CN200986854Y - Aeolotropism cementing rare-earth permanent magnet orientation forming device - Google Patents
Aeolotropism cementing rare-earth permanent magnet orientation forming device Download PDFInfo
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- CN200986854Y CN200986854Y CN 200620021549 CN200620021549U CN200986854Y CN 200986854 Y CN200986854 Y CN 200986854Y CN 200620021549 CN200620021549 CN 200620021549 CN 200620021549 U CN200620021549 U CN 200620021549U CN 200986854 Y CN200986854 Y CN 200986854Y
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Abstract
An orientation-forming device for anisotropy rare earth permanent magnet relates to the orientation-forming device for rare earth permanent magnet. In order to resolve the problem that ideal demagnetization is hard to obtain in orientation of the magnetic field by prior technique, the utility model comprises an upper plunger (1), a bottom plunger (2), a mode sleeve (3), a coil (4) and a power supply (5). The lower part of the upper plunger and the upper part of the bottom plunger are arranged in the upper part and the lower part of the mode sleeve. The coil winding of the mode sleeve is connected with two cable ends of the power supply. A surging sine magnetic field is formed when current generated by the power supply flows into the coil. The surging sine magnetic field produced by the coil of the utility model is capable of accomplishing two processes including magnetic field orientation and ideal demagnetization. The mixture of the magnet alloy powder and the binding resinous is compressed and molded after orientation in the surging sine magnetic field. The process of the demagnetization is not required after orientation and molding. The costs will be reduce and the anisotropy rare earth permanent magnet with good property will be produced.
Description
Technical field
The utility model relates to the oriontation shaping device of anisotropic rare earth permanent magnet body.
Background technology
Current anisotropic permanent magnet roughly is divided into sintered magnet and bonded permanent magnet, need be with powder through magnetic field orientating and compression forming when making above-mentioned permanent magnet.One of main manufacture of anisotropic bonded permanent magnet is by in the magnetic field orientating compression molding device mixture compression forming of magnet alloy powder and polymer or other binding agent being made.
The formation of the magnetic anisotropy of anisotropic bonded magnet obtains being orientated in the pressing under magnetic field operation by the anisotropy magnet powder and finishes, and, need material not have remanent magnetism in the magnetic material manufacture process, so after the anisotropic material orientation, must demagnetize fully, this is a difficult problem; Therefore, the anisotropic magnet powder is orientated in the pressing under magnetic field process and the quality of demagnetizing directly influences the magnetic characteristic and the production efficiency of bonded permanent magnet.
As current high performance anisotropy permanent magnet, rare earth magnet has shown good magnetic characteristic, and particularly the anisotropic rare earth permanent magnet body has more superiority and uses widely and market prospects.At present, the anisotropic rare earth permanent magnet body can't carry out industrial-scale production; Wherein reason is except that the manufacturing technology that is subjected to the anisotropic rare earth permanent magnet magnetic and maturity influence, the immature of moulding process and relevant device technology also is the factor that the large-scale production of restriction anisotropic rare earth permanent magnet body is made, and wherein the demagnetization technology after magnetic field orientating and the orientation is crucial especially.
When from the magnetic field orientating compression molding device, taking out the formed body that does not obtain desirable demagnetization, the remanent magnetism of formed body can make the demoulding trouble that becomes, simultaneously, formed body can be attracted each other each other and be sticked together, being scattered in die cavity Magnaglo on every side also can be powerful attached on the formed body, this can produce big obstacle to later operation, causes production efficiency low; Severeer is, if on bonded permanent magnet residual stronger remanent magnetism, the hot curing operation can make the formed body magnetic energy product descend even distortion and can't using.In addition, because these rare-earth magnetics have higher coercive force, alignment magnetic field is strong more, then remanent magnetism is strong more, and reunion and bridge joint phenomenon are serious more, also can directly influence the raising of the degree of orientation, simultaneously, the magnetic bridge joint can influence the even filling of magnet powder and cause bigger space, makes that the formed body density after the compacting reduces, and can not obtain high magnetic property; The demagnetization problem is a known difficult problem.
For removing the remanent magnetism after orientation is magnetized, the current method that generally adopts is to apply the dc magnetization field opposite with the magnet remanence direction or alternation decay magnetic field makes formed body be demagnetized, but needing repeatedly examination repeatedly to move back just, the former can reduce these remanent magnetism, sometimes not only can not reduce remanent magnetism, cause reciprocal magnetization on the contrary; The latter for the rare earth permanent-magnetic material of all kinds of high-coercive forces, does not reach the purpose that makes formed body be able to complete degaussing because general technology can't provide the demagnetizing field of enough intensity, wave number and lapse rate.For example, the publication number that SUMITOMO CHEMICAL particulate metal Co., Ltd. proposes is the permanent magnet manufacture method and the pressure setting of publicity in the CN 1488154A patent, it is for fear of the problem that produces owing to residual magnetization, it is very low that the intensity of alignment magnetic field is provided with, maximum is no more than 120KA/m, therefore, can not obtain the high degree of orientation, effect is undesirable.
The utility model content
For solving prior art can not obtain desirable demagnetization when finishing magnetic field orientating problem, the utility model provides a kind of anisotropic rare earth permanent magnet body oriontation shaping device, it can provide the magnetic field intensity of high-orientation, can avoid the problem that produces owing to residual magnetization again.The utility model comprises patrix drift 1, counterdie drift 2, die sleeve 3, coil 4 and current source 5, the upper end of the lower end of patrix drift 1 and counterdie drift 2 places the upper and lower in the die sleeve 3 respectively, the outer felt of described die sleeve 3 is wound with coil 4, the two ends of described coil 4 are connected with two terminals of current source 5 respectively, and the electric current that current source 5 produces is passed into and forms pure oscillation amount of decrease magnetic field in the coil 4.Current source 5 described in the utility model is made up of the pulse power 51, the first mutual inductance solenoid 52, first capacitor 53, the described first mutual inductance solenoid 52 is made up of the first primary coil 52-1 and the first secondary coil 52-2, the first and last end of the first primary coil 52-1 connects two outputs of the pulse power 51 respectively, and the end of the first secondary coil 52-2 is connected with an end of first capacitor 53; The two ends of coil 4 are connected with the other end of the first secondary coil 52-2 and the other end of first capacitor 53 respectively; Described current source 5 can also be by DC power supply 54, second mutual inductor 55, main switch K1, the short switch K2 and second capacitor 56 are formed, second mutual inductor 55 is to be wound on the hollow mutual inductor that forms together by the second primary coil 55-1 and second subprime coil 55-2, an output of DC power supply 54 connects the end of main switch K1, the other end of main switch K1 connects the end of the second primary coil 55-1 and the end of short switch K2, the other end of short switch K2 connects the other end of DC current source and the other end of the second primary coil 55-1, and the first and last end of second subprime coil 55-2 connects the two ends of second capacitor 56 respectively; Coil 4 is connected in parallel on the two ends of second capacitor 56.
The pure oscillation amount of decrease magnetic field that coil 4 described in the utility model produces, can finish magnetic field orientating and two processes of desirable demagnetization simultaneously, make the mixture of magnet alloy powder in die sleeve 3 and binding resin be compressed moulding after the orientation under this pure oscillation amount of decrease magnetic field, simultaneously, this pure oscillation amount of decrease magnetic field need decay to zero, needn't carry out the demagnetization operation behind the oriented moulding, the surperficial remanent magnetic flux density of oriented moulding aftershaping body is below 3 Gausses; Simultaneously, the Unit Weight density and the uniformity of formed body all increase, this not only can improve magnetic characteristic, and can suppress the inside that oxygen etc. invades bonded permanent magnet, thereby improve the thermal endurance and the long-term permanent magnetic ratio that reduces of bonded permanent magnet, anisotropic rare earth permanent magnet body that can low-cost manufacturing property excellence.
Description of drawings
Fig. 1 is pure oscillation amount of decrease field waveform figure described in the utility model, Fig. 2 is an overall structure schematic diagram of the present utility model, Fig. 3 is the structural representation of embodiment two, and Fig. 4 is the structural representation of embodiment three, and Fig. 5 is the structural representation of embodiment four; Fig. 6 is to use embodiment one, two, the anisotropic bond rare earth magnet of three and four several main shapes of making, Fig. 7 is the structural representation of embodiment five, Fig. 8 is to use the anisotropic bond rare earth magnet of several main shapes of embodiment five manufacturings, Fig. 9 is the structural representation of embodiment six, the ring-type anisotropic bond rare earth magnet that Figure 10 is to use embodiment six to make, Figure 11 is the structural representation of embodiment seven, Figure 12 is the A-A cutaway view of Figure 11, the radial multi-pole orientation anisotropic rare earth permanent magnet ring that Figure 13 is to use embodiment seven to make.(direction shown in the filled arrows is a pressing direction in each accompanying drawing, and direction shown in the hollow arrow is the magnetic aligning direction).
Embodiment
Embodiment one: (referring to Fig. 1, Fig. 2, Fig. 6) present embodiment is made up of patrix drift 1, counterdie drift 2, die sleeve 3, coil 4 and current source 5, the upper end of the lower end of patrix drift 1 and counterdie drift 2 places the upper and lower in the die sleeve 3 respectively, the outer felt of described die sleeve 3 is wound with coil 4, the two ends of described coil 4 are connected with two terminals of current source 5 respectively, and the electric current that current source 5 produces is passed into and forms pure oscillation amount of decrease magnetic field in the coil 4.
Embodiment two: the difference of (referring to Fig. 3) present embodiment and embodiment one is that it also comprises the 3rd electric capacity 6 and No. nine coils 7, described No. nine coils 7 are arranged between the interior winding face of the face of cylinder of die sleeve 3 and coil 4, and No. nine coils 7 and the 3rd electric capacity 6 form closed-loop paths; Described current source 5 is pulse powers.Other composition is identical with embodiment one with annexation.
Embodiment three: the difference of (referring to Fig. 4) present embodiment and embodiment one is that described current source 5 is made up of the pulse power 51, the first mutual inductance solenoid 52, first capacitor 53, the described first mutual inductance solenoid 52 is made up of the first primary coil 52-1 and the first secondary coil 52-2, the first and last end of the first primary coil 52-1 connects two outputs of the pulse power 51 respectively, and the end of the first secondary coil 52-2 is connected with an end of first capacitor 53; The two ends of coil 4 are connected with the other end of the first secondary coil 52-2 and the other end of first capacitor 53 respectively.Other composition is identical with embodiment one with annexation.
Embodiment four: (referring to Fig. 5) present embodiment and embodiment one or twos' difference is that described current source 5 is by DC power supply 54, second mutual inductor 55, main switch K1, the short switch K2 and second capacitor 56 are formed, second mutual inductor 55 is to be wound on the hollow mutual inductor that forms together by the second primary coil 55-1 and second subprime coil 55-2, an output of DC power supply 54 connects the end of main switch K1, the other end of main switch K1 connects the end of the second primary coil 55-1 and the end of short switch K2, the other end of short switch K2 connects the other end of DC current source and the other end of the second primary coil 55-1, and the first and last end of second subprime coil 55-2 connects the two ends of second capacitor 56 respectively; Coil 4 is connected in parallel on the two ends of second capacitor 56.Other composition is identical with embodiment one or two with annexation.
To embodiment four, the magnetic field orientating direction is parallel with pressing direction in embodiment one, can make cylindric or block and anisotropic bond permanent magnet (as shown in Figure 6) such as sheet, watt shape, ring-type by above-mentioned execution mode.Annular magnet among Fig. 6 can be inserted plug up and down in the central authorities of cylindric molding space, because orientation principle is identical with mode, does not give unnecessary details and illustrates at this.
Embodiment five: (referring to Fig. 7, Fig. 8) present embodiment and embodiment one, two or threes' difference is that described coil 4 forms by two, be respectively a coil 4-1 and No. two coil 4-2, coil 4-1 and No. two coil 4-2 are separately positioned on the both sides of die sleeve 3, two coil first and last ends link to each other respectively and are connected with two terminals of current source 5 respectively, and magnetic direction unanimity and described magnetic direction that two coils form are vertical with the pressing direction of permanent magnet.Other composition is identical with embodiment one, two or three with annexation.The magnetic field orientating direction of coil inside is vertical with the direction of action of last low punch in the present embodiment, do not need to consider repeatedly orientation, preferred orientation number of times is to get final product for 2-3 time, thus anisotropic rare earth permanent magnet body that can higher production efficiency acquisition high-orientation.Figure 8 shows that the anisotropic bonded magnet that uses several main shape that present embodiment can make and direction of orientation (during use along this direction magnetization), wherein annular magnet can be used for the two poles of the earth magnetization use, as stator magnet, can replace the stator magnet of the bipolar magnetic tile structure DC electromotor with brush of current market mainstream application as DC electromotor with brush.
Embodiment six: (referring to Fig. 9, Figure 10) present embodiment and embodiment one, two or three difference is that it also comprises plug 21 and following plug 23, patrix drift 1 and counterdie drift 2 are tubular, last plug 21 and following plug 23 are separately positioned in patrix drift 1 and the counterdie drift 2, described coil 4 is formed by two, be respectively No. three coil 4-3 and No. four coil 4-4, No. three coil 4-3 and No. four coil 4-4 go up respectively, be arranged on the outside of die sleeve 3 down, two coil first and last ends link to each other respectively and are connected with two terminals of current source 5 respectively, and the transient magnetic field direction that two coils form relatively and be parallel to each other and in the magnetic field of two magnetic field intersections formation radial radiations.Other composition is identical with embodiment one, two or three with annexation.No. three coil 4-3 and No. four coil 4-4 described in the present embodiment around to identical, then two coil first and last ends link to each other and are connected with two terminals of current source 5 respectively; Described No. three coil 4-3 and No. four coil 4-4 around on the contrary, then two first head ends of coil link to each other and are connected with two terminals of current source 5 respectively.Can form the magnetic field of radial radiation two magnetic field intersections.The connected mode of above-mentioned coil belongs to parallel way.Also can adopt the mode of being connected in series, if promptly described No. three coil 4-3 and No. four coil 4-4 around to identical, then two coil first and last ends series connection backs are connected with two terminals of current source 5; If described No. three coil 4-3 and No. four coil 4-4 around on the contrary, then two the first head ends series connection of coil backs are connected with two terminals of current source 5.The outer circumference surface of the inner peripheral surface of die sleeve 3 and last plug 21 and following plug 23 forms the tubular molding space, going up plug 21 and patrix drift 1 and No. three coil 4-3 during compacting moves downward jointly, following plug 23 and counterdie drift 2 and No. four coil 4-4 move upward jointly and carry out two-way compacting, to guarantee that alignment magnetic field keeps symmetrically in pressing process.Method for alignment in the present embodiment is identical with execution mode two with step.Because the magnetic field orientating direction is vertical with pressing direction in the present embodiment, do not need to consider repeatedly orientation, preferred orientation number of times is get final product for 2-4 time, thereby radial radiation that can higher production efficiency acquisition high-orientation is orientated the anisotropic rare earth permanent magnet ring.This permanent-magnetic clamp can radially be magnetized into the permanent-magnetic clamp of surperficial same polarity or any multi-pole magnet-ring that comprises the oblique utmost point of opposed polarity.Figure 10 shows that the radially oriented anisotropic bond rare earth magnetic (getting final product along this direction magnetization during use) that uses present embodiment to make.
Embodiment seven: the difference of (referring to Figure 11, Figure 12, Figure 13) present embodiment and embodiment six is that it comprises that also the radial multi-pole oriented coils that is arranged on die sleeve 3 outsides twines body 22, it is a cylindrical sleeve that the radial multi-pole oriented coils twines body 22, this cylindrical sleeve inner surface has many even numbers groove, constitute pole shoe between the adjacent groove, be wound with a coil on each pole shoe, a plurality of coil first and last ends are connected successively, and a plurality of coil becomes series loop with two group of terminals of current source 5.Other composition is identical with embodiment six with annexation.
Present embodiment can be made the radially multipole bonding rare earth magnet ring of the extremely above orientation of four utmost points orientation and four, below is a radially example of four utmost points orientation.
As shown in figure 12, the radial multi-pole oriented coils twines body 22 and has four grooves, No. five coil 4-5, No. six coil 4-6, No. seven coil 4-7 and No. eight coil 4-8 are wrapped in respectively on four pole shoes, No. five coil 4-5, No. six coil 4-6, No. seven coil 4-7 and No. eight coil 4-8 first and last ends are connected successively, and a plurality of coil becomes series loop with two group of terminals of current source 5.Other composition is identical with embodiment five with annexation.Above-mentioned a plurality of coil also can be formed the shunt circuit with two terminals of current source 5, and promptly No. five coil 4-5, No. six coil 4-6, No. seven coil 4-7 and No. eight coil 4-8 first and last ends are in parallel successively, form the shunt circuit with two terminals of current source 5.Figure 13 shows that the radial multi-pole orientation anisotropic rare earth permanent magnet ring (getting final product along this direction magnetization during use) that uses present embodiment to make.The magnetic field orientating direction is vertical with pressing direction in the present embodiment, preferably is orientated number of times and is 2-4 time and get final product, thereby can higher production efficiency obtain the radial multi-pole orientation anisotropic rare earth permanent magnet ring of high-orientation, and not compared by axle/footpath size to limit.
Use anisotropic rare earth permanent magnet body oriontation shaping device described in the utility model to process, can be undertaken: at first, the mixture of quantitative anisotropy magnet powder and binding agent and other additives is filled in the die cavity space by following step; Fall the patrix drift, stopped up under the pine dress state of die cavity upper end open orientation at the patrix drift 1 time, this moment, powder particle can more easily rotate, and therefore can obtain the sufficiently high degree of orientation, did not need too high field intensity to prove effective; Then, the patrix drift moves down, make powder particle by compacting slightly, apply orientation again 1 time, the intensity of alignment magnetic field should be able to make because the powder particle reunion that the residual remanent magnetism after being orientated for the 1st time causes is broken, and do not have crosslinkedly, at this moment the magnetic powder after the orientation is in magnetic virgin state, and the degree of orientation obtains further to improve; At last, last low punch carries out two-way compacting simultaneously, can apply orientation again 1-2 time in the process of compacting, thereby obtains the anisotropic rare earth permanent magnet body of high-orientation.
Above-mentioned sinusoidal amount of decrease alignment magnetic field is the magnetic field (promptly each orientation has been implemented the continuous orientation process of repetitious both forward and reverse directions) that comprises several pure oscillation amount of decrease magnetic fields, whenever applies once above-mentioned magnetic field and promptly is considered as orientation once.In the process of compression moulding, repeatedly orientation can further increase the degree of orientation, but can bring the cycle stretch-out of compression moulding operation, reduces production efficiency.Orientation number of times of the present utility model can according to pressing direction and direction of orientation is perpendicular or parallel be set at 1-6 time, is preferably 1-3 time.The orientation number of times that is parallel to pressing direction should be more than the orientation number of times of vertical direction.
Oriontation shaping device described in the utility model can be the Nd-Fe-B material applicable to the magnetic powder of making the anisotropy rare earth-like bonded permanent magnet, it also can be the Nd-Fe-B based material, or contain the rare-earth-type material that other add element, such as the mixture of Sm-Fe-N system, SmCo system and Nd-Fe-B system and above-mentioned material; The employed polymer of the utility model or other binding agent can be known resinous materials, are thermosetting resin or such as nylon based thermoplastic synthetic resin such as epoxy, and the polymer of other similar effects or binding agent.The cooperation ratio of above-mentioned magnetic powder and binding agent can be used by known cooperation ratio, can also use other additive, such as plasticizer, lubricant and antioxidant, surface conditioning agent etc.
Set forth the cold compression molding mode in the execution mode of the present utility model, cooperated the pure oscillation amount of decrease magnetic field orientating generating means that the utility model proposes also can be applied in other molding mode such as method and thermoforming process such as injection moulding, extrusion molding.
Magnetic field orientating shaped device in the permanent magnet manufacturing equipment that the utility model provides also can be used for the magnetic field orientating moulding of anisotropic bond ferrite permanent-magnet materials.Because the coercive force of Ferrite Material is lower, does not need too high peak value field intensity and frequency during magnetic field orientating, can makes these anisotropic bond ferrite permanent-magnet materials more easily and reduce production costs; And further improved the magnetic property of anisotropic bond ferrite permanent-magnet materials.Use needs all in protection range of the present utility model as long as satisfy.
Claims (7)
1, anisotropic rare earth permanent magnet body oriontation shaping device, it is characterized in that it comprises patrix drift (1), counterdie drift (2), die sleeve (3), coil (4) and current source (5), the upper end of the lower end of patrix drift (1) and counterdie drift (2) places the upper and lower in the die sleeve (3) respectively, the outer felt of described die sleeve (3) is wound with coil (4), the two ends of described coil (4) are connected with two terminals of current source (5) respectively, and the electric current that current source (5) produces is passed into and forms pure oscillation amount of decrease magnetic field in the coil (4).
2, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that it also comprises the 3rd electric capacity (6) and No. nine coils (7), described No. nine coils (7) are arranged between the interior winding face of the face of cylinder of die sleeve (3) and coil (4), and No. nine coils (7) form the closed-loop path with the 3rd electric capacity (6); Described current source (5) is the pulse power.
3, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that described current source (5) is made up of the pulse power (51), the first mutual inductance solenoid (52), first capacitor (53), the described first mutual inductance solenoid (52) is made up of first primary coil (52-1) and first secondary coil (52-2), the first and last end of first primary coil (52-1) connects two outputs of the pulse power (51) respectively, and an end of first secondary coil (52-2) is connected with an end of first capacitor (53); The two ends of coil (4) are connected with the other end of first secondary coil (52-2) and the other end of first capacitor (53) respectively.
4, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that described current source (5) is by DC power supply (54), second mutual inductor (55), main switch (K1), short switch (K2) and second capacitor (56) are formed, second mutual inductor (55) is to be wound on the hollow mutual inductor that forms together by second primary coil (55-1) and second subprime coil (55-2), an output of DC power supply (54) connects an end of main switch (K1), the other end of main switch (K1) connects an end of second primary coil (55-1) and an end of short switch (K2), the other end of short switch (K2) connects the other end of DC current source and the other end of second primary coil (55-1), and the first and last end of second subprime coil (55-2) connects the two ends of second capacitor (56) respectively; Coil (4) is connected in parallel on the two ends of second capacitor (56).
5, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that described coil (4) forms by two, be respectively a coil (4-1) and No. two coils (4-2), a coil (4-1) and No. two coils (4-2) are separately positioned on the both sides of die sleeve (3), two coil first and last ends link to each other respectively and are connected with two terminals of current source (5) respectively, and magnetic direction unanimity and described magnetic direction that two coils form are vertical with the pressing direction of permanent magnet.
6, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that it also comprises plug (21) and following plug (23), patrix drift (1) and counterdie drift (2) are tubular, last plug (21) and following plug (23) are separately positioned in patrix drift (1) and the counterdie drift (2), described coil (4) is formed by two, be respectively No. three coils (4-3) and No. four coils (4-4), No. three coils (4-3) and No. four coils (4-4) are gone up respectively, be arranged on the outside of die sleeve (3) down, two coil first and last ends link to each other respectively and are connected with two terminals of current source (5) respectively, and the transient magnetic field direction that two coils form relatively and be parallel to each other and in the magnetic field of two magnetic field intersections formation radial radiations.
7, anisotropic rare earth permanent magnet body oriontation shaping device according to claim 1, it is characterized in that it comprises that also the radial multi-pole oriented coils that is arranged on die sleeve (3) outside twines body (22), it is a cylindrical sleeve that the radial multi-pole oriented coils twines body (22), this cylindrical sleeve inner surface has many even numbers groove, constitute pole shoe between the adjacent groove, be wound with a coil on each pole shoe, a plurality of coil first and last ends are connected successively, and a plurality of coil becomes series loop with two group of terminals of current source (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200620021549 CN200986854Y (en) | 2006-08-29 | 2006-08-29 | Aeolotropism cementing rare-earth permanent magnet orientation forming device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200620021549 CN200986854Y (en) | 2006-08-29 | 2006-08-29 | Aeolotropism cementing rare-earth permanent magnet orientation forming device |
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| CN200986854Y true CN200986854Y (en) | 2007-12-05 |
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| CN 200620021549 Expired - Fee Related CN200986854Y (en) | 2006-08-29 | 2006-08-29 | Aeolotropism cementing rare-earth permanent magnet orientation forming device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225465A (en) * | 2011-06-16 | 2011-10-26 | 安徽大地熊新材料股份有限公司 | Sintered NdFeB powder orienting method |
| CN102479599A (en) * | 2010-11-29 | 2012-05-30 | 湖南吉瑞斯材料科技有限公司 | Manufacture method of permanent magnet |
| CN103611938A (en) * | 2013-12-07 | 2014-03-05 | 丁世瑜 | Anisotropic multipole magnet ring forming mold system |
| CN103854843A (en) * | 2012-12-06 | 2014-06-11 | 宁波科宁达工业有限公司 | Pre-magnetizing equipment, pressing device and method for producing sintering permanent magnet |
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| CN111640552A (en) * | 2020-05-25 | 2020-09-08 | 华中科技大学 | Permanent magnet compression molding method and device |
| CN115780807A (en) * | 2022-12-27 | 2023-03-14 | 北京工商大学 | Full-automatic magnet integrated forming device and method using one-way mover |
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2006
- 2006-08-29 CN CN 200620021549 patent/CN200986854Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479599A (en) * | 2010-11-29 | 2012-05-30 | 湖南吉瑞斯材料科技有限公司 | Manufacture method of permanent magnet |
| CN102225465A (en) * | 2011-06-16 | 2011-10-26 | 安徽大地熊新材料股份有限公司 | Sintered NdFeB powder orienting method |
| CN102225465B (en) * | 2011-06-16 | 2013-04-03 | 安徽大地熊新材料股份有限公司 | Sintered NdFeB powder orienting method |
| CN103854843A (en) * | 2012-12-06 | 2014-06-11 | 宁波科宁达工业有限公司 | Pre-magnetizing equipment, pressing device and method for producing sintering permanent magnet |
| CN103854843B (en) * | 2012-12-06 | 2017-08-15 | 宁波科宁达工业有限公司 | Produce preliminary filling magnetic machine, press device and the method for sintered permanent magnet |
| CN103611938A (en) * | 2013-12-07 | 2014-03-05 | 丁世瑜 | Anisotropic multipole magnet ring forming mold system |
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| CN111640552A (en) * | 2020-05-25 | 2020-09-08 | 华中科技大学 | Permanent magnet compression molding method and device |
| CN115780807A (en) * | 2022-12-27 | 2023-03-14 | 北京工商大学 | Full-automatic magnet integrated forming device and method using one-way mover |
| CN115780807B (en) * | 2022-12-27 | 2024-01-26 | 北京工商大学 | Full-automatic magnet integrated forming device and method using unidirectional motion device |
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