CN105448511A - Manufacturing method for cooling fan motor magnet - Google Patents
Manufacturing method for cooling fan motor magnet Download PDFInfo
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- CN105448511A CN105448511A CN201410435986.5A CN201410435986A CN105448511A CN 105448511 A CN105448511 A CN 105448511A CN 201410435986 A CN201410435986 A CN 201410435986A CN 105448511 A CN105448511 A CN 105448511A
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Abstract
The invention provides a manufacturing method for a cooling fan motor magnet. The manufacturing method comprises the following steps: (a) a dosing step, wherein magnetic powder, indirect materials, and epoxy resin (0.5-3.0wt%) are stirred and mixed, and the surface of the magnetic material is coated with the epoxy resin; (b) a forming step, wherein the mixed magnetic powder is pressed into desired magnet shapes by dies; and (c) a composite type coating layer, wherein the formed magnet is coated with a first film layer with the thickness of about 1-20 microns by electro-deposition painting treatment; a second film layer with the thickness of about 1-20 microns is formed on the film layer by spraying treatment; therefore, the magnet coating uniform in thickness without a protruding outer diameter is realized; deviation in the motor assembling is prevented, so that the dynamic balance of the motor blades is relatively good without generating vibration and noise, and the like.
Description
Technical field:
The present invention relates to the manufacture of magnetite, more specifically relate to the manufacture method of radiator fan motor magnetite.
Background technology:
Modern electronics (such as, notebook computer) development trend of " light, thin, short, little " makes the space in electronic installation more and more little, electronic building brick in it also done less and be arranged each other closer to, the accumulation of heat in electronic installation is more serious, and this makes heat dissipation problem more fractal key.Use radiator fan to produce air-flow to use the torrid zone produced by electronic building brick and walk and impel cross-ventilation to be heat dissipation common in current electronic installation to reach the effect of heat radiation.
Radiator fan is mainly driven by fan motor, and fan motor can be divided into according to its bearing arrangement: ball-bearing fan motor and FDB structure fan motor (UFF) two kinds, wherein FDB structure fan motor is particularly suitable for the radiating requirements of the electronic installations such as thin type computer, PDA, game machine.No matter be that a kind of fan motor, it all comprises a magnetite as one of main composition component, and the quality of magnetite quality directly has influence on the performance of fan motor.
Traditional radiator fan motor magneto system making method be use single electricity process or single spray treatment to manufacture magnetite, but, these two kinds of process can respectively because electricity the needle point conductive effect of process make magnetite external diameter surface edges and corners form protruding F (as shown in Figure 1); And because paint vehicle levelling and vertical stream pull traction during spray treatment, cause the thickness of edges and corners, surface, magnetite inside and outside footpath lower, cause the corrosion resistance (hot and humid test) of magnetite in edges and corners poor.In addition, electricity process also there is the problem that hanging point (conductive contact point) reveals material and membrane thickness unevenness.And traditional spray treatment is because must carry out positive and negative spraying, it is coated and because of the problem of low the caused processing cost costliness of paint vehicle utilization rate to carry out magnetite.
Above-mentioned these are present in problem in classical production process and still can satisfy the demands when existing electronic installation is not too high for the quality requirement of fan motor, but under the trend of electronic installation thin type, requirement for fan motor part quality also improves many relatively, thus allows the problems referred to above be present in classical production process under more harsh quality requirement, become the problem being badly in need of solution.
Because the above-mentioned shortcoming of conventional fan motor magneto system making method, in the field of fan motor magnetite, for producing with lower cost, there is uniform films layer thickness, the method for magnetite of revealing material and better out of roundness and concentricity without hanging point also exists demand always.
Summary of the invention:
The object of the invention is to provide a kind of manufacture method that effectively can solve the shortcoming be present in above-mentioned conventional fan motor magnetite.
Of the present invention one towards providing a kind of method manufacturing radiator fan motor magnetite, it comprises: (a) batching step, magnetic, secondary material, epoxy resin (0.5 ~ 3.0wt%) is carried out being uniformly mixed and epoxy resin is coated magnetic material surface; B () forming step, is molded into wanted magnetite shape by the magnetic that this process mixes; And (c) combined type coating step, first with electricity the first rete that application process applies one deck about 1 ~ 20 micron thickness on the magnetite through overmolding, and then on this rete, form the second rete of one about 1 ~ 20 micron thickness again with spray treatment.
Preferably, this batching step comprises further, with wet type granulation or the mixing mode of dry type, the magnetic through mixing is carried out granulation.
Preferably, this wet type granulation is first is solvent with acetone, and epoxy resin is dissolved into sol solution, then in the mode stirred, is spread evenly across on magnetic material by epoxy resin.
Preferably, this dry type is mixing is first by magnetic, secondary material and epoxy resin Homogeneous phase mixing, again said mixture is put in mixing cylinder body, being heated to 80 ~ 130 DEG C via cylinder body impels epoxy resin softening and utilize roller bar to rotate relatively to pressurize to powder, reaches the object be spread evenly across by epoxy resin on magnetic material.
Preferably, this forming step comprises further and toasts by thermal convection, infrared radiation, electromagnetic microwave mode, and make epoxy resin produce cross-linking reaction, magnetite produces bond strength, and this process is the cure process of magnetite.
Preferably, baking temperature, between 150 ~ 230 DEG C, higher than the curing temperature of epoxy resin, makes epoxy resin produce curing cross-linking reaction.
Preferably, this electricity application pack processing and is contained: front water-washing step, utilize pure water spray or embathe and ultrasonic waves washing remove the dirt of magnetite on the surface and in slot; Surface modification step, carries out surface adjustment with surface conditioner to the surface of magnetite; Phosphating step, implements phosphorating treatment by the mode of Phosphating Solution dipping to magnetite, in order to the phosphate crystal film of the deposited on silicon last layer densification at magnetite, can strengthen adhesive force and the corrosion resisting property of film; Secondary cleaning step, washes away the Phosphating Solution on magnetite with pure water; Electricity application step, will through parkerized magnetite be placed in electricity groove carry out electricity and application process; And cleaning and baking procedure, in order to by magnetite electricity wet film solidification.
Preferably, this electricity application step is application parameter to implement with following electricity:
1) electricity liquid Ph value: be about 5.6 ~ 6.4 under ability cathode electrophoresis condition, under anodic electrophoresis condition, be about 7.5 ~ 8.5;
2) tank liquor composition admittedly: about 16% ~ 25%;
3) electricity liquid electrical conductivity: about 1200 ~ 1800 μ s/cm;
4) electricity liquid temp: about 28 ~ 32 DEG C;
5) electrophoresis time: about 2 ~ 3 minutes; And
6) ultimate ratio: being 1:1 when using anodic electrophoresis paint, is then 4:1 when using cathode electrodip painting, and via adjustment voltage control electricity the thickness of application rete.
Preferably, this spray treatment comprises:
Spraying process, uses rotating type spraying mode or reciprocating spraying method to be carried through below spray gun spraying group by magnetite with conveyer belt and carries out spraying operation to magnetite, use and be sprayed on magnetite by paint vehicle; And
Baking procedure, with the temperature of 160 DEG C ~ 200 DEG C baking 20 ~ 40 minutes.
Preferably, this rotating type spraying meets restraint-type: the mode of 50V≤D ω carries out the spraying of magnetite, and wherein V is conveyer belt pace, and D is the coating cloud spraying swath of spray gun, and ω is that spray gun spraying group rotates revolution.
Preferably, this reciprocating spraying is to implement spraying operation with two spray guns back and forth spraying group, and be meet restraint-type: the mode of 5V≤12Df carries out the spraying of magnetite, wherein V is conveyer belt pace, D is the coating cloud spraying swath of spray gun, and f is the frequency that spray gun spraying group is reciprocally displaced on the direction orthogonal with conveyer belt direction of advance.
Preferably, this reciprocating spraying is to implement spraying operation with single spraying rifle back and forth spraying group, and be meet restraint-type: the mode of 5V≤6Df carries out the spraying of magnetite, wherein V is conveyer belt pace, D is the coating cloud spraying swath of spray gun, and f is the frequency that spray gun spraying group is reciprocally displaced on the direction orthogonal with conveyer belt direction of advance.
Preferably, emanation spraying paint used in this spray treatment is poly cyanamid resinoid or acrylic resin.
Of the present invention another towards the radiator fan motor magnetite provided manufactured by a kind of above-mentioned manufacture method of the present invention.
Accompanying drawing illustrates:
Fig. 1 is a schematic perspective view, and its magnetite shown manufactured by conventional fan magneto system making method can form the shortcoming of protruding F on magnetite external diameter surface.
Fig. 2 is a flow chart, and its display is according to the key step of a radiator fan motor magneto system making method of inventive embodiment.
Fig. 3 is a flow chart, the sub-step of its display batching process.
Fig. 4 is a flow chart, the sub-step of its display forming processes.
Fig. 5 is a flow chart, its display electricity the sub-step of application process.
Fig. 6 is a flow chart, the sub-step of its display spray treatment.
Embodiment:
With reference to the preferred embodiment shown in Fig. 2-6, radiator fan motor magneto system making method 10 of the present invention is described.
As shown in Figure 2, radiator fan motor magneto system making method 10 of the present invention mainly comprises batching process 12, forming processes 14 and combined type coating process 16, wherein this combined type coating process 16 comprise further first electricity the program of application process 18 spray treatment 20 again.
Magnetic is mainly deployed into the raw material manufactured needed for fan magnetite by batching process 12.As shown in Figure 3, when preparing burden process 12, first with ball milling machine for decomposing and smashing by broken for magnetic solution and sieve (step 121) with the screen cloth of 80 ~ 150 meshes (mesh).Then, the magnetic apparent magnetism grade difference through separating broken and screening is needed carry out adding secondary material (such as, brown iron oxide or stainless steel powder etc.) mixing to reach the object (step 122) of falling magnetic.Next carry out granulation step, when carrying out wet type granulation, first the epoxy resin of 0.5 ~ 3wt% and acetone are modulated into sol solution, in order to be coated with one deck epoxy resin (step 123, this step is also called as impregnation process) outward at magnetic.Next, the mode that magnetic and the sol solution through mixing is stirred with wet type granulation by magnetic granulation (step 124), in order to be coated with the epoxide-resin glue of the anti-oxidant and tool cohesive action of one deck on the surface of magnetic.Or, also the mode that dry type can be used mixing is by the first Homogeneous phase mixing (step 125 of epoxy resin of magnetic, secondary material and 0.5 ~ 3wt%, this step is mixed glue process) again said mixture is put in mixing cylinder body, being heated to 80 ~ 130 DEG C via cylinder body impels epoxy resin softening and utilize roller bar to rotate relatively to pressurize to powder, reaches the object (step 126) be spread evenly across by epoxy resin on magnetic material.Finally, then the stearic acid adding about 0.2wt% be lubricant fully mix and with the screen cloth of 60 ~ 150 meshes sieve get rid of because of Electrostatic Absorption, mixer or stearic acid be lubricant with impurity after namely complete batching process (step 127).
As shown in Figure 4, ensuing forming processes 14 mainly comprises the sub-steps such as compression molding step 142, finished product cure step 144 and finished product grinding steps 146.In step 142, the magnetic through batching process is poured in oil pressure or mechanical type forming machine die cavity, is wanted magnetite shape via compression molding, such as, and ring-type, tile.Next, infrared ray baking box, hot air type baking box or electromagnetic microwave baking machine is used to carry out cure process by infrared radiation, thermal convection or electromagnetic microwave mode to by shaping magnetite respectively in step 144.When using infrared ray baking box to carry out cure process, temperature is preferably set in 200 ~ 250 DEG C, implements the baking process of 5 ~ 10 minutes.When using hot air type baking box to implement cure process, temperature is preferably set in 160 ~ 200 DEG C, implements the baking process of 60 ~ 120 minutes.Then, the magnetite through cure process accepts milled processed to remove the burr produced on magnetite because of factors such as mould assembly gaps in compression molding process in step 146.The 3D oscillating mill that this milled processed can use industry known is implemented to carry out for about 20 minutes with the vibration frequency of about 30 ~ 40Hz with the use of high alumina porcelain stone grinding material that is spherical or triangle column again.After carrying out deburring grinding, then can carry out height grinding to obtain magnetite height accurately with dual-end face grinder; And external diameter centreless grinding can be carried out to obtain better out of roundness and concentricity.
Magnetite after forming processes, then in the process of step 16 receptive coating.Be different from the process of traditional magnetite coating only to implement single electricity and application or single spray treatment, in the methods of the invention, the coating process of magnetite be adopt as illustrated in fig. 2 comprise simultaneously electricity the combined type coating process of application and spray-coating implement.In detail, combined type coating of the present invention process 16 first with electricity the rete that application process 18 applies one deck about 1 ~ 20 micron thickness on magnetite, and then the mode of the rete forming one about 1 ~ 20 micron thickness with spray-coating process 20 again on this rete is carried out.
As shown in Figure 5, electricity application process 18 contain front water-washing step 181.In this step, first be attached to dust on magnetite surface and foreign matter with spray or the mode pure water cleaning hanging of embathing magnetite on the conveyor belt to dispose, then magnetite surface and slot are disposed in ultrasonic washer pond dirt with the ultrasonic waves of 28 ~ 40kHz frequency, by magnetite is put into then.Then, with surface conditioner (such as, oxalic acid surface conditioner and titanium glue surface conditioner), surface adjustment process (step 182) is carried out to the surface of magnetite.Afterwards, in the mode of flooding, phosphorating treatment (step 183) is implemented to magnetite, in order to the phosphate crystal film of the deposited on silicon last layer densification at magnetite, adhesive force and the corrosion resisting property of film can be strengthened.Magnetite after phosphorating treatment then carries out secondary cleaning with three road pure water and by dry for water droplet (step 184), in order to effectively to wash away phosphatization scum silica frost on magnetite and Phosphating Solution, in painting tankage to avoid impurity being brought into follow-up electricity.Next, will through parkerized magnetite be placed in electricity groove carry out electricity and application process (step 185).According to a preferred embodiment of the present invention, it is application parameter to implement according to following electricity that this electricity application process:
1) electricity liquid Ph value: be about 5.6 ~ 6.4 under ability cathode electrophoresis condition, under anodic electrophoresis condition, be about 7.5 ~ 8.5;
2) tank liquor composition admittedly: about 16% ~ 25%;
3) electricity liquid electrical conductivity: about 1200 ~ 1800 μ s/cm;
4) electricity liquid temp: about 28 ~ 32 DEG C;
5) electrophoresis time: about 2 ~ 3 minutes; And
6) ultimate ratio: being 1:1 when using anodic electrophoresis paint, is then 4:1 when using cathode electrodip painting, and via adjustment voltage control electricity the thickness of rete.Next, the electricity remained on the surface of magnetite liquid with pure water clean up and water dried up prevent to occur washmarking (step 186) when follow-up baking.Finally, by through electricity the magnetite of coating process fully toast, film is fully solidified (step 187).
Magnetite through electricity can take off from conveyer belt, to carry out follow-up spray treatment after application process.
As shown in Figure 6, spray treatment 20 comprises spraying process 201 and baking procedure 202 two steps.According to preferred embodiment of the present invention, spraying process 201 can have two kinds of modes to implement, that is: rotating type spraying and reciprocating spraying.
In rotating type spraying process, magnetite is placed on carrying flaking dish, then bearer network dish is placed on the conveyer belt that advances with speed V (m/min), use below the spray gun revolution spraying group that to be conducted through by magnetite and to rotate with rotary speed ω (RPM), wherein spray gun sprays paint vehicle with coating cloud spraying swath D (cm).Preferably, rotating type spraying process is to meet: the mode of this restraint-type of 50V≤D ω is to carry out the spraying of magnetite.
And, in reciprocating spray treatment, the bearer network dish of carrying magnetite is transferred band to be carried through with speed V (m/min) and to move back and forth in below two spray guns back and forth spraying group on the direction orthogonal with conveyer belt direction of advance or single spraying rifle back and forth spraying group with reciprocating frequence f (secondary/second), and wherein spray gun sprays paint vehicle with coating cloud spraying swath D (cm).Preferably, the reciprocating spray treatment of two spray gun is to meet: the mode of this restraint-type of 5V≤12Df sprays; And the reciprocating spray treatment of single spraying rifle is preferably to meet: the mode of this restraint-type of 5V≤6Df is to carry out the spraying of magnetite.
Emanation spraying paint used in spray treatment is poly cyanamid resinoid or acrylic resin.
Afterwards, the magnetite through spraying is placed in baking box can complete whole magnetite fabrication schedule with the temperature of 160 ~ 200 DEG C baking 20 ~ 40 minutes (step 202).
The present invention can reach the effect and benefit that are better than conventional art:
Because the manufacture method of radiator fan motor magnetite of the present invention has used composite coating technique, prior to magnetite surface carry out electricity process form the rete of 1 ~ 20 micron thickness, spray treatment is carried out again outside it, magnetite is put on bearer network dish during spraying, therefore now spray gun ejection atomization paint gas evenly be attached to above-mentioned electricity and on paint film, can reach the following effect and the benefit that are better than conventional art:
A. workpiece is positioned over its conveyer belt speed (v) of ﹐ Shang load plate, rotary spray gun group rotation per minute revolution (ω) and coating cloud spraying swath width (D) by restraint-type requirement or the walking speed (v) of work piece carrying tray, reciprocating pair of spray gun or single spraying rifle roundtrip frequency and coating cloud spraying swath width (D) by restraint-type requirement spraying, can obtain the uniform benefit of paint film;
B. electricity the hanging point of product (conductive contact point) reveal material and membrane thickness unevenness problem can via rear spraying Resolving probiems, and coating for primary coat with electricity, spray-on coating is that face is coated with, and it is comparatively cheap that emanation spraying paint consumes expense, and end face and side uniform film thickness and corrosion resistance coating promote; And
C. because of composite coating uniform film thickness and without external diameter protrude problem, therefore magnetite when motor assembly operation (, magnetite is assembled to flabellum iron-clad), off normal can not be produced, so the more traditional coating process of motor flabellum computing ballance correction is little, not easily generation vibration and noise problem (because paint film is without protruding and its uniform film thickness, therefore can obtain better magnetite out of roundness and concentricity.
Although the manufacture method of radiator fan motor magnetite of the present invention is in being above illustrated with reference to preferred embodiment shown in the drawings, this does not represent that the present invention is only confined to the above described and treatment step shown in accompanying drawing, process parameter, equipment and structure.All these and other possible amendment and change all drop in the true scope of the present invention that defined by claims.
Claims (13)
1. manufacture a method for radiator fan motor magnetite, it is characterized in that, comprise:
A () batching step, is undertaken being uniformly mixed by magnetic, secondary material, epoxy resin (0.5 ~ 3.0wt%) and epoxy resin is coated magnetic material surface;
B () forming step, is molded into wanted magnetite shape by the magnetic that this process mixes; And
C () combined type coating step, first with electricity the first rete that application process applies one deck about 1 ~ 20 micron thickness on the magnetite through overmolding, and then on this rete, form the second rete of one about 1 ~ 20 micron thickness again with spray treatment.
2. the as claimed in claim 1 method manufacturing radiator fan motor magnetite, is characterized in that, this batching step comprises further, with wet type granulation or the mixing mode of dry type, the magnetic through mixing carried out granulation.
3. the as claimed in claim 2 method manufacturing radiator fan motor magnetite, is characterized in that, this wet type granulation is solvent with acetone, epoxy resin is dissolved into sol solution, then in the mode stirred, is spread evenly across by epoxy resin on magnetic material; And dry type mixing be first by magnetic, secondary material and epoxy resin Homogeneous phase mixing, again said mixture is put in mixing cylinder body, being heated to 80 ~ 130 DEG C via cylinder body impels epoxy resin softening and utilize roller bar to rotate relatively to pressurize to powder, reaches the object be spread evenly across by epoxy resin on magnetic material.
4. the method manufacturing radiator fan motor magnetite as claimed in claim 1, it is characterized in that, this forming step comprises further and toasts by thermal convection, infrared radiation, electromagnetic microwave mode, epoxy resin is made to produce cross-linking reaction, magnetite produces bond strength, uses and carries out cure process to magnetite.
5. the method manufacturing radiator fan motor magnetite as claimed in claim 4, is characterized in that baking temperature is between 150 ~ 250 DEG C, higher than the curing temperature of epoxy resin, makes epoxy resin produce curing cross-linking reaction.
6. the method manufacturing radiator fan motor magnetite as claimed in claim 1, it is characterized in that, this electricity application pack processing and is contained:
Front water-washing step, utilize pure water spray or embathe and ultrasonic waves washing remove the dirt of magnetite on the surface and in slot;
Surface modification step, carries out surface adjustment with surface conditioner to the surface of magnetite;
Phosphating step, implements phosphorating treatment by the mode of Phosphating Solution dipping to magnetite, in order to the phosphate crystal film of the deposited on silicon last layer densification at magnetite, can strengthen adhesive force and the corrosion resisting property of film;
Secondary cleaning step, washes away the Phosphating Solution on magnetite with pure water;
Electricity application step, by be placed in through parkerized magnetite comprise electricity the electricity of liquid, the solid composition of tank liquor and electrode groove and carry out electricity and application process; And
Cleaning and baking procedure, in order to by magnetite curing of coatings.
7. the method manufacturing radiator fan motor magnetite as claimed in claim 6, it is characterized in that, it is application parameter to implement with following electricity that this electricity application step:
1) electricity liquid Ph value: be about 5.6 ~ 6.4 under ability cathode electrophoresis condition, under anodic electrophoresis condition, be about 7.5 ~ 8.5;
2) tank liquor composition admittedly: about 16% ~ 25%;
3) electricity liquid electrical conductivity: about 1200 ~ 1800 μ s/cm;
4) electricity liquid temp: about 28 ~ 32 DEG C;
5) electrophoresis time: about 2 ~ 3 minutes;
6) ultimate ratio: being 1:1 when using anodic electrophoresis paint, is then 4:1 when using cathode electrodip painting, and via adjustment voltage control electricity the thickness of application rete.
8. the method manufacturing radiator fan motor magnetite as claimed in claim 1, it is characterized in that, this spray treatment comprises:
Spraying process, uses rotating type spraying mode or reciprocating spraying method to be carried through below spray gun spraying group by magnetite with conveyer belt and carries out spraying operation to magnetite, use and be sprayed on magnetite by paint vehicle; And
Baking procedure, with the temperature of 160 DEG C ~ 200 DEG C baking 20 ~ 40 minutes.
9. the method manufacturing radiator fan motor magnetite as claimed in claim 8, it is characterized in that, this rotating type spraying meets restraint-type: the mode of 50V≤D ω carries out the spraying of magnetite, wherein V is conveyer belt pace (m/min), D is the coating cloud spraying swath (cm) of spray gun, and ω is spray gun spraying group rotation revolution (RPM) per minute.
10. the method manufacturing radiator fan motor magnetite as claimed in claim 8, it is characterized in that, this reciprocating spraying is to implement spraying operation with two spray guns back and forth spraying group, and be meet restraint-type: the mode of 5V≤12Df carries out the spraying of magnetite, wherein V is conveyer belt pace (m/min), D is the coating cloud spraying swath (cm) of spray gun, and f is the frequency (secondary/second) that spray gun spraying group is reciprocally displaced on the direction orthogonal with conveyer belt direction of advance.
11. methods manufacturing radiator fan motor magnetite as claimed in claim 8, it is characterized in that, reciprocating spraying is to implement spraying operation with single spraying rifle back and forth spraying group, and be meet restraint-type: the mode of 5V≤6Df carries out the spraying of magnetite, wherein V is conveyer belt pace (m/min), D is the coating cloud spraying swath (cm) of spray gun, and f is the frequency (secondary/second) that spray gun spraying group is reciprocally displaced on the direction orthogonal with conveyer belt direction of advance.
12. methods manufacturing radiator fan motor magnetite as claimed in claim 8, it is characterized in that, emanation spraying paint used in this spray treatment is poly cyanamid resinoid or acrylic resin.
13. methods manufacturing radiator fan motor magnetite as claimed in claim 6, it is characterized in that, this surface conditioner is oxalic acid surface conditioner or titanium glue surface conditioner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410435986.5A CN105448511A (en) | 2014-08-29 | 2014-08-29 | Manufacturing method for cooling fan motor magnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410435986.5A CN105448511A (en) | 2014-08-29 | 2014-08-29 | Manufacturing method for cooling fan motor magnet |
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| CN105448511A true CN105448511A (en) | 2016-03-30 |
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| CN201410435986.5A Pending CN105448511A (en) | 2014-08-29 | 2014-08-29 | Manufacturing method for cooling fan motor magnet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891532A (en) * | 2016-11-09 | 2019-06-14 | Tdk株式会社 | The manufacturing method of rare earth element magnet |
| CN109923629A (en) * | 2016-11-09 | 2019-06-21 | Tdk株式会社 | The manufacturing method of rare-earth magnet |
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| CN1613126A (en) * | 2002-04-25 | 2005-05-04 | 松下电器产业株式会社 | Flexible magnet and method for manufacturing motor using the same |
| CN101013628A (en) * | 2006-12-28 | 2007-08-08 | 武汉材料保护研究所 | Organic sealing of bonded neodymium-iron-boron magnet and cathodic electrophoretic composite surface protection technology |
| CN102314990A (en) * | 2010-07-08 | 2012-01-11 | 赵立文 | Magnet and preparation method thereof |
| CN103762069A (en) * | 2014-01-06 | 2014-04-30 | 麦格昆磁（天津）有限公司 | Bonded permanent magnet and production method thereof |
| CN103824693A (en) * | 2014-03-22 | 2014-05-28 | 沈阳中北通磁科技股份有限公司 | Manufacturing method for neodymium iron boron lanthanon permanent magnet device with composite plated film |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1613126A (en) * | 2002-04-25 | 2005-05-04 | 松下电器产业株式会社 | Flexible magnet and method for manufacturing motor using the same |
| CN101013628A (en) * | 2006-12-28 | 2007-08-08 | 武汉材料保护研究所 | Organic sealing of bonded neodymium-iron-boron magnet and cathodic electrophoretic composite surface protection technology |
| CN102314990A (en) * | 2010-07-08 | 2012-01-11 | 赵立文 | Magnet and preparation method thereof |
| CN103762069A (en) * | 2014-01-06 | 2014-04-30 | 麦格昆磁（天津）有限公司 | Bonded permanent magnet and production method thereof |
| CN103824693A (en) * | 2014-03-22 | 2014-05-28 | 沈阳中北通磁科技股份有限公司 | Manufacturing method for neodymium iron boron lanthanon permanent magnet device with composite plated film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109891532A (en) * | 2016-11-09 | 2019-06-14 | Tdk株式会社 | The manufacturing method of rare earth element magnet |
| CN109923629A (en) * | 2016-11-09 | 2019-06-21 | Tdk株式会社 | The manufacturing method of rare-earth magnet |
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Application publication date: 20160330 |