High-performance neodymium-iron-boron magnet modification device for composite grain boundary diffusion cementation metal

Abstract

The utility model discloses a high-performance neodymium-iron-boron magnet modification device for composite grain boundary diffusion cementation metallization, which relates to the technical field of magnet preparation and comprises a base, a sintering furnace body is fixedly mounted at the top end of the base, and one end of the outer wall of the sintering furnace body is fixedly communicated with a heat insulation box. A second heat insulation door is hinged to one end of the outer wall of the heat insulation box, a heat insulation assembly is arranged in the heat insulation box, feeding assemblies for conveying materials are arranged at the bottom ends of the heat insulation box and the inner wall of the sintering furnace body, and the heat insulation box, the second heat insulation door and the first heat insulation door are arranged, so that the sintering furnace body does not make direct contact with outside air; the neodymium-iron-boron magnet can be taken out under the buffering of the heat insulation box instead of the heat insulation box, so that the heat loss in the furnace can be greatly reduced, the energy consumption is reduced, the cost is saved, the feeding assembly can drive the neodymium-iron-boron magnet powder to move, and the probability of scalding caused by manually touching and moving the sintered neodymium-iron-boron magnet powder is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of magnet preparation, in particular to a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration. Background Art

[0002] Magnets are materials that can generate magnetic fields and have the property of attracting ferromagnetic materials such as iron, nickel, cobalt and other metals. Sintered NdFeB permanent magnets are widely used in wind power generation, energy-saving home appliances, new energy vehicles and other fields due to their excellent comprehensive magnetic properties. And with the continuous advancement of manufacturing technology and the improvement of people's environmental awareness, it has attracted much attention in the market in the three major fields of energy conservation and environmental protection, new energy, and new energy vehicles. Its usage has been growing rapidly at an annual rate of 10-20%, showing good application prospects. At present, the industry often uses the sintering method to make NdFeB permanent magnet materials, which mainly includes five steps: smelting, powder making, pressing, isostatic pressing and sintering. With the continuous expansion of application fields and the increasing performance requirements of various industries, magnetic properties and corrosion resistance have become two important aspects for evaluating the technological advancement of NdFeB magnet materials. NdFeB magnets have poor corrosion resistance, which limits their application in high temperature and humid environments. Therefore, how to improve the magnetic properties of magnets and improve the corrosion resistance of sintered NdFeB magnets to give full play to their excellent magnetic properties has become a top priority for the application of NdFeB permanent magnet materials.

[0003] The existing modification of NdFeB magnets often involves mixing NdFeB magnet powder with other modified powders, and then sintering in a sintering furnace. When the sintering furnace heats the material, opening the furnace door to take the material out will cause the heat in the furnace to lose too quickly. This is because opening the furnace door causes a large temperature difference between the high-temperature area in the furnace and the outside world, and heat is lost through convection, radiation and conduction, increasing energy consumption, and may also cause uneven heating of the material, affecting its performance and quality, and affecting process stability. To this end, the utility model provides a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration, which solves the problem that opening the furnace door to take out materials will cause the heat in the furnace to lose too quickly. This is because opening the furnace door causes a large temperature difference between the high temperature area in the furnace and the outside, and the heat is lost through convection, radiation and conduction, increasing energy consumption.

[0005] To achieve the above purpose, the utility model is implemented by the following technical solutions: a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration, comprising a base, a sintering furnace body is fixedly installed on the top of the base, one end of the outer wall of the sintering furnace body is fixedly connected to a heat insulation box, one end of the outer wall of the heat insulation box is hingedly connected to a second heat insulation door, a heat insulation component is arranged inside the heat insulation box, and a feeding component is arranged at the bottom of the heat insulation box and the inner wall of the sintering furnace body for conveying materials;

[0006] The heat insulation assembly includes two rotating rods, both of which are rotatably mounted on the inner wall of the heat insulation box, and both of which have a first heat insulation door fixedly sleeved on their outer walls, and both of which have top ends that penetrate the top end of the heat insulation box and are fixedly mounted with a first gear;

[0007] The feeding assembly comprises a threaded screw, and the threaded screw is arranged inside the heat insulation box.

[0008] Preferably, a mounting vertical plate is fixedly installed on the top of the heat insulation box, an electric push rod is fixedly installed on one end of the outer wall of the mounting vertical plate, a push plate is fixedly installed on the output end of the electric push rod, two racks are symmetrically fixedly installed on one end of the outer wall of the push plate, and the two racks are respectively meshed with the two first gears.

[0009] Preferably, the bottom ends of the inner walls of the sintering furnace body and the heat insulation box are provided with slide grooves, the bottom end of the inner wall of the heat insulation box is provided with a square groove, and the inner wall of the slide groove is rotatably mounted with a threaded screw.

[0010] Preferably, one end of the outer wall of the threaded screw passes through the inner wall of the square groove and is fixedly installed with a first bevel gear, the bottom end of the base is fixedly installed with a motor, the output end of the motor passes through the inner wall of the square groove and is fixedly installed with a second bevel gear, and the second bevel gear is meshingly arranged with the first bevel gear.

[0011] Preferably, the outer wall of the threaded screw is threadedly connected with a slider, the slider is movably inserted in the inner wall of the slide groove, a moving plate is fixedly installed on the top of the slider, and a group of material boxes are fixedly installed on the top of the moving plate.

[0012] Preferably, a handle is fixedly mounted on one side of the outer wall of the second heat insulation door, and the heat insulation box is fixedly connected to the base.

[0013] Beneficial Effects

[0014] The utility model provides a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration, when it is necessary to take out the NdFeB magnet in the sintering furnace body, the electric push rod is turned on, the electric push rod is shortened, and the two racks are driven to move toward the installation vertical plate through the push plate. When moving, the two racks respectively drive the two first gears to rotate in the opposite direction, and the two first gears drive the two first insulation doors to rotate in the opposite direction through the rotating rod, so that the two first insulation doors are rotated to the inside of the insulation box, and then the two first insulation doors can be quickly opened, and direct manual contact can be prevented to avoid burns, and then the feeding assembly is turned on to move the NdFeB magnet to the second insulation door, and then the feeding assembly is turned on again. Open the electric push rod, and the electric push rod drives the two racks to extend, and drives the two first insulation doors to close the sintering furnace body to prevent heat loss from the sintering furnace body. At this time, the second insulation door can be opened to take out the NdFeB magnet. Since the heat insulation box, the second insulation door and the first insulation door are provided, the sintering furnace body is not in direct contact with the outside air, but the NdFeB magnet can be taken out under the buffering in the heat insulation box, which can greatly reduce the heat loss in the furnace, reduce energy consumption and save costs. Similarly, when the NdFeB magnet is placed in the sintering furnace body, the heat loss of the sintering furnace body can also be reduced through the cooperation of the heat insulation box, the second insulation door and the first insulation door.

[0016] (2) The high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration is provided with a feeding assembly. When the NdFeB magnet needs to be moved, the NdFeB magnet powder and other modified powders are first mixed and placed in a material box, and then pressed. After the placement is completed, the motor can be turned on, and the motor drives the second bevel gear to rotate. The second bevel gear then drives the first bevel gear and the threaded screw to rotate. During the rotation process, the threaded screw can drive the slider and the moving plate to move in the slide groove, which can drive the NdFeB magnet powder to move, thereby reducing the probability of burns caused by manual touch and movement of the sintered NdFeB magnet powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 It is a cross-sectional view of the sintering furnace body and the heat insulation box of the utility model;

[0020] Figure 4 A cross-sectional view of the sintering furnace body and the heat insulation box from another perspective of the present invention;

[0021] Figure 5 It is a schematic diagram of the heat insulation component of the utility model;

[0022] Figure 6It is a schematic diagram of the feeding assembly of the utility model.

[0023] In the figure: 1. base; 2. sintering furnace body; 3. heat insulation box; 4. second heat insulation door; 5. heat insulation assembly; 51. first heat insulation door; 52. rotating rod; 53. first gear; 54. mounting vertical plate; 55. electric push rod; 56. push plate; 57. rack; 6. slide groove; 7. square groove; 8. feeding assembly; 81. threaded screw; 82. slider; 83. moving plate; 84. material box; 85. first bevel gear; 86. second bevel gear; 87. motor; 9. handle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides two technical solutions:

[0026] Figure 1-Figure 6 The first embodiment is shown: a high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration, comprising a base 1, a sintering furnace body 2 is fixedly mounted on the top of the base 1, an outer wall of the sintering furnace body 2 is fixedly connected to a heat insulation box 3 at one end, a second heat insulation door 4 is hingedly connected to the outer wall of the heat insulation box 3, a heat insulation component 5 is arranged inside the heat insulation box 3, and a feeding component 8 is arranged at the bottom end of the inner wall of the heat insulation box 3 and the sintering furnace body 2 for conveying materials;

[0027] The heat insulation assembly 5 includes two rotating rods 52, which are both rotatably mounted on the inner wall of the heat insulation box 3. The outer walls of the two rotating rods 52 are both fixedly sleeved with a first heat insulation door 51. The top ends of the two rotating rods 52 pass through the top end of the heat insulation box 3 and are both fixedly mounted with a first gear 53. When the first gear 53 rotates, the first heat insulation door 51 can be driven to rotate through the rotating rods 52. Through the mutual cooperation of the heat insulation box 3, the second heat insulation door 4 and the first heat insulation door 51, the heat loss of the sintering furnace body 2 is reduced, thereby reducing the heat loss of the sintering furnace body 2 when taking and feeding materials;

[0028] The feeding assembly 8 includes a threaded screw 81 , which is disposed inside the heat insulation box 3 .

[0029] A mounting vertical plate 54 is fixedly installed at the top of the heat insulation box 3, an electric push rod 55 is fixedly installed at one end of the outer wall of the mounting vertical plate 54, a push plate 56 is fixedly installed at the output end of the electric push rod 55, two racks 57 are symmetrically fixedly installed at one end of the outer wall of the push plate 56, the two racks 57 are respectively meshed with the two first gears 53, the electric push rod 55 is a prior art, and can drive the two racks 57 to extend and retract through the push plate 56, and the rack 57 drives the two first gears 53 to rotate in the opposite direction during the movement.

[0030] Figure 1-Figure 6 A second embodiment is shown, which mainly differs from the first embodiment in that a slide groove 6 is provided at the bottom end of the inner wall of the sintering furnace body 2 and the heat insulation box 3, a square groove 7 is provided at the bottom end of the inner wall of the heat insulation box 3, a threaded screw 81 is rotatably installed on the inner wall of the slide groove 6, one end of the outer wall of the threaded screw 81 penetrates the inner wall of the square groove 7, and a first bevel gear 85 is fixedly installed, a motor 87 is fixedly installed at the bottom end of the base 1, the output end of the motor 87 penetrates the inner wall of the square groove 7, and a second bevel gear 86 is fixedly installed, the second bevel gear 86 is meshed with the first bevel gear 85, the outer wall of the threaded screw 81 is threadedly connected with a slider 82, the slider 82 is movably inserted in the inner wall of the slide groove 6, and the top of the slider 82 A moving plate 83 is fixedly installed at the end, and the motor 87 drives the second bevel gear 86 to rotate, and the second bevel gear 86 then drives the first bevel gear 85 and the threaded screw 81 to rotate. The threaded screw 81 can drive the slider 82 and the moving plate 83 to move in the slide groove 6 during the rotation process, and transport the NdFeB magnet powder to the sintering furnace body 2, so that the NdFeB magnet powder can be quickly moved, reducing the probability of burns caused by manual touch and movement of the sintered NdFeB magnet powder. A group of material boxes 84 are fixedly installed on the top of the moving plate 83. When the moving plate 83 and the material box 84 are in the heat insulation box 3, they should be close to the second heat insulation door 4 to avoid the two first heat insulation doors 51 from colliding with it when rotating.

[0031] A handle 9 is fixedly mounted on one side of the outer wall of the second insulating door 4 , and the handle 9 facilitates the opening and closing of the second insulating door 4 . The insulating box 3 is fixedly connected to the base 1 .

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] During operation, when it is necessary to sinter and modify the NdFeB magnet powder, the NdFeB magnet powder and other modified powders are first mixed and put into the material box 84, and then pressed. After the placement is completed, the second insulation door 4 is closed, and then the electric push rod 55 is turned on. The electric push rod 55 is shortened, and the two racks 57 are driven to move toward the installation vertical plate 54 through the push plate 56. The two racks 57 respectively drive the two first gears 53 to rotate in the opposite direction when moving, and the two first gears 53 drive the two first insulation doors 51 to rotate in the opposite direction through the rotating rod 52, so that the two first insulation doors 51 rotate to the inside of the insulation box 3, and then the two first insulation doors 51 can be quickly opened. At this time, the motor 87 can be turned on, and the motor 87 drives the second bevel gear 86 to rotate, and the second bevel gear 86 then drives the first bevel gear 85 and the threaded screw 81 to rotate. The threaded screw 81 can drive the slider 82 and the moving plate 83 in the slide groove during the rotation process. 6 to transport the NdFeB magnet powder into the sintering furnace body 2. At this time, the electric push rod 55 is turned on again. The electric push rod 55 drives the two racks 57 to extend, and drives the two first insulation doors 51 to close the sintering furnace body 2 to prevent the heat loss of the sintering furnace body 2. Then the NdFeB magnet powder is sintered and modified in the sintering furnace body 2. Due to the provision of the insulation box 3, the second insulation door 4 and the first insulation door 51, the sintering furnace body 2 is not in direct contact with the outside air. Instead, the NdFeB magnet powder can be transported to the sintering furnace body 2 under the buffering in the insulation box 3, thereby greatly reducing the heat loss in the furnace, reducing energy consumption and saving costs. Similarly, when the NdFeB magnets in the sintering furnace body 2 need to be taken out, the heat loss of the sintering furnace body 2 can be reduced through the cooperation of the insulation box 3, the second insulation door 4 and the first insulation door 51, thereby reducing the heat loss of the sintering furnace body 2 when taking and feeding materials.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration, comprising a base (1), characterized in that: A sintering furnace body (2) is fixedly mounted on the top of the base (1); one end of the outer wall of the sintering furnace body (2) is fixedly connected to a heat insulation box (3); one end of the outer wall of the heat insulation box (3) is hingedly connected to a second heat insulation door (4); a heat insulation component (5) is arranged inside the heat insulation box (3); and a feeding component (8) is arranged at the bottom end of the inner wall of the heat insulation box (3) and the sintering furnace body (2) for conveying materials; The heat insulation assembly (5) comprises two rotating rods (52), the two rotating rods (52) are both rotatably mounted on the inner wall of the heat insulation box (3), the outer walls of the two rotating rods (52) are both fixedly sleeved with a first heat insulation door (51), the top ends of the two rotating rods (52) pass through the top end of the heat insulation box (3), and are both fixedly mounted with a first gear (53); The feeding assembly (8) comprises a threaded screw (81), and the threaded screw (81) is arranged inside the heat insulation box (3).

2. The high-performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration according to claim 1 is characterized in that: A mounting vertical plate (54) is fixedly mounted on the top of the heat insulation box (3); an electric push rod (55) is fixedly mounted on one end of the outer wall of the mounting vertical plate (54); a push plate (56) is fixedly mounted on the output end of the electric push rod (55); two racks (57) are symmetrically fixedly mounted on one end of the outer wall of the push plate (56); the two racks (57) are respectively meshed with the two first gears (53).

3. The high performance NdFeB magnet modification device for composite grain boundary diffusion metal infiltration according to claim 1 is characterized in that: The bottom ends of the inner walls of the sintering furnace body (2) and the heat insulation box (3) are provided with a slide groove (6), the bottom end of the inner wall of the heat insulation box (3) is provided with a square groove (7), and the inner wall of the slide groove (6) is rotatably mounted with a threaded screw (81).

4. The high performance NdFeB magnet modification device for composite grain boundary diffusion metallization according to claim 3 is characterized in that: One end of the outer wall of the threaded screw (81) penetrates the inner wall of the square groove (7) and is fixedly mounted with a first bevel gear (85); a motor (87) is fixedly mounted at the bottom end of the base (1); an output end of the motor (87) penetrates the inner wall of the square groove (7) and is fixedly mounted with a second bevel gear (86); the second bevel gear (86) is meshed with the first bevel gear (85).

5. The high performance NdFeB magnet modification device for composite grain boundary diffusion metallization according to claim 4 is characterized in that: The outer wall of the threaded screw rod (81) is threadedly connected with a slider (82), and the slider (82) is movably inserted into the inner wall of the slide groove (6). A moving plate (83) is fixedly installed on the top of the slider (82), and a group of material boxes (84) are fixedly installed on the top of the moving plate (83).

6. The high-performance NdFeB magnet modification device for composite grain boundary diffusion metalization according to claim 1 is characterized in that: A handle (9) is fixedly mounted on one side of the outer wall of the second heat-insulating door (4), and the heat-insulating box (3) is fixedly connected to the base (1).

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