CN209249282U

CN209249282U - Sprayed printed system

Info

Publication number: CN209249282U
Application number: CN201821874408.1U
Authority: CN
Inventors: 周磊; 李建; 程星华; 刘涛; 喻晓军
Original assignee: Advanced Technology and Materials Co Ltd
Current assignee: Advanced Technology and Materials Co Ltd
Priority date: 2018-11-14
Filing date: 2018-11-14
Publication date: 2019-08-13
Anticipated expiration: 2028-11-14

Abstract

The utility model discloses a kind of sprayed printed systems.A kind of sprayed printed system, comprising: for containing the container of shape material；Sample stage, the sample for needing spray printing to handle for surface to be arranged；Spray gun, including cavity and the nozzle for being set to the cavity end, for the material in the container to be ejected into the sample surfaces；The container is connect with the cavity, and the nozzle is located at the top of the sample stage；Heating device is arranged side by side with the cavity of the spray gun and is spaced specific range, for solidifying the material of sample surfaces after spray printing processing on the sample stage.The heavy rare earth amount that high-performance rare-earth permanent magnet material can be less is prepared using the utility model sprayed printed system come reach magnet comprehensive magnetic can significantly improve.

Description

Sprayed printed system

Technical field

The utility model relates to rare-earth permanent-magnet material technical field, in particular to a kind of sprayed printed system, which can The time used in rare earth permanent-magnetic material is prepared to greatly reduce.

Background technique

Sintered NdFeB rare-earth permanent magnet is strongest permanent-magnet material magnetic so far, be widely used in electronics, electromechanics, The numerous areas such as instrument and medical treatment.It is with fastest developing speed in the world today, the best permanent-magnet material of market prospects.With hybrid power The fast development of automobile, it is desirable that high temperature permanent magnet of the operating temperature at 200 DEG C or more, therefore, to the high-temperature magnetic of NdFeB magnet More stringent requirements are proposed for energy.

Coercivity decline acutely, is not able to satisfy requirement to common NdFeB magnet at high temperature.Currently, mainly using The coercivity that Dy Tb member usually improves magnet is adulterated in NdFeB magnet, and then improves the high-temperature magnetic energy of magnet.Research Show that Dy preferentially occupies 4f crystalline substance position in NdFeB, every part of Nd is replaced to form Dy by Dy₂Fe₁₄B, this coercivity can improve a lot, Dy also has an impact to the microstructure of magnetic material, can inhibit growing up for crystal grain, this is also to improve coercitive another reason.But It is linearly increasing with the increase of Dy content to be that coercivity is not, when Dy content is lower, coercivity increase quickly, Yi Houzeng Add the slow of change；The reason is that part Dy dissolves in crystal boundary constituent phases, there is no completely into main phase.Currently, mainly using melting The method that Dy metal is directly added into when female Tai Jin, a kind of effective ways of traditional raising NdFeB sintered magnet Hcj are to pass through weight Rare earth element such as Dy, Tb replace magnet main phase Nd₂Fe₁₄Nd in B is formed (Nd, Dy)₂Fe₁₄B, (Nd, Dy)₂Fe₁₄B it is each to The opposite sex is better than Nd₂Fe₁₄B；Thus, the Hcj of magnet is significantly improved；But it is these heavy rare earth element scarcity of resources, expensive, On the other hand, the magnetic moment of Nd and iron is arranged in parallel, and Dy and iron rule are arranged anti-parallels, thus, the remanent magnetism Br of magnet and most Big magnetic energy product (BH) max can be reduced.The mouldability of sintered NdFeB magnet is very poor, it is necessary to can be only achieved qualification by post-processing Dimensional accuracy.But since material brittleness itself is very big, the loss of post-processing chinese raw materials is made to be up to 40-50%, caused dilute The huge waste of soil resource, while machining also improves the manufacturing cost of material.And bond NdFeB magnet be substantially it is each to The same sex, magnetic property is lower, can not be applied to the higher field of magnetic requirements.

In recent years, many research institutions reported a variety of works that rare earth element is diffused into intrinsic silicon from magnet surface Skill.This process makes the rare earth element of infiltration along crystal boundary and main phase grain surface region, and rare earth element is selected Optimal sorting cloth, not only increases coercivity, also as save the usage amount of valuable rare earth, is substantially reduced remanent magnetism and magnetic energy product not. But using vapor deposition or sputtering method, that there are efficiency is lower in producing in enormous quantities, and a large amount of rare earth metals are dispersed in heating during vapor deposition In furnace chamber, the unnecessary waste of heavy rare earth metal is caused.And single rare earth oxide or fluoride heating are coated on surface Diffusion then has what coercivity raising was limited.

Therefore, it is badly in need of that a kind of heavy rare earth metal dosage is few and coercivity increase rate is big, remanent magnetism is not substantially reduced Preparation method and the rare earth permanent-magnetic material preparation of rare earth permanent-magnetic material equipment used.

Summary of the invention

The purpose of this utility model is to provide a kind of sprayed printed system, which can be used for preparing rare earth permanent-magnetic material.

To achieve the goals above, the utility model uses following technical scheme:

A kind of sprayed printed system, comprising:

For containing the container of shape material；

Sample stage, the sample for needing spray printing to handle for surface to be arranged；

Spray gun, including cavity and the nozzle for being set to the cavity end, for the material in the container to be ejected into The sample surfaces；The container is connect with the cavity, and the nozzle is located at the top of the sample stage；

Heating device is arranged side by side and spaced apart, for solidifying the sample stage with the cavity of the spray gun The material of spray printing treated sample surfaces.

In above-mentioned sprayed printed system, it is preferable that the sample stage is the sample stage that can move freely；

In above-mentioned sprayed printed system, it is preferable that overall alignment has more than one piece surface that spray printing is needed to handle on the sample stage Sample.

In above-mentioned sprayed printed system, it is preferable that be additionally provided with self priming pump between the container and the cavity, be used for institute The material in container is stated to be pumped in the cavity of the spray gun.

In above-mentioned sprayed printed system, it is preferable that the heating device is pulse heater.

In above-mentioned sprayed printed system, it is preferable that the heating device is fixedly connected by fixing piece with the spray gun.

In above-mentioned sprayed printed system, it is preferable that the spray gun is that can move freely spray gun.

In above-mentioned sprayed printed system, it is preferable that the nozzle is removable installed in the cavity end, it is preferable that institute Stating nozzle is platypelloid type, it is highly preferred that the length of the nozzle is 2-50mm, it is of same size with the single sample.

In above-mentioned sprayed printed system, it is preferable that the horizontal distance between the heating device and the nozzle is the sample N times of product length, N is integer, it is highly preferred that N >=2 both may be used in the preferred scope it is further preferred that N is 2 or 3 or 4 It avoids heating device and nozzle distance excessively close and influences the sample surfaces powder that nozzle is just spraying, so that sample surfaces powder is too early Solidification generates and solidifies inconsistent non-uniform phenomenon；Can avoid heating device again causes operation to be connected poor too far with nozzle distance, Powder curing is not in time.

In above-mentioned sprayed printed system, it is preferable that the vertical range of the nozzle and the sample surfaces is 3-5mm.

In above-mentioned sprayed printed system, it is preferable that the vertical range of the heating surface of the heating device and the sample surfaces For 8-12mm, so that not only guaranteeing the required temperature that is cured, but also neighboring samples will not be impacted.

In above-mentioned sprayed printed system, it is preferable that the cavity is equipped with ultrasonic vibration apparatus, for so that the cavity Interior material is not adhere in cavity wall.

In above-mentioned sprayed printed system, it is preferable that the container is connected to by gas piping with oxygen-free gas feedway.

In above-mentioned sprayed printed system, it is preferable that the pipeline between the self priming pump and the cavity is adjusted equipped with pressure Valve, the pressure-regulating valve is for adjusting the unit time into the intracorporal inventory of the chamber.

In above-mentioned sprayed printed system, it is preferable that the sprayed printed system further includes for the sample after solidifying surface material The manipulator of turn-over is set near the sample stage.

Compared with prior art, the utility model has the beneficial effects that

1) sprayed printed system of the utility model can handle to rapid, high volume multiple magnets to be modified, and not need special dry Dry equipment, i.e. energy saving, and reduce the processing time of magnet to be modified.If do not use the utility model with spray with drying Cured sprayed printed system, but all samples of one side will have been sprayed while having been moved on in other dry solidification equipment and solidified, Then it sprays another side again to go to solidify again, such operation will waste the processing time of magnet significantly.And by the one side of multiple magnets Direct turn-over carries out the spray printing of another side after spray printing film layer, is adhered between the film layer and sample stage after will lead to turn-over or film Layer falls off, and two sides is unified to carry out curing process after having sprayed to be also that can greatly prolong the processing time of magnet again.Therefore, this is practical The novel processing time for substantially reducing magnet to be modified with the sprayed printed system of dry solidification with spray, and energy saving, more favorably In the performance for improving magnet.

2) method sprayed using the utility model sprayed printed system, so that heavy rare earth amount used in preparation process is big Width reduces, that is, the cost saved resource, reduced product again improves the environment friendly of product and the cost performance of product.

3) the utility model is using low energy consumption and the pulse heater separated by a distance with nozzle, to being ejected into NdFeB The material of magnet surface is solidified, and quickly material can be made to solidify, and is also not required to other drying equipment, and therefore, this is practical new Type curing method is simple and convenient and required low energy consumption.

4) sprayed printed system of the utility model is in time to solidify material with solidification with spray, reduces the processing time, Shorten the time of contact of heavy rare earth material and air；In addition, heavy rare earth element attachment can be improved in magnet with solidification with spray The adhesive force on surface.

5) using the rare earth permanent-magnetic material comprehensive magnetic energy with higher of the utility model sprayed printed system preparation.

6) it is far smaller than used the time required to when preparing rare earth permanent-magnetic material using the sprayed printed system of the utility model conventional Required time when jet printing appts prepare rare earth permanent-magnetic material.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model sprayed printed system；

Wherein, the label in attached drawing is as follows: Raw material pail 1, self priming pump 2, cavity 3, nozzle 4, pulse heater 5, sample stage 6, pressure-regulating valve 7, manipulator 8.

Specific embodiment

In order to be more likely to be clearly understood the content of the utility model, below according to the specific implementation of the utility model Example and in conjunction with attached drawing, the utility model is described in further detail.

NdFeB magnet to be processed used in the following embodiment is sintered NdFeB magnet, using not in each embodiment The same trade mark, different batches commercialization Sintered NdFeB magnet as magnet to be processed, the present processes are suitable for various NdFeB Magnet.

Below by accompanying drawings and embodiments are combined, the technical solution of the utility model is described in further detail.? In specification and attached drawing 1, each system, structure and component are only symbolically described and show, but might not describe and show All features of real system, structure and component, such as and function or structure known to being not described in detail, to avoid unnecessary Details can make the utility model smudgy.It, can many modifications may be made as needed and increases it should be understood that in practical applications Subtract.

Terms used herein should be understood and interpreted as with well known to a person skilled in the art meanings.For having The term of particular meaning, will clearly be provided with definition mode in the description it is specifically defined, so as to directly and have no ambiguity Ground understands.In the whole instruction and claim, word " comprising " should be explained with open meaning, that is, " packet It includes but is not limited to ".

In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection ", " setting " should be done extensively Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected；It can be directly connected, middle part can also be passed through Part is indirectly connected；It can be wired electrical connection, radio connection, be also possible to wireless communication signals connection and be also possible to channel radio Believe signal connection, for the ordinary skill in the art, can understand specifically containing for above-mentioned term as the case may be Justice.

Specific embodiment of the utility model provides a kind of sprayed printed system, referring to Fig. 1, comprising: for containing the appearance of shape material Device, for placing the sample stage 6 of magnet sample, the spray gun including cavity 3 and nozzle 4, for adding for solidified sample surface material Thermal is below illustrated each device or component and connection relationship of Tthe utility model system one by one.

For containing the container of shape material, Raw material pail 1 as shown in Figure 1, the material contained is to be ejected into sample surfaces Material, which is sealing container, including oxygen-free gas entrance passes through gas piping and oxygen-free gas (such as argon gas) Feedway connection, to manufacture oxygen-free environment, prevents the material of powdery to be oxidized；And material outlet, pass through material Pipeline is connected to the chamber inlet of spray gun, and in order to smoothly complete the conveying of material, self-priming is provided between Raw material pail 1 and spray gun The material being located in container is pumped in the cavity 3 of spray gun by pump 2.In addition, entering in cavity 3 to control the unit time Inventory, pressure-regulating valve 7 is equipped on the pipeline between self priming pump 2 and cavity 3, thereby guarantees that the material that nozzle sprays Pressure and speed.

Sample stage 6, for furnishing multiple magnet samples, table top can be square or circle etc., which is set as can Free-moving sample stage, for example can be moved forward and backward and move up and down, in order to realize that the function can be set in the bottom of sample stage 6 Set slideway.It is assumed that magnet sample is rectangle, then sample can be located next to put one by one, to form longitudinal sample of marshalling Product column (longitudinal is the width direction of sample) and lateral sample row (being laterally the length direction of sample).

Spray gun, including cavity 3 and nozzle 4, for the material in container to be ejected into sample surfaces；Container and cavity 3 connect It connects, nozzle 4 is located at the top of sample stage 6, and sample stage 6 passes through in the lower section of transverse shifting Shi Huicong nozzle 4 or spray gun is in cross It can pass through into moving process from the top of sample stage 6.Nozzle 4 is removable installed in 3 end of cavity, it is preferable that the spray Mouth is platypelloid type, it is highly preferred that the length of the nozzle and the single sample is of same size.The nozzle and the sample The vertical range on surface is 3-5mm, it is preferable that the vertical range of the nozzle and the sample surfaces is 4mm.

Heating device is arranged side by side with the cavity 3 of spray gun and is spaced specific range, at spray printing on solidified sample platform 6 The material of sample surfaces after reason.It is preferred that heating device is pulse heater 5.

Preferably, the horizontal distance between the heating device and the nozzle is N times of the sample length, and N is whole Number, it is highly preferred that N >=2, it is further preferred that N is 2 or 3 or 4.

Preferably, the vertical range of the heating surface of heating device and sample surfaces is 8-12mm, so that both guaranteeing to be cured Required temperature, and neighboring samples will not be impacted.In addition, in order to guarantee adding for sample surface in sample stage traveling process The hot time maintains essentially in specific time, can be according to the heating surface size of sample size adjusting heating device, usual heating surface Dimensions is set as slightly larger than single sample size, and the mode of heating can also be automatically closed using interval specific time, it Automatically open the mode of heating device after a certain time afterwards.

The cavity is equipped with the circuit S.

For stability that is easy to operate and being heating and curing, heating device is fixedly connected by fixing piece with spray gun, i.e., Heating device is fixed on the cavity of spray gun, and keeps certain distance with spray gun cavity, so as to a certain piece of sample spray printing of waiting a little while,please After begin to warm up solidification again, the radiating surface of heating device is parallel with sample surfaces.

This system further includes the manipulator 8 for overturning sample, can be the achievable sample of any of automation The equipment of product turn-over.

The method that high-performance rare-earth permanent magnet material is prepared using above-mentioned sprayed printed system, comprising: spray printing step, vacuum heat treatment Step and tempering step, in which:

The spray printing step includes: that will be used to improve powder and the solidification of magnet performance using the spray gun of above-mentioned sprayed printed system The mixture of agent is ejected into the upper and lower surface of the sintered NdFeB magnet sample on sample stage, and then passes through the sprayed printed system Heating device form modified film layer for powder curing in the sintered NdFeB magnet surface is sprayed.

In the above-mentioned methods, the injection as a preferred implementation manner, in the spray printing step be in spray gun and Heating device is fixed and sample stage it is mobile under conditions of complete, or and sample stage in spray gun and heating device mobile It is completed under conditions of fixed.It is highly preferred that the injection is completed as follows: spray gun and heating dress first Set fixed, the sample stage passes through from below the nozzle of the spray gun sprayed in the horizontal direction, and spray gun completes the Sample stage continues to move along at least described N times of sample length of the distance after the injection work of one row's sample surfaces, then spray gun 180 degree is rotated as origin using the center of the spray gun with heating device while the sample stage moves in the vertical direction and the sample Product distance of same size so that sample stage second row sample when moving in the horizontal direction can pass through from below the nozzle, The subsequent sample stage moves in the horizontal direction makes second row sample on sample stage by thus completing the below the nozzle The injection work of two stock layout product surface materials, sample stage continues along original side after the injection work of spray gun completion second row sample surfaces To at least described N times of sample length of the distance of movement, then spray gun and heating device are rotated by origin of the center of the spray gun The sample stage moves in the vertical direction distance identical with the Sample Width so that sample stage is along level side to 180 degree simultaneously It can pass through to third stock layout product when movement from below the nozzle, and so on, the injection until completing last stock layout product Work.Preferably, N >=2, it is further preferred that N is 2 or 3 or 4.

In the above-mentioned methods, described as a preferred implementation manner, for improving the powder of magnet performance is according to M: F:C=(100-x-y): the molar ratio of x:y, after tri- kinds of raw material powders of M, F, C are mixed and are sieved under oxygen-free atmosphere It arrives；Wherein, one of M Dy, the fluoride of Tb, DyTb, Ho, Gd or oxide powder or a variety of, F are Nd or/and Pr Metal powder, one of C Cu, Al, Zn, Ga and Sn metal powder or a variety of, x=0-20 (such as 1,3,4,6,8,10, 12,14,15,16,18,19), y=0-40 (such as 1,4,7,10,12,15,18,20,23,26,30,33,36,39) and x and y It is not simultaneously zero.It is highly preferred that the granularity of tri- kinds of raw material powders of M, F, C is -120 mesh, the sieving was 120 meshes； Preferably, the oxygen-free atmosphere is nitrogen or argon atmosphere.

In the above-mentioned methods, as a preferred implementation manner, it is described for improve the powder of magnet performance with it is described solid The mass ratio of agent be 100:(1-5), the curing agent mainly be allow powder can be formed at a lower temperature one it is organic Shell, when subsequent processing just becomes gaseous state at high temperature and disappears；Easily have in final magnet when curing dose is excessive significant It remains and reduces magnetic property, cannot then form shell structurre when curing dose is very few or the structure of shell is imperfect, it is same to influence The raising of magnetic property；It is highly preferred that the curing agent is the mixture of polyurethane resin and diisocyanate, further preferably The mass ratio of ground, polyurethane resin and diisocyanate is 5:1, wherein diisocyanate plays solidification, and polyurethane resin rises To cured effect is assisted, network structure is formed after heating, is more conducively formed a film.It is further preferred that will spray in the sintering The temperature of the powder curing of NdFeB magnet surface is 120 DEG C, because when solidification temperature is too low, the shell structurre of curing agent formation Loosely, it is easy to fall off, and partially cured dose is not played solidification under temperature action；Resin solidification be by condensation, closed loop, The chemical reaction of addition or catalysis etc. is to make thermosetting resin that irreversible change procedure occur, when solidification temperature is excessively high, solidification Physical property after agent solidifies is deteriorated, and easily leads to shell cracking and falls side.Curing reaction belongs to chemical reaction, is influenced by solidification temperature Very big, temperature increases, and reaction speed is accelerated, and gel time shortens；But solidification temperature is excessively high, often declines condensate performance, institute With there are the upper limits of solidification temperature；The temperature for making curing rate and condensate performance compromise must be selected, as suitable solidification For temperature it is highly preferred that the cured time is 15-50s, curing time is too short, will affect the quality of film forming, such as film forming can not Uniformly, it cracks, fall off, final performance is inconsistent and effect is poor to will lead to；And curing time is too long, then can to solidify Efficiency is lower.

The powder for improving magnet performance with the mixture of the curing agent is uniformly mixed in Hun Fen mechanism It is obtained after 1-2 hour, is stored in closed container and injection pressure is the inert gas of 0.2-0.5Mpa in container, Such as argon gas.

In the above-mentioned methods, as a preferred implementation manner, before the spray printing step further include:

The pre-treatment step of sintered NdFeB magnet sample, comprising: Sintered NdFeB is processed into required shape and size, it Removing surface and drying are carried out afterwards；

Sample puts step, comprising: pretreated sintered NdFeB magnet sample is placed on sample stage, sample The tight between neighboring samples.

In the above-mentioned methods, it is preferable that the differently- oriented directivity of the sintered NdFeB magnet sample is with a thickness of 1-8mm；More preferably Ground, the removing surface are as follows: the NdFeB is put into degreasing tank and impregnates 10min to remove the greasy dirt of magnet surface, it is laggard Row first wash, pickling, second wash and ultrasonication, it is highly preferred that the pickling is to use dilute HNO₃Carry out acid 20- 45s is washed, the time of the ultrasonication is 20-45s；Preferably, the drying is using high wind rapid draing magnet Surface.

In the above-mentioned methods, it is preferable that the Parameter Conditions of the injection are as follows: the nozzle on spray gun is at a distance from sample surfaces For 3-5mm, preferably 4mm, the size (length) of nozzle is equal to Sample Width, and the movement speed of sample stage is 0.2-1mm/s.

In the above-mentioned methods, it is preferable that in the spray printing step, the heating device is pulse heater.

Preferably, the distance between the pulse heater and the nozzle are that (N is for N times of the NdFeB magnet length Integer), guarantee the sample of pulverized powder layer while guaranteeing that heating when solidifying does not influence the injection sample of front nozzle It is dry faster.

NdFeB magnet length direction is identical relative to the mobile direction of the nozzle as the NdFeB magnet；More preferably Ground, N 2,3 or 4；The material for being ejected into NdFeB magnet surface is solidified using pulse heater, due to PULSE HEATING Therefore the low energy consumption that device needs under conditions of consuming the less energy, quickly makes modified mixture solidification, prevents from changing Property mixture in shed powder and subsequent turn-over after be adhered between modified mixture and sample stage；PULSE HEATING simultaneously Device is set on the spray gun cavity in sprayed printed system, and position is fixed, easy to operate, and solidification effect is stablized, will not be because of the shifting of spray gun Relative positional relationship that is dynamic and changing heater and spray gun, is also not required to other drying equipment, therefore, can quickly and easily reach To solidification effect, it is more advantageous to the performance for improving magnet.

In the above-mentioned methods, as a preferred implementation manner, the modified film layer with a thickness of 40 μm of 5-, more preferably Ground, the modified film layer with a thickness of 25-30 μm.

In the above-mentioned methods, it is preferable that the vacuum heat treatment step, comprising: by the Sintered NdFeB with modified film layer Magnet sample carries out vacuum heat treatment, later furnace cooling；The vacuum degree of the vacuum heat treatment is less than 10^-3Pa (such as 8* 10^-4Pa、5*10^-4Pa、1*10^-4Pa), temperature be 670~950 DEG C (such as 680 DEG C, 700 DEG C, 750 DEG C, 800 DEG C, 850 DEG C, 900 DEG C, 930 DEG C), the time is 2~30 hours (such as 3h, 10h, 15h, 20h, 25h, 28h)；It is described to cool to temperature with the furnace Not higher than 50 DEG C (such as 40 DEG C, 35 DEG C, 30 DEG C).

In the above-mentioned methods, it is preferable that the tempering step, comprising: by the sintered NdFeB magnet sample after vacuum heat treatment Product carry out tempering, the temperature of the tempering be 420~640 DEG C (such as 430 DEG C, 450 DEG C, 500 DEG C, 550 DEG C, 600 DEG C, 630 DEG C), the time is 2~10 hours (such as 3h, 5h, 7h, 9h).

The utility model will be enriched in the compound of rare earth element by sprayed printed system and pure metal powder is ejected into NdFeB magnetic Body surface face simultaneously immediately solidifies the material for being ejected into NdFeB magnet surface, is handled later using vacuum high-temperature so that powder Rare earth compound and pure metal powder in film diffuse to main phase and the enrichment of Nd-rich phase juncture area in magnet, finally significantly mention The coercivity of high NdFeB magnet.

Polyurethane resin used in the following embodiment is RFE/RE polyurethane curing agent (originating from Bayer Bitterfeld GmbH), with six Asias Methyl diisocyanate (HDI) is the aliphatic polymeric isocyanate of base-material.Diisocyanate is toluene di-isocyanate(TDI) (IPDI).

Embodiment 1

Referring to Fig. 1, a kind of sprayed printed system, including the Raw material pail 1, self priming pump 2, spray chamber 3 for containing shape material, Raw material pail 1 It is connected by pipeline with self priming pump 3, self priming pump 2 is connected with spray chamber 3；Spray chamber 3 is equipped with for spraying the material in the spray chamber 3 (A is 3 turns of spray chamber in Fig. 1 for the nozzle 4 being mapped on sample and the cured pulse heater 5 of the material for will be ejected on sample 90 DEG C of schematic diagram).

Nozzle 4 is detachably arranged at the end of spray chamber 3, it is preferable that nozzle 4 is platypelloid type, it is preferable that the length of nozzle 4 With by sample stage sample it is of same size.

Pulse heater 5 is set on spray chamber 3 by the interconnection of bolt, nut, it is preferable that pulse heater 5 and spray The distance between mouth 4 is adjustable, such as adjusts PULSE HEATING by sliding of the control pulse heater 5 on spray chamber 3 The distance between device 5 and nozzle 4；Preferably, the distance between pulse heater 5 and nozzle 4 are long in Fig. 1 by injection sample Spend N times (N is integer) of direction (i.e. left and right directions), it is preferable that N >=2, it is highly preferred that N is 2-5.

Pressure-regulating valve 7 is equipped between self priming pump 2 and spray chamber 3, pressure-regulating valve 7 enters spray for adjusting in the unit time Material quantity in chamber 3.

Sprayed printed system further includes that opposite can move between sample stage 6 and spray chamber 3 for placing by the sample stage 6 of injection sample It is dynamic, it is preferable that sample stage 6 is movably.As shown in Figure 1, can orderly place multiple samples on sample stage 6.

Sprayed printed system further includes the manipulator 8 of the sample turn-over for will place on sample stage 6,

Nozzle 4 and pulse heater 5 are vertical with the sample surface on sample stage 6.

The work step of sprayed printed system is as follows:

It charges material into Raw material pail 1, argon gas is passed through into Raw material pail 1 by pipeline, the material in Raw material pail 1 passes through Self priming pump 2 is pumped into cavity 3, wherein pressure-regulating valve 7 between self priming pump 2 and cavity 3 can in the unit time into The material quantity entered in spray chamber 3 is adjusted.

Firstly, the sample stage 6 for being covered with sample moves along a straight line, so that the material in spray chamber 3 is ejected into sample by nozzle 4 First sample surfaces of the first row placed on platform 6, sample stage 6 is constantly mobile so that on sample stage 6 first row multiple samples Surface is continuously by spraying of material, wherein and preferably, the distance of pulse heater 5 and nozzle 4 is 2 times of sample length, therefore, When nozzle 4 starts to spray first row (bottom-up calculating) third sample (calculating from left to right), PULSE HEATING Device 5 is in right above first sample, start PULSE HEATING, to being sprayed on first sample of first row in the shorter time Material bed solidification passes through the sample of the continuous moving first row of sample stage consolidating by the injection of nozzle 4 and pulse heater 5 one by one Change, after the surface injection for completing a stock layout product, 1) it can be (i.e. vertical along width direction shown in FIG. 1 later with idle running return to origin To) distance of one Sample Width of stepping, do the sample injection that second row is completed in repetitive operation；It 2) can also be in the position with spray Point centered on mouth, opposite direction moves after spray gun and heating device are rotated 180 ° together, completes the sample injection of second row, with This analogizes, until upper sample is sprayed on all samples surface and completes to solidify, then manipulator 8 by the sample on sample stage 6 into Row turn-over, sprayed printed system start to carry out above-mentioned repetitive operation to the another side of sample, until all samples another side also by Sample and completion solidification in injection.

Embodiment 2

(1) according to TbF₃: the molar ratio of Nd:Al=95:2:3 weighs TbF3 powder (granularity: -120 mesh), metal Nd powder Above-mentioned powder is uniformly mixed by last (granularity: -120 mesh), metal Al powder (granularity: -120 mesh), and crosses 120 meshes, is obtained Mixed-powder, wherein powder mixing and sieving process carry out in a nitrogen environment.According to mixed-powder: (curing agent is curing agent Polyurethane resin and diisocyanate are obtained by mixing according to the mass ratio of 5:1) mass ratio of=100:2, to the mixing Curing agent is added in powder, modified mixture (i.e. the mixture of powder and curing agent) is obtained after mixing.

(2) commercial 40UH brands of sintered NdFeB magnet is machined, wherein differently- oriented directivity is with a thickness of 2mm, later Carry out removing surface, removing surface specifically: magnet is put into degreasing tank and impregnates 10min to remove the greasy dirt of magnet surface, With dilute HNO after cleaning surface with clear water₃(concentration 0.5wt%) pickling 20s, after washing and ultrasonication 20s, Using high wind rapid draing magnet surface；To obtain NdFeB magnet to be modified.

(3) sprayed printed system that modified mixture obtained by step (1) is passed through to embodiment 1, makes NdFeB magnet surface to be modified The Modified Membrane that (upper and lower surface) is formed with a thickness of 40 μm, specifically: modified mixture is pumped into spray gun chamber from Raw material pail by self priming pump In vivo, in spray gun cavity under the pressure effect of 0.25Mpa, modified mixture is ejected into sample stage from the nozzle of spray chamber end Each of upper placement NdFeB magnet to be modified upper surface, pulse heater is to being ejected into table on NdFeB magnet to be modified later The modification mixture in face carries out solidification 30s at 120 DEG C, and when spraying every stock layout product, the movement speed of sample stage is 0.2mm/s, arteries and veins The dimensions of the heating surface of heater is rushed slightly larger than each NdFeB magnet sample size to be modified, in sample stage moving process In, pulse heater is interval heating, sample length 10mm, if sample curing time reaches 30s, pulse heater Can be automatically closed, subsequent to guarantee curing time of next section of sample in 30s, pulse heater can specific time open after It is continuous to start to work (solidification)；Nozzle on spray gun is 4mm, the heating surface and sample of pulse heater at a distance from sample surfaces The distance on product surface is 10mm, and the size (length) of nozzle is equal to Sample Width, and the upper surface to all samples is sprayed and solidified NdFeB magnet to be modified is carried out turn-over by manipulator after the completion, is repeated the above steps, is obtained upper and lower surface and adhere to 40 μ m thicks (differently- oriented directivity of nozzle and the vertical and to be modified NdFeB magnet of NdFeB magnet surface to be modified is flat for the NdFeB magnet of Modified Membrane Row, sample stage moves in a straight line in the horizontal direction so that sample is by nozzle and heating device lower section, so that NdFeB magnet surface Form one layer of powder film for being rich in rare earth and pure metal powder).

(4) the NdFeB magnet of surface attachment Modified Membrane is placed on vacuum degree should be less than 10^-3Pa (such as 0.7*10^-3Pa Left and right) vacuum heat treatment furnace in, keep the temperature 6 hours under the conditions of 800 DEG C and be diffused heat treatment；It cools to the furnace not higher than 50 DEG C, then through 510 DEG C tempering 4 hours, obtain the rare earth permanent-magnetic material of the utility model.

Embodiment 3

(1) according to DyF₃: the molar ratio of Nd:Al=95:1:4 weighs DyF₃Powder, metal Nd powder, metal Al powder, Remaining operation and requirement are the same as (1) in embodiment 2.

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 48H, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.35mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 25 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining behaviour and requirement are made same In embodiment 2 (3).

(4) with (4) in embodiment 2.

Embodiment 4

(1) according to TbF₃: the molar ratio of Cu=95:5 weighs TbF₃Powder (- 150 mesh), Ni metal powder (- 150 mesh), mistake 150 meshes, remaining operation and requirement are the same as (1) in embodiment 2.

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 42M, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.27mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 30 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining operation and requirement are made With (3) in embodiment 2.

(4) holding temperature is 800 DEG C, remaining operation and requirement are made with (4) in embodiment 2.

Embodiment 5

(1) according to HoF₃: the molar ratio of Pr:Cu=97:1:2 weighs HoF₃Powder, metal Pr, Cu powder, remaining operation and It is required that with (1) in embodiment 2.

(3) by control sample stage travel speed 0.35mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 25 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining operation and requirement are made With (3) in embodiment 2.

(4) control holding temperature is 800 DEG C, remaining operation and requirement are made with (4) in embodiment 2.

Embodiment 6

(1) according to (DyTb) F₃: the molar ratio of Cu:Al=96:1:3 weighs (DyTb) F₃Powder, Ni metal powder, metal Al Powder, remaining operation and requirement are the same as (1) in embodiment 2.

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 52SH, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.27mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 30 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining operation and requirement are same In embodiment 2 (3).

(4) control holding temperature is 800 DEG C, remaining operation and requirement are the same as (4) in embodiment 2.

Embodiment 7

(1) according to GdF₃: the molar ratio of Cu=98:2 weighs GdF₃Powder, Ni metal powder, remaining operation and requirement are the same as implementation In example 2 (1).

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 35M+, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.35mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 25 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining operation and requirement are same In embodiment 2 (3).

Embodiment 8

(1) according to TbO₃: the molar ratio of Nd:Al=94:1:5 weighs TbO₃Powder, metal Nd powder, metal Al powder, Remaining operation and requirement are the same as (1) in embodiment 2.

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 48H+, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.27mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 30 μm；Remaining operation and requirement are the same as (3) in embodiment 2.

Embodiment 9

(1) according to DyO₃: the molar ratio of PrNd:Al=97:2:1 weighs DyO₃Powder, metal PrNd powder, metal Al powder End, remaining operation and requirement are the same as (1) in embodiment 2.

(3) by control sample stage travel speed 0.40mm/s, chamber pressure 0.25Mpa, in NdFeB magnet to be modified The Modified Membrane that surface is formed with a thickness of 23 μm, and condition of cure are as follows: carry out solidification 25s at 120 DEG C；Remaining operation and requirement are same In embodiment 2 (3).

Embodiment 10

(1) according to TbF₃: DyO₃: the molar ratio of Nd:Zn:Sn:Cu=46:48:2:1:1:2 weighs TbF₃And DyO₃Powder, Metal Nd powder, metal Zn, Sn, Cu powder, remaining operation and requirement are the same as (1) in embodiment 2.

(2) in addition to the trade mark of sintered NdFeB magnet is commercialization 46UH, with (2) in embodiment 2.

(3) by control sample stage travel speed 0.405mm/s, chamber pressure 0.25Mpa, in NdFeB magnetic to be modified The Modified Membrane that body surface face is formed with a thickness of 22 μm, and condition of cure are as follows: carry out solidification 20s at 120 DEG C；Remaining operation and requirement are same In embodiment 2 (3).

The performance of rare earth permanent-magnetic material prepared by embodiment 2-10 is tested, result such as the following table 1:

The performance of rare earth permanent-magnetic material prepared by 1 embodiment 2-10 of table

Comparative example 1

(1) with (1) in embodiment 3.

(2) with (2) in embodiment 3.

(3) by modified mixture obtained by step (1) by sprayed printed system when not having pulse heater in embodiment 1 (or Close sprayed printed system when pulse heater), so that NdFeB magnet surface to be modified is formed the two-sided modification with a thickness of 25 μm Film, specifically: modified mixture is pumped into spray gun cavity by self priming pump from Raw material pail, and 0.25Mpa pressure is made in spray gun cavity Under, modified mixture is ejected on sample stage from the nozzle of spray chamber end each of places NdFeB magnet surface to be modified, moves Dynamic sample stage terminates the spray printing of upper surface until the thicknesses of layers of sample upper surface is 25 μm, stands 20min, passes through machinery Handspring goes to another side, continues to carry out spray printing work according to the jet printing method of upper surface, after obtain upper and lower surface and adhere to 25 μ Then sample with film layer is put into baking oven and toasts 30 minutes at 120 DEG C by the NdFeB magnet of m thickness Modified Membrane.

(4) with (4) in embodiment 3.

The performance of rare earth permanent-magnetic material prepared by 3 the two of comparative example 1 and embodiment is tested, the two resulting materials Performance and injection used and cured implementation time result such as the following table 2:

The performance and the two of rare earth permanent-magnetic material prepared by 2 comparative example 1 of table and embodiment 3 complete all samples on sample stage Upper and lower surface injection and solidify the time used

Number	Br(kGs)	Hcj(kOe)	Time used
				Embodiment 3	13.625	25.43	8min
Comparative example 1	13.60	25.1	58min

Performance data in upper table 2 is the average value for the performance data that the 5 pieces of samples inspected by random samples on sample stage measure, wherein Time used in the present embodiment 3 is only injecting time 8min, and 1 used time of comparative example is then 58min, after having sprayed for upper surface The summation of time of repose 20min, baking time 30min, injecting time 8min.In addition, the scheme of comparative example 1 is also wanted after baking It is whole cooling, and the application does not need then to cool down.

It can be seen that from upper table 2, the complete obtained material property of mode being dried of all samples spray printing in comparative example 1 It, i.e. using resulting material property by the way of pulse heater heat drying, and is compared not as good as after 3 sample spray printing of embodiment The implementation time used in example 1 is carried out much larger than the implementation time used in embodiment 3, thus using the utility model sprayed printed system Spray printing is to have advantage that is high-efficient, having the performance of products obtained therefrom excellent again.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims

1. a kind of sprayed printed system characterized by comprising

For containing the container of shape material；

Spray gun, it is described for the material in the container to be ejected into including cavity and the nozzle for being set to the cavity end Sample surfaces；The container is connect with the cavity, and the nozzle is located at the top of the sample stage；

Heating device is arranged side by side and spaced apart, for solidifying spray printing on the sample stage with the cavity of the spray gun The material of sample surfaces after processing.

2. sprayed printed system according to claim 1, which is characterized in that the sample stage is the sample stage that can move freely, The sample that more than one piece surface needs spray printing to handle is set on the sample stage.

3. sprayed printed system according to claim 1, which is characterized in that be additionally provided between the container and the cavity certainly Sucking pump, for the material in the container to be pumped in the cavity of the spray gun；Between the self priming pump and the cavity Pipeline is equipped with pressure-regulating valve, and the pressure-regulating valve is for adjusting the unit time into the intracorporal inventory of the chamber.

4. sprayed printed system according to claim 1, which is characterized in that the container is supplied by gas piping and oxygen-free gas It is connected to device；The cavity is equipped with ultrasonic vibration apparatus.

5. sprayed printed system according to claim 1, which is characterized in that the heating device is pulse heater.

6. sprayed printed system according to claim 1-5, which is characterized in that the heating device by fixing piece with The spray gun is fixedly connected.

7. sprayed printed system according to claim 1, which is characterized in that the level between the heating device and the nozzle Distance is N times of the sample length, and N is integer and N >=2.

8. sprayed printed system according to claim 1, which is characterized in that the heating surface of the heating device and the sample table The vertical range in face is 8-12mm；The vertical range of the nozzle and the sample surfaces is 3-5mm.

9. sprayed printed system according to claim 1, which is characterized in that the spray gun is that can move freely spray gun；The spray Mouth is removable installed in the cavity end.

10. sprayed printed system according to claim 1, which is characterized in that the nozzle is platypelloid type, the length of the nozzle It is of same size with the single sample for 2-50mm.