A silicon steel secondary annealing process and device

Abstract

The present invention discloses a silicon steel secondary annealing process, specifically relates to the field of silicon steel bell-type furnaces, including a bell-type furnace body, a base is fixedly installed at the bottom of the bell-type furnace body, a steel coil workpiece is arranged on the top of the base, a heat pressure control mechanism is installed on the inner wall of the bell-type furnace body, a gas push mechanism is installed on the top of the heat pressure control mechanism, the heat pressure control mechanism includes a reduction motor fixedly installed at the bottom of the base, a bottom plate is fixedly installed on the top of the reduction motor, and the cross-sectional area of ​​the bottom plate is larger than the cross-sectional area of ​​the steel coil workpiece. The present invention controls the heat generated by the heating component on the inner wall of the bell-type furnace by rotating the steel coil workpiece body and pressing down, so that the hot gas generated by the heating component is evenly controlled at various places on the outer surface of the steel coil workpiece, so that the upper and lower parts of the steel coil workpiece are evenly heated, thereby avoiding the occurrence of differences in the reaction effect of the steel coil workpiece due to the influence of the heating rate of the steel coil workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of silicon steel bell-type furnaces, and more specifically, to a silicon steel secondary annealing process and device. Background Art

[0002] Silicon alloy steel with a silicon content of 1.0-4.5% and a carbon content of less than 0.08% is called silicon steel. It has the characteristics of high magnetic permeability, low coercive force, and large resistivity, so the hysteresis loss and eddy current loss are small. It is mainly used as a magnetic material in motors, transformers, electrical appliances, and electrical instruments. In order to meet the needs of punching and shearing when manufacturing electrical appliances, a certain degree of plasticity is also required. In order to improve the magnetic induction performance and reduce the hysteresis loss, the content of harmful impurities is required to be as low as possible, and the plate shape is required to be flat and the surface quality is good.

[0003] The existing bell-type furnace used for secondary annealing of silicon steel heats up by generating heat through a heating component arranged on its inner wall. During use, the heating component directly generates heat on the inner wall of the bell-type furnace, which causes the hot gas to rise directly upward, which in turn causes the temperature in the bell-type furnace to be higher at the top and lower at the bottom, which in turn causes the steel coil workpiece in the bell-type furnace to be heated unevenly from top to bottom, and the heating rate will also be uneven, which will cause differences in the reaction effects of the steel coil workpiece, thereby affecting the quality of the steel coil workpiece. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a silicon steel secondary annealing process and device, which provides a heat pressure control mechanism, and then controls the downward pressure of the heat generated by the heating component on the inner wall of the hood furnace by rotating the steel coil workpiece body, so that the hot gas generated by the heating component is evenly controlled at various locations on the outer surface of the steel coil workpiece, so that the upper and lower parts of the steel coil workpiece are heated evenly, thereby avoiding the occurrence of differences in the reaction effects of the steel coil workpiece due to the influence of the heating rate of the steel coil workpiece, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a silicon steel secondary annealing process, comprising the following steps:

[0006] S1: Place the MgO-coated steel coil on the base and cover it with a bell-type furnace body, then heat it up through the heating component (Mg(OH)2 in MgO decomposes to release chemical water at 350-450℃) and mix the protective gas, and then keep it warm for 30 / h;

[0007] S2: Then slowly heat up the temperature through the heating assembly (12-17℃ / h to 850-1050℃, (GO and Hi-B steel mainly composed of MNS), and the steel coil forms a single {110} <001> Texture;

[0008] S3: The temperature is further raised to 1000-1100°C by the heating component, and MgO reacts chemically with SiO2 in the surface oxide film to form a Mg2SiO4 (magnesium silicate or fayalite) glass film bottom layer. At this time, dp is controlled to be less than or equal to -7°C, preferably less than or equal to -15°C (GO steel) or -10-+30°C (Hi-B steel mainly composed of AIN);

[0009] S4: Continue to heat up to 1190±20℃ by heating the assembly, replace with pure H2 with dp=-60℃ and O2 less than 1ppmd, perform purification annealing, and keep warm for 30 / h. The dp of the discharged hydrogen is less than or equal to -10℃, preferably less than or equal to -20℃;

[0010] S5: Then, naturally cool down by power outage and replace 3H2+N2 (to 700°C);

[0011] S6: Finally, replace N2 and cool down to 320°C before taking out of the furnace.

[0012] The present invention further provides a silicon steel secondary annealing device, which includes a bell-type furnace body, a base is fixedly installed at the bottom of the bell-type furnace body, a steel coil workpiece is arranged on the top of the base, a heat pressure control mechanism is installed on the inner wall of the bell-type furnace body, and an air push mechanism is installed on the top of the heat pressure control mechanism;

[0013] The heat pressure control mechanism comprises a reduction motor fixedly mounted on the bottom of the base, a bottom plate fixedly mounted on the top of the reduction motor, the cross-sectional area of ​​the bottom plate is larger than the cross-sectional area of ​​the steel coil workpiece, and the top of the bottom plate and the bottom of the steel coil workpiece are in contact with each other;

[0014] A plurality of rotating rods are rotatably mounted on the top of the bottom plate, and the plurality of rotating rods are arranged in an annular manner with equal spacing around the outer circumferential surface of the bottom plate;

[0015] A fan plate is fixedly installed on one side of the rotating rod, a coil spring is fixedly installed on the bottom of the rotating rod, and the coil spring is fixedly installed on the inner wall of the bottom plate. The height of the fan plate is the same as the height of the steel coil workpiece, and a distance is left between the fan plate and the steel coil workpiece;

[0016] A plurality of gas storage plates are hingedly connected to one side of the fan plate, a top block is provided at the bottom of the plurality of gas storage plates, a limiting rod is fixedly installed on one side of the top block, and the limiting rod is fixedly installed on the top of the bell-type furnace body;

[0017] The plurality of air storage plates are arranged in an inclined manner with one side of the fan plate as a plane, and the bottom of the air storage plate is fitted with the top of the top block.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The heat generated by the heating component diffuses downward through the ventilation groove, and the reduction motor drives the bottom plate to slowly rotate counterclockwise so that the steel coil workpiece is evenly exposed to the hot air; at the same time, the diffused hot air is temporarily stored by the air pressure plate and shot downward, so that the steel coil workpiece is contacted in a first-down-then-up manner, so that the upper and lower parts of the steel coil workpiece are heated evenly, thereby avoiding the difference in the reaction effect of the steel coil workpiece caused by the heating rate of the steel coil workpiece.

[0020] 2. The bottom plate rotates to drive the rotating rod close to the lever and squeeze it to make it rotate, so that the lever drives the threaded rod to quickly move the air compression plate downward, thereby pressing most of the air flow in the air compression groove into the hot air groove, so that the hot air in the hot air groove is pushed out quickly by the air flow and at the same time the hot air is temporarily stored by the air compression plate.

[0021] 3. The bottom plate rotates to drive the bottom shaft seat to rotate synchronously, so that the bottom shaft seat drives the diffuser plate to swing left and right through the fixed rod to squeeze the diffuser plate, so that the diffuser plate disperses the hot air at the bottom to the middle inner wall of the steel coil workpiece, so that the middle inner wall of the steel coil workpiece is heated evenly, avoiding the heat only going vertically upwards and unable to directly contact the middle inner wall of the steel coil workpiece.

[0022] 4. By starting the reduction motor to rotate in the reverse direction, the bottom plate is driven to make the limit rod approach and squeeze the top pull block to move, thereby driving the metal pull rod to slide the striking ball out synchronously. When the fan plate rotates, the metal pull rod swings the striking ball to hit the outer wall of the steel coil workpiece, thereby causing the outer wall of the steel coil workpiece to vibrate and some of the compound residues on the outer wall to be shaken off, thereby facilitating the subsequent cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a vertical cross-sectional view of the present invention.

[0025] Figure 3 It is a cross-sectional view of the bell-type furnace body in the present invention.

[0026] Figure 4 It is a partial cross-sectional view of the heat pressure control mechanism in the present invention.

[0027] Figure 5 It is a partial cross-sectional view of the heat pressure control mechanism and the air push mechanism in the present invention.

[0028] Figure 6 It is a partial cross-sectional view of the scraping mechanism in the present invention.

[0029] Figure 7 It is a structural schematic diagram of the diffusion mechanism in the present invention.

[0030] Figure 8 It is a partial cross-sectional view of the knock-off mechanism in the present invention.

[0031] The accompanying drawings are marked as follows: 1. hood-type furnace body; 101. heating component; 2. base; 3. steel coil workpiece; 4. heat pressure control mechanism; 41. reduction motor; 42. bottom plate; 43. rotating rod; 44. fan plate; 45. coil spring; 46. air storage plate; 47. top block; 48. limiting rod; 49. extension sleeve; 5. air push mechanism; 51. threaded rod; 52. air pressure plate; 53. lever; 54. supporting spring member; 6. scraping mechanism; 61. top plate; 62. roller; 63. supporting rod; 64. scraper; 7. diffusion mechanism; 71. bottom shaft seat; 72. air dispersion plate; 73. hinged slider; 74. fixing rod; 8. knock-off mechanism; 81. metal pull rod; 82. top pull block; 83. hitting ball; 84. magnet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The secondary annealing process of silicon steel in our company generally includes the following steps:

[0034] S1: Place the steel coil coated with MgO on the base and cover it with a bell-type furnace body 1, then heat it up through the heating component (Mg(OH)2 in MgO decomposes to release chemical water at 350-450°C) and mix the protective gas, and then keep it warm for 30 / h;

[0035] S2: Then slowly heat up the temperature through the heating assembly (12-17℃ / h to 850-1050℃, (GO and Hi-B steel mainly composed of MNS), and the steel coil forms a single {110} <001> Texture;

[0036] S3: The temperature is further raised to 1000-1100°C by the heating component, and MgO reacts chemically with SiO2 in the surface oxide film to form a Mg2SiO4 (magnesium silicate or fayalite) glass film bottom layer. At this time, dp is controlled to be less than or equal to -7°C, preferably less than or equal to -15°C (GO steel) or -10-+30°C (Hi-B steel mainly composed of AIN);

[0037] S4: Continue to heat up to 1190±20℃ by heating the assembly, replace with pure H2 with dp=-60℃ and O2 less than 1ppm, perform purification annealing, and keep warm for 30 / h. The dp of the discharged hydrogen is less than or equal to -10℃, preferably less than or equal to -20℃;

[0038] S5: Then, naturally cool down by power outage and replace 3H2+N2 (to 700°C);

[0039] S6: Finally, replace N2 and cool down to 320°C before taking out of the furnace.

[0040] Refer to the instruction manual Figure 1-8 A silicon steel secondary annealing process according to an embodiment of the present invention is implemented by a novel silicon steel secondary annealing device. Figure 1 and Figure 2 As shown, the novel silicon steel secondary annealing device comprises a bell-type furnace body 1, a base 2 is fixedly installed at the bottom of the bell-type furnace body 1, a steel coil workpiece 3 is arranged on the top of the base 2, the steel coil workpiece 3 is placed on the base 2, and then the bell-type furnace body 1 is covered on the base 2, a heat pressure control mechanism 4 is installed on the inner wall of the bell-type furnace body 1, and an air push mechanism 5 is installed on the top of the heat pressure control mechanism 4;

[0041] like Figure 3 As shown, a hot air groove is provided on the inner wall of the bell-type furnace body 1, and a heating component 101 is fixedly installed on the inner wall of the hot air groove, so that heat is generated by the heating component 101, and a plurality of ventilation slots are provided on one side of the hot air groove, so that the heat accumulated in the hot air groove can be diffused outward through the ventilation slots;

[0042] like Figure 3 As shown, the inner wall of the ventilation slot is arranged in a slope shape, and the ventilation slot is a slot arranged in a downwardly inclined state, so that when the heat diffuses from the ventilation slot to the outside, the hot air can diffuse out in a downward state, so that the hot air will not be concentrated and dispersed at the top of the hood-type furnace body 1, and the hot air can go downward first, so that the hot air in the hood-type furnace body 1 can be evenly distributed up and down.

[0043] like Figure 2 and Figure 4 As shown, the heat pressure control mechanism 4 includes a reduction motor 41 fixedly installed at the bottom of the base 2, and a bottom plate 42 is fixedly installed on the top of the reduction motor 41. By starting the reduction motor 41, the reduction motor 41 can synchronously drive the bottom plate 42 to rotate slowly. The cross-sectional area of ​​the bottom plate 42 is larger than the cross-sectional area of ​​the steel coil workpiece 3. The top of the bottom plate 42 and the bottom of the steel coil workpiece 3 fit each other, so that the bottom plate 42 can hold the steel coil workpiece 3, and then when the bottom plate 42 rotates slowly, it can drive the steel coil workpiece 3 to rotate synchronously and slowly, so that the steel coil workpiece 3 can be evenly heated;

[0044] like Figure 4 As shown, a plurality of rotating rods 43 are rotatably mounted on the top of the bottom plate 42, and when the bottom plate 42 rotates, the plurality of rotating rods 43 can be driven to rotate synchronously, and the plurality of rotating rods 43 are arranged in a ring-shaped manner with equal spacing around the outer circumferential surface of the bottom plate 42, and the plurality of rotating rods 43 circle around the outer side of the steel coil workpiece 3, and the fan plate 44 can be driven to move synchronously;

[0045] like Figure 4 As shown, a fan plate 44 is fixedly installed on one side of the rotating rod 43, and the fan plate 44 is driven by the bottom plate 42 through the rotating rod 43 to rotate synchronously. A coil spring 45 is fixedly installed at the bottom of the rotating rod 43, and the coil spring 45 is fixedly installed on the inner wall of the bottom plate 42. When the rotating rod 43 rotates, the coil spring 45 is extended or contracted by the rotating rod 43, and the rotating rod 43 can rotate with the help of the elasticity of the coil spring 45. The height of the fan plate 44 is the same as the height of the steel coil workpiece 3. There is a distance between the fan plate 44 and the steel coil workpiece 3, and when the fan plate 44 rotates, the hot air can be fanned to the outer surface of the steel coil workpiece 3, so that the steel coil workpiece 3 can be heated evenly at the same time.

[0046] like Figure 5 As shown, one side of the fan plate 44 is hinged with a plurality of gas storage plates 46, so that the gas storage plates 46 can rotate on one side of the fan plate 44, and the bottom of the plurality of gas storage plates 46 is provided with a top block 47, and a limiting rod 48 is fixedly installed on one side of the top block 47, and the limiting rod 48 is fixedly installed on the top of the hood-type furnace body 1, and then when the fan plate 44 is driven by the bottom plate 42 to approach the limiting rod 48, the limiting rod 48 first contacts the gas storage plate 46, and then by squeezing the gas storage plate 46, the gas storage plate 46 drives the fan plate 44 to rotate, and then the top block 47 on the limiting rod 48 approaches and squeezes the gas storage plate 46, and then as the tangent angle between the limiting rod 48 and the gas storage plate 46 changes, the gas storage plate 46 is lifted up by the top block 47, and then the gas storage plate 46 rotates upward, so as to form a parallel cavity, and then the diffused hot air is temporarily stored between the gas storage plate 46 and the steel coil workpiece 3;

[0047] like Figure 5 As shown, a plurality of air storage plates 46 are arranged obliquely with one side of the fan plate 44 as a plane, and the bottom of the air storage plate 46 fits with the top of the top block 47, so that when the top block 47 approaches and moves, the air storage plate 46 can be lifted, and the air storage plate 46 can be gradually rotated from the initial downward inclined state to an upward inclined state, forming a cavity composed of the air storage plate 46, the fan plate 44 and the steel coil workpiece 3 to temporarily store hot air.

[0048] like Figure 5As shown, an extension sleeve 49 is slidably installed on one side of the air storage plate 46, and the vertical cross-sectional area of ​​the extension sleeve 49 is larger than that of the air storage plate 46. When the air storage plate 46 rotates and is tilted upward, the extension sleeve 49 slides out due to gravity, thereby extending one side of the air storage plate 46 close to the ventilation slot, thereby making the cavity composed of the air storage plate 46, the fan plate 44 and the steel coil workpiece 3 longer, so that the hot air can be better temporarily stored.

[0049] like Figure 1 and Figure 2 As shown, the air storage plate 46 is made of titanium alloy material, so that the air storage plate 46 can withstand high-temperature hot air. The length of the air storage plate 46 is greater than the length of the fan plate 44. The air storage plate 46 and the fan plate 44 are arranged perpendicular to each other. The air storage plate 46 and the limiting rod 48 are arranged perpendicular to each other, so that the air storage plate 46 can temporarily store hot air.

[0050] In a specific implementation, heat is generated by heating the heating component 101, and then the hot air is diffused outward and downward through the ventilation slots, and at the same time, the reduction motor 41 is started to drive the bottom plate 42 to rotate slowly counterclockwise, so that the bottom plate 42 drives the steel coil workpiece 3 to rotate slowly counterclockwise and evenly receive the hot air;

[0051] At the same time, the bottom plate 42 drives the plurality of rotating rods 43 to rotate counterclockwise, thereby causing the coil spring 45 to stretch and store force, and then the rotating rod 43 causes the fan plate 44 to rotate counterclockwise synchronously, and then when the fan plate 44 approaches the limiting rod 48, the limiting rod 48 first contacts the air storage plate 46, and then the limiting rod 48 squeezes the air storage plate 46 to drive the fan plate 44 to rotate counterclockwise;

[0052] At the same time, as the tangent angle between the limit rod 48 and the gas storage plate 46 changes, the gas storage plate 46 is lifted upward by the top block 47, and then the gas storage plate 46 rotates upward, and then the extension sleeve 49 slides out by gravity to extend the length of the gas storage plate 46, thereby forming a parallel cavity, and then the diffused hot air is temporarily stored in the cavity composed of the gas storage plate 46, the fan plate 44 and the steel coil workpiece 3, so that the hot air can be temporarily stored;

[0053] Thus, the fan plate 44 is gradually moved away from the limiting rod 48 through the continuous counterclockwise rotation of the bottom plate 42, and the rotating rod 43 drives the fan plate 44 to rotate through the elasticity of the coil spring 45, so that it can hold more hot air, and then after the top block 47 on the limiting rod 48 is away from the air storage plate 46, the air storage plate 46 rotates downward by gravity, so that the air storage plate 46 pushes the hot air temporarily stored at the bottom downward, and the hot air is driven downward, so that the hot air contacts the steel coil workpiece 3 in a downward-first-upward manner, so that the upper and lower parts of the steel coil workpiece 3 are evenly heated, thereby avoiding the situation where the reaction effect of the steel coil workpiece 3 is different due to the heating rate of the steel coil workpiece 3;

[0054] After the air storage plate 46 rotates downward, the air storage plate 46 is in a state of being tilted downward, so that the extension sleeve 49 slides back to the original position again.

[0055] like Figure 5 As shown, the air push mechanism 5 includes an air compression groove opened on the top of the hot air groove, and the air compression groove and the hot air groove are interconnected, so that the air flow of the air compression groove can directly enter the hot air groove, and a threaded rod 51 is rotatably installed on the inner wall of the air compression groove, and an air compression plate 52 is threadedly connected to the outer surface of the threaded rod 51, and the threaded rod 51 is a thread with a large pitch, so that the air compression plate 52 can move up and down quickly when the threaded rod 51 rotates, and a lever 53 is fixedly installed at the bottom of the threaded rod 51, and the rotation of the lever 53 can drive the threaded rod 51 to rotate synchronously, and then the rotation of the threaded rod 51 drives the air compression plate 52 to move up and down, so that the air compression plate 52 can send the air flow of the air compression groove from the top into the hot air groove;

[0056] like Figure 5 As shown, the lever 53 penetrates the inner wall of the bell-type furnace body 1, and one side of the lever 53 is perpendicular to the outer surface of the rotating rod 43. The lever 53 and the rotating rod 43 fit each other, and then when the rotating rod 43 is close to the lever 53, the rotating rod 43 can squeeze and push the lever 53, so that the lever 53 rotates;

[0057] like Figure 5 As shown, a supporting spring member 54 is fixedly installed at the bottom of the air compression plate 52, and the supporting spring member 54 is fixedly installed at the bottom of the air compression groove. The air compression plate 52 is then supported by the supporting spring member 54 so that the air compression plate 52 is located at the top of the air compression groove, so that the air compression plate 52 can press the airflow in the air compression groove into the hot air groove when it moves down in the air compression groove next time.

[0058] like Figure 5As shown, the air compression plate 52 is made of rubber and is arranged in a circular ring shape. The outer wall of the air compression plate 52 fits closely with the inner wall of the air compression groove, so that the air compression plate 52 fits closely with the inner wall of the air compression groove, so that when the air compression plate 52 moves downward in the air compression groove, most of the air flow in the air compression groove can be compressed into the hot air groove.

[0059] In a specific implementation, when the bottom plate 42 rotates and drives the rotating rod 43 to approach the lever 53, the lever 53 is squeezed and rotated, so that the rotation of the lever 53 drives the threaded rod 51 to rotate synchronously, and the rotation of the threaded rod 51 causes the air pressure plate 52 to move downward quickly, so that the air pressure plate 52 presses most of the air flow in the air pressure groove into the hot air groove, so that the hot air in the hot air groove is pushed out quickly by the air flow;

[0060] While sending out the hot air, a cavity is formed at the bottom of the air storage plate 46, which just receives the hot air, making it convenient to send the hot air evenly upward and downward to the steel coil workpiece 3 later.

[0061] like Figure 6 As shown, a scraping mechanism 6 is installed on the outer wall of the bottom plate 42, and the scraping mechanism 6 includes a top extrusion plate 61 fixedly installed on the outer wall of the bottom plate 42, so that when the bottom plate 42 rotates, the top extrusion plate 61 can be driven to rotate synchronously;

[0062] like Figure 6 As shown, the top of the extruded top plate 61 is arranged in a wave shape, and the extruded top plate 61 is arranged in a circular ring shape, so that when the extruded top plate 61 rotates, one side can be in a high and low alternating state, and the cross-sectional area of ​​the extruded top plate 61 is the same as the cross-sectional area of ​​the inner wall of the bell-type furnace body 1, so that the extruded top plate 61 rotates at the bottom of the bell-type furnace body 1;

[0063] like Figure 6 As shown, a slide rail groove is provided on the top of the top extrusion plate 61, and rollers 62 are slidably installed on both sides of the top of the slide rail groove, so that when the top extrusion plate 61 rotates, the rollers 62 can be lifted up and down alternately through the wavy top, so that the rollers 62 can move up and down reciprocatingly, and a support rod 63 is fixedly installed on the top of the roller 62, and the support rod 63 and the top of the top extrusion plate 61 are perpendicular to each other, so that the rollers 62 drive the support rod 63 to move up and down synchronously;

[0064] like Figure 6 As shown, a plurality of scrapers 64 are fixedly mounted on the outer surface of the support rod 63, and the plurality of scrapers 64 are arranged vertically and equidistantly on the outer surface of the support rod 63, and then the reciprocating up and down movement of the support rod 63 drives the plurality of scrapers 64 to synchronously reciprocate up and down, and the outer surface of the scraper 64 fits against the inner wall of the hood-type furnace body 1, so that the scraper 64 reciprocates up and down to scrape the inner wall of the hood-type furnace body 1, thereby scraping off the dirt and chemical residues remaining on the inner wall of the hood-type furnace body 1.

[0065] In a specific implementation, when the bottom plate 42 rotates, it can drive the top plate 61 to rotate synchronously, so that the top plate 61 lifts the roller 62 up and down alternately through the wavy top, so that the roller 62 moves up and down reciprocatingly and drives the support rod 63 to move up and down synchronously, and then drives multiple scrapers 64 to move up and down synchronously to scrape the inner wall of the hood-type furnace body 1, so that the dirt and chemical residues remaining on the inner wall of the hood-type furnace body 1 are scraped off.

[0066] like Figure 7 As shown, a diffusion mechanism 7 is installed on the top of the bottom plate 42, and the diffusion mechanism 7 includes a bottom shaft seat 71 fixedly installed on the top of the bottom plate 42, so that when the bottom plate 42 rotates, the bottom shaft seat 71 is driven to rotate synchronously, and a diffuser plate 72 is hinged on the top of the bottom shaft seat 71, so that the bottom shaft seat 71 drives the diffuser plate 72 to rotate synchronously, and the diffuser plate 72 can swing left and right by itself;

[0067] like Figure 7 As shown, the air diffuser plate 72 is inclined with the top of the bottom plate 42 as a plane, and the height of the air diffuser plate 72 is lower than the height of the steel coil workpiece 3, so that the hot air at the bottom can be dispersed to the middle inner wall of the steel coil workpiece 3 by the air diffuser plate 72 through the swing of the air diffuser plate 72;

[0068] like Figure 7 As shown, a slider groove is provided on the top of the diffuser plate 72, and a hinged slider 73 is slidably installed on the top of the slider groove, so that the hinged slider 73 can slide back and forth on the top of the diffuser plate 72, and a fixing rod 74 is hinged on the top of the hinged slider 73, and the fixing rod 74 is fixedly installed on the top of the hood-type furnace body 1. When the bottom plate 42 drives the diffuser plate 72 to rotate, the fixed fixing rod 74 moves freely on the diffuser plate 72 through the hinged slider 73, and at the same time, the diffuser plate 72 can swing back and forth through the fixed fixing rod 74.

[0069] In the specific implementation, the bottom plate 42 is rotated to drive the bottom shaft seat 71 to rotate synchronously, and then the bottom shaft seat 71 drives the diffuser plate 72 to rotate synchronously. At this time, the fixing rod 74 is fixed so that the fixing rod 74 can move freely on the diffuser plate 72 through the hinged slider 73, so that the fixing rod 74 squeezes the diffuser plate 72 to swing left and right, so that the diffuser plate 72 disperses the hot air at the bottom to the middle inner wall of the steel coil workpiece 3, so that the middle inner wall of the steel coil workpiece 3 is heated evenly, avoiding the heat only going vertically upwards but unable to directly contact the middle inner wall of the steel coil workpiece 3.

[0070] like Figure 8As shown, a knock-off mechanism 8 is installed on one side of the fan plate 44, and the knock-off mechanism 8 includes a plurality of metal tie rods 81 slidably installed on one side of the fan plate 44, and the plurality of metal tie rods 81 are arranged parallel to each other with the fan plate 44, and the metal tie rods 81 and the steel coil workpiece 3 are arranged perpendicular to each other, so that the metal tie rods 81 can slide out of one side of the fan plate 44, so that the metal tie rods 81 can drive the striking ball 83 to approach the outer surface of the steel coil workpiece 3;

[0071] like Figure 4 and Figure 8 As shown, a top pull block 82 is fixedly installed on one side of the metal pull rod 81, and the top pull block 82 and the metal pull rod 81 are arranged perpendicular to each other, so that when the top pull block 82 is pulled out, it can drive the metal pull rod 81 to slide out synchronously, and the top pull block 82 and the limit rod 48 are arranged perpendicular to each other, and then after the annealing work of the steel coil workpiece 3 is completed, by starting the reduction motor 41 to rotate in the reverse direction, the reduction motor 41 drives the bottom plate 42 to rotate slowly clockwise, so that the bottom plate 42 drives the limit rod 48 to approach the fan plate 44 from the other side of the fan plate 44, so that the limit rod 48 approaches and squeezes the top pull block 82 to move;

[0072] like Figure 8 As shown, a striking ball 83 is fixedly installed on one side of the metal pull rod 81, so that when the metal pull rod 81 slides out, it can drive the striking ball 83 to slide out synchronously. A magnet 84 is provided on the other side of the metal pull rod 81. The magnet 84 is fixedly installed on the inner wall of the fan plate 44, so that the metal pull rod 81 is adsorbed by the magnet 84 when it is in the initial position.

[0073] In the specific implementation, after the annealing work of the steel coil workpiece 3 is completed, the reduction motor 41 is started to rotate in the reverse direction to drive the bottom plate 42 to rotate slowly clockwise, so that the bottom plate 42 drives the limit rod 48 to move from the other side of the fan plate 44 close to the fan plate 44 and squeeze the top pull block 82 to move, so that the top pull block 82 drives the metal pull rod 81 to slide the hitting ball 83 out synchronously. At this time, the metal pull rod 81 is separated from the magnet 84, and then when the fan plate 44 rotates due to the elastic force of the coil spring 45, the fan plate 44 drives the metal pull rod 81 to bring the hitting ball 83 to the outer wall of the steel coil workpiece 3, and then the rotating swinging force of the fan plate 44 causes the hitting ball 83 to hit the outer wall of the steel coil workpiece 3, so that the outer wall of the steel coil workpiece 3 vibrates, and then some of the compound residues on the outer wall of the steel coil workpiece 3 are shaken off, so as to facilitate the subsequent cleaning work.

[0074] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0075] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0076] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silicon steel secondary annealing device, comprising a bell-type furnace body (1), a base (2) being fixedly mounted at the bottom of the bell-type furnace body (1), a steel coil workpiece (3) being disposed on the top of the base (2), characterized in that: A heat pressure control mechanism (4) is installed on the inner wall of the bell-type furnace body (1), and an air push mechanism (5) is installed on the top of the heat pressure control mechanism (4); The heat pressure control mechanism (4) comprises a reduction motor (41) fixedly mounted on the bottom of the base (2); a bottom plate (42) is fixedly mounted on the top of the reduction motor (41); the cross-sectional area of ​​the bottom plate (42) is larger than the cross-sectional area of ​​the steel coil workpiece (3); the top of the bottom plate (42) and the bottom of the steel coil workpiece (3) are in contact with each other; A plurality of rotating rods (43) are rotatably mounted on the top of the bottom plate (42), and the plurality of rotating rods (43) are arranged in an annular manner and at equal intervals around the outer circumferential surface of the bottom plate (42); A fan plate (44) is fixedly mounted on one side of the rotating rod (43), a coil spring (45) is fixedly mounted on the bottom of the rotating rod (43), and the coil spring (45) is fixedly mounted on the inner wall of the bottom plate (42). The fan plate (44) has the same height as the steel coil workpiece (3), and a distance is left between the fan plate (44) and the steel coil workpiece (3); A plurality of gas storage plates (46) are hingedly connected to one side of the fan plate (44); a top block (47) is provided at the bottom of the plurality of gas storage plates (46); a limiting rod (48) is fixedly mounted on one side of the top block (47); and the limiting rod (48) is fixedly mounted on the top of the bell-type furnace body (1); The plurality of air storage plates (46) are arranged obliquely with one side of the fan plate (44) as a plane, and the bottom of the air storage plate (46) and the top of the top block (47) are in contact with each other; The inner wall of the bell-type furnace body (1) is provided with a hot gas groove, a heating component (101) is fixedly mounted on the inner wall of the hot gas groove, and a plurality of ventilation slots are provided on one side of the hot gas groove; The inner wall of the ventilation slot is arranged in a slope shape; The air push mechanism (5) comprises a compressed air groove opened on the top of the hot air groove, the compressed air groove and the hot air groove are connected to each other, a threaded rod (51) is rotatably mounted on the inner wall of the compressed air groove, an air compression plate (52) is threadedly connected to the outer surface of the threaded rod (51), and a lever (53) is fixedly mounted on the bottom of the threaded rod (51); The shifting rod (53) passes through the inner wall of the bell-type furnace body (1), one side of the shifting rod (53) and the outer surface of the rotating rod (43) are arranged perpendicular to each other, and the shifting rod (53) and the rotating rod (43) are in contact with each other; A support spring component (54) is fixedly mounted on the bottom of the air compression plate (52), and the support spring component (54) is fixedly mounted on the bottom of the air compression groove; A diffusion mechanism (7) is installed on the top of the bottom plate (42), and the diffusion mechanism (7) comprises a bottom shaft seat (71) fixedly installed on the top of the bottom plate (42), so that when the bottom plate (42) rotates, the bottom shaft seat (71) is driven to rotate synchronously, and a diffuser plate (72) is hingedly connected to the top of the bottom shaft seat (71), so that the bottom shaft seat (71) drives the diffuser plate (72) to rotate synchronously, and the diffuser plate (72) itself swings left and right; The air diffuser plate (72) is arranged in an inclined manner with the top of the bottom plate (42) as a plane, and the height of the air diffuser plate (72) is lower than the height of the steel coil workpiece (3); A slider groove is provided at the top of the air diffuser plate (72), and a hinged slider (73) is slidably mounted at the top of the slider groove, so that the hinged slider (73) can slide forward and backward on the top of the air diffuser plate (72). A fixing rod (74) is hingedly mounted at the top of the hinged slider (73), and the fixing rod (74) is fixedly mounted on the top of the hood-type furnace body (1). When the bottom plate (42) drives the air diffuser plate (72) to rotate, the fixed fixing rod (74) moves freely on the air diffuser plate (72) through the hinged slider (73), and at the same time, the air diffuser plate (72) can swing back and forth left and right through the fixed fixing rod (74).

2. A silicon steel secondary annealing device according to claim 1, characterized in that: An extension sleeve plate (49) is slidably mounted on one side of the gas storage plate (46), and the vertical cross-sectional area of ​​the extension sleeve plate (49) is larger than that of the gas storage plate (46).

3. A silicon steel secondary annealing device according to claim 2, characterized in that: The air storage plate (46) is made of titanium alloy material, the length of the air storage plate (46) is greater than the length of the fan plate (44), the air storage plate (46) and the fan plate (44) are arranged perpendicular to each other, and the air storage plate (46) and the limiting rod (48) are arranged perpendicular to each other.

4. A silicon steel secondary annealing device according to claim 3, characterized in that: The air compression plate (52) is made of rubber and is arranged in a circular ring shape. The outer wall of the air compression plate (52) fits the inner wall of the air compression groove.

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