Device for improving sintered neodymium-iron-boron throwing piece crystallization

Abstract

The invention relates to a device for improving sintered neodymium iron boron sheet throwing crystallization, and relates to the technical field of sintered neodymium iron boron, the device comprises a sheet throwing furnace, a feeding assembly, a cooling assembly, a smashing assembly and a heat dissipation assembly, the feeding assembly is arranged in the sheet throwing furnace and used for storing molten steel; the cooling assembly is arranged in the sheet throwing furnace and is used for cooling the molten steel into a thin strip; the smashing assembly is arranged at the bottom of the sheet throwing furnace and is used for smashing the thin strip; the heat dissipation assembly is arranged on the sheet throwing furnace and used for discharging hot air in the sheet throwing furnace. The method has the effect of improving the production quality of sintered neodymium iron boron.

Description

Technical Field

[0001] The present application relates to the technical field of sintered NdFeB, and in particular to an improved sintered NdFeB sheet crystallization device. Background Art

[0002] NdFeB permanent magnet material is a permanent magnet material based on the intermetallic compound Nd2Fe14B. Sintered NdFeB permanent magnet material belongs to the third generation of rare earth permanent magnet material. Compared with other types of permanent magnet materials, it has outstanding advantages such as high magnetic properties and low price. It is widely used in computers, information, automobiles, magnetic resonance imaging, CD-ROM, etc.

[0003] At present, the raw materials are generally put into a sheet-throwing furnace and melted into molten steel under the protection of argon gas. After electromagnetic stirring, the temperature of the molten steel is adjusted to 140℃-143℃, and then poured onto a rotating copper roller with circulating water to cool into alloy sheets.

[0004] However, NdFeB alloy sheets have a main phase (melting point 1200℃-1400℃), a secondary boron phase (melting point around 900℃), and a secondary neodymium phase (melting point around 650℃). When the molten steel is poured onto the copper roller for chilling, the main phase and the secondary boron phase are easily cooled directly into a solid state. When the one-time chilling temperature of the molten steel is not low enough, part of the secondary neodymium phase is still in liquid state. In the subsequent conventional cooling, the secondary neodymium phase is prone to aggregation, resulting in uneven distribution and affecting product performance. Summary of the invention

[0005] In order to improve the production quality of sintered NdFeB, the present application provides a device for improving the sintered NdFeB sheet crystallization.

[0006] The present application provides an improved sintered NdFeB sheet crystallization device, which adopts the following technical solutions: A device for improving sintered NdFeB sheet crystallization, comprising: Flake throwing furnace; A feeding assembly is arranged in the sheet-throwing furnace and is used to store molten steel; A cooling assembly is arranged in the sheet-throwing furnace and is used to cool the molten steel into a thin strip; A breaking assembly is arranged at the bottom of the sheet-throwing furnace and is used to break the thin strip; The heat dissipation component is arranged on the sheet-throwing furnace and is used for discharging the hot air in the sheet-throwing furnace.

[0007] By adopting the above technical solution, the sheet-splitting furnace provides a closed environment for the melting, sheet-splitting and cooling processes of molten steel. The feeding assembly ensures that the molten steel can flow into the sheet-splitting area evenly and stably. Then, the cooling assembly rapidly cools the molten steel and solidifies it into a thin strip. The breaking assembly ensures that the thin strip can be broken evenly and effectively for subsequent processing and treatment. At the same time, the heat dissipation component discharges the hot air in the furnace in time, keeps the temperature in the sheet-spinning furnace stable, and ensures the smooth progress of the sheet-spinning process, so that it is easy to obtain NdFeB sheet-spinning with higher crystal quality and more stable performance; By optimizing the sheet-spinning process, NdFeB materials with smaller grain size and clearer grain boundaries can be obtained, thereby improving the magnetic properties and physical strength of the material, and further enhancing its performance in practical applications.

[0008] Optionally, the feeding assembly includes: The injection cylinder is fixedly arranged in the sheet-throwing furnace and communicated with the external heating tank; A guide groove is arranged obliquely, and the guide groove is fixed in the sheet-throwing furnace and is located below the injection cylinder; The material holding box has an opening at the top and one side. The material holding box is fixed in the sheet-flipping furnace and is located below the guide groove.

[0009] By adopting the above technical scheme, the molten steel enters the guide groove through the injection cylinder, and the guide groove guides the molten steel from the injection cylinder to the material box, while achieving uniform distribution of the molten steel to ensure that the molten steel can flow smoothly and unimpeded, avoiding turbulence or eddy currents during the flow process, thereby affecting the quality of the sheet.

[0010] Optionally, the cooling assembly includes: A rotating roller is rotatably connected in the sheet throwing furnace and abuts against the opening side of the material holding box; A cooling member is arranged in the sheet-throwing furnace, the cooling member is located on a side of the roller away from the material holding box and below a tangent line at the top end of the roller; Cooling section, including: A liquid storage box, fixedly mounted on one end of the rotating roller, and having cooling liquid flowing therein; A flow guide pipe is fixedly arranged in the rotating roller and spirally wound on the inner wall of the rotating roller, and both ends of the flow guide pipe are connected to the liquid storage box; A circulation pump is arranged on the flow guide pipe; The driving unit is arranged on the rotating roller and is used for driving the rotating roller to rotate.

[0011] By adopting the above technical solution, the driving unit drives the roller to rotate, and the roller serves as a direct contact surface for the molten steel to be thrown out. The circulating pump drives the coolant to circulate between the guide pipe and the liquid storage box, so that the coolant is evenly distributed in the roller, forming a circulation loop of the coolant. When the molten steel contacts the rollers, it ensures that the molten steel can be thrown out smoothly and form a thin strip. Under the action of centrifugal force, the thin strip is thrown onto the cooling part, and the cooling part further cools the thin strip to ensure that the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product.

[0012] Optionally, the driving unit includes: Motor 1, fixedly mounted on the sheet-throwing furnace; A synchronous wheel 1, coaxially connected to the output shaft of the motor 1; A second synchronous wheel is coaxially connected to the rotating roller via a connecting shaft; The first synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel.

[0013] By adopting the above technical solution, the output shaft of motor one drives synchronous wheel one to rotate, synchronous wheel one drives synchronous belt one to rotate, synchronous belt one drives synchronous wheel two to rotate, and synchronous wheel two drives the roller to rotate through the connecting shaft, which helps to adjust the film-swinging speed according to production needs, thereby improving product quality and production efficiency.

[0014] Optionally, the cooling member is a copper roller, and is rotatably connected to the sheet-throwing furnace via a rotating shaft, a synchronous wheel three is coaxially fixed on the rotating shaft, a synchronous wheel four is coaxially fixed on the connecting shaft, and the synchronous wheel three and the synchronous wheel four are jointly sleeved with a synchronous belt two; a cooling part is also provided on the copper roller.

[0015] By adopting the above technical scheme, the connecting shaft drives synchronous wheel four to rotate, synchronous wheel four drives synchronous belt two to rotate, synchronous belt two drives synchronous wheel three to rotate, and synchronous wheel three drives the copper roller to rotate. At the same time, the cooling part improves the cooling effect of the copper roller. The copper roller can quickly absorb and disperse the heat on the thrown steel strip. After cooling, the thin strip is thrown to the bottom of the sheet-throwing furnace, which helps to maintain the stability and continuity of the steel strip during the throwing process, thereby improving product quality and production efficiency.

[0016] Optionally, the cooling member is a conveyor belt, a cooling pipe is fixedly provided in the conveyor belt, a circulating pump is provided on the cooling pipe, and coolant flows in the cooling pipe; tensioning rollers are respectively provided at both ends of the conveyor belt, and the tensioning rollers are rotatably connected to the swinging furnace, one of the tensioning rollers is coaxially fixed with a synchronous wheel five, and a synchronous wheel six is ​​coaxially fixed on the connecting shaft, and the synchronous wheel five and the synchronous wheel six are set with a synchronous belt three.

[0017] By adopting the above technical solution, synchronous wheel six drives synchronous belt three to rotate, synchronous belt three drives synchronous wheel five to rotate, synchronous wheel five drives the tensioning roller to rotate, the tensioning roller drives the conveyor belt to rotate, and the conveyor belt drives the thin belt to move; Through the embedded cooling pipe and circulation pump, efficient cooling of the conveyor belt is achieved, which makes it easy to ensure that the thin strip is cooled thoroughly and the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product.

[0018] Optionally, the breaking component includes: A collecting box, the top of which is open and fixed on the bottom of the sheet-throwing furnace; Motor 2, fixedly mounted on the sheet-throwing furnace; A connecting rod, coaxially connected to the output shaft of the second motor; A rotating rod, fixedly connected to an end of the connecting rod away from the second motor; A plurality of stirring blades are provided, and the plurality of stirring blades are arranged along the axis direction of the rotating rod, and the stirring blades are fixedly connected to the rotating rod.

[0019] By adopting the above technical solution, when the thin strip is cooled and formed, it falls into the collection box, and the output shaft of motor 2 drives the connecting rod to rotate, the connecting rod drives the rotating rod to rotate, the rotating rod drives the stirring blade to rotate, and the stirring blade cuts the thin strip in the collection box to achieve a crushing effect, thereby facilitating the collection of NdFeB alloy sheets, thereby improving production efficiency and product quality.

[0020] Optionally, the heat dissipation components are provided in two groups, and the two groups of heat dissipation components are respectively provided on the two side walls of the sheet-throwing furnace, and the heat dissipation components include: An exhaust box, the exhaust box is fixedly arranged at the bottom of the sheet-throwing furnace, and a side of the exhaust box close to the connecting rod is open; An exhaust pump is arranged on the exhaust box.

[0021] By adopting the above technical solution, the exhaust box and the exhaust pump are used in combination to accelerate the discharge of heat, thereby reducing the temperature inside the sheet-throwing furnace and ensuring the stable operation of the equipment.

[0022] Optionally, one side of the sheet-flipping furnace is open and has a hinged closing door.

[0023] By adopting the above technical solution, the operator can easily take out the sintered material, and at the same time, it is easier to clean and maintain the furnace, ensuring the long-term stable operation of the sheet-throwing furnace.

[0024] Optionally, a visual window is provided on the closed door.

[0025] By adopting the above technical solution, through the viewing window, the operator can directly observe the working status of the interior of the sheet-throwing furnace and the condition of the sintered materials without opening the closed door, and adjust the sintering parameters according to actual needs, which helps to improve the quality and performance of the sintered materials, while easily reducing energy consumption and production costs.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: By setting up the feeding assembly, it is ensured that the molten steel can flow smoothly and unhindered, avoiding turbulence or eddy currents during the flow process, which would affect the quality of the sheet; By setting a cooling assembly, the cooling piece further cools the thin strip to ensure that the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product; By setting up a crushing component, it is easy to collect the NdFeB alloy sheets, thereby improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the structure of Example 1 of the present application; Figure 2 is a cross-sectional view in Example 1 of the present application; Figure 3 is a cross-sectional view of the cooling assembly in Example 1 of the present application; Figure 4 yes Figure 2 Magnified view at A in the middle; Figure 5 It is a cross-sectional view of the cooling assembly in Example 2 of the present application.

[0028] Description of reference numerals: 1. Flake-throwing furnace; 11. Closing door; 111. Visual window; 2. Feeding assembly; 21. Injection cylinder; 22. Guide trough; 23. Material box; 3. Cooling assembly; 31. Roller; 311. Synchronous wheel four; 312. Synchronous wheel six; 32. Driving unit; 321. Motor one; 322. Synchronous wheel one; 323. Synchronous wheel two; 324. Synchronous belt one; 33. Cooling element; 331. Synchronous wheel three; 332. Synchronous belt two; 333. Cooling pipe; 334. Synchronous wheel five; 335. Synchronous belt three; 34. Cooling unit; 341. Liquid storage box; 342. Guide pipe; 343. Circulation pump; 4. Breaking assembly; 41. Collecting box; 42. Motor two; 43. Connecting rod; 44. Rotating rod; 45. Stirring blade; 5. Heat dissipation assembly; 51. Exhaust box; 52. Exhaust pump. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] Example 1 The present application discloses an improved sintered NdFeB sheet crystallization device. Figure 1 and Figure 2 A device for improving sintered NdFeB sheet crystallization includes a sheet-throwing furnace 1, a feeding assembly 2, a cooling assembly 3, a crushing assembly 4 and a heat dissipation assembly 5. The feeding assembly 2 is arranged in the sheet-throwing furnace 1 and is used to store molten steel; the cooling assembly 3 is arranged in the sheet-throwing furnace 1 and is used to cool the molten steel into thin strips; the crushing assembly 4 is arranged at the bottom of the sheet-throwing furnace 1 and is used to crush the thin strips; the heat dissipation assembly 5 is arranged on the sheet-throwing furnace 1 and is used to discharge the hot air in the sheet-throwing furnace 1.

[0031] When in use, the feeding component 2 flows the molten steel into the sheet throwing area, and then the cooling component 3 rapidly cools the molten steel to solidify it into a thin strip, and the breaking component 4 ensures that the thin strip can be broken evenly and effectively for subsequent processing and treatment; At the same time, the heat dissipation component 5 discharges the hot air in the furnace in time, keeps the temperature in the sheet-spinning furnace 1 stable, and ensures the smooth progress of the sheet-spinning process, so that it is easy to obtain NdFeB sheet-spinning with higher crystal quality and more stable performance.

[0032] Reference Figure 1 The sheet-flipping furnace 1 is in a circular cylindrical shape and is vertically arranged. One side of the sheet-flipping furnace 1 is open and is hinged with a closing door 11, and a visual window 111 is arranged on the closing door 11.

[0033] Reference Figure 2 and Figure 3 The feeding assembly 2 includes an injection cylinder 21, a guide groove 22 and a material box 23. The injection cylinder 21 is a circular cylinder and is inclined vertically upward along the direction close to the axis of the sheet-flipping furnace 1. The injection cylinder 21 is fixed in the sheet-flipping furnace 1 and is connected to the external heating tank.

[0034] The guide groove 22 is rectangular and inclined. The guide groove 22 is fixed in the sheet-flipping furnace 1 and is located below the injection cylinder 21; the material box 23 is rectangular box-shaped, and the top and one side are open. The material box 23 is fixed in the sheet-flipping furnace 1 and is located below the guide groove 22.

[0035] When in use, the molten steel enters the guide groove 22 from the injection cylinder 21, and the guide groove 22 guides the molten steel from the injection cylinder 21 to the material box 23, thereby achieving uniform distribution of the molten steel to ensure that the molten steel can flow smoothly and unimpeded, avoiding turbulence or eddy currents during the flow process, thereby affecting the quality of the sheet.

[0036] Reference Figure 2 and Figure 3 The cooling assembly 3 includes a roller 31, a driving part 32, a cooling member 33 and a cooling part 34. The roller 31 is rotatably connected in the sheet-flipping furnace 1 and abuts against the opening side of the material box 23. The roller 31 is made of copper material.

[0037] Reference Figure 2 and Figure 4 The driving part 32 includes a motor 1 321, a synchronous wheel 1 322, a synchronous wheel 2 323 and a synchronous belt 1 324. The motor 1 321 is fixed on the film-spinning furnace 1, and the synchronous wheel 1 322 is coaxially fixedly connected with the output shaft of the motor 1 321. The synchronous wheel 2 323 is coaxially fixedly connected with the rotating roller 31 through a connecting shaft; the synchronous belt 1 324 is sleeved on the synchronous wheel 1 322 and the synchronous wheel 2 323.

[0038] The cooling member 33 is arranged in the film-throwing furnace 1, and is located on the side of the roller 31 away from the material box 23, and is located below the tangent line of the top of the roller 31. In the embodiment of the present application, the cooling member 33 is a copper roller, and is rotatably connected to the film-throwing furnace 1 through a rotating shaft.

[0039] The copper roller is arranged parallel to the axis of the rotating roller 31, a synchronous wheel 331 is coaxially fixed on the rotating shaft, a synchronous wheel 4 311 is coaxially fixed on the connecting shaft, and the synchronous wheel 331 and the synchronous wheel 4 311 are jointly sleeved with a synchronous belt 2 332; a cooling part 34 is also arranged on the copper roller.

[0040] Reference Figure 2 and Figure 3 The cooling unit 34 includes a liquid storage box 341, a flow guide tube 342 and a circulation pump 343. The liquid storage box 341 is in a circular box shape and is coaxially arranged with the roller 31. The liquid storage box 341 is fixed on one end of the roller 31 and has cooling liquid flowing inside. The flow guide tube 342 is fixed in the roller 31 and spirally wound on the inner wall of the roller 31. Both ends of the flow guide tube 342 are connected to the liquid storage box 341. The circulation pump 343 is arranged on the flow guide tube 342. The cooling unit 34 on the copper roller is arranged in the same manner as the cooling unit 34 on the roller 31, and will not be repeated here.

[0041] When in use, the output shaft of the motor 321 drives the synchronous wheel 322 to rotate, the synchronous wheel 322 drives the synchronous belt 324 to rotate, the synchronous belt 324 drives the synchronous wheel 2 323 to rotate, the synchronous wheel 2 323 drives the roller 31 to rotate, the roller 31 drives the connecting shaft to rotate, the connecting shaft drives the synchronous wheel 4 311 to rotate, the synchronous wheel 4 311 drives the synchronous belt 2 332 to rotate, the synchronous belt 2 332 drives the synchronous wheel 3 331 to rotate, the synchronous wheel 3 331 drives the copper roller to rotate, the roller 31 drives the molten steel to be thrown out and fall on the copper roller, and the thin strip is thrown to the bottom of the sheet-throwing furnace 1, which helps to maintain the stability and continuity of the steel strip during the throwing-out process, thereby improving the product quality and production efficiency; At the same time, the circulating pump 343 drives the coolant to circulate between the guide tube 342 and the liquid storage box 341, so that the coolant is evenly distributed in the roller 31, forming a circulation loop of the coolant. When the molten steel contacts the roller 31, it is ensured that the molten steel can be smoothly thrown out to form a thin strip. The copper roller further cools the thin strip to ensure that the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product.

[0042] Reference Figure 2 The crushing assembly 4 includes a collecting box 41, a second motor 42, a connecting rod 43, a rotating rod 44 and a stirring blade 45. The collecting box 41 is in a round box shape with an open top. The collecting box 41 is fixed on the bottom of the sheet-throwing furnace 1. The second motor 42 is fixed at the center of the top of the sheet-throwing furnace 1.

[0043] Reference Figure 2 The connecting rod 43 is coaxially connected to the output shaft of the second motor 42, the rotating rod 44 is connected to one end of the connecting rod 43 away from the second motor 42, and the axis direction of the rotating rod 44 is perpendicular to the axis direction of the connecting rod 43. A plurality of stirring blades 45 are provided, and the plurality of stirring blades 45 are evenly arranged along the axis direction of the rotating rod 44, and the stirring blades 45 are connected to the rotating rod 44.

[0044] When in use, after the thin strip is cooled and formed, it falls into the collection box 41, and the output shaft of the motor 2 42 drives the connecting rod 43 to rotate, the connecting rod 43 drives the rotating rod 44 to rotate, and the rotating rod 44 drives the stirring blade 45 to rotate. The stirring blade 45 cuts the thin strip in the collection box 41, making it easy to collect the NdFeB alloy sheets, thereby improving production efficiency and product quality.

[0045] Reference Figure 2 There are two groups of heat dissipation components 5, which are respectively arranged on the two side walls of the sheet-throwing furnace 1. The heat dissipation components 5 include an exhaust box 51 and an exhaust pump 52. The exhaust box 51 is fixed at the bottom of the sheet-throwing furnace 1, and the side of the exhaust box 51 close to the connecting rod 43 is open; the exhaust pump 52 is arranged on the exhaust box 51.

[0046] When in use, the air pump is started, and the air pump draws the internal hot air from the exhaust box 51, which accelerates the discharge of heat, thereby reducing the temperature inside the sheet-flipping furnace 1, and further ensuring the stable operation of the equipment.

[0047] The implementation principle of the improved sintered NdFeB sheet-swinging crystallization device of the present application embodiment is as follows: the molten steel enters the guide groove 22 from the injection cylinder 21, and the guide groove 22 guides the molten steel from the injection cylinder 21 to the material box 23. The motor and the synchronous wheel group drive and cooperate, and the roller 31 and the copper roller rotate synchronously. The roller 31 drives the molten steel to be thrown out and falls on the copper roller, and the thin strip is thrown to the bottom of the sheet-swinging furnace 1, which helps to maintain the stability and continuity of the steel strip during the throwing process, thereby improving the quality and production efficiency of the product. At the same time, the circulating pump 343 drives the coolant to circulate between the guide tube 342 and the liquid storage box 341 to form a circulation loop of the coolant. When the molten steel contacts the rotating roller 31, it is ensured that the molten steel can be smoothly thrown out and form a thin strip. The copper roller further cools the thin strip to ensure that the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product. After the thin strip is cooled and formed, it falls into the collection box 41, and the output shaft of the motor 2 42 drives the connecting rod 43 to rotate, the connecting rod 43 drives the rotating rod 44 to rotate, and the rotating rod 44 drives the stirring blade 45 to rotate, and the stirring blade 45 cuts the thin strip in the collection box 41, so that the NdFeB alloy sheets can be collected easily, thereby improving the production efficiency and product quality; At the same time, the air pump draws the internal hot air out of the exhaust box 51, which accelerates the discharge of heat, thereby reducing the temperature inside the sheet-flipping furnace 1, and further ensuring the stable operation of the equipment.

[0048] Example 2 Reference Figure 5 The difference between this embodiment and the above embodiment is that: the cooling member 33 is a conveyor belt, a cooling pipe 333 is fixedly arranged in the conveyor belt, a circulating pump 343 is also arranged on the cooling pipe 333, and a coolant flows in the cooling pipe 333; tensioning rollers are respectively arranged at both ends of the conveyor belt, and the tensioning rollers are rotatably connected to the sheet-flipping furnace 1, one of the tensioning rollers is coaxially fixed with a synchronous wheel 5 334, a synchronous wheel 6 312 is coaxially fixed on the connecting shaft, and the synchronous wheel 5 334 and the synchronous wheel 6 312 are sleeved with a synchronous belt 335.

[0049] The implementation principle of this embodiment is: the synchronous wheel six 312 drives the synchronous belt three 335 to rotate, the synchronous belt three 335 drives the synchronous wheel five 334 to rotate, the synchronous wheel five 334 drives the tensioning roller to rotate, the tensioning roller drives the conveyor belt to rotate, and the conveyor belt drives the thin belt to move; Through the embedded cooling pipe 333 and the circulating pump 343, efficient cooling of the conveyor belt is achieved, so that it is easy to ensure that the thin strip is cooled thoroughly and the secondary neodymium phase of the NdFeB alloy sheet can be completely cooled, thereby improving the yield and quality of the product.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An improved sintered NdFeB sheet crystallization device, characterized in that: include: Flake throwing furnace (1); A feeding assembly (2) is arranged in the sheet-throwing furnace (1) and is used to store molten steel; A cooling assembly (3) is arranged in the sheet-throwing furnace (1) and is used to cool the molten steel into a thin strip; A breaking component (4) is arranged at the bottom of the sheet-throwing furnace (1) and is used to break the thin strip; A heat dissipation component (5) is arranged on the sheet-throwing furnace (1) and is used to discharge hot air in the sheet-throwing furnace (1).

2. The improved sintered NdFeB sheet crystallization device according to claim 1 is characterized in that: The feeding component (2) comprises: An injection cylinder (21) is fixedly arranged in the sheet-throwing furnace (1) and is connected to an external heating tank; A guide groove (22) is arranged obliquely, and the guide groove (22) is fixedly arranged in the sheet-throwing furnace (1) and is located below the injection cylinder (21); The material holding box (23) has an opening at the top and one side. The material holding box (23) is fixed in the sheet-throwing furnace (1) and is located below the guide groove (22).

3. The improved sintered NdFeB sheet crystallization device according to claim 2, characterized in that: The cooling component (3) comprises: A rotating roller (31) is rotatably connected in the sheet-throwing furnace (1) and abuts against an opening side of the material holding box (23); A cooling member (33) is disposed in the sheet-throwing furnace (1), the cooling member (33) being located on a side of the rotating roller (31) away from the material holding box (23) and below a tangent line at the top end of the rotating roller (31); The cooling unit (34) comprises: A liquid storage box (341) is fixedly mounted on one end of the rotating roller (31) and has cooling liquid flowing therein; a flow guide tube (342) fixedly disposed in the rotating roller (31) and spirally wound on the inner wall of the rotating roller (31); both ends of the flow guide tube (342) are in communication with the liquid storage box (341); A circulation pump (343) is arranged on the flow guide pipe (342); The driving unit (32) is arranged on the rotating roller (31) and is used to drive the rotating roller (31) to rotate.

4. The improved sintered NdFeB sheet crystallization device according to claim 3 is characterized in that: The driving unit (32) comprises: Motor 1 (321) is fixedly mounted on the sheet-throwing furnace (1); A synchronous wheel (322) coaxially connected to the output shaft of the motor (321); A second synchronous wheel (323) is coaxially connected to the rotating roller (31) via a connecting shaft; The synchronous belt 1 (324) is sleeved on the synchronous wheel 1 (322) and the synchronous wheel 2 (323).

5. The improved sintered NdFeB sheet crystallization device according to claim 4, characterized in that: The cooling member (33) is a copper roller and is rotatably connected to the sheet-throwing furnace (1) via a rotating shaft. A synchronous wheel three (331) is coaxially fixedly disposed on the rotating shaft, and a synchronous wheel four (311) is coaxially fixedly disposed on the connecting shaft. The synchronous wheel three (331) and the synchronous wheel four (311) are jointly sleeved with a synchronous belt two (332). A cooling portion (34) is also disposed on the copper roller.

6. The improved sintered NdFeB sheet crystallization device according to claim 4, characterized in that: The cooling member (33) is a conveyor belt, a cooling pipe (333) is fixedly arranged in the conveyor belt, a circulating pump (343) is arranged on the cooling pipe (333), and a coolant flows in the cooling pipe (333); tension rollers are arranged at both ends of the conveyor belt, and the tension rollers are rotationally connected to the swinging furnace (1), one of the tension rollers is coaxially fixedly arranged with a synchronous wheel five (334), and a synchronous wheel six (312) is coaxially fixedly arranged on the connecting shaft, and the synchronous wheel five (334) and the synchronous wheel six (312) are sleeved with a synchronous belt three (335).

7. The improved sintered NdFeB sheet crystallization device according to claim 1, characterized in that: The breaking component (4) comprises: A collecting box (41) having an open top and fixedly mounted on the bottom of the sheet-throwing furnace (1); Motor 2 (42) is fixedly mounted on the sheet-throwing furnace (1); A connecting rod (43) coaxially connected to the output shaft of the second motor (42); A rotating rod (44) is fixedly connected to an end of the connecting rod (43) away from the second motor (42); A plurality of stirring blades (45) are provided, and the plurality of stirring blades (45) are arranged along the axial direction of the rotating rod (44), and the stirring blades (45) are fixedly connected to the rotating rod (44).

8. The improved sintered NdFeB sheet crystallization device according to claim 7, characterized in that: The heat dissipation components (5) are provided in two groups, and the two groups of heat dissipation components (5) are respectively provided on the two side walls of the sheet-throwing furnace (1), and the heat dissipation components (5) include: An exhaust box (51), the exhaust box (51) being fixedly mounted at the bottom of the sheet-throwing furnace (1), and a side of the exhaust box (51) close to the connecting rod (43) being open; An exhaust pump (52) is arranged on the exhaust box (51).

9. The improved sintered NdFeB sheet crystallization device according to claim 1, characterized in that: One side of the sheet-throwing furnace (1) is open and has a hinged closing door (11).

10. The improved sintered NdFeB sheet crystallization device according to claim 9, characterized in that: The closed door (11) is provided with a visual window (111).

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