Composite magnet sintering box

Abstract

The present invention provides a composite magnet sintering material box, which belongs to the field of magnet sintering technology and includes a shell, a cover, a first partition component, two types of second partition components, two types of third partition components, a fourth partition component, and a gas supply device. The middle portion of the shell is hollowed out to form two openings, and the cover covers the openings. The first partition component is slidably arranged on the cover along the length direction of the shell, and is extended along the width direction of the shell and provided with a first channel that can be opened and closed. The two types of second partition components are respectively extended along the height direction and length direction of the shell, and the two types of third partition components are respectively extended along the height direction and width direction of the shell. The fourth partition component is movably arranged at the corner of the cover. The gas supply device circulates protective gas at the first and second temperatures. The four partition components are synergistically connected and combined to form a sintering chamber including two types of fluid chambers. The present invention can control the sintering temperature difference between different magnetic materials and match composite magnets in various combinations.

Description

Technical Field

[0001] The present invention relates to the technical field of magnet sintering, in particular to a composite magnet sintering material box. Background Art

[0002] Sintered magnets, as an important branch of modern permanent magnet materials, are produced using powder metallurgy technology. With their excellent magnetic properties and mechanical characteristics, they are widely used in electronics, machinery, medical treatment, aerospace and other fields.

[0003] As the performance requirements for permanent magnets continue to increase in various applications, new composite magnet technologies that optimize performance through the combination of heterogeneous materials have become a research hotspot. For example, in a linear Halbach array, the magnet units require low-coercivity magnetic materials in the center, with high-coercivity materials arranged symmetrically on either side. This gradient coercivity distribution significantly improves overall magnetic field uniformity and energy efficiency.

[0004] However, in the actual preparation process, the composite magnet is usually placed in a sintering box, and then the sintering box is placed in a sintering furnace for heat treatment. However, due to the significant differences in the grain growth rate and densification process of different magnetic materials, the relatively uniform sintering temperature in the sintering furnace often cannot take into account the needs of each component. Specifically, low coercive force materials require relatively mild sintering conditions to avoid abnormal grain growth, while high coercive force materials require higher temperatures to achieve sufficient densification. This mismatch in thermodynamic parameters can easily lead to interfacial stress concentration, causing material cracking or microstructural defects, seriously affecting the mechanical integrity and magnetic performance stability of the composite magnet. In addition, for composite magnets with different combinations, it is usually necessary to replace the sintering box with the corresponding shape, but this will increase the process cost. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a composite magnet sintering box, which is designed to control the sintering temperature difference between different magnetic materials and match composite magnets in various combinations.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a composite magnet sintering box, comprising a shell, a cover, a first partition component, two types of second partition components, two types of third partition components, a fourth partition component, and a gas transmission device. The middle portion of the shell is hollowed out to form two openings arranged opposite to each other, and the cover is used to seal and cover the openings. The first partition component is slidably arranged on the cover along the length direction of the shell, the first partition component is extended along the width direction of the shell, and is provided with a first channel that can be opened and closed. The two types of second partition components are movably arranged on the side walls on both sides of the length direction of the shell. When working, the two types of second partition components are extended along the height direction and the length direction of the shell respectively. The two types of third partition components are The partition components are movably arranged on the side walls on both sides of the shell in the width direction. When working, the two types of third partition components are extended along the height direction and the width direction of the shell respectively. The fourth partition component is movably arranged at all corners of the two groups of covers. The gas supply device is used to circulate protective gases of a first temperature and a second temperature, and the first temperature is lower than the second temperature; wherein, the first partition component, the second partition component, the third partition component and the fourth partition component are cooperatively connected and combined to form a sintering chamber including two types of fluid chambers, the first type of fluid chamber is provided with at least two, and the protective gas of the first temperature is circulated, and the second type of fluid chamber is provided with one, and the protective gas of the second temperature is circulated.

[0007] In addition, the composite magnet sintering cartridge according to the present invention may also have the following additional technical features:

[0008] Furthermore, the first partition assembly includes a first partition, two groups of first heat conducting plates, and a first heat insulating plate. The first partition is slidably arranged on the cover and extends along the width direction of the shell. A first through hole is provided on the first partition. The two groups of the first heat conducting plates are detachably arranged on the first partition along the length direction of the first partition and arranged side by side along the width direction of the first partition. The first heat insulating plate is clamped between the two groups of the first heat conducting plates along the height direction of the shell to open and close the first through hole.

[0009] Furthermore, a first receiving groove is provided on the shell, and the first type of the second partition assembly and the first type of the third partition assembly both include a second partition, two groups of second heat conducting plates, a second heat insulating plate, and a first position adjustment mechanism. The second partition is slidably arranged on the shell, and when working, the second partition is extended along the height direction of the shell. The first position adjustment mechanism is used to control the second partition to move linearly along the width direction of the side wall corresponding to the shell, and to control the second partition to rotate to a position aligned with the length direction of the first receiving groove. The two groups of the second heat conducting plates are detachably arranged on the second partition along the length direction of the second partition, and are arranged side by side along the width direction of the second partition. The second heat insulating plate is clamped between the two groups of the second heat conducting plates.

[0010] The cam is connected to the first receiving groove of the first sliding post by the sliding groove, and the cam is connected to the first receiving groove by the sliding groove. The cam is adapted to engage the first end of the guide rail and engage with the second end of the guide rail when the cam is engaged with the first end of the guide rail, wherein the cam is adapted to engage with the first end of the guide rail when the cam is engaged with the first end of the guide rail.

[0011] Furthermore, the sliding assembly includes a guide rail, the guide rail matches the first receiving groove, and the second partition is slidably arranged on the guide rail through a slider.

[0012] Furthermore, the shell is provided with a second receiving groove which is offset from the first receiving groove, and the second receiving groove is adapted to the second type of the second partition assembly and the second type of the third partition assembly. The second type of the second partition assembly and the second type of the third partition assembly both include a third partition, two groups of third heat conducting plates, a third heat insulating plate, and a second position adjustment mechanism. The third partition is slidably arranged on the shell, and the two groups of the third partitions extend along the length direction and the width direction of the shell respectively. The second position adjustment mechanism is used to control the third partition to move linearly along the width direction of the side wall corresponding to the shell. The two groups of the third heat conducting plates are detachably arranged on the third partition along the length direction of the third partition and are arranged side by side along the width direction of the third partition. The third heat insulating plate is clamped between the two groups of the third heat conducting plates.

[0013] Furthermore, the shell is provided with a first special-shaped groove connected to the sintering chamber, and the shell is provided with a third through hole connected to the first special-shaped groove. The second position adjustment mechanism includes a second screw rod and a second sliding column. The second sliding column is movably arranged in the first special-shaped groove. One end of the second screw rod is sealed and passed through the third through hole and is connected to the center thread of the second sliding column. The other end of the second screw rod extends out of the first special-shaped groove. Second retaining rings are provided between the two side parts of the second screw rod located at the third through hole and the shell, and the end of the second sliding column is connected to the third partition.

[0014] Furthermore, a spring is provided between the middle portion of the arc-shaped stopper and the housing.

[0015] Furthermore, the cover is provided with a second special-shaped groove connected to the sintering chamber, the cover is provided with a fourth through hole connected to the second special-shaped groove, and the cover is provided with a third position adjustment mechanism, the third position adjustment mechanism includes a third screw rod and a third sliding column, the third sliding column is movably arranged in the second special-shaped groove, one end of the third screw rod is sealed through the fourth through hole and connected with the center thread of the third sliding column, the other end of the third screw rod extends out of the second special-shaped groove, and the third retaining ring is provided between the two side parts of the third screw rod located at the fourth through hole and the sealing cover, and the end of the third sliding column can be plugged into the second partition.

[0016] Furthermore, spoilers are arranged in an array on the surfaces of the first heat conducting plate, the second heat conducting plate and the third heat conducting plate at one end away from the composite magnet.

[0017] The beneficial effects of the present invention include at least: when the first channel is closed, the first separation component and the first type of second separation component can form a first type of sintering chamber; when the first channel is opened, the four groups of first separation components resist the upper and lower surfaces of the composite magnet, so that the second type of second separation component and the second type of third separation component can form a second type of sintering chamber; when the first channel is opened, the four groups of first separation components resist the upper and lower surfaces of the composite magnet, the first type of second separation component moves along the length direction of the shell until it moves to the corner in the length direction of the shell, and the first type of third separation component moves along the width direction of the shell until it moves to the corner in the width direction of the shell, thereby forming a third type of sintering chamber with the fourth separation component. Compared with the existing technology, it can match composite magnets of various combinations; at the same time, protective gases of different temperatures are circulated to different fluid cavities in different types of sintering chambers through the gas supply device, so as to achieve the purpose of controlling the sintering temperature difference between different magnetic materials, and ensure that the sintered composite magnet has good mechanical integrity and magnetic performance stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the composite magnet sintering cartridge in an embodiment of the present invention when sintering the first type of composite magnet;

[0019] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 Schematic diagram of the structure of the composite magnet sintering cartridge in an embodiment of the present invention when sintering a second type of composite magnet;

[0021] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0022] Figure 5 Schematic diagram of the structure of the composite magnet sintering cartridge in an embodiment of the present invention when sintering the third type of composite magnet;

[0023] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0024] Figure 7 Schematic diagram of the structure of the first position adjustment mechanism in an embodiment of the present invention;

[0025] Figure 8 is a structural schematic diagram of a second position adjustment mechanism in an embodiment of the present invention;

[0026] Figure 9 Schematic diagram of the structure of the third position adjustment mechanism in an embodiment of the present invention;

[0027] Figure 10 is another structural schematic diagram of the first type of composite magnet in an embodiment of the present invention;

[0028] Description of main component symbols:

[0029] Housing 100, first receiving groove 120, stepped circular groove 130, groove 131, arc-shaped block 132, spring 133, second through hole 140, second receiving groove 150, first special-shaped groove 160, third through hole 170, cover 200, second special-shaped groove 210, fourth through hole 220, third screw 231, third retaining ring 2311, third sliding column 232, first partition assembly 300, first partition plate 310, first heat conducting plate 320, first heat insulating plate 330, first through hole 331, second partition assembly 400, second partition plate 410, second heat conducting plate 420, second heat insulating plate 430, first screw 441, ferrule 4411, first retaining ring 4412, first sliding post 442, wedge 4421, conical head 4422, third partition assembly 500, third partition plate 510, third heat conducting plate 520, third heat insulating plate 530, second screw 541, second retaining ring 5411, second sliding post 542, fourth partition assembly 600, spoiler 700;

[0030] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Please refer to Figures 1 to 9 , a composite magnet sintering box provided by the present invention includes a shell 100, two sets of covers 200, a first partition component 300, two types of second partition components 400, two types of third partition components 500, a fourth partition component 600, and a gas delivery device (not shown in the drawings).

[0035] Specifically, the middle of the shell 100 is vertically hollowed out at the top and bottom, so that two openings are formed opposite to each other at the top and bottom of the shell 100. When sintering the composite magnet, the two sets of covers 200 seal and cover the openings at the top and bottom of the shell 100 respectively.

[0036] The first partition component 300 is slidably arranged on the cover 200 along the length direction of the shell 100. Specifically, the first partition component 300 is extended along the width direction of the shell 100. A group of first partition components 300 are provided on the left and right sides of the cover 200 at the top of the shell 100, and a group of first partition components 300 are provided on the left and right sides of the cover 200 at the bottom of the shell 100. The first partition component 300 is also provided with a first channel that can be opened and closed.

[0037] The two types of second separation components 400 are movably arranged on the side walls on both sides of the length direction of the shell 100. Specifically, a group of first-type second separation components 400 are provided on the left and right sides of each side wall, and a group of second-type second separation components 400 are provided on the upper and lower sides of each side wall. When sintering the composite magnet, the two types of second separation components 400 are extended along the height direction and the length direction of the shell 100, respectively.

[0038] The two types of third partition components 500 are movably arranged on the side walls on both sides of the width direction of the shell 100. Specifically, a group of first-type third partition components 500 are provided on the front and rear sides of each side wall, and a group of second-type third partition components 500 are provided on the upper and lower sides of each side wall. When sintering the composite magnet, the two types of third partition components 500 are extended along the height direction and width direction of the shell 100, respectively.

[0039] The fourth partitioning components 600 are movably disposed at the four corners of the two sets of covers 200 .

[0040] The gas delivery device is used to circulate shielding gas at a first temperature and a second temperature, wherein the first temperature is lower than the second temperature. For example, when using a gradient sintering method, at a certain stage of sintering, the first temperature is 1000 degrees Celsius and the second temperature is 1050 degrees Celsius. Optionally, the shielding gas can be helium, which is less reactive with other substances at high temperatures.

[0041] In this embodiment, the first channel is closed, and the first partition component 300 and the first type second partition component 400 form the following Figure 1The sintering chamber shown includes fluid chambers Q1 on the left and right sides and a fluid chamber Q2 in the middle. The fluid chamber Q1 corresponds to the A1 area of ​​the composite magnet, and the fluid chamber Q2 corresponds to the A2 area of ​​the composite magnet. During sintering, the gas supply device circulates a protective gas of the first temperature into the fluid chamber Q1 and circulates a protective gas of the second temperature into the fluid chamber Q2.

[0042] The first channel is opened, and the four groups of first separation components 300 are in contact with the upper and lower surfaces of the composite magnet, and the second type of second separation components 400 and the second type of third separation components 500 are formed as shown in FIG. Figure 3 The sintering chamber shown includes upper and lower fluid chambers Q3 and a central fluid chamber Q4. Fluid chamber Q3 corresponds to region A3 of the composite magnet, while fluid chamber Q4 corresponds to region A4 of the composite magnet. During sintering, a gas delivery device circulates protective gas at a first temperature into fluid chamber Q3 and protective gas at a second temperature into fluid chamber Q4. Neither the first-type second separator assembly 400 nor the first-type third separator assembly 500 contacts the surface of the composite magnet.

[0043] The first channel is opened, and the four groups of first separation components 300 are in contact with the upper and lower surfaces of the composite magnet. The first type of second separation components 400 move along the length direction of the shell 100 until they move to the corners of the length direction of the shell 100. The first type of third separation components 500 move along the width direction of the shell 100 until they move to the corners of the width direction of the shell 100, thereby forming a fourth separation component 600 as shown in FIG. Figure 5 The sintering chamber shown includes fluid chambers Q5 at the four corners and a central fluid chamber Q6. Fluid chambers Q5 correspond to region A5 of the composite magnet, and fluid chamber Q6 corresponds to region A6 of the composite magnet. During sintering, a gas delivery device circulates protective gas at a first temperature into fluid chambers Q5 and a second temperature into fluid chamber Q6. Neither the second-type second separator assembly 400 nor the second-type third separator assembly 500 contacts the surface of the composite magnet.

[0044] It should be noted that, in order to ensure that the composite magnet has better sintering efficiency, the shell 100 and the cover 200 are both made of graphene material.

[0045] In some optional embodiments, such as Figure 2As shown, the first partition assembly 300 includes a first partition plate 310, two sets of first heat conducting plates 320, and a first heat insulating plate 330. Specifically, the first partition plate 310 is slidably mounted on the cover 200. Optionally, a guide rail can be provided on the cover 200, and the first heat insulating plate 330 is slidably positioned on the guide rail. To prevent the first partition plate 310 from shifting, a damping component, such as a raised point to increase friction, can be provided between the guide rail and the first partition plate 310. The first partition 310 extends along the width of the housing 100 and is provided with a first through-hole 331. Two sets of first heat conducting plates 320 are detachably mounted on the first partition 310 along its length. The two sets of first heat conducting plates 320 are arranged side by side along the width of the first partition 310. A first heat insulating plate 330 is sandwiched between the two sets of first heat conducting plates 320 along the height of the housing 100. The first through-hole 331 can be opened and closed by moving the first heat insulating plate 330. It should be noted that to prevent heat transfer between the fluid chambers Q1 and Q2, both the first partition 310 and the first heat insulating plate 330 are made of a material with low thermal conductivity, such as nanofiber insulation material, alumina foam ceramic material, or other high-temperature resistant materials.

[0046] In this embodiment, two sets of first heat conducting plates 320 and one set of first heat insulating plates 330 are provided at the junction of the A1 region and the A2 region of the composite magnet, which can reduce the mutual influence of the high-temperature protective gas in the fluid chamber Q1 and the fluid chamber Q2. Since the high-temperature airflow cannot contact the contact area between the two when the first heat conducting plates 320 support the composite magnet, resulting in a large temperature difference, the first heat conducting plates 320 should be made of a material with good thermal conductivity, such as copper. In addition, the two sets of first heat conducting plates 320 can be detachably provided on the first partition 310, and the first heat conducting plates 320 and the first partition 310 of different shapes can be easily replaced to adapt to composite magnets with different shapes of the A1 region and the A2 region (such as Figure 1 and Figure 10 two composite magnets shown).

[0047] In some optional embodiments, such as Figure 7As shown, the housing 100 is provided with a first receiving slot 120. The first type second partition assembly 400 and the first type third partition assembly 500 both include a second partition plate 410, two sets of second heat conducting plates 420, a second heat insulating plate 430, and a first position adjustment mechanism. Specifically, the second partition plate 410 is slidably mounted on the housing 100. During sintering of the composite magnet, the second partition plate 410 extends along the height direction of the housing 100. The first position adjustment mechanism is used to control the linear movement of the second partition plate 410 along the width direction of the corresponding side wall of the housing 100 and to control the rotation of the second partition plate 410 to a position aligned with the length direction of the first receiving slot 120. The two sets of second heat conducting plates 420 are detachably mounted on the second partition plate 410 along the length direction of the second partition plate 410 and arranged side by side along the width direction of the second partition plate 410. The second heat insulating plate 430 is sandwiched between the two sets of second heat conducting plates 420. When the first type second partition component 400 and the first type third partition component 500 are in use, the second partition 410 is controlled by the first position adjustment mechanism to move linearly along the width direction of the side wall of the corresponding shell 100, so that the two groups of second heat conductive plates 420 on the second partition 410 contact the surface of the composite magnet. When the first type second partition component 400 and the first type third partition component 500 are not in use, the second partition 410 is controlled by the first position adjustment mechanism to move linearly in the opposite direction along the width direction of the side wall of the corresponding shell 100, so that the two groups of second heat conductive plates 420 on the second partition 410 are away from the surface of the composite magnet until they are embedded in the first receiving groove 120. In this way, the first type second partition component 400 and the first type third partition component 500 will not affect other partition components. It should be noted that in order to ensure that there is no heat transfer between the fluid chamber Q1 and the fluid chamber Q2, and between the fluid chamber Q5 and the fluid chamber Q6, the second partition plate 410 and the second thermal insulation plate 430 are both made of materials with low thermal conductivity, such as nanofiber insulation materials, alumina foam ceramic materials and other high-temperature resistant materials.

[0048] In this embodiment, two sets of second heat conducting plates 420 and one set of second heat insulating plates 430 are disposed at the junction of the composite magnet's A1 and A2 regions, and two sets of second heat conducting plates 420 and one set of second heat insulating plates 430 are disposed at the junction of the composite magnet's A5 and A6 regions. This can reduce the mutual influence of the high-temperature shielding gases in fluid chambers Q1 and Q2, as well as the mutual influence of the high-temperature shielding gases in fluid chambers Q5 and Q6. Because the high-temperature gas flow cannot reach the contact area between the two when the second heat conducting plates 420 contact the composite magnet, resulting in a large temperature difference, the second heat conducting plates 420 should be made of a material with excellent thermal conductivity, such as copper. Furthermore, both sets of second heat conducting plates 420 are detachably mounted on the second partition 410, allowing for convenient replacement of second heat conducting plates 420 and second partitions 410 of different shapes to accommodate composite magnets having different shapes in the A1 and A2 regions, as well as composite magnets having different shapes in the A5 and A6 regions.

[0049] In some optional embodiments, such as Figure 7 As shown, the housing 100 is provided with a stepped circular groove 130 connected to the sintering chamber, and a groove 131 is provided on the side wall of the small diameter end of the stepped circular groove 130. The large diameter end of the stepped circular groove 130 is connected to the first receiving groove 120. The housing 100 is provided with a second through hole 140 connected to the stepped circular groove 130. Specifically, the first position adjustment mechanism includes a first screw 441, a first sliding post 442, and a sliding assembly. The first sliding post 442 is movably arranged in the stepped circular groove 130, so that the first sliding post 442 can rotate in the stepped circular groove 130 and move linearly along the axial direction of the stepped circular groove 130. A wedge block 4421 that matches the groove 131 is provided on the side of the first sliding post 442. The shape of the wedge block 4421 after being attached to the first sliding post 442 matches the side wall profile of the small diameter end of the stepped circular groove 130, and a conical head 4422 is provided at one end of the first sliding post 442. One end of the first screw rod 441 is sealed and passed through the second through hole 140, and is connected to the center thread of the first sliding column 442. The other end of the first screw rod 441 extends outside the stepped circular groove 130. A ferrule 4411 is removably provided between the portion of the first screw rod 441 located outside the stepped circular groove 130 and the housing 100. A first retaining ring 4412 is provided between the portion of the first screw rod 441 located inside the stepped circular groove 130 and the housing 100. An arc-shaped stopper 132 is elastically and slidably provided on the sidewall of the large diameter end of the stepped circular groove 130, and is connected to the wedge block 4421. The conical head 4422 forms a wedge-shaped fit with the arc-shaped stopper 132. The second partition 410 is connected to the conical head 4422 via a sliding assembly, which is adapted to the first receiving groove 120.

[0050] In this embodiment, when using the first type second partition assembly 400 and the first type third partition assembly 500, the sleeve 4411 is installed first. When the first screw rod 441 is rotated, since the first screw rod 441 is axially limited on the shell 100 by the sleeve 4411 and the first retaining ring 4412, the first screw rod 441 cannot be pressed axially toward the sintering chamber side, and the wedge block 4421 is located between the groove 131 and the small diameter end of the stepped circular groove 130. The wedge block 4421 prevents the first sliding column 442 from rotating in the stepped circular groove 130, so that the conical head 4422 can move axially toward or away from the sintering chamber side along the stepped circular groove 130. After the conical head 4422 moves a preset distance along the axial direction of the stepped circular groove 130 toward the sintering chamber, the ferrule 4411 is removed and the first screw 441 is pressed, causing the conical head 4422 to push the arc-shaped block 132 radially outward, causing the arc-shaped block 132 to push the wedge 4421 and completely move the wedge 4421 into the groove 131. At this time, the wedge 4421 will not prevent the first sliding column 442 from rotating within the stepped circular groove 130. The first screw 441 drives the sliding assembly to rotate, and then drives the second partition 410 to rotate until the second partition 410 rotates to a position aligned with the first receiving groove 120. At the same time, in order to form fluid chambers Q5 and Q6, the second partition 410 can also move linearly along the length direction of the housing 100 through the sliding assembly.

[0051] In some optional embodiments, the sliding assembly includes a guide rail that matches the first receiving slot 120, and the second partition 410 is slidably mounted on the guide rail via a slider. To prevent the second partition 410 from shifting, a damping assembly, such as a raised point to increase friction, may be provided between the guide rail and the slider.

[0052] In some optional embodiments, such as Figure 7 As shown, a spring 133 is provided between the middle portion of the arcuate stopper 132 and the housing 100. By providing the spring 133, when the oppositely disposed arcuate stoppers 132 move away from each other in the radial direction, the spring 133 is stretched. When the conical head 4422 does not squeeze the arcuate stoppers 132, the elastic restoring force of the spring 133 causes the oppositely disposed arcuate stoppers 132 to gradually move closer together until they return to their initial positions.

[0053] In some optional embodiments, such as Figure 8As shown, the housing 100 is provided with a second receiving slot 150 that is offset from the first receiving slot 120. The second receiving slot 150 is adapted to the second type second partition assembly 400 and the second type third partition assembly 500. The second type second partition assembly 400 and the second type third partition assembly 500 each include a third partition plate 510, two sets of third heat conducting plates 520, a third heat insulating plate 530, and a second position adjustment mechanism. Specifically, the third partition plate 510 is slidably mounted on the housing 100. The two sets of third partition plates 510 extend along the length and width of the housing 100, respectively. The second position adjustment mechanism is used to control the linear movement of the third partition plate 510 along the width direction of the corresponding side wall of the housing 100. The two sets of third heat conducting plates 520 are detachably mounted on the third partition plate 510 along the length direction of the third partition plate 510. The two sets of third heat conducting plates 520 are arranged side by side along the width direction of the third partition plate 510, and the third heat insulating plate 530 is sandwiched between the two sets of third heat conducting plates 520. It should be noted that in order to ensure that there is no heat transfer between the fluid chamber Q3 and the fluid chamber Q4, the third partition plate 510 and the third heat insulation plate 530 are both made of materials with low thermal conductivity, such as nanofiber insulation materials, alumina foam ceramic materials and other high-temperature resistant materials.

[0054] In this embodiment, two sets of third heat conducting plates 520 and one set of third heat insulating plates 530 are positioned at the junction of the composite magnet's A3 and A4 regions. This reduces the interaction between the high-temperature shielding gases in the fluid chambers Q3 and Q4. When the third heat conducting plates 520 contact the composite magnet, the high-temperature gas flow cannot reach the contact area between the two, resulting in a significant temperature difference. Therefore, the third heat conducting plates 520 should be made of a material with excellent thermal conductivity, such as copper. Furthermore, both sets of third heat conducting plates 520 are detachably mounted on the third separator 510, allowing for easy replacement of third heat conducting plates 520 and third separators 510 with different shapes to accommodate composite magnets with different A3 and A4 regions.

[0055] In some optional embodiments, such as Figure 8As shown, the housing 100 is provided with a first special-shaped groove 160 that communicates with the sintering chamber, and a third through-hole 170 that communicates with the first special-shaped groove 160. The second position adjustment mechanism includes a second screw rod 541 and a second sliding post 542. The second sliding post 542 is movably disposed within the first special-shaped groove 160. Due to the axial restraining effect of the first special-shaped groove 160 on the second screw rod 541, the second sliding post 542 can only move linearly along the axial direction of the first special-shaped groove 160. One end of the second screw rod 541 is sealed through the third through-hole 170 and is threadedly connected to the center of the second sliding post 542. The other end of the second screw rod 541 extends outside the first special-shaped groove 160. Second retaining rings 5411 are provided on both sides of the second screw rod 541 between the third through-hole 170 and the housing 100, thereby completely restraining the second screw rod 541 in the axial direction of the housing 100. In addition, the end of the second sliding post 542 is connected to the third partition plate 510. In this embodiment, when the second screw rod 541 is rotated, since the second screw rod 541 is completely axially limited on the shell 100 and the second sliding column 542 cannot rotate in the first special-shaped groove 160, the second sliding column 542 will move in an axial straight line along the first special-shaped groove 160, thereby causing the third partition 510 to move away from and closer to the composite magnet in the sintering chamber.

[0056] In some optional embodiments, such as Figure 9As shown, the cover 200 is provided with a second special-shaped groove 210 communicating with the sintering chamber, the cover 200 is provided with a fourth through-hole 220 communicating with the second special-shaped groove 210, and the cover 200 is provided with a third position adjustment mechanism, which includes a third screw rod 231 and a third sliding post 232. The third sliding post 232 is movably disposed in the second special-shaped groove 210. Due to the axial limiting effect of the second special-shaped groove 210 on the third screw rod 231, the third sliding post 232 can only move in a straight line along the axial direction of the second special-shaped groove 210. One end of the third screw rod 231 is sealed and passed through the fourth through hole 220 and is connected to the center thread of the third sliding column 232. The other end of the third screw rod 231 extends out of the second special-shaped groove 210. The third screw rod 231 is located between the two side parts of the fourth through hole 220 and the shell 100. A third retaining ring 2311 is provided, so that the third screw rod 231 is completely axially limited on the cover 200. In addition, the end of the third sliding column 232 can be plugged into the corresponding second partition 410. In this embodiment, when the third screw rod 231 is rotated, since the third screw rod 231 is completely axially limited on the cover 200 and the third sliding column 232 cannot rotate in the second special-shaped groove 210, the third sliding column 232 will move in an axial straight line along the second special-shaped groove 210, thereby making the third sliding column 232 move away from and close to the composite magnet in the sintering chamber. When the third sliding column 232 gradually approaches the composite magnet in the sintering chamber, the end of the third sliding column 232 is plugged into the corresponding second partition 410, thereby surrounding a plurality of fluid chambers Q5.

[0057] In some optional embodiments, such as Figure 2 、 Figure 4 、 Figure 6 As shown, spoiler blocks 700 are arranged in an array on the surfaces of the first, second, and third heat conducting plates 320, 420, and 520 at the ends away from the composite magnet. The spoiler blocks 700 increase the turbulence at the first, second, and third heat conducting plates 320, 420, and 520, allowing the high-temperature shielding gas to be fully heated in the areas where the first, second, and third heat conducting plates 320, 420, and 520 contact the composite magnet, thereby reducing the temperature difference between these areas and other corresponding areas.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] The above-described embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of the present invention. Therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A composite magnet sintering box, characterized in that: The composite magnet sintering box comprises: The shell is hollowed out in the middle to form two openings opposite to each other; A sealing cover, used for sealing and covering the opening; A first partition assembly is slidably mounted on the cover along the length direction of the shell, the first partition assembly extends along the width direction of the shell, and is provided with a first channel that can be opened and closed; Two types of second partition components are movably arranged on the side walls on both sides of the shell in the length direction. When in operation, the two types of second partition components are respectively extended along the height direction and the length direction of the shell; Two types of third partition components are movably arranged on the side walls on both sides of the shell in the width direction. When in operation, the two types of third partition components are respectively extended along the height direction and the width direction of the shell; a fourth partition assembly, movably disposed at all corners of the two sets of covers; A gas delivery device, configured to circulate and deliver protective gas at a first temperature and a second temperature, wherein the first temperature is lower than the second temperature; The first partition assembly, the second partition assembly, the third partition assembly, and the fourth partition assembly are cooperatively connected to form a sintering chamber comprising two types of fluid chambers, wherein at least two of the first type of fluid chambers are provided and a protective gas at a first temperature circulates therethrough, and the second type of fluid chamber is provided with one and a protective gas at a second temperature circulates therethrough. The first partition assembly includes a first partition, two groups of first heat conducting plates, and a first heat insulating plate. The first partition is slidably mounted on the cover and extends along the width direction of the shell. A first through hole is provided on the first partition. The two groups of first heat conducting plates are detachably mounted on the first partition along the length direction of the first partition and are arranged side by side along the width direction of the first partition. The first heat insulating plate is sandwiched between the two groups of first heat conducting plates along the height direction of the shell to open and close the first through hole. The shell is provided with a first receiving groove, and the first type of the second partition assembly and the first type of the third partition assembly both include a second partition, two groups of second heat conducting plates, a second heat insulating plate, and a first position adjustment mechanism. The second partition is slidably arranged on the shell, and when working, the second partition is extended along the height direction of the shell. The first position adjustment mechanism is used to control the second partition to move linearly along the width direction of the side wall corresponding to the shell, and to control the second partition to rotate to a position aligned with the length direction of the first receiving groove. The two groups of the second heat conducting plates are detachably arranged on the second partition along the length direction of the second partition, and are arranged side by side along the width direction of the second partition. The second heat insulating plate is clamped between the two groups of the second heat conducting plates.

2. The composite magnet sintering cartridge according to claim 1, characterized in that: The cam is secured to the first support frame and is adapted to engage with the first support member when the cam is engaged. The cam is adapted to engage the first end of the guide rail and engage with the second end of the guide rail when the cam is engaged with the first end of the guide rail, and the cam is adapted to engage with the first end of the guide rail when the cam is engaged with the first end of the guide rail.

3. The composite magnet sintering cartridge according to claim 2, characterized in that: The sliding assembly includes a guide rail, the guide rail matches the first receiving groove, and the second partition is slidably arranged on the guide rail through a slider.

4. The composite magnet sintering cartridge according to claim 1, characterized in that: The shell is provided with a second receiving groove which is offset from the first receiving groove. The second receiving groove is adapted to the second type of second partition assembly and the second type of third partition assembly. The second type of second partition assembly and the second type of third partition assembly both include a third partition, two groups of third heat conducting plates, a third heat insulating plate, and a second position adjustment mechanism. The third partition is slidably arranged on the shell. The two groups of the third partitions extend along the length direction and the width direction of the shell respectively. The second position adjustment mechanism is used to control the third partition to move linearly along the width direction of the side wall corresponding to the shell. The two groups of the third heat conducting plates are detachably arranged on the third partition along the length direction of the third partition and are arranged side by side along the width direction of the third partition. The third heat insulating plate is sandwiched between the two groups of the third heat conducting plates.

5. The composite magnet sintering cartridge according to claim 4, characterized in that: The shell is provided with a first special-shaped groove connected with the sintering chamber, and the shell is provided with a third through hole connected with the first special-shaped groove. The second position adjustment mechanism includes a second screw rod and a second sliding column. The second sliding column is movably arranged in the first special-shaped groove. One end of the second screw rod is sealed and passed through the third through hole and is connected with the center thread of the second sliding column. The other end of the second screw rod extends out of the first special-shaped groove. Second retaining rings are provided between the two side parts of the second screw rod located at the third through hole and the shell, and the end of the second sliding column is connected to the third partition.

6. The composite magnet sintering cartridge according to claim 2, characterized in that: A spring is provided between the middle portion of the arc-shaped stopper and the housing.

7. The composite magnet sintering cartridge according to any one of claims 4 to 6, characterized in that: The cover is provided with a second special-shaped groove connected with the sintering chamber, the cover is provided with a fourth through hole connected with the second special-shaped groove, the cover is provided with a third position adjustment mechanism, the third position adjustment mechanism includes a third screw rod and a third sliding column, the third sliding column is movably arranged in the second special-shaped groove, one end of the third screw rod is sealed and passed through the fourth through hole and is connected with the center thread of the third sliding column, the other end of the third screw rod extends out of the second special-shaped groove, and the third retaining ring is provided between the two side parts of the third screw rod located at the fourth through hole and the sealing cover, and the end of the third sliding column can be plugged into the second partition.

8. The composite magnet sintering cartridge according to claim 4, characterized in that: The surfaces of the first heat conducting plate, the second heat conducting plate and the third heat conducting plate at one end away from the composite magnet are provided with spoilers in an array.

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