A heavy nickel-based alloy N08825 strip steel annealing and pickling process

Abstract

The invention discloses a heavy nickel-based alloy N08825 strip annealing and pickling process, and the process steps are as follows: step 1): uncoiling and welding; step 2): annealing: annealing the iron-nickel-based alloy strip through an annealing device, and then cooling; step 3): phosphorus breaking shot blasting: annealing the iron-nickel-based alloy strip through a shot blasting machine; step 4: pickling: pickling the iron-nickel-based alloy strip to remove oxide scale through a pickling mechanism; the pickling process is provided with a mixed acid stage and a mixed acid stage. The invention reciprocates acid spraying at different positions on the surface of the alloy strip, and removes the oxide scale on the alloy strip by pickling reaction. The reaction of the acid solution and the oxide scale requires time, and the reciprocating movement leaves a time interval for the reaction of the oxide scale in the acid spraying box with the surface of the alloy strip, thereby reducing the use of the acid solution, and at the same time, the washed oxide scale can be washed away from the surface of the alloy strip, thereby improving the pickling effect.

Description

Technical Field

[0001] The invention belongs to the technical field of nickel-based alloy hot rolling, and in particular relates to an annealing and pickling process for a heavy nickel-based alloy N08825 strip steel. Background Art

[0002] N08825 alloy is a nickel-chromium-iron alloy based on nickel. It is a high-temperature corrosion-resistant alloy with strong corrosion resistance to acid and alkali solutions, especially in chloride ion solutions, which has stronger stress corrosion resistance than other metals. It is widely used in shipbuilding, pressure vessels, petrochemical industry, heat exchangers and other industries.

[0003] After searching, a circulating pickling device for hot-rolled nickel-based alloy stainless steel medium and thick plates with publication number CN112779547A is found, which includes a pickling box; the bottom of the right end of the front side of the pickling box is connected to a circulating pump, and the left end of the circulating pump is connected to the right end of the main pipeline; the left and right ends of the inner cavity of the pickling box are rotatably connected with steel plate positioning rollers; a driving motor is arranged at the bottom of the rear side of the pickling box, and the driving motor is connected to the main cleaning roller through a synchronous belt. The following problems occur during the processing: 1) The steel plate passes through the middle of the one-way U-shaped nozzle 40101, and the acid solution is evenly sprayed from the nozzle of the one-way U-shaped nozzle 40101 onto both sides of the steel plate, so that The oxide scale on the surface of the steel plate fully reacts with the acidic solution, and then the reacted oxide scale is brushed by the main cleaning roller 8 and the auxiliary cleaning roller 9. When passing through the two-way U-shaped nozzle 40201, the nozzle facing left of the two-way U-shaped nozzle 40201 flushes away the brushed oxide scale, and then the nozzle facing right of the two-way U-shaped nozzle 40201 continues to spray the acidic solution on the surface of the steel plate. Since the reaction between the acid and the oxide scale takes time, when the acid is continuously sprayed on the surface of the box alloy strip during the reaction, the reaction time between the acid and the strip surface is shorter, and the acid is flushed away by the subsequent acid, resulting in excessive use of the acid and a large amount of waste of acid. Summary of the invention

[0004] The purpose of the invention is to overcome the shortcomings of the prior art and provide a heavy nickel-based alloy N08825 strip steel annealing and pickling process.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A heavy nickel-based alloy N08825 strip steel annealing and pickling process, the process steps are as follows:

[0007] Step 1): Uncoiling and welding: The uncoiling alloy steel strip is straightened by a straightening machine, and then the raised part of the end of the alloy steel strip is cut off by a shearing machine, and then the two adjacent groups of iron-nickel-based alloy steel strips are welded and fixed by a welding mechanism to facilitate the overall pickling of the iron-nickel-based alloy steel strip;

[0008] Step 2): Annealing: annealing the iron-nickel alloy strip steel by an annealing device, and then cooling;

[0009] Step 3): Phosphorus-breaking shot blasting: Shot blasting the annealed iron-nickel alloy strip steel by a shot blasting machine;

[0010] Step 4): Pickling: The iron-nickel alloy strip is pickled by a pickling mechanism to remove the oxide scale; the pickling process is provided with a mixed acid stage and a mixed acid stage; the HNO3 concentration of the mixed acid stage is 51-57g / L, the HF concentration is 5-7g / L, the metal ion is less than 42g / L, and the temperature is 45-55°C; the HNO3 concentration of the mixed acid stage is 47-58g / L, the HF concentration is less than 0.7g / L, the metal ion is less than 42g / L, and the temperature is 35-45°C;

[0011] Step 5): Cleaning and drying: The pickled iron-nickel alloy strip is cleaned by a cleaning mechanism, and then dried by a drying system before curling.

[0012] The pickling device of the mixed acid pickling section in step 4) comprises a pickling box, guide rollers, a spraying mechanism, a brushing mechanism, and a partition, wherein the two sides of the bottom of the pickling box are respectively provided with an acid outlet and an acid inlet, a plurality of guide rollers are provided inside the pickling box, a partition is provided in the middle of the inside of the pickling box, a spraying mechanism is provided on one side of the partition, and a brushing mechanism is provided on the other side of the partition;

[0013] The spraying mechanism includes a support frame, a first motor, a rotating disk, a round rod, a swing frame, a connecting block, a first rack, a first gear, a second rack, a first connecting frame, a second connecting frame, a first acid pipe, a second acid pipe, and an acid spray box. The first motor is connected to the support frame through a motor bracket, the support frame is fixedly connected to the top of the pickling box, the output end of the first motor is connected to the rotating disk, one side of the rotating disk is fixedly connected to the round rod, the round rod is slidably connected to the swing frame, one side of the swing frame is fixedly connected to the connecting block, the connecting block is fixedly connected to the first rack, one end of the first rack is fixedly connected to the first connecting frame, the first rack is meshed with the first gear, the first gear is movably connected to the support frame, the first gear and the second rack are meshed, one end of the second rack is fixedly connected to the second connecting frame, the first connecting frame is connected to the outer sides of a plurality of first acid pipes, the second connecting frame is connected to the outer sides of a plurality of second acid pipes, one end of the first acid pipe and the second acid pipe are both connected to the acid spray box, and the acid spray boxes on the first acid pipe and the second acid pipe are distributed in sequence at intervals;

[0014] The spraying mechanism also includes a guide bar, a swing plate, a U-shaped frame, a synchronous frame, a slide rail, a slide frame, a first electric push rod, a fixed box, a connecting rod, and a limit plate. A plurality of guide bars distributed at intervals are arranged in the acid spraying box, the middle of the guide bar is movably connected to the acid spraying box, the middle of the guide bar is fixedly connected to one end of the swing plate, a round convex column is arranged on one side of the other end of the swing plate, the round convex column is slidably connected to the U-shaped frame, one side of the U-shaped frame is fixedly connected to the connecting rod, the connecting rod is slidably connected to the limit plate, the limit plate is fixedly connected to the acid spraying box, and the other side of the U-shaped frame is fixedly connected to the synchronous frame, each group of synchronous frames is connected to the acid spraying boxes on the two groups of first acid pipes, and each of the other two groups of synchronous frames is connected to the acid spraying boxes on the two groups of second acid pipes, both ends of the synchronous frame are slidably connected to the slide rails respectively, the slide rails are fixedly connected to the slide frame, the slide frame is slidably connected to the fixed box, the fixed box is fixedly connected to the pickling box, the slide frame is connected to the first electric push rod, and the output end of the first electric push rod is connected to the fixed box;

[0015] The acid is supplied into the pickling box through the acid inlet and discharged through the acid outlet. The first motor provides power for the rotation of the rotating disk, and the rotating disk drives the round rod to rotate. The round rod slides in the swing frame and drives the swing frame to move back and forth. The swing frame drives the first rack to move back and forth through the connecting block, and the first rack drives the second rack to move through the first gear. The first rack drives the first connecting frame to move, and the second rack drives the second connecting frame to move. The first connecting frame and the second connecting frame then reciprocate close to and away from each other, thereby driving the first acid tube and the second acid tube to reciprocate close to and away from each other, thereby driving the acid spray box on the first acid tube and the acid spray box on the second acid tube to reciprocate close to and away from each other. At the same time, acid is supplied to the acid spray box through the first acid tube and the second acid tube. At the same time, the acid temperature in the first acid tube and the second acid tube is greater than the temperature of the acid in the pickling box. The acid is then sprayed onto the alloy strip through the acid spray box, which can better remove the surface of the alloy strip. The oxide scale is sprayed reciprocatingly on different positions on the surface of the alloy strip, and the oxide scale on the alloy strip is removed by pickling reaction. The reaction between the acid and the oxide scale requires time, and the reciprocating movement leaves a time interval for the oxide scale reaction between the acid spray box and the surface of the alloy strip, and at the same time, the washed oxide scale can be flushed away from the surface of the alloy strip; the first electric push rod provides power for the movement of the slide, and the slide then drives the slide rail to move, and the slide rail then drives the synchronous frame to move, and the synchronous frame drives the swing plate and the guide bar to rotate through the U-shaped frame, and the synchronous frame drives the connecting rod to slide on the limit plate, and the guide bar then swings back and forth on the acid spray box, guiding the acid to swing left and right perpendicular to the moving direction of the acid spray box, so that the sprayed acid can better wash away the oxide scale on the surface of the alloy strip, and at the same time, the sprayed acid can cover the gap between the acid spray boxes through swinging, so as to ensure that the acid sprayed from the acid spray box is in better contact with the alloy strip.

[0016] Preferably, the brushing mechanism includes a sliding box, a sliding box, a pulling plate, a second electric push rod, a square rod, a sealing cylinder, a fixed plate, a second motor, a synchronous shaft, a cylinder, a collecting plate, an arc-shaped hole, a frustum, a guide plate, and a cleaning brush. Both ends of the sealing cylinder are respectively fixedly connected to the square rod, the square rod is slidably connected to the sliding box, the top of the sliding box is fixedly connected to one end of the pulling plate, the other end of the pulling plate is connected to the output end of the second electric push rod, the second electric push rod is connected to the sliding box, the sliding box is fixedly connected to the pickling box, the sliding box is slidably connected to the sliding box, a pair of fixed plates are provided on the inner side of the sealing cylinder, and the second motor is connected to the sliding box. The motor is connected to one of the fixed plates through a gear box, a plurality of evenly arranged synchronous shafts are arranged on the sealing cylinder, and the synchronous shafts are connected end to end through chains and sprockets, the output end of the second motor is connected to one of the synchronous shafts through a gear box, the synchronous shafts are movably connected to the fixed plate, one end of the synchronous shaft passes through the sealing cylinder and is fixedly connected to one side of the cylinder, a plurality of current collecting plates are arranged outside the center of the cylinder, a frustum is arranged on the inner wall of the cylinder, a plurality of guide plates are arranged outside the center of the frustum, a plurality of arc holes are arranged at one end of the cylinder, a cleaning brush is arranged on one side of the cylinder, an arc hole corresponding to the cylinder is arranged on the cleaning brush, and a plurality of openings are arranged at one end of the cleaning brush;

[0017] The second motor provides power for the rotation of the synchronous shaft through the gear box. The synchronous shaft drives other synchronous shafts to rotate through the sprocket and chain. The synchronous shaft then drives the cylinder and the cleaning brush to rotate, and at the same time drives the cone, guide plate, and collecting plate to rotate. The collecting plate brings the surrounding acid into the cylinder, and at the same time guides the acid to the arc hole through the guide plate and the cone, and flows to the alloy strip through the hole on the cleaning brush, so that the alloy strip is rinsed and brushed, and the detached oxide scale can be flushed away from the alloy strip at the same time; the second electric push rod provides power for the movement of the pulling plate, and the pulling plate then drives the sliding box to slide in the sliding box. The sliding box drives the sealing cylinder and the cleaning brush to move through the square rod, and the position of the cleaning brush relative to the alloy strip can be adjusted according to the degree of wear of the cleaning brush.

[0018] Preferably, the scrubbing mechanism further comprises a third motor, a rotating plate, a reciprocating frame, a fixed frame, and a T-shaped plate, both ends of the sealing cylinder are respectively fixedly connected to the T-shaped plate, the top of the T-shaped plate is slidably connected to the fixed frame, one side in the middle of the fixed frame is fixedly connected to one end of the reciprocating frame, the reciprocating frame is slidably connected to the pickling box, the reciprocating frame is movably connected to the fixed column on the rotating plate, one side of the rotating plate is connected to the output end of the third motor, and the third motor is connected to the pickling box through a motor bracket;

[0019] The third motor provides power for the rotation of the rotating plate. The rotating plate drives the reciprocating frame to move back and forth through the fixed column, and then drives the T-plate to move back and forth through the fixed frame, and then drives the sealing cylinder and the cleaning brush to move back and forth, so that the cleaning brush swings back and forth when brushing, ensuring that the gaps between the cleaning brushes can also be covered, and the sealing cylinder drives the square rod to slide and slide up; when adjusting the position of the cleaning brush relative to the alloy strip, the T-plate adapts to sliding on the fixed frame.

[0020] Preferably, the first connecting frame and the second connecting frame are both F-shaped.

[0021] Preferably, the moving directions of the first rack and the second rack are parallel to the surface of the strip steel.

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

[0023] 1) The first motor provides power for the rotation of the rotating disk, the rotating disk drives the round rod to rotate, the round rod slides in the swing frame and drives the swing frame to move back and forth, the swing frame drives the first rack to move back and forth through the connecting block, the first rack drives the second rack to move through the first gear, the first rack drives the first connecting frame to move, the second rack drives the second connecting frame to move, the first connecting frame and the second connecting frame then move back and forth, and then drive the first acid tube and the second acid tube to move back and forth, and then drive the acid spray box on the first acid tube and the acid spray box on the second acid tube to move back and forth, and at the same time, the first acid tube and the second acid tube are used to spray the acid box Acid is supplied, and the temperature of the acid in the first acid pipe and the second acid pipe is greater than that in the pickling tank. The acid is then sprayed toward the alloy steel strip through the acid spray box, which can better remove the oxide scale on the surface of the alloy steel strip. The acid is sprayed reciprocatingly at different positions on the surface of the alloy steel strip, and the oxide scale on the alloy steel strip is removed by pickling reaction. The reaction between the acid and the oxide scale requires time, and the reciprocating movement leaves a time interval for the reaction between the oxide scale in the acid spray box and the surface of the alloy steel strip, thereby reducing the use of the acid. At the same time, the washed oxide scale can be washed away from the surface of the alloy steel strip, thereby improving the pickling effect and reducing the consumption and use of the acid;

[0024] 2) The first electric push rod provides power for the movement of the slide, and the slide then drives the slide rail to move, and the slide rail then drives the synchronous frame to move. The synchronous frame drives the swing plate and the guide bar to rotate through the U-shaped frame, and the synchronous frame drives the connecting rod to slide on the limit plate. The guide bar then swings back and forth on the acid spray box, guiding the acid liquid to swing left and right perpendicular to the moving direction of the acid spray box, so that the sprayed acid liquid can better wash away the oxide scale on the surface of the alloy strip. At the same time, the sprayed acid can cover the gap between the acid spray boxes through swinging, ensuring that the acid sprayed from the acid spray box is in better contact with the alloy strip, thereby improving the pickling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Attached Figure 1 It is a structural schematic diagram of a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0026] Attached Figure 2 It is a schematic diagram of the internal structure of a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0027] Attached Figure 3 It is a schematic diagram of the structure of a spray cleaning mechanism in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0028] Attached Figure 4 It is a schematic diagram of the structure of the first rack in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0029] Attached Figure 5 It is a schematic diagram of the structure of the second acid tube in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0030] Attached Figure 6 It is a structural schematic diagram of an acid spray box in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0031] Attached Figure 7 It is a structural schematic diagram of a brushing mechanism in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0032] Attached Figure 8 It is a schematic diagram of the internal structure of a sealing cylinder in a heavy nickel-based alloy N08825 strip steel annealing and pickling device of the present invention;

[0033] In the figure: 1, pickling box; 2, guide roller; 3, spraying mechanism; 31, support frame; 32, first motor; 33, rotating disk; 34, round rod; 35, swing frame; 36, connecting block; 37, first rack; 38, first gear; 39, second rack; 301, first connecting frame; 302, second connecting frame; 303, first acid pipe; 304, second acid pipe; 305, acid spray box; 306, guide bar; 307, swing plate; 308, U-shaped frame; 309, synchronous frame; 311, slide rail; 312, slide frame; 313, first electric push rod ; 314, fixed box; 315, connecting rod; 316, limit plate; 4, brushing mechanism; 41, sliding box; 42, sliding box; 43, pulling plate; 44, second electric push rod; 45, square rod; 46, sealing cylinder; 47, fixed plate; 48, second motor; 49, synchronous shaft; 401, cylinder; 402, collecting plate; 403, arc hole; 404, frustum; 405, guide plate; 406, cleaning brush; 407, third motor; 408, rotating plate; 409, reciprocating frame; 411, fixed frame; 412, T-plate; 5, partition. DETAILED DESCRIPTION

[0034] To facilitate the understanding of those skilled in the art, Figure 1-8 , the technical solution of the present invention is further specifically described.

[0035] A heavy nickel-based alloy N08825 strip steel annealing and pickling process, the process steps are as follows:

[0036] Step 1): Uncoiling and welding: The uncoiling alloy steel strip is straightened by a straightening machine, and then the raised part of the end of the alloy steel strip is cut off by a shearing machine, and then the two adjacent groups of iron-nickel-based alloy steel strips are welded and fixed by a welding mechanism to facilitate the overall pickling of the iron-nickel-based alloy steel strip;

[0037] Step 2): Annealing: annealing the iron-nickel alloy strip steel by an annealing device, and then cooling;

[0038] Step 3): Phosphorus-breaking shot blasting: Shot blasting the annealed iron-nickel alloy strip steel by a shot blasting machine;

[0039] Step 4): Pickling: The iron-nickel alloy strip is pickled by a pickling mechanism to remove the oxide scale; the pickling process is provided with a mixed acid stage and a mixed acid stage; the HNO3 concentration of the mixed acid stage is 51-57g / L, the HF concentration is 5-7g / L, the metal ion is less than 42g / L, and the temperature is 45-55°C; the HNO3 concentration of the mixed acid stage is 47-58g / L, the HF concentration is less than 0.7g / L, the metal ion is less than 42g / L, and the temperature is 35-45°C;

[0040] Step 5): Cleaning and drying: The pickled iron-nickel alloy strip is cleaned by a cleaning mechanism, and then dried by a drying system before curling.

[0041] The pickling device of the mixed acid pickling section in step 4) comprises a pickling box 1, a guide roller 2, a spraying mechanism 3, a brushing mechanism 4, and a partition 5, wherein the pickling box 1 is provided with an acid outlet and an acid inlet on both sides of the bottom, a plurality of guide rollers 2 are provided inside the pickling box 1, a partition 5 is provided in the middle of the inside of the pickling box 1, a spraying mechanism 3 is provided on one side of the partition 5, and a brushing mechanism 4 is provided on the other side of the partition 5;

[0042] The spraying mechanism 3 includes a support frame 31, a first motor 32, a rotating disk 33, a round rod 34, a swing frame 35, a connecting block 36, a first rack 37, a first gear 38, a second rack 39, a first connecting frame 301, a second connecting frame 302, a first acid tube 303, a second acid tube 304, and an acid spray box 305. The first motor 32 is connected to the support frame 31 through a motor bracket, the support frame 31 is fixedly connected to the top of the pickling box 1, the output end of the first motor 32 is connected to the rotating disk 33, one side of the rotating disk 33 is fixedly connected to the round rod 34, the round rod 34 is slidably connected to the swing frame 35, and one side of the swing frame 35 is fixedly connected to the connecting block 36 , the connecting block 36 is fixedly connected to the first rack 37, one end of the first rack 37 is fixedly connected to the first connecting frame 301, the first rack 37 is meshed with the first gear 38, the first gear 38 is movably connected to the support frame 31, the first gear 38 is meshed with the second rack 39, one end of the second rack 39 is fixedly connected to the second connecting frame 302, the first connecting frame 301 is connected to the outer sides of a plurality of first acid tubes 303, the second connecting frame 302 is connected to the outer sides of a plurality of second acid tubes 304, one end of the first acid tube 303 and the second acid tube 304 are both connected to the acid spray box 305, and the acid spray boxes 305 on the first acid tube 303 and the second acid tube 304 are sequentially spaced;

[0043] The spraying mechanism 3 also includes a guide bar 306, a swing plate 307, a U-shaped frame 308, a synchronous frame 309, a slide rail 311, a slide 312, a first electric push rod 313, a fixed box 314, a connecting rod 315, and a limit plate 316. A plurality of guide bars 306 are arranged in the acid spray box 305. The middle of the guide bar 306 is movably connected to the acid spray box 305. The middle of the guide bar 306 is fixedly connected to one end of the swing plate 307. A round convex column is arranged on one side of the other end of the swing plate 307. The round convex column is slidably connected to the U-shaped frame 308. One side of the U-shaped frame 308 is fixedly connected to the connecting rod 315. The connecting rod 315 and the limit plate 316 slide. The limiting plate 316 is fixedly connected to the acid spray box 305, the other side of the U-shaped frame 308 is fixedly connected to the synchronous frame 309, each group of synchronous frames 309 is connected to the acid spray boxes 305 on the two groups of first acid tubes 303, and the other two groups of synchronous frames 309 are each connected to the acid spray boxes 305 on the two groups of second acid tubes 304, both ends of the synchronous frames 309 are slidably connected to the slide rails 311, the slide rails 311 are fixedly connected to the slide 312, the slide 312 is slidably connected to the fixed box 314, the fixed box 314 is fixedly connected to the pickling box 1, the slide 312 is connected to the first electric push rod 313, and the output end of the first electric push rod 313 is connected to the fixed box 314;

[0044] Acid is supplied into the pickling box 1 through the acid inlet and discharged through the acid outlet. The first motor 32 provides power for the rotation of the rotating disk 33. The rotating disk 33 drives the round rod 34 to rotate. The round rod 34 slides in the swing frame 35 and drives the swing frame 35 to move back and forth. The swing frame 35 drives the first rack 37 to move back and forth through the connecting block 36. The first rack 37 drives the second rack 39 to move through the first gear 38. The first rack 37 drives the first connecting frame 301 to move. The second rack 39 drives the second connecting frame 302 to move. The first connecting frame 301 and the second connecting frame 302 move. The bracket 302 then moves back and forth, thereby driving the first acid tube 303 and the second acid tube 304 to move back and forth, thereby driving the acid spray box 305 on the first acid tube 303 and the acid spray box 305 on the second acid tube 304 to move back and forth, and at the same time, the acid spray box 305 is supplied with acid through the first acid tube 303 and the second acid tube 304. At the same time, the temperature of the acid in the first acid tube 303 and the second acid tube 304 is greater than the temperature of the acid in the pickling tank 1, and the acid is then sprayed onto the alloy strip through the acid spray box 305, which can better remove the surface of the alloy strip. The oxide scale on the surface of the alloy steel strip is removed by acid washing reaction. The reaction between the acid and the oxide scale takes time, and the reciprocating movement leaves a time interval for the reaction between the oxide scale in the acid spray box 305 and the surface of the alloy steel strip, thereby reducing the use of the acid. At the same time, the washed oxide scale can be washed away from the surface of the alloy steel strip, thereby reducing the consumption of the acid. The first electric push rod 313 provides power for the movement of the slide 312, and the slide 312 further drives the slide rail 311 to move, and the slide rail 311 further drives the synchronous frame 309 The synchronous frame 309 drives the swing plate 307 and the guide bar 306 to rotate through the U-shaped frame 308, and the synchronous frame 309 drives the connecting rod 315 to slide on the limit plate 316, and the guide bar 306 then swings back and forth on the acid spray box 305, guiding the acid liquid to swing left and right perpendicular to the moving direction of the acid spray box 305, so that the sprayed acid liquid can better wash away the oxide scale on the surface of the alloy strip. At the same time, the sprayed acid liquid can cover the gap between the acid spray boxes 305 and the acid spray boxes 305 through swinging, ensuring that the acid liquid sprayed from the acid spray box 305 is in better contact with the alloy strip.

[0045] The brushing mechanism 4 includes a sliding box 41, a sliding box 42, a pulling plate 43, a second electric push rod 44, a square rod 45, a sealing cylinder 46, a fixed plate 47, a second motor 48, a synchronous shaft 49, a cylinder 401, a collecting plate 402, an arc hole 403, a frustum 404, a guide plate 405, and a cleaning brush 406. Both ends of the sealing cylinder 46 are fixedly connected to the square rod 45 respectively, the square rod 45 and the sliding box 42 are slidably connected, the top of the sliding box 42 is fixedly connected to one end of the pulling plate 43, the other end of the pulling plate 43 is connected to the output end of the second electric push rod 44, the second electric push rod 44 is connected to the sliding box 41, the sliding box 41 is fixedly connected to the pickling box 1, the sliding box 41 and the sliding box 42 are slidably connected, a pair of fixed plates 47 are provided on the inner side of the sealing cylinder 46, and the second motor 48 is connected to the sliding box 41. The sealing cylinder 46 is connected to one of the groups of fixed plates 47 through a gear box, and a plurality of evenly arranged synchronous shafts 49 are provided on the sealing cylinder 46. The synchronous shafts 49 are connected end to end through chains and sprockets. The output end of the second motor 48 is connected to one of the groups of synchronous shafts 49 through a gear box, and the synchronous shaft 49 is movably connected to the fixed plate 47. One end of the synchronous shaft 49 passes through the sealing cylinder 46 and is fixedly connected to one side of the cylinder 401. A plurality of collecting plates 402 are provided on the outer side of the center of the cylinder 401, a frustum 404 is provided on the inner wall of the cylinder 401, and a plurality of guide plates 405 are provided on the outer side of the center of the frustum 404. A plurality of arc holes 403 are provided at one end of the cylinder 401, and a cleaning brush 406 is provided on one side of the cylinder 401. The cleaning brush 406 is provided with arc holes 403 corresponding to the cylinder 401, and a plurality of openings are provided at one end of the cleaning brush 406.

[0046] The second motor 48 provides power for the synchronous shaft 49 to rotate through the gear box. The synchronous shaft 49 drives other synchronous shafts 49 to rotate through the sprocket and chain. The synchronous shaft 49 then drives the cylinder 401 and the cleaning brush 406 to rotate, and at the same time drives the cone 404, the guide plate 405, and the collecting plate 402 to rotate. The collecting plate 402 brings the surrounding acid into the cylinder 401, and at the same time guides the acid to the arc hole 403 through the guide plate 405 and the cone 404, and flows to the alloy strip through the hole on the cleaning brush 406, so that the alloy strip is rinsed and brushed, and the detached oxide scale can be flushed away from the alloy strip, so as to improve the effect of acid pickling; the second electric push rod 44 provides power for the movement of the pulling plate 43, and the pulling plate 43 then drives the sliding box 42 to slide in the sliding box 41. The sliding box 42 drives the sealing cylinder 46 and the cleaning brush 406 to move through the square rod 45, and the position of the cleaning brush 406 relative to the alloy strip can be adjusted according to the wear degree of the cleaning brush 406.

[0047] The scrubbing mechanism 4 also includes a third motor 407, a rotating plate 408, a reciprocating frame 409, a fixed frame 411, and a T-shaped plate 412. Both ends of the sealing cylinder 46 are fixedly connected to the T-shaped plate 412, the top of the T-shaped plate 412 is slidably connected to the fixed frame 411, one side in the middle of the fixed frame 411 is fixedly connected to one end of the reciprocating frame 409, the reciprocating frame 409 is slidably connected to the pickling box 1, the reciprocating frame 409 is movably connected to the fixed column on the rotating plate 408, one side of the rotating plate 408 is connected to the output end of the third motor 407, and the third motor 407 is connected to the pickling box 1 through the motor bracket;

[0048] The third motor 407 provides power for the rotation of the rotating plate 408. The rotating plate 408 drives the reciprocating frame 409 to move back and forth through the fixed column, and then drives the T-plate 412 to move back and forth through the fixed frame 411, and then drives the sealing cylinder 46 and the cleaning brush 406 to move back and forth, so that the cleaning brush 406 can swing back and forth when brushing, ensuring that the gaps between the cleaning brushes 406 can also be covered, thereby improving the pickling effect. The sealing cylinder 46 drives the square rod 45 to slide and slide upward; when adjusting the position of the cleaning brush 406 relative to the alloy strip, the T-plate 412 adapts to sliding on the fixed frame 411.

[0049] The first connecting frame 301 and the second connecting frame 302 are both F-shaped.

[0050] The moving directions of the first rack 37 and the second rack 39 are parallel to the surface of the strip.

[0051] A heavy nickel-based alloy N08825 strip steel annealing and pickling device, the working process is as follows:

[0052] Acid is supplied into the pickling box through the acid inlet, and the acid is discharged through the acid outlet. The first motor provides power for the rotation of the rotating disk, and the rotating disk drives the round rod to rotate. The round rod slides in the swing frame and drives the swing frame to move back and forth. The swing frame drives the first rack to move back and forth through the connecting block, and the first rack drives the second rack to move through the first gear. The first rack drives the first connecting frame to move, and the second rack drives the second connecting frame to move. The first connecting frame and the second connecting frame then reciprocate to approach and move away, thereby driving the first acid pipe and the second acid pipe to reciprocate to approach and move away, thereby driving the acid spray box on the first acid pipe and the acid spray box on the second acid pipe to reciprocate to approach and move away. The acid is separated from the steel strip, and acid is supplied to the acid spray box through the first acid pipe and the second acid pipe. At the same time, the temperature of the acid in the first acid pipe and the second acid pipe is greater than the temperature of the acid in the pickling box. The acid is then sprayed onto the alloy steel strip through the acid spray box, which can better remove the oxide scale on the surface of the alloy steel strip. The acid is sprayed back and forth at different positions on the surface of the alloy steel strip, and the oxide scale on the alloy steel strip is removed by pickling reaction. The reaction of the acid and the oxide scale requires time, and the reciprocating movement leaves a time interval for the reaction of the oxide scale in the acid spray box with the surface of the alloy steel strip, and at the same time, the washed oxide scale can be washed away from the surface of the alloy steel strip; the first electric push rod provides power for the movement of the slide, and the slide moves forward. The U-shaped frame drives the sliding rail to move, and the sliding rail drives the synchronous frame to move. The synchronous frame drives the swing plate and the guide bar to rotate through the U-shaped frame. The synchronous frame drives the connecting rod to slide on the limit plate, and the guide bar then swings back and forth on the acid spray box, guiding the acid liquid to swing left and right perpendicular to the moving direction of the acid spray box, so that the sprayed acid liquid can better wash away the oxide scale on the surface of the alloy strip. At the same time, the sprayed acid liquid can cover the gap between the acid spray boxes through the swing, ensuring that the acid sprayed from the acid spray box is in better contact with the alloy strip. The alloy strip after spraying passes through the brushing mechanism, and the second motor provides power for the rotation of the synchronous shaft through the gear box. The synchronous shaft is driven by the sprocket and The chain drives other synchronous shafts to rotate, and the synchronous shaft drives the cylinder and the cleaning brush to rotate, and drives the cone, guide plate, and collecting plate to rotate at the same time. The collecting plate brings the surrounding acid into the cylinder, and guides the acid to the arc hole through the guide plate and cone, and flows to the alloy steel strip through the hole on the cleaning brush, so that the alloy steel strip can be washed and brushed at the same time, and the detached oxide scale can be washed away from the alloy steel strip; the second electric push rod provides power for the movement of the pulling plate, and the pulling plate drives the sliding box to slide in the sliding box. The sliding box drives the sealing cylinder and the cleaning brush to move through the square rod, and the position of the cleaning brush relative to the alloy steel strip can be adjusted according to the wear degree of the cleaning brush;

[0053] The third motor provides power for the rotation of the rotating plate. The rotating plate drives the reciprocating frame to move back and forth through the fixed column, and then drives the T-plate to move back and forth through the fixed frame, and then drives the sealing cylinder and the cleaning brush to move back and forth, so that the cleaning brush swings back and forth when brushing, ensuring that the gaps between the cleaning brushes can also be covered, and the sealing cylinder drives the square rod to slide and slide up; when adjusting the position of the cleaning brush relative to the alloy strip, the T-plate adapts to sliding on the fixed frame.

[0054] 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 heavy nickel-based alloy N08825 strip annealing and pickling process, characterized in that The process steps are as follows: Step 1): Uncoiling and welding: The uncoiling alloy steel strip is straightened by a straightening machine, and then the raised part of the end of the alloy steel strip is cut off by a shearing machine, and then the two adjacent groups of iron-nickel-based alloy steel strips are welded and fixed by a welding mechanism to facilitate the overall pickling of the iron-nickel-based alloy steel strip; Step 2): Annealing: annealing the iron-nickel alloy strip steel by an annealing device, and then cooling; Step 3): phosphorus-breaking shot blasting; the annealed iron-nickel alloy strip is shot blasted by a shot blasting machine; Step 4): Pickling: Pickling the iron-nickel alloy strip to remove the oxide scale by a pickling mechanism; the pickling process includes a mixed acid stage and a mixed acid stage; the mixed acid stage has an HNO3 concentration of 51-57 g / L, an HF concentration of 5-7 g / L, metal ions <42 g / L, and a temperature of 45-55°C; the mixed acid stage has an HNO3 concentration of 47-58 g / L, an HF concentration of <0.7 g / L, metal ions <42 g / L, and a temperature of 35-45°C; Step 5): Cleaning and drying: The pickled iron-nickel alloy steel strip is cleaned by a cleaning mechanism, and then dried by a drying system before curling; A heavy nickel-based alloy N08825 strip annealing and pickling device in the mixed acid pickling section in step 4), comprising a pickling box, guide rollers, a spraying mechanism, a brushing mechanism, and a partition, characterized in that an acid outlet and an acid inlet are respectively provided on both sides of the bottom of the pickling box, a plurality of guide rollers are provided on the inside of the pickling box, a partition is provided in the middle of the inside of the pickling box, a spraying mechanism is provided on one side of the partition, and a brushing mechanism is provided on the other side of the partition; The spraying mechanism comprises a support frame, a first motor, a rotating disk, a round rod, a swing frame, a connecting block, a first rack, a first gear, a second rack, a first connecting frame, a second connecting frame, a first acid tube, a second acid tube, and an acid spraying box. The first motor is connected to the support frame through a motor bracket, the support frame is fixedly connected to the top of the pickling box, the output end of the first motor is connected to the rotating disk, one side of the rotating disk is fixedly connected to the round rod, the round rod is slidably connected to the swing frame, one side of the swing frame is fixedly connected to the connecting block, the connecting block is fixedly connected to the first rack, one end of the first rack is fixedly connected to the first connecting frame, the first rack is meshed with the first gear, the first gear is movably connected to the support frame, the first gear and the second rack are meshed, one end of the second rack is fixedly connected to the second connecting frame, the first connecting frame is connected to the outer sides of a plurality of first acid tubes, the second connecting frame is connected to the outer sides of a plurality of second acid tubes, one end of the first acid tube and the second acid tube are both connected to the acid spraying box, and the acid spraying boxes on the first acid tube and the second acid tube are distributed in sequence; the moving directions of the first rack and the second rack are parallel to the surface of the alloy strip; The spraying mechanism also includes a guide bar, a swing plate, a U-shaped frame, a synchronous frame, a slide rail, a slide frame, a first electric push rod, a fixed box, a connecting rod, and a limit plate. A plurality of guide bars distributed at intervals are arranged in the acid spraying box, the middle of the guide bar is movably connected to the acid spraying box, the middle of the guide bar is fixedly connected to one end of the swing plate, a round convex column is arranged on one side of the other end of the swing plate, the round convex column is slidably connected to the U-shaped frame, one side of the U-shaped frame is fixedly connected to the connecting rod, the connecting rod is slidably connected to the limit plate, the limit plate is fixedly connected to the acid spraying box, and the other side of the U-shaped frame is fixedly connected to the synchronous frame, each group of synchronous frames is connected to the acid spraying boxes on the two groups of first acid pipes, and each group of the other two groups of synchronous frames is connected to the acid spraying boxes on the two groups of second acid pipes, both ends of the synchronous frame are slidably connected to the slide rails respectively, the slide rails are fixedly connected to the slide frame, the slide frame is slidably connected to the fixed box, the fixed box is fixedly connected to the pickling box, the slide frame is connected to the first electric push rod, and the output end of the first electric push rod is connected to the fixed box.

2. The annealing and pickling process of heavy nickel-based alloy N08825 strip steel according to claim 1, characterized in that The brushing mechanism includes a sliding box, a sliding box, a pulling plate, a second electric push rod, a square rod, a sealing cylinder, a fixed plate, a second motor, a synchronous shaft, a cylinder, a collecting plate, an arc hole, a frustum, a guide plate, and a cleaning brush. Both ends of the sealing cylinder are fixedly connected to the square rod, the square rod is slidably connected to the sliding box, the top of the sliding box is fixedly connected to one end of the pulling plate, the other end of the pulling plate is connected to the output end of the second electric push rod, the second electric push rod is connected to the sliding box, the sliding box is fixedly connected to the pickling box, the sliding box is slidably connected to the sliding box, a pair of fixed plates are provided on the inner side of the sealing cylinder, and the second motor is connected to the second electric push rod through a gear. The wheel box is connected to one of the fixed plates, a plurality of evenly arranged synchronous shafts are provided on the sealing cylinder, the synchronous shafts are connected end to end by chains and sprockets, the output end of the second motor is connected to one of the synchronous shafts through the gear box, the synchronous shaft and the fixed plate are movably connected, one end of the synchronous shaft passes through the sealing cylinder and is fixedly connected to one side of the cylinder, a plurality of collecting plates are provided on the outer side of the center of the cylinder, a frustum is provided on the inner wall of the cylinder, a plurality of guide plates are provided on the outer side of the center of the frustum, a plurality of arc holes are provided at one end of the cylinder, a cleaning brush is provided on one side of the cylinder, the cleaning brush is provided with arc holes corresponding to the cylinder, and a plurality of openings are provided at one end of the cleaning brush.

3. The annealing and pickling process of heavy nickel-based alloy N08825 strip steel according to claim 2, characterized in that The scrubbing mechanism also includes a third motor, a rotating plate, a reciprocating frame, a fixed frame, and a T-shaped plate. Both ends of the sealing cylinder are fixedly connected to the T-shaped plate respectively, the top of the T-shaped plate is slidably connected to the fixed frame, the middle side of the fixed frame is fixedly connected to one end of the reciprocating frame, the reciprocating frame is slidably connected to the pickling box, the reciprocating frame is movably connected to the fixed column on the rotating plate, one side of the rotating plate is connected to the output end of the third motor, and the third motor is connected to the pickling box through a motor bracket.

4. The annealing and pickling process of heavy nickel-based alloy N08825 strip steel according to claim 1, characterized in that The first connecting frame and the second connecting frame are both F-shaped.

Images