An acid-free descaling device for grain-oriented silicon steel sheets and strips

Abstract

This utility model provides an acid-free descaling device for grain-oriented silicon steel sheets and strips, comprising an uncoiling mechanism, a sheet and strip conveying mechanism, a normalizing heat treatment mechanism, and a brush descaling mechanism arranged sequentially along the traveling direction of the grain-oriented silicon steel sheets and strips. After the uncoiled grain-oriented silicon steel sheets and strips undergo normalizing heat treatment through the normalizing heat treatment mechanism via the sheet and strip conveying mechanism, the grain-oriented silicon steel sheets and strips are then moved to the brush descaling mechanism and physically polished by multiple brush roller groups, thereby achieving acid-free descaling of the grain-oriented silicon steel sheets and strips. This avoids the generation of waste liquid and sludge adhering to the surface of the grain-oriented silicon steel sheets and strips due to pickling, and improves the efficiency and surface quality of descaling of the grain-oriented silicon steel sheets and strips.

Description

Technical Field

[0001] This utility model relates to the field of strip grinding, and in particular to an acid-free descaling device for oriented silicon steel strips. Background Technology

[0002] Grain-oriented silicon steel sheets are indispensable materials in the manufacture of transformers and inductors, playing a crucial role in improving power transmission efficiency and reducing energy consumption. During the production of grain-oriented silicon steel, untreated sheets need to be conveyed into a normalizing furnace for processing. This ensures the growth of grains with the appropriate orientation, improves the microstructure of the steel, and enhances its magnetic properties. After heat treatment in the normalizing furnace, the surface of the grain-oriented silicon steel oxidizes and forms an oxide scale. This oxide scale needs to be removed; the process is called "descaling." Current methods primarily involve chemical treatments such as pickling to remove the oxide scale. However, pickling... The current method generates a lot of waste acid, which easily causes environmental pollution and is also costly, resulting in poor economic and environmental performance. At the same time, oriented silicon steel itself contains silicon, which forms silicon oxide after normalizing. To remove silicon oxide, hydrofluoric acid, which can react with silicon oxide, needs to be added to the pickling solution. Hydrofluoric acid reacts with silicon oxide to form fluorosilicic acid, and iron ions react with fluorosilicic acid to form fluorosilicates on the surface of silicon steel. Fluorosilicates are deposited on the surface of the strip, which is the so-called "sludge". The sludge affects the performance of oriented silicon steel strips and needs to be removed again. Therefore, it is necessary to design a low-cost, environmentally friendly, and highly efficient acid-free descaling equipment. Summary of the Invention

[0003] This invention provides an acid-free descaling device for grain-oriented silicon steel sheets and strips. Under the action of the sheet and strip conveying mechanism, the grain-oriented silicon steel sheets and strips pass through the normalizing heat treatment mechanism and then enter the grinding and descaling mechanism for physical grinding to remove oxide scale. The descaling process does not rely on chemical pickling and will not generate waste liquid or "sludge", which reduces the descaling cost of grain-oriented silicon steel sheets and improves the descaling efficiency and environmental friendliness of grain-oriented silicon steel sheets and strips.

[0004] The technical solution of this utility model is implemented as follows:

[0005] An acid-free descaling device for grain-oriented silicon steel strip includes the following components arranged sequentially along the traveling direction of the grain-oriented silicon steel strip:

[0006] An uncoiling mechanism for winding oriented silicon steel strips that have not undergone normalization heat treatment;

[0007] A strip conveyor mechanism is used to transport grain-oriented silicon steel strips.

[0008] The normalizing heat treatment mechanism includes a heating section and a cooling section arranged sequentially along the traveling direction of the grain-oriented silicon steel strip;

[0009] The brush descaling mechanism includes multiple brush roller assemblies arranged sequentially along the traveling direction of the grain-oriented silicon steel strip. Each brush roller assembly includes two rotating brush rollers that are opposite each other. The rotating brush rollers rotate to brush off the oxide scale that adheres to the surface of the grain-oriented silicon steel strip after normalizing heat treatment.

[0010] A winding mechanism is used to wind and collect descaled grain-oriented silicon steel strips.

[0011] Preferably, the rotating brush roller includes a roller body and brush strips densely arranged outside the rotating roller body; along the traveling direction of the oriented silicon steel strip, the brush strip density on the rotating brush roller in the subsequent brush roller assembly is greater than the brush strip density on the rotating brush roller in the previous brush roller assembly; while the oriented silicon steel strip is traveling, its surface is progressively polished to ensure the descaling effect.

[0012] Preferably, a particle impact descaling mechanism is provided between the brush descaling mechanism and the winding mechanism. The particle impact descaling mechanism can spray dense impact particles inside to break and remove the silica deposits on the surface of the oriented silicon steel strip; to prevent silica deposits that are difficult to remove by the inner brush roller from remaining on the surface of the oriented silicon steel strip.

[0013] Preferably, there are multiple uncoiling mechanisms, and a strip welding mechanism is provided between the multiple uncoiling mechanisms and the normalizing heat treatment mechanism. The strip welding mechanism is equipped with a movable welding machine. When the tail end of the previous oriented silicon steel strip enters the strip welding mechanism, the head end of the next oriented silicon steel strip enters the strip welding mechanism simultaneously, so that the welding machine can move and weld the two oriented silicon steel strips together and fix them. This eliminates the need for the placement process of the oriented silicon steel strip, avoids the downtime of the acid-free descaling equipment, and improves the descaling efficiency.

[0014] Preferably, the strip conveying mechanism includes a front conveying mechanism disposed between each uncoiling mechanism and strip welding mechanism, and a middle conveying mechanism disposed between the strip welding mechanism and the normalizing heat treatment mechanism. The strip welding mechanism and the middle conveying mechanism are provided with a first strip adjusting mechanism, which includes a first movable seat and a first rotating roller rotatably disposed on the movable seat. The grain-oriented silicon steel strip is arranged around the first rotating roller along a U-shaped path. When two grain-oriented silicon steel strips are being welded, the front conveying mechanism stops working, the first movable seat moves and relaxes the grain-oriented silicon steel strip to form a first conveying allowance, and the middle conveying mechanism continues to work and conveys the first conveying allowance to the normalizing heat treatment mechanism. This keeps the two grain-oriented silicon steel strips fixed during welding and prevents the grain-oriented silicon steel strip from partially stalling when entering the normalizing heat treatment mechanism.

[0015] Preferably, a finishing mechanism is provided between the particle impact descaling mechanism and the winding mechanism. The finishing mechanism includes a cleaning component and a drying component arranged sequentially along the traveling direction of the oriented silicon steel strip. The cleaning component can spray water to remove residual oxide scale on the oriented silicon steel strip, and the drying component can blow hot air onto the cleaned oriented silicon steel strip and dry the surface of the oriented silicon steel strip, so that no scale remains on the surface of the oriented silicon steel strip, ensuring its quality of use.

[0016] Preferably, the traveling speed of the grain-oriented silicon steel at the finishing mechanism is less than that at the winding mechanism; a second strip adjustment mechanism is provided between the finishing mechanism and the winding mechanism. The second strip adjustment mechanism includes a second movable seat and a second rotating roller rotatably disposed on the movable seat. The grain-oriented silicon steel strip is arranged around the second rotating roller along a U-shaped path. The second movable seat moves and loosens the grain-oriented silicon steel strip to form a second conveying allowance for winding onto the winding mechanism; this allows the grain-oriented silicon steel strip sufficient finishing time to ensure that the surface of the grain-oriented silicon steel strip is finished properly.

[0017] Preferably, the brush roller assembly is mounted on a lifting seat, which is driven to rise and fall by a drive assembly. The acid-free descaling equipment also includes a detection module between the brush descaling mechanism and the normalizing heat treatment mechanism. The detection module includes a second controller and a detection component. The detection component includes a mounting base and a telescopic member that is slidably connected to the mounting base in the longitudinal direction. The telescopic member can elastically extend and retract in the longitudinal direction on the mounting base. The telescopic member is used to contact the surface of the strip. The mounting base is also provided with a detection element corresponding to the position of the telescopic member. The detection element can detect the extension and retraction length of the telescopic member. The second controller is electrically connected to the drive assembly and the detection element. After the telescopic member contacts the surface of the strip, it extends and retracts in the longitudinal direction. When the detection element detects that the extension and retraction length of the telescopic member exceeds a predetermined value, it sends a signal to the second controller. The second controller controls the lifting seat and the brush roller to approach the surface of the grain-oriented silicon steel strip through the drive assembly according to the signal, so as to adjust the friction force of the brush roller on the grain-oriented silicon steel strip to the correct position.

[0018] Preferably, the system also includes a support frame with a support platform separated from the ground. The area at the top of the support platform is a high-level installation area, and the area between the lower end of the support platform and the ground forms a low-level installation area. The normalizing heat treatment mechanism is located in the high-level installation area, and the grinding and descaling mechanism is located in the low-level installation area. This saves layout space and improves the structural compactness of the acid-free descaling equipment.

[0019] Preferably, the normalizing heat treatment mechanism includes multiple heat treatment modules arranged in two layers; the multiple heat treatment modules include multiple heating modules and multiple cooling modules arranged in sequence, the multiple heating modules constitute the heating section, the multiple cooling modules constitute the cooling section, and the heating section and the cooling section are connected; thereby further saving layout space.

[0020] The beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0021] This invention involves conveying uncoiled grain-oriented silicon steel sheets and strips through a conveying mechanism and then passing them through a normalizing heat treatment mechanism. The sheets and strips are then moved to a brush descaling mechanism where they undergo physical grinding using multiple brush roller groups. This achieves acid-free descaling of the grain-oriented silicon steel sheets and strips, avoiding the generation of waste liquid and sludge adhering to the surface of the sheets and strips due to acid pickling, thereby improving the efficiency and surface quality of descaling.

[0022] As the grain-oriented silicon steel strip moves along the direction of travel, the brush strips on the rotating brush rollers of the brush roller group become increasingly dense, so that multiple brush roller groups can progressively polish the surface of the grain-oriented silicon steel strip, thereby maximizing the removal of oxide scales on the surface of the grain-oriented silicon steel strip and enabling the surface quality of the grain-oriented silicon steel strip to reach the predetermined standard.

[0023] Grain-oriented silicon steel contains silicon. After normalizing heat treatment, the oxide scale formed on its surface mainly consists of metal oxides and silicon oxides. The brush descaling mechanism can remove most of the metal oxides, but silicon oxides are hard and difficult to remove by rotating brush rollers. Therefore, this invention adopts a particle impact descaling mechanism, which uses high-speed jet impact particles to break up the silicon oxides and prevent them from adhering to the surface of the grain-oriented silicon steel sheet and strip, thus affecting the quality of use.

[0024] By setting a detection module to control the lifting and lowering of the rotating brush roller between the normalizing heat treatment mechanism and the brush descaling mechanism, when the surface roughness of the grain-oriented silicon steel is too large and exceeds the predetermined value, the detection module can control the rotating brush roller to move closer to the grain-oriented silicon steel strip, so that the brush descaling mechanism can increase the brushing force of the rotating brush roller on the surface of the grain-oriented silicon steel strip according to the surface roughness of the grain-oriented silicon steel strip, and ensure the grinding effect of the rotating brush roller.

[0025] Since the normalizing heat treatment mechanism and the brush descaling mechanism occupy a large space, this utility model is equipped with a support platform. The normalizing heat treatment mechanism is installed in the high-level installation area at the top of the support platform, while the brush descaling mechanism is installed in the low-level installation area between the bottom of the support platform and the ground. This makes the structure of the acid-free descaling equipment more compact and saves on layout costs. Attached Figure Description

[0026] Figure 1 A schematic diagram of the layout of an acid-free descaling equipment;

[0027] Figure 2 This is a schematic diagram of the front section of the acid-free descaling equipment;

[0028] Figure 3 This is a schematic diagram of the middle section of an acid-free descaling device;

[0029] Figure 4This is a schematic diagram of the rear section of the acid-free descaling equipment;

[0030] Figure 5 This is a schematic diagram of the detection component and brush roller assembly at the brush descaling mechanism;

[0031] Figure 6 A schematic diagram showing the impact particles being sprayed onto the grain-oriented silicon steel strip to break up silicon oxide;

[0032] Figure 7 This is a schematic diagram showing the welding machine moving along the length of the joint between two grain-oriented silicon steel strips and performing welding.

[0033] Figure 8 A structural cross-sectional view of the inspection component;

[0034] Figure 9 This is a diagram showing the connection structure between the rotating brush roller and the lifting seat.

[0035] Figure 10 This is a schematic diagram of cutting the ends off uncoiled grain-oriented silicon steel strip;

[0036] Figure 11 This is an enlarged view of the connecting components between the upper and lower heat treatment modules;

[0037] Figure 12 A schematic diagram showing the changes in the moving speed of the first moving seat and the speed of the intermediate conveying mechanism when the conveying allowance of the oriented silicon steel strip is less than or equal to the moving stroke of the first moving seat.

[0038] Figure 13 A schematic diagram showing the changes in the moving speed of the first moving seat and the speed of the middle conveying mechanism when the conveying allowance of the oriented silicon steel strip is greater than the active stroke of the first moving seat.

[0039] Figure 14 This is a schematic diagram of a cutting mechanism in which rotating cutting wheels cut the rough edges on both sides of a grain-oriented silicon steel strip.

[0040] Figure 15 Here is a simplified structural diagram of the first plate belt adjustment mechanism;

[0041] The attached figures are labeled as follows: 1-Unwinding mechanism, 2-Front section strip conveyor mechanism, 2a-Middle section strip conveyor mechanism, 2c-Guide roller assembly, 3-Tensioning mechanism, 4-Strip welding mechanism, 5-First strip adjusting mechanism, 5a-Second strip adjusting mechanism, 5b-First moving seat, 5c-First rotating roller, 6-Grinding and descaling mechanism, 6a-Rotating brush roller, 7-Particle impact descaling mechanism, 8-Cleaning mechanism, 9-Rewinding mechanism, 21-Directional roller, 22-Straightening mechanism, 23-Cut-off mechanism, 31-Double roller correction mechanism, 41-Welding machine, 51-Normalizing heat treatment mechanism, 52-Sealing component, 53-Support platform, 54-Sealing pipe, 61-Coarse grinding brush roller 62-Semi-fine grinding brush roller, 63-Fine grinding brush roller, 64-Mounting base, 65-Lifting base, 66-Drive motor, 67-Base, 71-Impact particle, 81-Drying mechanism, 91-Cutting mechanism, 511-Preheating section, 512-Oxygen-free furnace heating section, 513-Radiation tube heating section, 521-First tube cooling section, 522-Equalizing heating section, 523-Second tube cooling section, 524-Mist cooling section, 525-Air cooling section, 526-Water cooling section, 527-Drying section, 231-Moving cutter, 611-Power motor, 641-Telescopic component, 642-Compression spring, 643-Detection element, 661-Lead screw, 662-Lead nut, 911-Rotating cutting wheel. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0044] The specific embodiments of this utility model are as follows:

[0045] like Figure 1-15 As shown in the accompanying drawings, this embodiment provides an acid-free descaling device for grain-oriented silicon steel sheets and strips. For ease of demonstration, the acid-free descaling device is divided into a front section, a middle section, and a rear section in the accompanying drawings. The acid-free descaling device includes the following components arranged sequentially along the traveling direction of the grain-oriented silicon steel sheet and strip:

[0046] Uncoiling mechanism 1 is used to wind oriented silicon steel strips that have not undergone normalization heat treatment; uncoiling mechanism 1 is an existing mechanism, and its specific structure will not be described in detail; a cutting mechanism 23 is provided adjacent to uncoiling mechanism 1, such as... Figure 10As shown, the head-cutting mechanism 23 is equipped with a movable cutter 231. After the grain-oriented silicon steel strip is uncoiled, its head end enters the head-cutting mechanism 23, and the movable cutter 231 cuts off the rough edge of the head end of the grain-oriented silicon steel strip.

[0047] The strip conveyor mechanism is used to transport grain-oriented silicon steel strips. The strip conveyor mechanism is usually a common clamping roller conveyor mechanism, which uses two rotating rollers that are positioned above and below each other to clamp the grain-oriented silicon steel strip.

[0048] The normalizing heat treatment mechanism 51 includes a heating section and a cooling section arranged sequentially along the traveling direction of the grain-oriented silicon steel strip; the heating section and the cooling section are connected.

[0049] The brush descaling mechanism 6 includes multiple brush roller assemblies arranged sequentially along the traveling direction of the grain-oriented silicon steel strip. Each brush roller assembly includes two rotating brush rollers 6a that are opposite each other. The rotating brush rollers 6a rotate to brush off the oxide scale that adheres to the surface of the grain-oriented silicon steel strip after normalizing heat treatment.

[0050] The winding mechanism 9 is used to wind and collect the descaled oriented silicon steel strip. The winding mechanism 9 is equipped with a winding roller, which rotates after being fixed to the end of the oriented silicon steel strip, so that the oriented silicon steel strip is wound into a steel coil after descaling.

[0051] Furthermore, such as Figure 5 , Figure 9 As shown, the roller shaft of the rotating brush roller 6a is connected to a power motor 611. Driven by the power motor 611, the rotating brush roller 6a rotates along its own axis, removing oxide scales from the surface of the oriented silicon steel strip while conforming to its movement. The rotating brush roller 6a includes a roller body and brush strips densely arranged outside the roller body. Along the direction of travel of the oriented silicon steel strip, the brush strip density on the rotating brush roller 6a in the subsequent brush roller assembly is greater than that in the previous brush roller assembly. The number of brush roller groups can be adjusted according to the polishing effect. In this embodiment, three brush roller groups are used for explanation. The rotating brush rollers 6a in the three brush roller groups... Along the travel direction of the grain-oriented silicon steel strip, it can be sequentially divided into a coarse grinding brush roller 61, a semi-fine grinding brush roller 62, and a fine grinding brush roller 63. When the grain-oriented silicon steel strip travels to the coarse grinding brush roller 61, the coarse grinding brush roller 61 grinds away the loose metal oxide scales. When it continues to travel to the semi-fine grinding brush roller 62, the brush strips on the semi-fine grinding brush roller 62 are more dense, which can remove the remaining relatively dense metal oxide scales. Then, when it travels to the fine grinding brush roller 63, the brush strips on the fine grinding brush roller 63 are even denser, which can remove the remaining metal oxide scales. This design allows multiple brush roller groups to form a progressive grinding on the surface of the grain-oriented silicon steel strip, ensuring the descaling effect.

[0052] Furthermore, grain-oriented silicon steel contains silicon. After normalizing heat treatment, the oxide scale formed on its surface mainly consists of metal oxides and silicon oxides. The brush descaling mechanism can remove most of the metal oxides, but the silicon oxides are too hard and difficult to remove by the rotating brush rollers. Therefore, a particle impact descaling mechanism 7 is provided between the brush descaling mechanism 6 and the winding mechanism 9. This particle impact descaling mechanism is also called a shot blasting machine. Figure 6 As shown, it can spray dense impact particles 71 inside, which are creatively used in this embodiment for descaling to break and remove silica deposits on the surface of the oriented silicon steel strip; to prevent silica deposits that are difficult to remove by the inner brush roller from remaining on the surface of the oriented silicon steel strip.

[0053] Furthermore, such as Figure 2 As shown, if a single winding mechanism is used, when all the oriented silicon steel strips on the winding mechanism 1 have been descaled, the next unnormalized heat-treated oriented silicon steel strip needs to be installed on the winding mechanism 1. During this process, the acid-free descaling equipment needs to be stopped. Therefore, in this embodiment, there are multiple unwinding mechanisms 1. To save downtime, a strip welding mechanism 4 is provided between the multiple unwinding mechanisms 1 and the normalized heat treatment mechanism 51. The strip welding mechanism 4 is an argon arc welding mechanism, such as... Figure 7 As shown, the strip welding mechanism 4 is equipped with a movable welding machine 41; when the tail end of the previous oriented silicon steel strip enters the strip welding mechanism 4, the head end of the next oriented silicon steel strip simultaneously enters the strip welding mechanism 4, so that the welding machine 41 can move and weld the two oriented silicon steel strips together; the placement process of the oriented silicon steel strip is eliminated, the downtime of the acid-free descaling equipment is avoided, and the strips on multiple uncoiling mechanisms 1 are finally collected into one roll, improving the descaling efficiency.

[0054] Furthermore, the strip conveying mechanism includes a front conveying mechanism 2 located between each uncoiling mechanism 1 and the strip welding mechanism 4, and a middle conveying mechanism 2a located between the strip welding mechanism 4 and the normalizing heat treatment mechanism 51. Both mechanisms are of the pinch roller type, comprising two rotating pinch rollers. The rear section primarily relies on the winding action of the winding mechanism 9 to pull the grain-oriented silicon steel strip forward. A guide roller assembly 2c is also located near the winding mechanism 9. The guide roller assembly 2c comprises two vertically arranged rotating guide rollers, which serve to guide the direction and prevent the strip from shifting vertically. A first strip adjusting mechanism 5 is provided between the strip welding mechanism 4 and the middle conveying mechanism 2a. Figure 15As shown, the first strip adjustment mechanism 5 includes a first movable seat 5b and a first rotating roller 5c rotatably mounted on the movable seat. The oriented silicon steel strip is arranged around the first rotating roller 5c along a U-shaped path. When two oriented silicon steel strips are welded, the front conveying mechanism 2 stops working, the first movable seat 5b moves and relaxes the oriented silicon steel strip to form a first conveying allowance, and the middle conveying mechanism 2a continues to work and conveys the first conveying allowance to the normalizing heat treatment mechanism 51. This keeps the two oriented silicon steel strips fixed during welding, while preventing the oriented silicon steel strip from stopping in the normalizing heat treatment mechanism and preventing the middle strip conveying mechanism 2a from pulling on the welded strip.

[0055] Furthermore, when two grain-oriented silicon steel strips are welded, the weld seam mainly extends along the width direction of the grain-oriented silicon steel strips. When the width specification of the grain-oriented silicon steel strips to be descaled changes, the length of the first strip conveying allowance will also change. Under the premise that the moving speed of the welding machine 41 remains unchanged, the wider grain-oriented silicon steel strips require a longer welding time. Therefore, in order to adapt to the change in the first strip conveying allowance caused by the change in the width of the grain-oriented silicon steel strips, the acid-free descaling equipment also includes a first controller (not shown) that controls the conveying speed of the intermediate conveying mechanism 2a and the moving speed of the first moving seat 5b, as well as an image capture module (not shown) set in the strip welding module 4. The image capture module is an industrial camera with image capture and analysis functions. In this embodiment, the speed of the first strip adjustment mechanism 5 and the intermediate conveying mechanism 2a is adjusted according to the following steps to adapt to the corresponding first strip conveying allowance: First, the image capture module is used to obtain the distance between the two grain-oriented silicon steel strips to be welded. The system obtains a seam image and measures the seam length based on the seam image, then feeds the seam length value back to the first controller. The first controller then determines the welding time for the two oriented silicon steel strips based on the seam length value and the operating speed of the welding machine 41 within the welding equipment. After obtaining the welding time, the first controller adjusts the moving speed of the first strip adjustment module 5 or the conveying speed of the intermediate conveying mechanism 2a based on the welding time, so that when the first strip adjustment module 5 moves along a predetermined direction within its moving stroke, the resulting first strip conveying allowance is conveyed to the normalizing heat treatment module 51 via the intermediate conveying mechanism 2a. The first controller adjusts the moving speed of the first strip adjustment module 5 by electrically connecting the first controller to the electrical drive component (which can be an electrically controlled motor) that drives the first moving seat 5b. The first controller also adjusts the conveying speed of the intermediate conveying mechanism 2a by electrically connecting to the electrical drive component (which can be an electrically controlled motor) that drives the rotation of the clamping rollers.

[0056] The speed adjustment process will be described in detail below: Figure 12-13As shown, for example, the conveying speed of the plate and strip of the middle section conveying mechanism 2a is set to V1; the maximum travel value of the first moving seat 5b is set to A, and A is pre-stored in the first controller; when the width of the oriented silicon steel plate and strip changes and the welding length changes, the length of the welding time determines the speed adjustment process. First, the first controller calculates the required allowance value C of the plate and strip within the welding time, C=V1*t, where t is the welding time of the two oriented silicon steel plate and strips; then, the parameters are compared and the relationship between C / 2 and A is determined, where C / 2 is the moving distance of the first moving seat 5b; the comparison between C / 2 and A is because the oriented silicon steel plate and strip wraps around the first rotating roller 5c in a U-shape. Therefore, when the first moving seat 5b moves a certain distance and relaxes the oriented silicon steel plate and strip, the plate and strip portions at both ends of the first rotating roller 5c will be relaxed. Therefore, the first conveying allowance of the oriented silicon steel plate and strip is twice the moving distance of the first moving seat 5b.

[0057] If C / 2≤A, it means that the moving distance of the first moving seat 5b will not exceed its maximum stroke within the welding time t. At this time, the moving speed value of the first plate belt adjustment module 5 is adjusted to V, V=V1 / 2; to ensure that when the first moving seat 5b moves a distance of V1*t / 2, a first plate belt conveying margin of length V1*t is formed.

[0058] If C / 2 > A, it means that the moving distance of the first moving seat 5b exceeds its maximum stroke within the welding time t. At this time, the conveying speed of the middle conveying mechanism 2a is reduced to V2, and it is ensured that V2*t / 2≤A to avoid the first moving seat 5b exceeding the maximum stroke A within the corresponding welding time t. At the same time, the moving speed of the first plate belt adjustment module 5 is adjusted to V, V=V2 / 2, so as to form a first plate belt conveying margin of length V2*t.

[0059] Furthermore, when the welding of two grain-oriented silicon steel strips is completed, the first strip adjustment module 5 resets to facilitate the re-movement of the next two grain-oriented silicon steel strips of the next width specification during welding. At this time, the front conveyor mechanism 2 enters the working state from the stopped state. Similarly, according to different welding times t, the speed of the first strip conveyor mechanism 5 and the front conveyor mechanism 2 needs to be adjusted. If C / 2≤A, the first controller adjusts the conveying speed of the front conveyor mechanism 2 to V3, where V3>V1. The conveying speed of the middle conveyor mechanism 2a remains at V1 to ensure that there is a conveying speed difference between the front conveyor mechanism 2 and the middle conveyor mechanism 2a. At the same time, the first strip adjustment module 5 moves in the opposite direction at a speed of V4 back to the initial position. When the first belt adjustment module 5 returns to its initial position, V4 = V3 - V1 / 2. The conveying speed of the front conveyor mechanism 2 decreases from V3 to V1, thus achieving the same conveying speed as the middle conveyor mechanism 2a. Similarly, if C / 2 > A, the first controller adjusts the conveying speed of the front conveyor mechanism 2 to V1, while the conveying speed of the middle conveyor mechanism 2a remains at V2. Simultaneously, the first belt adjustment module 5 moves in the opposite direction to its initial position at a speed of V5, where V5 = V1 - V2 / 2. When the first belt adjustment module 5 returns to its initial position, the conveying speed of the middle conveyor mechanism 2a increases from V2 to V1, thus achieving the same conveying speed as the middle conveyor mechanism 2a.

[0060] Furthermore, a finishing mechanism is provided between the particle impact descaling mechanism 7 and the winding mechanism 9. The finishing mechanism includes a cleaning component 8 and a drying component 81 arranged sequentially along the traveling direction of the oriented silicon steel strip. The cleaning component 8 is a water jet machine that can spray water to remove residual oxide scales on the oriented silicon steel strip. The water jet machine is also equipped with a continuously rotating brush roller (not shown). The outer wall of the brush roller has dense cleaning bristles to clean residual oxide scales on the surface of the oriented silicon steel strip. The drying component 81 is a hot air dryer that can blow hot air onto the cleaned oriented silicon steel strip and dry the surface of the oriented silicon steel strip, so that no scales remain on the surface of the oriented silicon steel strip, ensuring its quality of use.

[0061] Furthermore, to ensure that the grain-oriented silicon steel strip is properly finished after descaling and to prevent impurities or dirt from adhering to its surface, the traveling speed of the grain-oriented silicon steel at the finishing mechanism is less than that at the winding mechanism 9, thus providing sufficient time for the grain-oriented silicon steel strip to be finished. To achieve this speed difference, a second strip adjustment mechanism 5a is provided between the finishing mechanism and the winding mechanism 9. The second strip adjustment mechanism 5a has a similar structure to the first strip adjustment mechanism 5. The second strip adjustment mechanism 5a includes a second movable seat and a second rotating roller rotatably mounted on the movable seat. The grain-oriented silicon steel strip is wound around the second rotating roller along a U-shaped path. The second movable seat moves and loosens the grain-oriented silicon steel strip to form a second conveying allowance for winding onto the winding mechanism 9, thus providing sufficient finishing time for the grain-oriented silicon steel strip to ensure that its surface is properly finished.

[0062] Furthermore, the surface of grain-oriented silicon steel strips after normalizing heat treatment has high and uneven surface roughness due to the presence of oxide scales. When the roughness is too large and exceeds a predetermined value, rotating the brush roller 6a becomes insufficient to completely remove the oxide scales. Therefore, to improve the brushing effect, such as... Figure 8 As shown, in this embodiment, the brush roller assembly is mounted on a lifting seat 65, which is driven to rise and fall by a drive assembly. The acid-free descaling equipment also includes a detection module between the brush descaling mechanism 6 and the normalizing heat treatment mechanism 51. The detection module includes a second controller (not shown) and a detection component. The detection component can be positioned above or below the grain-oriented silicon steel strip. The detection component includes a mounting base 64 and a telescopic member 641 that is slidably connected to the mounting base 64 in the longitudinal direction. The telescopic member 641 can elastically extend and retract in the longitudinal direction on the mounting base 64. The telescopic member 641 is used to contact the surface of the strip. The mounting base 64 is also provided with... There is a detection element 643 corresponding to the position of the telescopic member 641. The detection element 643 is an infrared sensor. The detection element 643 can detect the telescopic length of the telescopic member 641. The second controller is electrically connected to the drive assembly and the detection element 643. After the telescopic member 641 contacts the surface of the strip, it extends and retracts longitudinally. When the detection element 643 detects that the telescopic length of the telescopic member 641 exceeds a predetermined value, it sends a signal to the second controller. The second controller controls the lifting seat 65 and the brush roller to approach the surface of the oriented silicon steel strip through the drive assembly according to the signal, so as to adjust the friction force of the brush roller on the oriented silicon steel strip to the correct position.

[0063] Furthermore, the mounting base 64 is provided with an elastic element, which acts on the telescopic member 641, causing the telescopic member 641 to elastically extend and retract longitudinally on the mounting base 64. To save layout space, the mounting base 64 is a sleeve, the telescopic member 641 is a telescopic rod slidably connected in the sleeve, and the elastic element is a compression spring 642 set in the sleeve.

[0064] Furthermore, the detection element 643 is configured as follows: a receiving groove is provided on the inner wall of the sleeve corresponding to the position of the telescopic member 641, the detection element is located in the receiving groove, and at the same time, in order to facilitate the installation of electrical wires, the receiving groove is provided with an outward through-hole to avoid the electrical wires.

[0065] Furthermore, the electrical connection between the second controller and the drive assembly means that the drive assembly includes a drive motor 66 and a lead screw 661, with the drive motor 66 mounted on a base 67; the second controller is electrically connected to the drive motor 66; a lead screw nut 662 is provided on the lifting seat 65, and the lead screw 661 is screwed into the lead screw nut 662; the drive motor 66 can drive the lead screw 661 to rotate, so as to control the lifting seat 65 and the brush roller 6a to approach the belt.

[0066] Furthermore, the telescopic length of the telescopic component 641 is directly proportional to the surface roughness of the oriented silicon steel sheet and strip. That is, the rougher the surface of the oriented silicon steel sheet and strip, the greater the telescopic length generated after the telescopic component 641 is released. Considering the range of surface roughness variation of the oriented silicon steel sheet and strip, the telescopic length range of the telescopic component 641 in this embodiment is limited to 1mm-3mm.

[0067] Furthermore, the longitudinal movement range of the lifting seat 65 and the rotating brush roller 6a needs to be within a reasonable range. If the range of movement is too small, the rotating brush roller 6a may not make proper contact with the surface of the oriented silicon steel strip. If the range of movement is too large, the rotating brush roller 6a will descend excessively and make too close contact with the surface of the oriented silicon steel strip. This will not only make the rotating brush roller 6a rotate poorly, but also affect the grinding effect. Therefore, the longitudinal movement range of the lifting seat 65 and the rotating brush roller 6a is 5mm-30mm.

[0068] Furthermore, the normalizing heat treatment mechanism 51 and the brush descaling mechanism 6 occupy a large space. If laid out in a conventional assembly line manner, they would take up a lot of space in the processing workshop. Therefore, to save space, the acid-free descaling equipment also includes a support frame, which is fixed to the ground by multiple legs. The support frame has a support platform 53 that is separated from the ground. The top area of ​​the support platform 53 is a high-level installation area, and the lower end of the support platform 53 forms a low-level installation area between it and the ground. The normalizing heat treatment mechanism 51 is located in the high-level installation area, and the brush descaling mechanism 6 is located in the low-level installation area. The oriented silicon steel strip can first move upward and enter the normalizing heat treatment mechanism 51 to complete the normalizing heat treatment, and then bend downward to enter the brush descaling mechanism 6 for physical grinding and descaling, thereby saving layout space and improving the structural compactness of the acid-free descaling equipment.

[0069] Furthermore, to further save space, the normalizing heat treatment mechanism 51 includes multiple heat treatment modules arranged in two layers, both of which can be referred to as heat treatment layers. Each heat treatment module includes multiple heating modules and multiple cooling modules arranged sequentially. The heating modules constitute the heating section, and the cooling modules constitute the cooling section, which are connected. Between the upper and lower heat treatment layers, the heating section includes a preheating section 511, an oxygen-free furnace heating section 512, and a radiant tube heating section 513 arranged sequentially along the direction of travel of the oriented silicon steel strip. When the oriented silicon steel strip passes through the preheating section 511, it is heated to approximately 400°C within 40 seconds. Afterward, it proceeds sequentially to the oxygen-free furnace heating section 512 and the radiant tube heating section 513, where it is heated to approximately 1200°C within 70 seconds, completing the heating process. The cooling section includes a first pipe cooling section 521, a soaking section 522, a second pipe cooling section 523, a mist cooling section 524, an air cooling section 525, and a water cooling section 526 arranged sequentially along the direction of travel of the grain-oriented silicon steel strip. After passing through the water cooling section 526, a drying section 527 is also provided to dry the moisture on the surface of the grain-oriented silicon steel. When the grain-oriented silicon steel strip passes through the first pipe cooling section 521, the temperature drops to about 900°C within 40 seconds. When it passes through the soaking section 522, the temperature is maintained at 900°C for about 5 seconds. Then it passes through the second pipe cooling section 523, the mist cooling section 524, the air cooling section 525, and the water cooling section 526 in sequence, and the temperature drops to about 100°C within 140 seconds. Finally, it enters the drying section 572 to evaporate the moisture. In the heating or cooling section, adjacent heat treatment sections are sealed and connected by a sealed pipe 54 to ensure that the heat treatment temperature is normal.

[0070] Furthermore, each heat treatment module includes a heat treatment furnace body. During installation, to ensure that the upper and lower heat treatment modules remain relatively fixed, such as... Figure 11 As shown, multiple connecting components 54 are provided between two adjacent heat treatment furnace bodies. The connecting component 54 includes a positioning rod 542 provided in the lower heat treatment furnace body. The positioning rod 542 has a threaded section, and a support nut 543 is threadedly connected to the threaded section. The upper heat treatment furnace body has a positioning hole that matches the positioning rod 542. The positioning rod 542 passes through the positioning hole, and the support nut 543 contacts the upper heat treatment furnace body and provides support for it. At the same time, the support nut 543 can be rotated during installation, and the height position of multiple support nuts 543 can be adjusted to facilitate the installation of multiple heat treatment modules in the upper layer. The top of the support platform 53 and the lower heat treatment module are also installed and positioned using the connecting components 54. The positioning rod 542 is provided in the top of the support platform 53, and the positioning hole is provided in the lower end of the lower heat treatment furnace body.

[0071] Furthermore, to prevent the heat treatment furnace body from moving upwards, the upper heat treatment furnace body is fixed with a connecting seat 541, and a positioning hole is longitudinally provided on the connecting seat 541. The supporting nut 543 is supported at the lower end of the connecting seat 541. The threaded section of the positioning rod 542 extends upwards through the positioning hole, and the top of the threaded section is connected to a locking nut 544 that presses the connecting seat 541. The locking nut 542 and the supporting nut 543 respectively restrict the upward and downward degrees of freedom of the heat treatment furnace body, so that the entire normalizing heat treatment mechanism 51 is stably set in the high-level installation area.

[0072] Furthermore, the acid-free descaling equipment is also equipped with multiple steering mechanisms. The steering mechanism includes a support (not shown) and a steering roller 21 rotatably connected to the support. The steering roller 21 mainly serves as a guide, so that the oriented silicon steel strip is conveyed to the corresponding mechanism in a predetermined direction. In this embodiment, the steering roller 21 is mainly arranged between the first strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51, between the normalizing heat treatment mechanism 51 and the brush descaling mechanism 6, between the first strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51, and between the second strip adjustment mechanism 5a and the winding mechanism 9.

[0073] Furthermore, there are at least two steering rollers 21 between the first strip adjustment mechanism 5 and the normalizing heat treatment mechanism 51. The oriented silicon steel strip is arranged in a wave-like path between the at least two steering rollers 21 and the first rotating roller 5c. The oriented silicon steel strip is arranged in a U-shaped trajectory around the first rotating roller 5c. After the first moving seat 5b moves, the resulting first strip conveying margin is twice that of the first moving seat 5b.

[0074] Furthermore, in the normalizing heat treatment mechanism 51, multiple heating modules are located on the upper layer, the first tube cold section 521 is also located on the upper layer, and the remaining cooling modules are located on the lower layer. Between the two heat treatment layers, between the two adjacent heat treatment modules at the turning position of the oriented silicon steel strip, that is, between the first tube cold section 521 and the soaking section 522, a guide roller 21 is also provided to guide the oriented silicon steel strip to turn, so that the oriented silicon steel strip is guided from the upper layer to the lower layer. The first tube cold section 521 and the soaking section 522 are sealed and connected by a sealing element 521. The sealing element 521 is a cover structure, and the guide roller 21 is hidden inside the sealing element 521 to avoid affecting the temperature environment in the heat treatment module when guiding the oriented silicon steel strip.

[0075] Furthermore, the acid-free descaling equipment also includes multiple straightening mechanisms 22 to prevent the strip from bending and deforming. The straightening mechanism 22 has two rows of rotating straightening rollers, and a straightening space is formed between the two rows of straightening rollers to allow the grain-oriented silicon steel strip to pass through. The straightening mechanism 22 is mainly set between the uncoiling mechanism 1 and the strip welding mechanism 4, in the low-position installation area, and between the normalizing heat treatment mechanism 51 and the brush descaling mechanism 6. The straightening mechanism 22 between the uncoiling mechanism 1 and the strip welding mechanism 4 is mainly used to straighten the grain-oriented silicon steel strip to be treated after uncoiling to avoid deformation in subsequent processes. Considering that the grain-oriented silicon steel strip will inevitably undergo slight deformation after normalizing heat treatment 51, a straightening mechanism 22 is also set between the normalizing heat treatment mechanism 51 and the brush descaling mechanism 6 to straighten the grain-oriented silicon steel strip again.

[0076] Furthermore, the grain-oriented silicon steel strip needs to be kept taut during its movement to facilitate transport. Therefore, in this embodiment, the acid-free descaling equipment also includes multiple tensioning mechanisms 3. Each tensioning mechanism 3 includes two tensioning wheels for surrounding the strip. One of the tensioning wheels can be moved to change the distance between the two tensioning wheels to adjust the tension of the grain-oriented silicon steel strip. The corresponding tensioning mechanism 3 is set between the strip welding mechanism 4 and the first strip adjusting mechanism 5 to keep the welded grain-oriented silicon steel strip taut. The tensioning mechanism 3 is also set between the normalizing heat treatment mechanism 51 and the first strip adjusting mechanism 5, and between the normalizing heat treatment mechanism 51 and the first strip adjusting mechanism 5, to ensure the tension of the grain-oriented silicon steel strip before and after normalizing heat treatment. A tensioning mechanism 3 is also set between the winding mechanism 9 and the finishing mechanism.

[0077] Furthermore, in order to prevent the grain-oriented silicon steel strip from deviating from its direction during travel, a double-roller correction mechanism 31 is provided between the strip welding mechanism 4 and the first strip adjustment mechanism 5, and between the second strip adjustment mechanism 5a and the cutting mechanism 91. The double-roller correction mechanism 31 includes at least two rotating conveying rollers (not shown) arranged along the conveying direction. One of the rotating conveying rollers can deflect and forms an angle with the other conveying roller to generate a frictional force in the width direction on the grain-oriented silicon steel strip, so as to adjust the direction of travel of the grain-oriented silicon steel strip.

[0078] Furthermore, after normalizing heat treatment, grinding and descaling, and finishing, the two sides of the grain-oriented silicon steel strip in the width direction will undergo slight deformation. Therefore, a cutting mechanism 91 is also provided between the finishing mechanism and the coiling mechanism 9. Figure 14 As shown, the cutting mechanism 91 is symmetrically provided with two rotating cutting wheels 911 corresponding to the inner positions of the oriented silicon steel strip. When the rotating cutting wheels 911 rotate, they can cut off the rough edges on both sides of the oriented silicon steel strip.

[0079] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An acid-free descaling device for grain-oriented silicon steel sheets and strips, characterized in that, Including those arranged sequentially along the direction of travel of the grain-oriented silicon steel strip: Uncoiling mechanism (1) is used to wind oriented silicon steel strips that have not undergone normalization heat treatment; A strip conveyor mechanism is used to transport grain-oriented silicon steel strips. The normalizing heat treatment mechanism (51) includes a heating section and a cooling section arranged sequentially along the traveling direction of the grain-oriented silicon steel strip; The brush descaling mechanism (6) includes multiple brush roller assemblies arranged sequentially along the traveling direction of the grain-oriented silicon steel strip. Each brush roller assembly includes two rotating brush rollers (6a) that are opposite each other. The rotating brush rollers (6a) rotate to brush the oxide scale that adheres to the surface of the grain-oriented silicon steel strip after normalizing heat treatment. The winding mechanism (9) is used to wind and collect the descaled oriented silicon steel strip.

2. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 1, characterized in that: The rotating brush roller (6a) includes a roller body and brush strips densely arranged outside the rotating brush roller body; along the direction of travel of the oriented silicon steel strip, the brush strip density on the rotating brush roller (6a) in the subsequent brush roller assembly is greater than the brush strip density on the rotating brush roller (6a) in the previous brush roller assembly.

3. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 1, characterized in that: A particle impact descaling mechanism (7) is provided between the brush descaling mechanism (6) and the winding mechanism (9). The particle impact descaling mechanism (7) can spray dense impact particles (71) inside to break and remove the silicon oxide deposits on the surface of the oriented silicon steel strip.

4. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 1, characterized in that: There are multiple uncoiling mechanisms (1), and a strip welding mechanism (4) is provided between the multiple uncoiling mechanisms (1) and the normalizing heat treatment mechanism (51). A movable welding machine (41) is provided in the strip welding mechanism (4). When the tail end of the previous oriented silicon steel strip enters the strip welding mechanism (4), the head end of the next oriented silicon steel strip enters the strip welding mechanism (4) simultaneously, so that the welding machine (41) can move and weld the two oriented silicon steel strips together.

5. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 4, characterized in that: The strip conveying mechanism includes a front conveying mechanism (2) disposed between each uncoiling mechanism (1) and strip welding mechanism (4), and a middle conveying mechanism (2a) disposed between strip welding mechanism (4) and normalizing heat treatment mechanism (51). The strip welding mechanism (4) and the middle conveying mechanism (2a) are provided with a first strip adjusting mechanism (5). The first strip adjusting mechanism (5) includes a first movable seat (5b) and a first rotating roller (5c) rotatably disposed on the movable seat. The oriented silicon steel strip is arranged around the first rotating roller (5c) along a U-shaped path. When two oriented silicon steel strips are welded, the front conveying mechanism (2) stops working, the first movable seat (5b) moves and relaxes the oriented silicon steel strip to form a first conveying allowance, and the middle conveying mechanism (2a) continues to work and conveys the first conveying allowance to the normalizing heat treatment mechanism (51).

6. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 3, characterized in that: A finishing mechanism is provided between the particle impact descaling mechanism (7) and the winding mechanism (9). The finishing mechanism includes a cleaning component (8) and a drying component (81) arranged sequentially along the direction of travel of the oriented silicon steel strip. The cleaning component (8) can spray water to remove residual oxide scales on the oriented silicon steel strip. The drying component (81) can blow hot air onto the cleaned oriented silicon steel strip and dry the surface of the oriented silicon steel strip.

7. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 6, characterized in that: The travel speed of the oriented silicon steel at the finishing mechanism is less than that at the winding mechanism (9); a second strip adjustment mechanism (5a) is provided between the finishing mechanism and the winding mechanism (9). The second strip adjustment mechanism (5a) includes a second movable seat and a second rotating roller rotatably disposed on the movable seat. The oriented silicon steel strip is arranged around the second rotating roller along a U-shaped path. The second movable seat moves and loosens the oriented silicon steel strip to form a second conveying allowance wound onto the winding mechanism (9).

8. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 1, characterized in that: The brush roller assembly is mounted on a lifting seat (65), which is driven to rise and fall by a drive assembly. The acid-free descaling equipment also includes a detection module between the brush descaling mechanism (6) and the normalizing heat treatment mechanism (51). The detection module includes a second controller and a detection component. The detection component includes a mounting base (64) and a telescopic member (641) that is slidably connected to the mounting base (64) in the longitudinal direction. The telescopic member (641) can elastically extend and retract in the longitudinal direction on the mounting base (64). The telescopic member (641) is used to contact the surface of the strip. The mounting base (64) is also provided with a detection element (643) corresponding to the position of the telescopic member (641). The detection element (643) can detect the extension and retraction length of the telescopic member (641). The second controller is electrically connected to the drive assembly and the detection element (643); after the telescopic member (641) contacts the surface of the strip, it extends and retracts longitudinally. When the detection element (643) detects that the extension length of the telescopic member (641) exceeds a predetermined value, it sends a signal to the second controller. The second controller controls the lifting seat (65) and the brush roller to approach the surface of the oriented silicon steel strip through the drive assembly according to the signal, so as to adjust the friction force of the brush roller on the oriented silicon steel strip to the correct position.

9. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 1, characterized in that: It also includes a support frame with a support platform (53) that is separated from the ground. The area at the top of the support platform (53) is a high-level installation area, and a low-level installation area is formed between the lower end of the support platform (53) and the ground. The normalizing heat treatment mechanism (51) is located in the high-level installation area, and the brush descaling mechanism (6) is located in the low-level installation area.

10. The acid-free descaling equipment for grain-oriented silicon steel sheets and strips according to claim 9, characterized in that: The normalizing heat treatment mechanism (51) includes multiple heat treatment modules, which are arranged in two layers. The multiple heat treatment modules include multiple heating modules and multiple cooling modules arranged in sequence. The multiple heating modules constitute the heating section and the multiple cooling modules constitute the cooling section. The heating section and the cooling section are connected.

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