CN100370559C - Binding neodybium iron boron magnet surface cathode electrophoresis production technology - Google Patents
Binding neodybium iron boron magnet surface cathode electrophoresis production technology Download PDFInfo
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- 238000001962 electrophoresis Methods 0.000 title claims abstract description 65
- 238000005516 engineering process Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 title 1
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 36
- 230000005291 magnetic effect Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 230000009182 swimming Effects 0.000 claims description 19
- 238000000108 ultra-filtration Methods 0.000 claims description 18
- 238000002203 pretreatment Methods 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000010422 painting Methods 0.000 claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
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- 238000003973 irrigation Methods 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000000049 pigment Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005237 degreasing agent Methods 0.000 claims description 4
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 2
- IISKWLQYGVRJHI-UHFFFAOYSA-N 3-[hydroxy-(2-phosphonooxyacetyl)amino]propyl dihydrogen phosphate Chemical compound OP(=O)(O)OCC(=O)N(O)CCCOP(O)(O)=O IISKWLQYGVRJHI-UHFFFAOYSA-N 0.000 claims description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical class CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 2
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- CASOXAYOCHCWQU-UHFFFAOYSA-N butan-2-one;ethanol Chemical compound CCO.CCC(C)=O CASOXAYOCHCWQU-UHFFFAOYSA-N 0.000 claims description 2
- 239000006184 cosolvent Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000007781 pre-processing Methods 0.000 abstract 2
- 230000007306 turnover Effects 0.000 abstract 2
- 238000010923 batch production Methods 0.000 abstract 1
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- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000004922 lacquer Substances 0.000 description 9
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
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- 239000002351 wastewater Substances 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- YWTMTKBIVNUPNG-UHFFFAOYSA-N [N].[Fe].[Nd] Chemical compound [N].[Fe].[Nd] YWTMTKBIVNUPNG-UHFFFAOYSA-N 0.000 description 2
- PRQMIVBGRIUJHV-UHFFFAOYSA-N [N].[Fe].[Sm] Chemical compound [N].[Fe].[Sm] PRQMIVBGRIUJHV-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 101100493710 Caenorhabditis elegans bath-40 gene Proteins 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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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
- 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
- H01F41/026—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 protecting methods against environmental influences, e.g. oxygen, by surface treatment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to surface cathode electrophoresis production technology for binding Nd-Fe-B magnets, which comprises the steps of surface pre-processing of magnets, electrophoresis, turn-over hanging, solidification, etc. Compared with the prior art, the present invention has the characteristics of simple electrophoresis pre-processing technology, no need of boiling, phosphorization and passivation and no need of point compensation through turn-over hanging after the steps of electrophoresis. The present invention has the advantages of simple production devices, flexible design, high production efficiency and high product quality, and is suitable for the batch production of bonding Nd-Fe-B magnets used for permanent magnetic micro motors and special motors.
Description
Technical field
The present invention relates to Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology, the magnet that is used for the permanent magnetism small and special electric machine is produced in batches.
Background technology
Agglutinate neodymium-iron-boron magnet because of its magnetic good uniformity, freedom shape is big, dimensional accuracy is high, the developing direction that meets electronic devices and components " light, thin, short, little ", thereby be widely used in fields such as computer, instrument, automobile, communication, office automation, industrial automation, electrical engineering, robot, household electrical appliances, be described as " artificial or electronic heart pacemaker " of 21 century information industry.But be that the antirust problem of Agglutinate neodymium-iron-boron magnet fails thoroughly to solve by magnetics circle and the worried difficult problem of motor industry always.Scientist has studied various safeguard procedures, as spraying, dipping, plating, electrophoresis, vapour deposition, plasma polymerization etc. for solving this difficult problem both at home and abroad at present.United States Patent (USP) 5013411 has been introduced the powder spraying process, and the coating adhesion is poor, inhomogeneous, and is especially particularly outstanding at edge; The Chinese patent 01047890 of Zhejiang University's application has been introduced a kind of " method and the device of neodymium iron boron goods coating organic film ", but the plating time is long, and production efficiency is low; The Chinese patent 01085963 of Hu Jingyun application has been introduced a kind of neodymium-iron-boron magnetic material cathode of surface swimming and has been applied production technology, but there is technology pre-treatment step complexity in it, and shortcoming such as also to mend a little behind the electrophoresis, not too meet the products characteristics that Agglutinate neodymium-iron-boron magnet quantity is big, size is little, specification is many.
Summary of the invention
Purpose of the present invention is exactly to provide the Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology that a kind of technology is simple, help producing in batches for the problem that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology, it is characterized in that this technology comprises magnet surface pre-treatment, electrophoresis, turns over extension, curing schedule, and concrete processing step is as follows:
1) the magnet surface pre-treatment is at first adopted ultrasonic waves for cleaning, big wave current liquid cleaning machine or is used dust catcher, removes the magnetic impurity of magnet surface, uses running water, pure water rinsing clean again;
2) carry out degreasing with buck, to remove the greasy dirt of magnet surface, clean with pure water rinsing again;
3) pre-treatment is good magnet applies in ability cathode electrophoresis liquid as negative electrode, forms electrophoretic layer, and is clean through ultrafiltration flushing liquor spray irrigation and two-stage deionized water rinsing then;
4) magnet of rinsing well is translated into the curing hanger from the electrophoresis hanger, solidify the coating removal operation of back hanger with release, and need not magnet is mended a little again;
5) through rinse well magnet both can in the hot air circulation curing oven, solidify, also can be in the Far-infrared Heating drying tunnel portable curing, thus obtain Agglutinate neodymium-iron-boron magnet product through the cathode of surface swimming.
Described magnet surface pre-treatment is undertaken by ultrasonic sound appratus or big wave current liquid cleaning machine, and pretreatment liquid adds deionized water by antirust solution and forms, and the processing time is 10～40 minutes.
Described degreasing agent is a buck, and concentration is 0.1～0.8%, and magnet was handled in degreasing bath 10～40 minutes, and temperature is 10～25 ℃.
Described ability cathode electrophoresis liquid adds deionized water by cathode electrodip painting and is selected from the cosolvent of one of butanols, ethanol-butanone, butyl glycol ether formulated.
Solid part 15%～25% weight of described ability cathode electrophoresis liquid, conductivity 1300 ± 500 μ S/cm, PH5～6.5, pigment 1: 2.5～5, degree of neutralization MEQ value 25～55, voltage 150～250V, 25～35 ℃ of electrophoresis temperatures, electrophoresis time 1.5～5 minutes.
Described ability cathode electrophoresis anode system is made up of positive plate, anode cassette, pellicle and anolyte; Anolyte is the aqueous solution that is selected from one of oxalic acid, acetic acid, lactic acid, PH4～6; Ratio of cathodic to anodic area is controlled at (1～4): 1, and die opening is at 2～20cm.
Described ability cathode electrophoresis ultrafiltration flushing liquor is a deionized water.
Be furnished with recirculation unit in the described ability cathode electrophoresis groove, groove is furnished with ultrafiltration apparatus and automatic temp controller outward.
Behind the described magnet electrophoresis, curing process is divided into two sections, and temperature is respectively 30～90 ℃, 140～200 ℃; Be respectively curing time 5～20 minutes and 25～40 minutes; Programming rate is respectively 2～5 ℃ of per minutes.
Described technology can be used for producing any in Agglutinate neodymium-iron-boron magnet, neodymium iron boron base built-up magnet, bonding samarium cobalt magnet, bonding neodymium iron nitrogen magnet, bonding samarium iron nitrogen magnet, the NbFeB sintered magnet.
According to method of the present invention, can make the magnet coating layer thickness even, thereby guarantee that magnet obtains good anti-rust properties, insulation property and aesthetic appearance.Whole operations of electrophoresis production line of the present invention can be designed to automatically carry out, and also can be designed to semi-automatic, clearance-type and carry out, and product is single, specification is few, product size is approaching, can be designed to full-automatic; Otherwise, can be designed to semi-automatic, clearance-type.Flexible design, equipment is simple, and is easy to operate, the production efficiency height.Production capacity of the present invention all can reach produces ten million per year to hundreds of millions, keeps product rustless property height, characteristics that production cost is low simultaneously, to satisfy the demand of users at home and abroad.
Description of drawings
The Agglutinate neodymium-iron-boron magnet ring front view that Fig. 1 produces for the present invention;
Fig. 2 is for being used for ability cathode electrophoresis schematic representation of apparatus of the present invention.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
As shown in Figure 1, a kind of Agglutinate neodymium-iron-boron magnet ring, specification is Ф
110.2 * Ф
27.8 * L9 with 100 of this Agglutinate neodymium-iron-boron magnet rings/hang up into big wave current liquid cleaning machine and carry out pre-treatment, removes the impurity such as magnetic of magnet surface, uses running water, pure water two-stage washing clean again.
The magnet ring that pre-treatment is good applies in the ability cathode electrophoresis groove as negative electrode, forms electrophoretic layer.As shown in Figure 2, comprise power supply 1, coated article (magnet ring negative electrode) 2, positive plate 3, barrier film 4, lacquer liquid 5, pump 6, filter 7, heat exchanger 8, ultrafiltration apparatus 9 among the figure.60 kilograms of electrophoresis liquid preparations add 30 kilograms of deionized waters by 30 kilograms of cathode electrodip paintings (concentration is 36% weight), and stirring circulates.Electrophoresis tank is furnished with recirculation unit, ultrafiltration apparatus and automatic temp controller, to safeguard the electrophoresis liquid operate as normal.Solid part: 20%, conductivity is 1300 μ S/cm, PH=6, pigment 1: 4, degree of neutralization MEQ value 45, voltage 200V, 25～35 ℃ of electrophoresis temperatures, electrophoresis time 2 minutes.
The ability cathode electrophoresis anode system is made up of positive plate, anode cassette, pellicle and anolyte.Anolyte is a lactic acid aqueous solution, PH=4.Ratio of cathodic to anodic area generally is controlled at is advisable at 3: 1, and die opening is at 8cm.
The magnet ring electrophoresis is after ultrafiltration flushing liquor spray irrigation and two-stage deionized water rinsing are clean, the floating lacquer on flush away magnet ring surface guarantees painting quality, and adopts ultrafiltration apparatus to reclaim a considerable number of lacquer liquid and a large amount of flushing water of saving, make it form a closed circuit circulatory system, solve the discharge of wastewater problem.Every grade of washing time is more than 1 minute, and temperature is a room temperature.
The magnet ring that cleans up is turned over extension, promptly translate into the curing hanger, in the hot air circulation curing oven, solidify then by the electrophoresis hanger, also can portable curing in the Far-infrared Heating drying tunnel.The temperature and time baking-curing temperature of drying behind the electrophoresis is divided into two-stage, 50 ℃ of the first order, 190 ℃ of the second level.Be respectively curing time 20 minutes and 30 minutes.Programming rate is respectively 2 ℃ of per minutes and 10 ℃, thereby obtains the Agglutinate neodymium-iron-boron magnet product through the cathode of surface swimming.
According to the GB/T18880-2002 standard code, the Agglutinate neodymium-iron-boron magnet ring good to electrophoresis carries out corrosion resistant test, and its result satisfies following index:
In the saline solution room temperature of 3% weight the dipping 24 hours no abnormal;
80 ℃ of 90%RH constant temperature and humidities are preserved down not have in 240 hours and are got rusty, expand.
Under above-mentioned electrophoresis process parameter controlled condition, upward paint film has been done performance test in steel test piece (because of the Agglutinate neodymium-iron-boron exemplar does not have pieces of sheet), the result is as follows:
Adhesive force: 1 grade (method of drawing a circle, GB1720--79)
Pliability: 1mm (the flexibility test device, GB1731--79)
Impact strength: 50kg.cm (GB1732--79)
Hardness: 2H (pencil hardness)
Film thickness: 25 μ m.
Magnetic property, dimensional accuracy met customer requirements after magnet ring magnetized.
As shown in Figure 1, a kind of Agglutinate neodymium-iron-boron magnet ring, specification is identical with embodiment 1, and the magnet surface pre-treatment is undertaken by big wave current liquid cleaning machine, and pretreatment liquid adds deionized water by antirust solution and forms, and the processing time is 10 minutes.The employing buck is a degreasing agent, and the concentration of buck is 0.1～0.8% weight, and magnet was handled in degreasing bath 10 minutes, and temperature is 25 ℃.
The magnet ring that pre-treatment is good applies in the ability cathode electrophoresis groove as negative electrode, forms electrophoretic layer.As shown in Figure 2, comprise positive plate 1, barrier film 2, lacquer liquid 3, magnet ring negative electrode 4, pump 5, filter 6, heat exchanger 7, ultrafiltration apparatus 8, power supply 9 among the figure.60 kilograms of electrophoresis liquid preparations add 30 kilograms of deionized waters by 30 kilograms of cathode electrodip paintings (concentration is 36% weight), and stirring circulates.Electrophoresis tank is furnished with recirculation unit, ultrafiltration apparatus and automatic temp controller, to safeguard the electrophoresis liquid operate as normal.Solid part: 15%, conductivity is 1000 μ S/cm, PH=5, pigment 1: 2.5, degree of neutralization MEQ value 25, voltage 180V, 25～35 ℃ of electrophoresis temperatures, electrophoresis time 1.5 minutes.
The ability cathode electrophoresis anode system is made up of positive plate, anode cassette, pellicle and anolyte.Anolyte is an oxalic acid aqueous solution, PH=5.Ratio of cathodic to anodic area generally is controlled at is advisable at 2: 1, and die opening is at 3cm.
The magnet ring electrophoresis is after ultrafiltration flushing liquor spray irrigation and two-stage deionized water rinsing are clean, the floating lacquer on flush away magnet ring surface guarantees painting quality, and adopts ultrafiltration apparatus to reclaim a considerable number of lacquer liquid and a large amount of flushing water of saving, make it form a closed circuit circulatory system, solve the discharge of wastewater problem.Every grade of washing time is more than 1 minute, and temperature is a room temperature.
The magnet ring that cleans up is turned over extension, promptly translate into the curing hanger, in the hot air circulation curing oven, solidify then by the electrophoresis hanger, also can portable curing in the Far-infrared Heating drying tunnel.The temperature and time baking-curing temperature of drying behind the electrophoresis is divided into two-stage, 30 ℃ of the first order, 150 ℃ of the second level.Be respectively curing time 5 minutes and 25 minutes.Programming rate is respectively 5 ℃ of per minutes and 10 ℃, thereby obtains the Agglutinate neodymium-iron-boron magnet product through the cathode of surface swimming.
The performance parameter of present embodiment satisfies customer requirements.
As shown in Figure 1, a kind of Agglutinate neodymium-iron-boron magnet ring, specification is identical with embodiment 1.The magnet surface pre-treatment is undertaken by ultrasonic sound appratus, and pretreatment liquid adds deionized water by antirust solution and forms, and the processing time is 40 minutes.The employing buck is a degreasing agent, and the concentration of buck is 0.8% weight, and magnet was handled in degreasing bath 40 minutes, and temperature is 10 ℃.
The magnet ring that pre-treatment is good applies in the ability cathode electrophoresis groove as negative electrode, forms electrophoretic layer.As shown in Figure 2, comprise positive plate 1, barrier film 2, lacquer liquid 3, magnet ring negative electrode 4, pump 5, filter 6, heat exchanger 7, ultrafiltration apparatus 8, power supply 9 among the figure.60 kilograms of electrophoresis liquid preparations add 30 kilograms of deionized waters by 30 kilograms of cathode electrodip paintings (concentration is 36% weight), and stirring circulates.Electrophoresis tank is furnished with recirculation unit, ultrafiltration apparatus and automatic temp controller, to safeguard the electrophoresis liquid operate as normal.Solid part: 25%, conductivity is 1800 μ S/cm, PH=6.5, pigment 1: 5, degree of neutralization MEQ value 55, voltage 250V, 25～35 ℃ of electrophoresis temperatures, electrophoresis time 5 minutes.
The ability cathode electrophoresis anode system is made up of positive plate, anode cassette, pellicle and anolyte.Anolyte is an oxalic acid aqueous solution, PH=6.Ratio of cathodic to anodic area generally is controlled at is advisable at 4: 1, and die opening is at 20cm.
The magnet ring electrophoresis is after ultrafiltration flushing liquor spray irrigation and two-stage deionized water rinsing are clean, the floating lacquer on flush away magnet ring surface guarantees painting quality, and adopts ultrafiltration apparatus to reclaim a considerable number of lacquer liquid and a large amount of flushing water of saving, make it form a closed circuit circulatory system, solve the discharge of wastewater problem.Every grade of washing time is more than 1 minute, and temperature is a room temperature.
The magnet ring that cleans up is turned over extension, promptly translate into the curing hanger, in the hot air circulation curing oven, solidify then by the electrophoresis hanger, also can portable curing in the Far-infrared Heating drying tunnel.The temperature and time baking-curing temperature of drying behind the electrophoresis is divided into two-stage, 90 ℃ of the first order, 200 ℃ of the second level.Be respectively curing time 20 minutes and 40 minutes.Programming rate is respectively 2 ℃ of per minutes and 10 ℃, thereby obtains the Agglutinate neodymium-iron-boron magnet product through the cathode of surface swimming.
The performance parameter of present embodiment satisfies customer requirements.
The protection range of production technology of the present invention is not limited only to the foregoing description.For example, in this embodiment electrophoresis the Agglutinate neodymium-iron-boron magnet ring, but also can electrophoresis neodymium iron boron base built-up magnet, bonding samarium cobalt magnet, bonding neodymium iron nitrogen magnet, bonding samarium iron nitrogen magnet, NbFeB sintered magnet or the like.
Claims (9)
1. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology is characterized in that this technology comprises magnet surface pre-treatment, electrophoresis, turns over extension, curing schedule, and concrete processing step is as follows:
1) the magnet surface pre-treatment is at first adopted ultrasonic waves for cleaning, big wave current liquid cleaning machine or is used dust catcher, removes the magnetic impurity of magnet surface, uses running water, pure water rinsing clean again;
2) carry out degreasing with buck, to remove the greasy dirt of magnet surface, clean with pure water rinsing again;
3) pre-treatment is good magnet applies in ability cathode electrophoresis liquid as negative electrode, forms electrophoretic layer, and is clean through ultrafiltration flushing liquor spray irrigation and two-stage deionized water rinsing then;
4) magnet of rinsing well is translated into the curing hanger from the electrophoresis hanger, solidify the coating removal operation of back hanger with release, and need not magnet is mended a little again;
5) magnet through rinsing well or in the hot air circulation curing oven, solidify, or in the Far-infrared Heating drying tunnel portable curing, thereby obtain Agglutinate neodymium-iron-boron magnet product through the cathode of surface swimming.
2. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1, it is characterized in that, described magnet surface pre-treatment is undertaken by ultrasonic sound appratus or big wave current liquid cleaning machine, and pretreatment liquid adds deionized water by antirust solution and forms, and the processing time is 10～40 minutes.
3. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1 is characterized in that described degreasing agent is a buck, and concentration is 0.1～0.8%, and magnet was handled in degreasing bath 10～40 minutes, and temperature is 10～25 ℃.
4. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1, it is characterized in that described ability cathode electrophoresis liquid adds deionized water by cathode electrodip painting and be selected from the cosolvent of one of butanols, ethanol-butanone, butyl glycol ether formulated.
5. according to claim 1 or 4 described Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technologies, it is characterized in that, solid part 15%～25% weight of described ability cathode electrophoresis liquid, conductivity 1300 ± 500 μ S/cm, PH5～6.5, pigment 1: 2.5～5, degree of neutralization MEQ value 25～55, voltage 150～250V, 25～35 ℃ of electrophoresis temperatures, electrophoresis time 1.5～5 minutes.
6. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1 is characterized in that described ability cathode electrophoresis anode system is made up of positive plate, anode cassette, pellicle and anolyte; Anolyte is the aqueous solution that is selected from one of oxalic acid, acetic acid, lactic acid, PH4～6; Ratio of cathodic to anodic area is controlled at (1～4): 1, and die opening is at 2～20cm.
7. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1 is characterized in that described ability cathode electrophoresis ultrafiltration flushing liquor is a deionized water.
8. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1 is characterized in that being furnished with recirculation unit in the described ability cathode electrophoresis groove, and groove is furnished with ultrafiltration apparatus and automatic temp controller outward.
9. Agglutinate neodymium-iron-boron magnet cathode of surface swimming production technology according to claim 1 is characterized in that behind the described magnet electrophoresis, curing process is divided into two sections, and temperature is respectively 30～90 ℃, 140～200 ℃; Be respectively curing time 5～20 minutes and 25～40 minutes; Programming rate is respectively 2～5 ℃ of per minutes.
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| CNB2003101086393A CN100370559C (en) | 2003-11-17 | 2003-11-17 | Binding neodybium iron boron magnet surface cathode electrophoresis production technology |
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| CNB2003101086393A CN100370559C (en) | 2003-11-17 | 2003-11-17 | Binding neodybium iron boron magnet surface cathode electrophoresis production technology |
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| CN100370559C true CN100370559C (en) | 2008-02-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100484666C (en) * | 2006-12-28 | 2009-05-06 | 武汉材料保护研究所 | Nd-Fe-B magnet inorganic sealing hole adhesion and cathode electrophoresis composite surface protection technique |
| CN101013628B (en) * | 2006-12-28 | 2011-04-20 | 武汉材料保护研究所 | Organic sealing of bonded neodymium-iron-boron magnet and cathodic electrophoretic composite surface protection technology |
| DE102011003193A1 (en) | 2011-01-26 | 2012-07-26 | Robert Bosch Gmbh | Synthesis of magnetic composites |
| CN104532325B (en) * | 2014-12-31 | 2017-08-29 | 天津市天玉名涂料科技有限公司 | A kind of electrophoretic coating device of the floating paint of automatic cleaning electrophoresis |
| CN107641831A (en) * | 2017-09-29 | 2018-01-30 | 京磁材料科技股份有限公司 | The device and method of automatic business processing before neodymium iron boron product electrophoresis |
| CN107610866A (en) * | 2017-10-23 | 2018-01-19 | 宁波韵升粘结磁体有限公司 | A kind of surface treatment method for improving Agglutinate neodymium-iron-boron magnet performance |
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| CN1085963A (en) * | 1993-11-03 | 1994-04-27 | 胡景云 | The swimming of neodymium-iron-boron magnetic material cathode of surface applies production technique |
| JPH07161516A (en) * | 1993-12-10 | 1995-06-23 | Kanegafuchi Chem Ind Co Ltd | Bond magnet and its production |
| JPH10256012A (en) * | 1998-01-26 | 1998-09-25 | Sumitomo Special Metals Co Ltd | Permanent magnet with excellent corrosion resistance |
| JP2000331811A (en) * | 1999-05-24 | 2000-11-30 | Daido Denshi:Kk | Method for painting magnet powder molded body and painted magnet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085963A (en) * | 1993-11-03 | 1994-04-27 | 胡景云 | The swimming of neodymium-iron-boron magnetic material cathode of surface applies production technique |
| JPH07161516A (en) * | 1993-12-10 | 1995-06-23 | Kanegafuchi Chem Ind Co Ltd | Bond magnet and its production |
| JPH10256012A (en) * | 1998-01-26 | 1998-09-25 | Sumitomo Special Metals Co Ltd | Permanent magnet with excellent corrosion resistance |
| JP2000331811A (en) * | 1999-05-24 | 2000-11-30 | Daido Denshi:Kk | Method for painting magnet powder molded body and painted magnet |
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