CN102969141A - Manufacturing method for rare earth-iron-boron permanent magnet magnetic ring - Google Patents
Manufacturing method for rare earth-iron-boron permanent magnet magnetic ring Download PDFInfo
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- CN102969141A CN102969141A CN2012104543525A CN201210454352A CN102969141A CN 102969141 A CN102969141 A CN 102969141A CN 2012104543525 A CN2012104543525 A CN 2012104543525A CN 201210454352 A CN201210454352 A CN 201210454352A CN 102969141 A CN102969141 A CN 102969141A
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Abstract
The invention relates to a manufacturing method for a magnetic ring, in particular to a manufacturing method for a rare earth-iron-boron permanent magnet magnetic ring, which is used for solving the problem that either a radiation magnetic ring prepared with the prior art cannot be prepared into a multi-pole magnetic ring or the mechanical strength is insufficient. The manufacturing method comprises the following steps of: (1) machining permanent magnets into magnets of regular shapes which can be arranged into a complete circular ring; (2) cleaning the surfaces of the magnets of regular shapes; (3) arranging a layer of film material between two adjacent magnets, arranging into a complete circular ring, and putting into a fixing device for clamping; and (4) putting the magnetic ring and the fixing device into a vacuum sintering furnace, and adjusting the vacuum degree in the furnace below 10<-4>Pa. The manufacturing method has the advantages that a reasonable design is adopted, and the mechanical strength of a radiation magnetic ring of the rare earth-iron-boron permanent magnet manufactured from a flux alloy film material by using the method is increased greatly.
Description
Technical field
The present invention relates to the manufacture method of magnet ring, be specially a kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring.
Background technology
At present, the radiation magnetic loop of rare-earth-iron-boron based permanent magnet has two kinds of manufacture methods, and a kind of is the direct multipole oriental magnetic ring shape of whole compressing one-tenth; It is complete circular that another kind is that the magnet arrangements with the polylith regular shape becomes, and smears binding agent simultaneously between adjacent magnet, and then natural air drying condenses or toasts thermosetting and is made into multipole radiation magnetic loop.The shortcoming of the radiation magnetic loop that above-mentioned first method is made is: the radiation magnetic loop that can't produce multipole (for example surpassing 12 utmost points), and utilize the multipole oriented moulding technology of coil to cause the wider weak magnetic area territory of existence between the adjacent pole, can not satisfy the real work requirement.The shortcoming of the radiation magnetic loop that above-mentioned second method is made is: utilize the mechanical strength of radiation magnetic loop of binding agent preparation inadequate, can not satisfy the requirement of actual industrial.
Therefore the radiation magnetic loop of prior art preparation or can not be made into multi-pole magnet-ring, or mechanical strength is inadequate, is necessary to invent a kind of method of radiation magnetic loop of new preparation rare-earth-iron-boron based permanent magnet.
Summary of the invention
The present invention is for the method for the radiation magnetic loop that solves prior art preparation or can not be made into multi-pole magnet-ring, or the inadequate problem of mechanical strength, and a kind of manufacture method of radiation magnetic loop of rare-earth-iron-boron based permanent magnet is provided.
The present invention adopts following technical scheme to realize:
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), permanent magnet is become can arrange the magnet of the regular shape that obtains a complete circle through machining processes.
(2), the magnet with regular shape carries out the cleaning surfaces processing.
(3), between two adjacent magnets, place thin film material layer, being arranged in a complete annulus is placed in the fixture and clamps.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 450～650 ℃ with the programming rate of 3～10 ℃/min, be incubated 1～5 hour, then pass into argon gas or helium, arrive pressure 10～50KPa, continue to be warming up to 800～1000 ℃, be incubated after 8～24 hours, namely obtain magnet ring.
For the shape structure of described fixture (anchor clamps), those skilled in the art all can realize, and this device has a variety of known configurations at present, can directly use in the said film material preparation method.
In addition, use following anchor clamps to be more conducive to the preparation of above-mentioned radiation magnetic loop.
Shown in Fig. 8,9, a kind of anchor clamps for making radiation magnetic loop, comprise the first semicircle contained side 100, the second semicircle contained side 200 and chassis 300, the card division 110 with boss is outwards extended respectively at the two ends of described the first semicircle contained side 100, the card division 210 with draw-in groove is outwards extended respectively at the two ends of described the second semicircle contained side 200, and the shape of described draw-in groove and boss matches; Be fixed with a cylinder 400 on the described chassis 300, described cylinder 400 places the center by the circle that the first semicircle contained side 100 and the second semicircle contained side 200 are formed.
During implementation, described the first semicircle contained side 100 or the second semicircle contained side 200 fixedly place on the described chassis 300, are convenient to like this use of anchor clamps.The shape of described draw-in groove and boss is dovetail shaped.Described chassis 300 is rounded, and described cylinder 400 places the center on chassis 300.Described fixture application is not made with the material that permanent magnet reacts, such as can adopting molybdenum Mo, tantalum Ta, tungsten W, vanadium V etc., or their alloy.
Thin-film material described in the above-mentioned steps (3) be a kind of thickness at the alloy film material of fluxing of 0.01～0.1mm, contain 60%～100%(weight in this alloy film material of fluxing) A and 0～40%(weight) B; Described A is that one or more mix with arbitrary proportion among praseodymium Pr in the rare earth material, neodymium Nd, gadolinium Gd, terbium Tb, dysprosium Dy, the holmium Ho; Described B is that one or more mix with arbitrary proportion among aluminium Al, gallium Ga, copper Cu, magnesium Mg, the tin Sn.
Rare earth element refers to lanthanide series in the periodic table of chemical element-lanthanum La, cerium Ce, praseodymium Pr, neodymium Nd, promethium Pm, samarium Sm, europium Eu, gadolinium Gd, terbium Tb, dysprosium Dy, holmium Ho, erbium Er, thulium Tm, ytterbium Yb, lutetium Lu, and with closely-related two elements of 15 elements of group of the lanthanides-scandium Sc and yttrium Y totally 17 kinds of elements.The present invention optimizes six kinds of praseodymium Pr in the rare earth material, neodymium Nd, gadolinium Gd, terbium Tb, dysprosium Dy, holmium Ho etc. through fully test, in addition, optimize five kinds of metal materials such as aluminium Al, gallium Ga, copper Cu, magnesium Mg, tin Sn and cooperate with rare earth material, produce the satisfactory alloy film material of fluxing.
The preparation method of the above-mentioned alloy film material of fluxing is as follows:
(1), raw material is prepared: contain 60%～100%(weight in the raw material) A and 0～40%(weight) B; Described A is that one or more mix with arbitrary proportion among praseodymium Pr in the rare earth material, neodymium Nd, gadolinium Gd, terbium Tb, dysprosium Dy, the holmium Ho; Described B is that one or more mix with arbitrary proportion among aluminium Al, gallium Ga, copper Cu, magnesium Mg, the tin Sn.
(2), the A that step (1) is prepared and the compound of B place in the vacuum melting furnace; furnace pressure is transferred to below the 5Pa; then passing into argon gas or helium to pressure is 0.35～0.45MPa; start simultaneously the smelting furnace heating system; under argon gas or helium protection, make compound fusing (about 1400～1600 ℃); then under fusion temperature insulation to the aluminium alloy that forms homogeneous (because alloy is when just having melted and fail to occur fully phase transformation reaction between the metal; cause aluminium alloy to fail to form homogeneous, so need insulation).
(3), utilize jacking system that the film formation device that inside is provided with cooling recirculation system is immersed in the aluminium alloy, hoisting velocity with 0.5～1m/min proposes film formation device from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
(4), film is taken off (the tapped device can take off film from apparatus surface) from the film formation device surface, namely make thin-film material.
(5), utilize cold rolling method the thin-film material of step (4) preparation to be made into the thin-film material of smooth homogeneous.
Described inside has the film formation device of cooling recirculation system, and those skilled in the art all can realize, and this film formation device has a variety of known configurations at present, can directly use in the said film material preparation method.Described this film formation device application is not made with the material that aluminium alloy reacts, and for example can adopt molybdenum Mo.
In addition, use following film formation device to be more conducive to the preparation of the above-mentioned alloy film material of fluxing.
Shown in Fig. 3,4,5,6,7, a kind of film formation device of molten alloy, comprise the shell 20 and the inner core 10 that places in the shell 20 of upper end open, described inner core 10 tops are extended with the outer edge 11 of closure 20 openings, form cavity 30 between described shell 20 and the inner core 10; Have at least one apopore 12 on the outer edge 11 at described inner core 10 tops, vertically run through inner core 10 bodies and have at least one inlet opening 13.
During implementation, the outer surface of shell 20 is made into coarse shape, like this when the preparation alloy film material, when this device is immersed in the aluminium alloy, coarse outer surface is conducive to form film thereon on the shell 20.The outer edge 11 of shell 20 and inner core 10 can pass through bolted.
Described cold-rolling process has been a kind of processing technology of maturation.
In the preparation process of the radiation magnetic loop of rare-earth-iron-boron based permanent magnet, above-mentioned one deck fluxed, and (thickness is clipped between two adjacent magnets 0.01～0.1mm) alloy film material, after being arranged in complete annulus, place anchor clamps, the effect of anchor clamps is to provide a kind of constraint mould for piecing together complete radiation magnetic loop, then, put into vacuum sintering furnace, in vacuum atmosphere, be heated enforcement heat treatment, at first make the alloy film material fusing of fluxing, and heat gradually and make flux alloy film material and magnet surface generation congruent melting state (temperature can not cause the fusing of magnet), be in the step (4) " programming rate with 3～10 ℃/min is warmed up to 450～650 ℃; be incubated 1～5 hour; " flux the diffusion of atom can occur between alloy film material and the magnet, the alloy film material itself of fluxing can enter on the crystal boundary or border of magnet, because the very thin thickness of film, the thin layer (for example thickness only is 20nm) of congruent melting has occured in magnet surface this moment, film penetrates in the permanent magnet fully in this process, afterwards, " pass into argon gas or helium; arrive pressure 10～50KPa; continue to be warming up to 800～1000 ℃; be incubated 8 ℃～24 hours ", and then make between the permanent magnet and react to each other, carry out fixed, alloy film material " inducing " effect if do not flux, even under 800～1000 ℃ of hot conditionss, can not react between the permanent magnet yet and carry out fixed.If be lower than 8 hours, the reaction between the permanent magnet can't occur, if be higher than 24 hours, can cause magnet overreaction (for example Surface Contact becomes blocked up or worsen on the surface that contacts).Through behind the said process, not only so that the radiative collision body form have high mechanical properties very " integral body " (after magnet ring is made, because film has penetrated in the permanent magnet, so seen magnet ring the vestige of splicing is not arranged, just as magnet ring is integral sintered forming), and help to improve the performance of radiation magnetic loop.In addition, because permanent magnet is different from the coefficient of expansion of outside anchor clamps, under heated condition, the coefficient of expansion of permanent magnet is much larger than the coefficient of expansion of anchor clamps, pass through so the stressed of anchor clamps, further be conducive to the fixed of radiation magnetic loop, the mechanical strength of Enhanced Radiation Reduced Blast magnet ring.Analyze from microstructure, permanent magnet is by the rich neodymium phase composition of main phase grain and parcel main phase grain, described principal phase contains the rare earth composition about 30%, described rich neodymium contains the rare earth composition about 70% mutually, behind flux alloy material and permanent magnet surfaces generation congruent melting state, owing to flux alloy material middle rare earth composition more than or equal to 60%, close with the rare earth composition content of the rich neodymium of permanent magnet (surface) in mutually like this or greater than the rare earth composition content of rich neodymium in mutually, all be conducive to occur between them the diffusion of atom.And the effect of B is in the alloy material of fluxing: after when fluxing the diffusion of atom occuring between alloy material and the magnet, help the recovery of the rich neodymium phase structure of permanent magnet surfaces, also can reduce in addition the fusion temperature of the alloy material of fluxing.
The present invention is reasonable in design, use the method for the invention and the mechanical strength of the radiation magnetic loop of the rare-earth-iron-boron based permanent magnet of the alloy film material making of fluxing greatly to improve, suitable with the mechanical strength of the radiation magnetic loop that utilizes direct sintering to form, satisfy the requirement of actual industrial fully.And, the inventive method can be made into multi-pole magnet-ring, because each independent permanent magnet can magnetize separately in the radiation magnetic loop, like this after being made into magnet ring, the number of magnetic poles of magnet ring depends on the quantity that is combined into the used permanent magnet of magnet ring, there are how many piece permanent magnets what magnetic poles are namely arranged, can produce the magnet ring more than 12 utmost points so fully, and, do not need to utilize the multipole oriented moulding technology of coil, just do not have the problem in weak magnetic area territory yet.The radiation magnetic loop that this method is made more is conducive to actual application.
Description of drawings
Fig. 1 is the structural representation of rare-earth-iron-boron based permanent magnet magnet ring.
Fig. 2 is the structural representation that magnet ring places anchor clamps.
Fig. 3 is the overall structure schematic diagram of film formation device.
Fig. 4 is the structural representation of inner core.
Fig. 5 is the front longitudinal sectional view of Fig. 4.
Fig. 6 is the front longitudinal sectional view of Fig. 3.
Fig. 7 is the side longitudinal sectional view of Fig. 3.
Fig. 8 is the overall structure schematic diagram of anchor clamps.
Fig. 9 is a part of structural representation of anchor clamps.
Figure 10 is another part structural representation of anchor clamps.
Figure 11 is the schematic diagram of preparation thin-film material in the intermediate frequency vacuum induction melting furnace.
Among the figure, G-anchor clamps, S-thin-film material, the magnet of M-regular shape, the 1-gas extraction system, 2-Medium frequency induction circle, 3-gas control valve, 4-compound, the 5-film formation device, 10-inner core, 20-shell, 30-cavity, the 11-outer edge, 12-apopore, 13-inlet opening, 100-the first semicircle contained side, 200-the second semicircle contained side, 300-chassis, 400-cylinder, 110-are with the card division of boss, and 210-is with the card division of draw-in groove.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are elaborated.
Embodiment 1
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out surface ion cleaning (those skilled in the art all know the cleaning operation that how to carry out herein) in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 600 ℃ with the programming rate of 7 ℃/min, be incubated 2 hours, then pass into argon gas or helium, arrival pressure 20KPa continues to be warming up to 850 ℃, is incubated after 20 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 100%(weight in the raw material) A; Described A is the praseodymium Pr in the rare earth material.
B, the praseodymium Pr raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.35MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make raw material 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.7m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from film formation device 5 surfaces, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 2
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 550 ℃ with the programming rate of 3 ℃/min, be incubated 4 hours, then pass into argon gas or helium, arrival pressure 50KPa continues to be warming up to 900 ℃, is incubated after 17 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 80%(weight in the raw material) A and 20%(weight) B; Described A is comprised of with ratio 1:6:9 neodymium Nd, gadolinium Gd, dysprosium Dy; Described B is comprised of with ratio 13:7 aluminium Al, tin Sn.
B, A and B compound that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.42MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, will install from aluminium alloy with the hoisting velocity of 0.5m/min and propose, forming a layer thickness on the surface of device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 3
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 450 ℃ with the programming rate of 5 ℃/min, be incubated 1 hour, then pass into argon gas or helium, arrival pressure 30KPa continues to be warming up to 1000 ℃, is incubated after 8 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 90%(weight in the raw material) A and 10%(weight) B; Described A is comprised of with ratio 5:3 dysprosium Dy, gadolinium Gd; Described B is comprised of with ratio 1:1 aluminium Al, gallium Ga.
B, A and B raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.45MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.8m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 4
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 500 ℃ with the programming rate of 10 ℃/min, be incubated 5 hours, then pass into argon gas or helium, arrival pressure 10KPa continues to be warming up to 950 ℃, is incubated after 10 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 60%(weight in the raw material) A and 40%(weight) B; Described A is comprised of terbium Tb; Described B is comprised of with ratio 25:12:3 aluminium Al, magnesium Mg, tin Sn.
B, A and B raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.37MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.6m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 5
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 650 ℃ with the programming rate of 8 ℃/min, be incubated 3 hours, then pass into argon gas or helium, arrival pressure 40KPa continues to be warming up to 970 ℃, is incubated after 15 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 75%(weight in the raw material) A and 25%(weight) B; Described A is comprised of with ratio 8:7 terbium Tb, holmium Ho; Described B is comprised of with ratio 3:4:7:11 aluminium Al, gallium Ga, copper Cu, magnesium Mg.
B, A and B raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.45MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 1m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 6
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes, described magnet shape is that inner arc center of circle angle is the tile-shaped magnet of 22.5 degree.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 480 ℃ with the programming rate of 9 ℃/min, be incubated 5 hours, then pass into argon gas or helium, arrival pressure 35KPa continues to be warming up to 830 ℃, is incubated after 22 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 100%(weight in the raw material) A; Contain 5%(weight among the described A) praseodymium Pr, 20%(weight) neodymium Nd, 17%(weight) gadolinium Gd, 28%(weight) dysprosium Dy, 30%(weight) holmium Ho.
B, the A raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.4MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.9m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 7
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes, described magnet shape is that inner arc center of circle angle is the tile-shaped magnet of 20 degree.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 570 ℃ with the programming rate of 4 ℃/min, be incubated 2 hours, then pass into argon gas or helium, arrival pressure 27KPa continues to be warming up to 920 ℃, is incubated after 24 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 65%(weight in the raw material) A and 35%(weight) B; Described A is comprised of with ratio 3:7:2:1 neodymium Nd, dysprosium Dy, gadolinium Gd, holmium Ho; Described B is comprised of with ratio 10:12:5:8 aluminium Al, gallium Ga, magnesium Mg, copper Cu.
B, A and B raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.38MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.6m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Embodiment 8
A kind of manufacture method of rare-earth-iron-boron based permanent magnet magnet ring comprises the steps:
(1), as shown in Figure 1, permanent magnet is become can arrange the magnet M of the regular shape that obtains a complete circle through machining processes, described magnet shape is that inner arc center of circle angle is the tile-shaped magnet of 25 degree.
(2), the magnet of regular shape is at first carried out cleaning surfaces by flow sand jet, put it into afterwards and carry out the surface ion cleaning in the heat-treatment furnace.
(3), between two adjacent magnets, place thin film material layer S, be arranged in a complete annulus and be placed in the fixture (anchor clamps G) and clamp, as shown in Figure 2.
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 620 ℃ with the programming rate of 6 ℃/min, be incubated 1 hour, then pass into argon gas or helium, arrival pressure 45KPa continues to be warming up to 800 ℃, is incubated after 13 hours, namely obtains magnet ring.
As shown in figure 10, said film material preparation method comprises the steps:
A, raw material prepare: contain 82%(weight in the raw material) A and 18%(weight) B; Described A is comprised of with ratio 7:34:21:4:5:11 praseodymium Pr, neodymium Nd, gadolinium Gd, terbium Tb, dysprosium Dy, holmium Ho; Described B is comprised of with ratio 3:2:9:1:3 aluminium Al, gallium Ga, copper Cu, magnesium Mg, tin Sn.
B, A and B raw material that step a is prepared place in the intermediate frequency vacuum induction melting furnace; start gas extraction system 1; furnace pressure is transferred to below the 5Pa; then open gas control valve 3; passing into argon gas or helium to pressure is 0.44MPa; start simultaneously smelting furnace heating system (Medium frequency induction circle 2), under argon gas or helium protection, make compound 4 fusings (about 1400～1600 ℃), then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous.
C, utilize jacking system that the film formation device 5 that inside is provided with cooling recirculation system is immersed in the aluminium alloy, with the hoisting velocity of 0.5m/min film formation device is proposed from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm.
D, film is taken off from the film formation device surface, namely make thin-film material S.
E, the thin-film material that utilizes cold rolling method that steps d is prepared are made into the thin-film material of smooth homogeneous.
Claims (9)
1. the manufacture method of a rare-earth-iron-boron based permanent magnet magnet ring is characterized in that: comprise the steps:
(1), permanent magnet is become can arrange the magnet of the regular shape that obtains a complete circle through machining processes;
(2), the magnet with regular shape carries out the cleaning surfaces processing;
(3), between two adjacent magnets, place thin film material layer, being arranged in a complete annulus is placed in the fixture and clamps;
Described thin-film material contains 60%～100%(weight) A and 0～40%(weight) B; Described A is that one or more mix with arbitrary proportion among praseodymium Pr in the rare earth material, neodymium Nd, gadolinium Gd, terbium Tb, dysprosium Dy, the holmium Ho; Described B is that one or more mix with arbitrary proportion among aluminium Al, gallium Ga, copper Cu, magnesium Mg, the tin Sn; The thickness of described thin-film material is 0.01～0.1mm; The preparation method of described thin-film material comprises the steps: a, prepares raw material A and B; B, the A that step a is prepared and the compound of B place in the vacuum melting furnace, furnace pressure is transferred to below the 5Pa, then passing into argon gas or helium to pressure is 0.35～0.45MPa, start simultaneously the smelting furnace heating system, under argon gas or helium protection, make the compound fusing, then under fusion temperature, be incubated to the aluminium alloy that forms homogeneous; C, utilize jacking system that the film formation device that inside is provided with cooling recirculation system is immersed in the aluminium alloy, hoisting velocity with 0.5～1m/min proposes film formation device from aluminium alloy, forming a layer thickness on the surface of film formation device is the film of 0.01～0.1mm; D, film is taken off from the film formation device surface, namely be made into thin-film material;
(4), magnet ring and fixture are placed in the vacuum sintering furnace vacuum degree to 10 in the regulating stove
-4Below the Pa, start afterwards heating system in the stove, be warmed up to 450～650 ℃ with the programming rate of 3～10 ℃/min, be incubated 1～5 hour, then pass into argon gas or helium, arrive pressure 10～50KPa, continue to be warming up to 800～1000 ℃, be incubated after 8～24 hours, namely obtain magnet ring.
2. the manufacture method of rare-earth-iron-boron based permanent magnet magnet ring according to claim 1 is characterized in that: the magnet shape of regular shape is that inner arc center of circle angle is the tile-shaped magnets of 20～25 degree in the described step (1).
3. the manufacture method of rare-earth-iron-boron based permanent magnet magnet ring according to claim 1 and 2, it is characterized in that: the concrete grammar of described step (2) is: magnet at first carries out cleaning surfaces by flow sand jet, puts it into afterwards to carry out the surface ion cleaning in the heat-treatment furnace.
4. film formation device for the preparation of thin-film material in the step in the claim 1 (3), it is characterized in that: comprise the shell (20) of upper end open and place the interior inner core (10) of shell (20), the outer edge (11) of closure (20) opening is extended at described inner core (10) top, forms cavity (30) between described shell (20) and the inner core (10); Have at least one apopore (12) on the outer edge (11) at described inner core (10) top, vertically run through inner core (10) body and have at least one inlet opening (13).
5. film formation device according to claim 4, it is characterized in that: the outer surface of described shell (20) is rough-shape.
6. the fixture described in the step (3) in the claim 1, it is characterized in that: comprise the first semicircle contained side (100), the second semicircle contained side (200) and chassis (300), the card division (110) with boss is outwards extended respectively at the two ends of described the first semicircle contained side (100), the card division (210) with draw-in groove is outwards extended respectively at the two ends of described the second semicircle contained side (200), and the shape of described draw-in groove and boss matches; Be fixed with a cylinder (400) on the described chassis (300), described cylinder (400) places the center by the circle that the first semicircle contained side (100) and the second semicircle contained side (200) are formed.
7. fixture according to claim 6, it is characterized in that: described the first semicircle contained side (100) or the second semicircle contained side (200) fixedly place on the described chassis (300).
8. according to claim 6 or 7 described fixtures, it is characterized in that: the shape of described draw-in groove and boss is dovetail shaped.
9. fixture according to claim 8, it is characterized in that: described chassis (300) are rounded, and described cylinder (400) places the center of chassis (300).
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