WO2011136223A1 - 粒界拡散処理用塗布装置 - Google Patents

粒界拡散処理用塗布装置 Download PDF

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Publication number
WO2011136223A1
WO2011136223A1 PCT/JP2011/060169 JP2011060169W WO2011136223A1 WO 2011136223 A1 WO2011136223 A1 WO 2011136223A1 JP 2011060169 W JP2011060169 W JP 2011060169W WO 2011136223 A1 WO2011136223 A1 WO 2011136223A1
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Prior art keywords
sintered body
coating
ndfeb
sintered
screen
Prior art date
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Ceased
Application number
PCT/JP2011/060169
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English (en)
French (fr)
Japanese (ja)
Inventor
修 板谷
眞人 佐川
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Intermetallics Co Ltd
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Intermetallics Co Ltd
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Filing date
Publication date
Application filed by Intermetallics Co Ltd filed Critical Intermetallics Co Ltd
Priority to US13/643,215 priority Critical patent/US9884368B2/en
Priority to EP11775004.2A priority patent/EP2565885B1/en
Priority to KR1020127030834A priority patent/KR101375974B1/ko
Priority to CN201180020502.5A priority patent/CN102859621B/zh
Publication of WO2011136223A1 publication Critical patent/WO2011136223A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
    • B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/08—Machines
    • B41F15/0881—Machines for printing on polyhedral articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/16—Printing tables
    • B41F15/18—Supports for workpieces
    • B41F15/26—Supports for workpieces for articles with flat surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/36—Screens, Frames; Holders therefor flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/44—Squeegees or doctors
    • B41F15/46—Squeegees or doctors with two or more operative parts
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention applies a powder of R H (Dy and / or Tb) or R H compound to the sintered body when performing grain boundary diffusion treatment in the production of a NdFeB (neodymium / iron / boron) based sintered magnet.
  • the present invention relates to a coating apparatus.
  • NdFeB neodymium / iron / boron
  • NdFeB sintered magnets are voice coil motors such as hard disks, drive motors for hybrid and electric vehicles, motors for electric assist type bicycles, industrial motors, high-class speakers, headphones, permanent magnet magnetic resonance diagnostic devices, etc. Used in various products.
  • NdFeB with a thin shape (a shape with a small magnet thickness relative to the magnetization direction) that can be used at an environmental temperature of 100 ° C or higher, especially in automotive applications where the market has begun to expand rapidly in response to environmental issues in recent years.
  • Expectations for sintered magnets are increasing.
  • NdFeB-based sintered magnets have a problem that the magnetic characteristics are greatly lowered due to temperature rise, and irreversible demagnetization tends to occur at an environmental temperature of 100 ° C. or higher.
  • the coercive force H cJ (the value of the magnetic field H at which the magnetization J becomes 0 when the magnetic field H is reduced in the magnetization curve) is a predetermined value (for example, 15 kOe ⁇ 1.2 MA / m It is necessary to manufacture the above NdFeB-based sintered magnet. This is because if the coercive force is high, it is difficult to demagnetize and irreversible demagnetization is less likely to occur.
  • the replacement method As one of the methods for increasing the coercive force of the NdFeB-based sintered magnet, a part of Nd is replaced with RH (substitution method). However, the replacement method has a problem that the coercive force is increased while the residual magnetic flux density and the maximum energy product are decreased.
  • Patent Document 1 describes a method for producing an NdFeB-based sintered magnet using a grain boundary diffusion method.
  • the grain boundary diffusion method is a method of sintering a NdFeB-based alloy powder in which the crystal axes of each particle are oriented in a certain direction at a predetermined sintering temperature, and then producing a sintered body on the surface of the sintered body.
  • powder of R H or R H compound hereinafter referred to as “R H powder” is applied and heated at a temperature at which R H diffuses. This diffusion temperature is of course lower than the sintering temperature.
  • RH enters the inside of the sintered body through the grain boundary of the Nd 2 Fe 14 B crystal grains existing in the sintered body, and RH diffuses on the crystal grain surface.
  • the grain boundary diffusion method is used, a high coercive force can be obtained, and a decrease in residual magnetic flux density and maximum energy product can be suppressed.
  • the amount of RH which is a rare metal, can be reduced as compared with the substitution method, and the production cost of the sintered magnet can be reduced.
  • a rotating machine using a permanent magnet has a structure in which a coil and a permanent magnet face each other, and rotates a rotating shaft by generating a magnetic field in a direction opposite to the magnetization direction of the permanent magnet.
  • a permanent magnet used in a rotating machine usually has a shape in which the thickness in the magnetization direction is curved, but the permanent magnet having such a shape is when a magnetic field in the direction opposite to the magnetization direction is applied from the coil. , Demagnetization is likely to occur in the thin portion, and the driving torque is reduced.
  • Patent Document 2 when an NdFeB-based sintered magnet is manufactured, RH powder is applied to a portion where the thickness of the manufactured sintered body is thin, and the coercive force is partially increased by a grain boundary diffusion method. The degree of demagnetization is made similar. Thus, changing the coating pattern of the RH powder based on the use application and shape of the magnet is useful in that the amount of Dy and Tb used can be reduced and the cost can be reduced.
  • Patent Documents 1 and 2 as a method of applying the RH powder to the surface of the sintered body when the treatment by the grain boundary diffusion method is performed, the powder is baked in a slurry in which the RH powder is dispersed in water or an organic solvent.
  • immersion method immersing the ligature
  • spray method spraying the slurry with a spray
  • Patent Document 3 describes that a coating method by a barrel painting method is used when the grain boundary diffusion treatment is performed.
  • the barrel painting method is to form a pressure-sensitive adhesive layer on the surface of a member to be processed by causing a pressure-sensitive adhesive layer forming medium coated with a pressure-sensitive substance to collide with the material to be processed (here, “sintered body”).
  • This is a method for forming a powder film on a member to be treated by colliding a powder film forming medium having a powder (here, “ RH powder”) adhered to the member to be treated with a layer formed thereon.
  • a uniform powder layer can be formed on all surfaces of the sintered body without scattering the RH powder.
  • an object of the present invention is to provide a coating apparatus for grain boundary diffusion treatment that can be uniformly applied without excess and deficiency, and that can be easily automated and applied to a large number of sintered bodies.
  • the coating apparatus for grain boundary diffusion treatment made to solve the above problems is as follows.
  • An apparatus for applying a slurry of R H (Dy or / and Tb) or R H compound powder to the surface of a sintered body of NdFeB-based alloy powder a) a sintered body holding means for holding the sintered body; b) a screen having a transmissive portion corresponding to the pattern of the coating applied to the surface of the sintered body and transmitting the coating; c) The sintered body holding means and / or the screen so that the sintered body held by the sintered body holding means is brought into contact with the screen and the contacted sintered body is separated from the screen.
  • the above-described method using a screen (hereinafter referred to as “screen method”) is suitable for the application method of RH powder when performing grain boundary diffusion treatment from the following points.
  • -Even if there are a large number of sintered bodies, RH powder can be applied at the same time just by arranging them in parallel under the screen.
  • -RH powder can be uniformly applied to a predetermined surface of the sintered body.
  • the thickness that is, the amount of RH powder used
  • -Even when applying to a predetermined area of the sintered body in a predetermined pattern it is only necessary to provide a transmission part on the screen according to this pattern, and the same screen can be used repeatedly.
  • the screen method is an excellent coating method both in terms of reducing the amount of RH powder used and in industrial points such as mass production and automation. Therefore, by using the coating apparatus according to the present invention, it is possible to easily produce a high coercivity NdFeB-based sintered magnet while using a rare and expensive RH powder without waste.
  • the schematic longitudinal cross-sectional view which shows one Example of the coating device for the grain boundary diffusion process which concerns on this invention.
  • the top view which shows an example of the tray (a) and the crosspiece (b) which are a part of the coating device for grain boundary diffusion processes of a present Example.
  • the figure which shows the procedure of the coating process by the coating device for a grain boundary diffusion process of a present Example.
  • the top view which shows the example of the screen which is a part of the coating device for the grain boundary diffusion process of a present Example.
  • the longitudinal cross-sectional view which shows the example of the pattern of the coating material apply
  • an NdFeB-based sintered magnet is manufactured by performing grain boundary diffusion treatment on a sintered body of NdFeB-based alloy powder using the grain boundary diffusion-treatment coating apparatus shown in FIG. Will be explained.
  • the method for producing the sintered body is not particularly limited. For example, by using the method described in JP-A-2006-019521, a sintered body having high magnetic properties can be produced in a near net shape. Can do.
  • the grain boundary diffusion treatment coating apparatus is roughly divided into a work loader 10 and a print head 20 provided above the work loader 10.
  • the work loader 10 includes a base 11 that can move in the lateral direction, a lift 12 that can move in the vertical direction with respect to the base 11, a beam 13 that is detachably mounted on the lift 12, and an attachment / detachment on the beam 13. It has a tray 14 that can be placed thereon, a supporter 15 provided on the upper surface of the tray 14, and a magnet clamp 16 that can move up and down.
  • the print head 20 includes a screen 21, and a squeegee 22 and a return scraper 23 that can move while contacting the upper surface of the screen 21.
  • the screen 21 is provided with a transmission part 211, and in this embodiment, the coating R is applied to the surface of the sintered body S through the transmission part 211.
  • the coated material R for example, an RH oxide or fluoride fine powder dispersed in an organic solvent to form a slurry can be used.
  • a screen made of polyester is used for the screen 21, it is easy to become familiar with the surface of the sintered body S when applying the coated material R to the sintered body S, so that the finish of the coating can be improved.
  • stainless steel can be used when importance is attached to the durability of the screen 21, for example.
  • the tray 14 and the supporter 15 are jigs for mounting the sintered body S and fixing the position.
  • the tray 14 is provided with six holes 141 for accommodating the sintered body S and four holes for the horizontal direction.
  • a support portion 142 is provided on the lower surface of the hole 141, and the sintered body S is placed so as to be hooked on the support portion 142, one by one from the upper surface of the tray 14 into each hole 141.
  • the supporter 15 is for filling a step between the sintered body S and the tray 14 so that the screen 21 is not damaged.
  • the thickness of the supporter 15 is slightly smaller than the upper surface of the sintered body S placed on the tray 14 (about 0.1 to 0.2 mm) so as not to interfere with the application of the applied material to the sintered body S. ) Is set to be on the lower side.
  • the crosspiece 13 is for preventing the tray 14 from bending, and an opening 131 is provided corresponding to the position of the hole 141 of the tray 14 placed on the crosspiece 13 (FIG. 2 (b)).
  • First concave portions 132 are provided at the four corners of the upper surface of the crosspiece 13
  • first convex portions 143 are provided at the four corners of the lower surface of the tray 14 corresponding to the positions of the first concave portions 132.
  • the sintered bodies S are placed one by one in the holes 141 of the tray 14, the supporter 15 is put on the tray 14, and then the tray 14 is fixed on the crosspiece 13. And the 2nd convex part 133 of the crosspiece 13 is engage
  • the base 11 is moved directly below the print head 20 (FIG. 3B), and the lift 12 is raised until the upper surface of the sintered body S reaches the position of the lower surface of the screen 21 (c).
  • the coated material R is placed on the upper surface of the screen 21, and the squeegee 22 is moved while being in contact with the upper surface of the screen 21 (c).
  • the application R passes through the transmission part 211 of the screen 21 and is applied to the upper surface of the sintered body S.
  • the lift 12 is lowered, and the return scraper 23 is slid on the upper surface of the screen 21 to disperse the coating material R over the entire upper surface of the screen 21.
  • the application R remaining on the upper surface of the screen 21 is collected (d). Since the recovered coated material R contains expensive RH , the cost can be reduced by reusing it.
  • the base 11 is moved away from the print head 20 and the magnet clamp 16 is lowered (e).
  • the sintered body S is then placed on the tray 14 with the surface facing up, and the steps described so far are performed. Try again.
  • the coated surface may be only one surface.
  • the sintered compact S After application
  • FIG. 4 a thing as shown in FIG. 4 can be used.
  • the pattern of the coated material R applied on the sintered body S is as shown in FIG.
  • FIG. 5A shows an example in which the coated material R is applied to two opposite ends of the sintered body S.
  • a permanent magnet used in a rotating machine such as a motor tends to be demagnetized by applying a magnetic field opposite to the magnetization direction to an end portion in the rotation direction at the time of starting, and the output tends to decrease with time.
  • NdFeB system sintered magnet used for such a use it is effective to raise the coercive force of an edge part.
  • the coating patterns are as shown in FIGS. 5B, 5C, and 5D, respectively.
  • the coating material R can be easily and uniformly applied on the sintered body S in various patterns by simply changing the screen 21 having different transmission portions 211 according to the application of the magnet. Can do.
  • the coated material R can be applied to the entire surface of the sintered body S.
  • the coating (printing) surface of the sintered body S is other than a flat surface, it can be easily handled by processing the screen in accordance with the shape of the coating surface.
  • coating materials R 1 and R 2 having different components and ratios are applied to different regions as shown in FIG. 5 (e).
  • the coating R 1 at the end contains Tb having a high effect of improving the coercive force, and the coated R 2 at the center.
  • Dy which is cheaper than Tb
  • the overall coercive force can be improved while suppressing the increase in cost as much as possible.
  • the contents of Tb and Dy can be changed in each region.
  • FIGS. 4C and 4D application as shown in FIG. 5F is also possible.
  • FIG. 6 In order to avoid this, for example, first, after applying one main surface as shown in FIG. 5 (b) using the screen of FIG. 4 (b), the sintered body S is turned over, and FIG. ) Is applied to the support portion 142 of the tray 14 to apply the other main surface (FIG. 6). By doing in this way, since the grain boundary diffusion method can be heated while the sintered body S is placed on the tray 14, it is possible to improve the work efficiency in manufacturing the NdFeB-based sintered magnet. It becomes.
  • the sintered body S when applying the coating R to the entire main surface, the sintered body S may be supported by a point-shaped support portion 142A as shown in FIG. Thereby, since the contact location of the application surface of the sintered compact S and tray 14A can be made small, the waste of the application material R by the application material R adhering to tray 14A can be reduced. Moreover, after apply

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Powder Metallurgy (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Screen Printers (AREA)
PCT/JP2011/060169 2010-04-27 2011-04-26 粒界拡散処理用塗布装置 Ceased WO2011136223A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/643,215 US9884368B2 (en) 2010-04-27 2011-04-26 Applicator for grain boundary diffusion process
EP11775004.2A EP2565885B1 (en) 2010-04-27 2011-04-26 Coating apparatus for grain-boundary diffusion treatment
KR1020127030834A KR101375974B1 (ko) 2010-04-27 2011-04-26 입계확산처리용 도포장치
CN201180020502.5A CN102859621B (zh) 2010-04-27 2011-04-26 晶界扩散处理用涂敷装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010101787A JP5406112B2 (ja) 2010-04-27 2010-04-27 粒界拡散処理用塗布装置
JP2010-101787 2010-04-27

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US (1) US9884368B2 (https=)
EP (1) EP2565885B1 (https=)
JP (1) JP5406112B2 (https=)
KR (1) KR101375974B1 (https=)
CN (1) CN102859621B (https=)
WO (1) WO2011136223A1 (https=)

Cited By (7)

* Cited by examiner, † Cited by third party
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WO2014148354A1 (ja) 2013-03-18 2014-09-25 インターメタリックス株式会社 粒界拡散処理用治具及び該粒界拡散処理用治具の収容具
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DE102017125326A1 (de) 2016-10-31 2018-05-03 Daido Steel Co., Ltd. Verfahren zum Herstellen eines RFeB-basierten Magneten
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EP2565885A1 (en) 2013-03-06
EP2565885A4 (en) 2016-06-22
JP5406112B2 (ja) 2014-02-05
KR101375974B1 (ko) 2014-03-18
KR20130041809A (ko) 2013-04-25
US9884368B2 (en) 2018-02-06
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