive the screw 405 to rotate, and the screw 405 drives the movable plate 403 to move back and forth along the finishing roller, thereby pushing away the lubricating liquid sprayed on the surface of the finishing roller, which can reduce the friction between the finishing roller and the stainless steel surface, and further improve the surface wrinkling defects of the phase transformation ferritic stainless steel.

[0028] The support frames 2 on both sides of the finishing roller 6 are provided with infrared temperature sensors 201 and cooling pipes 202. The model of the infrared temperature sensor 201 is BRW600-400A, which is purchased from the market or customized. The cooling pipe 202 is provided with a number of evenly distributed nozzles 2021. The coolant passes through the nozzles 2021 to the surface of the stainless steel 8, thereby controlling the initial and final temperatures of the stainless steel 8 during finishing rolling, and further improving the wrinkling defects on the stainless steel surface.

[0029] A hot rolling device for improving the surface wrinkling of phase-change ferritic stainless steel has the following working process: stainless steel 8 is transported by a transport roller 7, and when the stainless steel passes through a guide mechanism 3, the guide mechanism 3 moves the stainless steel 8 to a middle position to prevent the stainless steel 8 from deflecting; then the stainless steel 8 enters the finishing roller for finishing rolling, and at the same time the lubricating mechanism 4 lubricates the finishing roller 6, thereby reducing the friction between the finishing roller 6 and the stainless steel 8, and further improving the surface wrinkling defects of the stainless steel 8; then the stainless steel 8 after finishing rolling is flattened by a flattening mechanism 5, and the surface wrinkling defects of the stainless steel 8 can be effectively improved; finally, the stainless steel 8 is transported away by the transport roller.

[0030] The above contents are merely examples and explanations of the structure of the present invention. The infrared temperature sensor, motor I, motor II, motor III, electric push rod and other electrical components involved in the present invention are components in the prior art. The electrical connections between the circuit components are all conventional circuit connections in the prior art and are not within the scope of protection of the present invention.

[0031] The above contents are merely examples and explanations of the structure of the utility model. 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 utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A hot rolling device for improving the surface wrinkling of phase-transformed ferritic stainless steel, comprising a frame, a support frame, a guide mechanism, a lubrication mechanism, a finishing roller, and a transport roller; characterized in that The support frame is fixed on the top of the frame; a plurality of transport rollers are provided and evenly connected to the frame; the guide mechanism is installed on the frame on one side of the support frame; the finishing roller is installed on the support frame, and a motor III is provided at one end of the finishing roller; the lubrication mechanism is fixed on the support frame above the finishing roller; The guide mechanism includes a guide plate, a bidirectional threaded rod, and a motor I; the bidirectional threaded rod is rotatably connected to the frame through a bearing, the motor I is fixed to the side wall of the frame, and the output shaft is connected to the bidirectional threaded rod; a pair of guide plates are provided, symmetrically installed at both ends of the stainless steel, the guide plates are movably connected to the surface of the transport roller, and are connected to the bidirectional threaded rod through threads; a mounting groove is provided at one end of the guide plate away from the frame, a guide roller is rotatably connected inside the mounting groove, and the guide roller contacts the side wall of the stainless steel; A moving groove is provided on the top of the guide plate, and a clamping mechanism is installed on the top of the guide plate; the clamping mechanism includes a mounting frame, a clamping roller, a lead screw, a gear, a rack, a fixing plate, an electric push rod, and a guide rod; the gear is rotatably connected to the guide plate through a rotating shaft, the lead screw is connected to the gear through a thread, the mounting frame is fixed to the bottom end of the lead screw, the clamping roller is rotatably connected to the mounting frame through a bearing, one end of the guide rod is fixed to the top of the mounting frame, and the other end passes through the guide plate; the bottom of the rack is "T" shaped and is installed in the moving groove, and the rack is meshed with the gear; The fixed plate is fixed on the top of the guide plate, the electric push rod is fixed on the fixed plate, and the output end is connected with the rack.

2. The hot rolling device for improving the surface wrinkling of phase-transformed ferritic stainless steel according to claim 1, characterized in that A leveling mechanism is provided at one end of the support frame away from the guide mechanism, and the leveling mechanism includes a support plate, a leveling roller, a connecting plate, a spring, and a spring guide shaft; a pair of support plates are provided, which are symmetrically fixed on the side walls of the support frame; the connecting plate is movably connected to the support plate, and the leveling roller is rotatably connected to the connecting plate through a bearing; the spring is fixed between the support plate and the connecting plate, one end of the spring guide shaft is fixed on the support plate, and the other end passes through the spring and the connecting plate.

3. The hot rolling device for improving the surface wrinkling of phase-transformed ferrite stainless steel according to claim 1, characterized in that The lubrication mechanism includes a conduit, a liquid outlet pipe, a movable plate, a guide shaft, a lead screw, and a motor II; the conduit is fixed on the support frame, and the liquid outlet pipe is provided with a number of evenly distributed on the conduit; the movable plate is located on both sides of the liquid outlet pipe, and is provided on the movable plate; the guide shaft is fixed on the side wall of the support frame; both ends of the lead screw are rotatably connected to the support frame through bearings, the movable plate is connected to the lead screw through threads, and the movable plate passes through the guide shaft; the movable plate is provided with oil-absorbing cotton, and the oil-absorbing cotton is in contact with the outer surface of the finishing roller; the motor II is fixed on the side wall of the support frame, and the output shaft is connected to the lead screw.

4. The hot rolling device for improving the surface wrinkling of phase-transformed ferritic stainless steel according to claim 1, characterized in that Infrared temperature sensors and cooling pipes are arranged on the support frames on both sides of the finishing roller, and a number of evenly distributed nozzles are arranged on the cooling pipes.

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