News -China Rare Earth Permanent Magnet Manufacturers

New Solution for Oil Leakage - Magnetism Can Separate Oil and Water

2015-03-12

Permanent Magnets Manufactured by China Rare Earth Magnet Limited Can Separate Oil & Water According to foreign media, scientists from Massachusetts Institute of Technology recently develop a new technology that can separate oil and water with magnetic force. Researchers believe the … Permanent Magnets Manufactured by China Rare Earth Magnet Limited Can Separate Oil & Water According to foreign media, scientists from Massachusetts Institute of Technology recently develop a new technology that can separate oil and water with magnetic force. Researchers believe that the new technology can effectively resolve problems of oil leakage. Also, not only can it reduce cost of cleaning oil leakage but the oil leaking out can be recycled and reused. 　 Based on plans of the research team, with mixture of water-proof ferrous nano-particles and oil, magnetism can separate oil from water. In the plan, researchers design an oil skimmer which can prevent pollution caused by nano-particles. Then, ferrous nano-particles will be separated from oil with magnetic force and can be reused. Before, there were many studies on separation between oil and water, including many researches on ferrous magnetic fluid. The research team transforms the traditional methods. They use cylinder permanent magnet. Because magnetic field is the strongest in two poles of cylinder magnets, magnetic force of cylinder magnets is more powerful in two ends than that in two sides. The research team has simulated this process in laboratory. Magnetic deposits are embedded in the bottom of reservoir where there are a great deal of mixture of water and oil which contains ferrous nano-particles. In this way, oil will not gather around the magnets. When permanent magnets are above water, oil will form lots of globe-shaped objects on both sides of magnets. Though the design is quite simple, it can perfectly separate water and oil. The simpler the process and technology in the sea is, the better the work of recycling leaking oil is. Because of shortage of electricity and equipment in the sea, simpler systems and methods can do better, which can work for a long time as well. During the experiment, the research team also designs a special arrangement for magnets. They arrange the magnets into Halbach array, which can peel oil off the cylinder magnets. In one side of such array, the magnetic force is near zero, but in the other side, the strength of magnetic force is as strong as twice. In the experiment, oil is not attracted to the bottom of the array but the top and separated from the cylinder magnets. 　　 Researchers believe that degree of mixture of oil and water will affect the method to some extent. We cannot judge the degree of oil and water only by naked eyes, so the method should be experienced a great deal. In industry, using a boat to separate oil and water may be better. Problems of oil leakage are never appropriately resolved. But with magnetic force, separation of will become faster. Then, on the boat, mixture of oil and water can become ferrous magnetic liquid, and be separated by technology of magnetic field separation. At least, this technology can be realized in small-scale experiences. View Details

Demand of Rare Earth Magnetic Materials Has Been Boosted

2015-03-09

Neodymium Permanent Magnets Manufacturer China Rare Earth Magnet Limited New materials are regarded as one of the three pillars world’s new technological revolution and have been listed in seven strategic emerging industries. According to Twelfth Five-year Plan Material Industry … Neodymium Permanent Magnets Manufacturer China Rare Earth Magnet Limited New materials are regarded as one of the three pillars of the world’s new technological revolution and have been listed in seven strategic emerging industries. According to the Twelfth Five-year Plan of New Material Industry published by Ministry of Industry and Information, average annual growth rate will exceed 25% during the period of the twelfth five-year plan. China has rich rare earth resource with good performance which is wide applied to permanent magnets, batteries, metal alloys, catalyst, compound and ceramics. Neodymium magnet materials cover about a half of downstream application. “Rare earth magnetic materials play an important role in rare earth materials. In respect of performance, no better materials can take place of it. It has plenty of room to grow.” A broker paying much attention to metal new materials says. 　 Many security brokers believe that prospect of China rare earth new materials, especially rare earth permanent magnetic materials represented by neodymium magnets, is still prosperous. They consider that market of neodymium iron boron is hopefully to be opened up with development of air conditioner, new energy cars and wind power. It is understood that high-performance of neodymium magnetic materials can be classified into two kinds. One is field of new energy and energy conservation, including wind power, energy-saving elevators, environmental-friendly air conditioner, new energy cars and EPS. The other is traditional application field, including VCM and consumer electronics, like mobile phones and CD-ROM drivers. In recent days, one of China leading neodymium magnet industry, declares that it has signed up Basic Agreement with Hitachi. Both sides plan to set up a joint venture specializing in manufacturing high-performance sintered neodymium magnets. Neodymium permanent magnets are widely used in fields of automobiles, IT, household appliance, industry, medical treatment, environmental protection and energy. China should strengthen balance of profit chain, promote application of rare earth permanent magnet in high-tech field and guarantee win-win situation of the whole industrial chain. View Details

Maglev Photo Flame 20150213

2015-02-13

Permanent Magnet Manufacturer China Rare Earth Limited Product Name: Maglev E-shaped Photo Flame Package: One set/ 24.5x22x12.5cm Color of Frame: Black Texture: Acrylic Oil Spray Supplier: Do not only consider it as a common photo frame. Watching carefully, you will find that is high-tech … Permanent Magnet Manufacturer China Rare Earth Magnet Limited Product Name: Maglev E-shaped Photo Flame Package: One set/ 24.5x22x12.5cm Color of Frame: Black Texture: Acrylic Black Oil Spray Supplier: China Rare Earth Magnet Limited Do not only consider it as a common photo frame. Watching it carefully, you will find that it is a high-tech gadget, of which photo frame is suspending. With a little external force, the frame will start spinning. Is it surprising and magical? People of all age will undoubtedly love it! Discarding traditional demonstration of static state, the maglev photo frame looks quite unique. With fashionable and perfect design, it can match houses and offices in every style. The built-in LED light makes it looks cool and colorful in dark. The amazing suspending effect will bring you a pleasure visual feast. Trouble Shooting 1. Q: Working theory of maglev technology A: Whether maglev art crafts or maglev advertising products, they both adopt electric maglev technology which controls magnetic field. There is a strong permanent magnet in suspending objects. After it is powered on, the electro magnet in the base will produce current, together with strong permanent magnet, producing repulsive force which balances acting force and counter-acting force. In this way, gravidity of the Earth will be offset, which enable objects to be suspended. But only with this method, the suspending objects are easily to drop off. The reason why they can suspend in the air for a long time is that there is a Hall sensor in suspending system, which can sense changes of the magnetic field. When the suspending object is off-center, sensing the change of magnetic field, Hall sensor will immediately supply enough current to suspending system which can pull the suspending object back to the center. In this time, when you softly move the suspending object, it will keep spinning constantly, which is based on the theory of momentum of conservation. 2. Q: Should maglev products run upon electricity? A: Yes. Maglev products should work with power. We equip every set of products with an AV power adaptor. The input voltage is 110V-220V-240V and output voltage is 12V, which is used by the suspending system. If the products need to be exported, please order standard power supply according to different countries, such as Europe, America, England and Australia. 3. Q: How much electricity should be consumed by maglev products? A: When working normally, the power of maglev products is 1-2W. If working for 24 hours everyday, it consumes 2KWH of electricity in a month. It is quite energy-saving. 4. Q: How long is the service life of maglev products? A: Because the power of suspending system is small during working, electric components will be slowly aged. In addition, permanent magnets in the suspending system will demagnetize a little 20 years later. It is expected that its service life can reach over 10 years. 5. Q: Will the suspending objects drop off and be damaged when the power is cut off? A: Maglev objects can only work when they are powered. If the power is cut off, the suspending system will stop working, and the upward suspending objects will be attracted on the roof of the system and the downward one will be attracted by the bottom. The objects will fall off away the suspending system, so it will not be damaged. View Details

Teaching Magnets 20150210

2015-02-10

Ferrite Permanent Magnet Manufacturer China Rare Earth Limited A set of teaching magnets includes two bar which are 73 mm, a U-shaped magnet is 50mm, ring permanent diameter 35mm and damping oil-filling compass. Teaching experimental manufactured by mainly used as aids, student … Ferrite Permanent Magnet Manufacturer China Rare Earth Magnet Limited A set of teaching magnets includes two bar magnets which are 73 mm, a U-shaped magnet which is 50mm, a ring permanent magnet of which diameter is 35mm and a damping oil-filling compass. Teaching and experimental magnets manufactured by China Rare Earth Magnet Limited are mainly used as teaching aids, student stationeries and infant toys. Not only do they enable children intuitively to feel true magnetic field and variation, but they can show the magnetic characteristics in a vivid way, which can mobilize students’ interests and stimulate their thoughts and imagination. In this way, they help develop students’ and children’s intelligence. Magnetic filed does no harm to human body. Children can make use of the theory that like poles repel and opposite one attract and make a compass, which can explore children’s innovative potential and form an excellent habit of study and thoughts. Special tips: Q: What are teaching magnets? A: Obviously, they are use for teaching and make students realize tow points. On one hand, let students understand magnetic poles. The definition of textbook is that for bar permanent magnets, the strongest part is two ends. There is almost on magnetic force in middle part of them. The magnetic poles are classified into N pole and S pole. Q: How much is the magnetic force? A: Teaching magnets are mainly designed for teaching. Magnetism of all the teaching magnets is the same. Some costumers of China Rare Earth Magnet Limited have requirements for magnetism. Or they judge strength of the ferrite magnets by the middle part. That is wrong. Q: What is the material of teaching magnets? A: Ferrite magnets. These teaching permanent magnets have relatively good magnetism. But what is more important is that the magnetism can be kept for a long time and the cost is low. However, the weakness is that they are fragile and brittle. China Rare Earth Magnet Limited also manufactures alnico magnets for teaching, and neodymium magnets, SmCo magnets which are widely used in industry, therapy, medical, toy, gift, craft, packaging, etc. View Details

Cast & Sintered AlNiCo Magnets 20150205

2015-02-05

AlNiCo Permanent Magnet Manufacturer – China Rare Earth Limited Cast alnico magnets are made by casting techniques. The technique is quite simple which was widely used during World WarⅡ. Through smelting furnace, metal materials smelt into liquid blends and alloys in sand … AlNiCo Permanent Magnet Manufacturer – China Rare Earth Magnet Limited Cast alnico magnets are made by casting techniques. The technique is quite simple which was widely used during World WarⅡ. Through smelting furnace, metal materials smelt into liquid which blends and alloys in sand moulds. After certain rough machining and heat processing, the materials gains magnetic performances and finished products are produced after refining process. Cast alnico permanent magnets are fit for manufacturing with complicated or large sizes. But tolerance is big, which always needs post-process. Due to the term of alloying, its relative density is bigger that sintered alnico rare earth magnets, so its magnetic performance is better than sintered one. During production process, as long as you pay attention to design of sand moulds, you can produce complicated shapes. But this is limited by molding precision of cast alnico magnets and complicated shapes are hard to control. That’s because during cooling process, some transformation may happen. Composition of cast alnico is similar to that of sintered alnico. A technique called columnar crystal cannot be matched by sintering techniques. Columnar crystal refers to grain’s structure that is formed by controlling its cooling direction and speed and this structure can obviously improve performance of cast permanent magnet. Sintered alnico magnets are made by powder metallurgy. There are many introductions about alnico magnet in Baidu and Wikipedia. We can roughly know that alnico is made of Al, Ni, Co, Cu, Ti, Fe and Nb. Absolutely, not all classes of alnico contains these elements. Such as alnico alloy which is free from Co. Generally speaking, alnico magnetic steels are a series of alloy. In fact, they are iron-base alloy made of Al and Ni. Sintered alnico is formed by metal powder mixture. With a press machine controlling size of blanks, it is sintered in vacuum or air sintering furnace. After alloying, it is processed by heat, in which way it can obtain magnetic performance. The shapes are simple, because powder press machines are not suitable for complicated shapes. In addition, before refining process, requirement of tolerance of dimension is high. These features enable alnico to be applied to some magnetic parts that needs high precision. Performance of sintered alnico is relatively high, but it is weaker that casting alnico. Its biggest characteristic is the stable performance and temperature co-efficient can reach -0.01% /C~-0.02%/C, which is excellent heat-resistant rare earth permanent magnetic materials . It is widely applied to ammeters, motors, magnetic sensors, instruments, relays and some magnetic parts that require heat resistance and high precision. View Details

Strong Magnetic Pushpins for Art Display 20150202

2015-02-02

Neodymium Permanent Magnet Assembly Manufacturer China Rare Earth Limited Product Name: Magnetic - strong magnetic pushpin for art display Dimension: D19x 25mm Grade and Material: neodymium magnet N35+ ABS engineering plastic Coating of : Ni-Cu-Ni Magnetized Direction: through … View Details

Permanent Magnet Pipe Cutter 20150128

2015-01-28

Neodymium Magnet Manufacturer China Rare Earth Limited Our company specializes in manufacturing permanent magnets which can be used magnetic pipe cutter. With automatic rounding steel tube of transmission system, the cutting use oxygen-acetylene flame or oxygen-propane flame. It is … Neodymium Magnet Manufacturer China Rare Earth Magnet Limited Our company specializes in manufacturing permanent magnets which can be used in magnetic pipe cutter. With automatic rounding steel tube of transmission system, the cutting can use oxygen-acetylene flame or oxygen-propane flame. It is applicable for cutting various specifications of seamless steel tubes with diameter that is over 108mm. Due to magnetic force of neodymium magnets in magnetic wheels, the cutter can cut in multi-directions, such as in horizontal, vertical, traverse and upturned directions. Also, it can finish cutting at once, which improves efficiency, guarantee quality and lessen labor intensity. Production Profile: Product Name: permanent magnetic steel of magnetic pipe cutter Model: CG2-11 Input Voltage: AC220V/50Hz Diameter of Cutting Seamless Steel Pipe: >108mm, Thickness of Pipe Wall: 5-50mm Thickness of Cutting Seamless Steep Pipe: 6-50mm Speed of Cutting Steel Plate: 50-750mm/min Magnetic Absorption Force: >50kg Cutting Precision: Center deviation is less than 0.5 mm when it cuts around the seamless steel pipe with diameter is 159-425mm. Roughness of surface of cutting and groove can reach 12.5-6.3. Cutting Speed: 50-750mm/m, which can be controlled by silicon control rectifier. Motor: It uses 70SZ08 DC servo motor, of which rotating speed is 6000 circles per minute and power is 68W. Containing Permanent Magnet Materials: Strong Neodymium Magnets Instructions: 1. Please softly place the cutter on steel pipes in case that wheel would deform due to collision. Also, you should hold the handles and start cutting. 2. When the cutter is cutting, you should stop the car and move the reverser if you want to change direction. Please do not directly change the direction in case of damage on electric components and mechanical parts. 3. Before cutting, you should adjust oxygen pressure, acetylene pressure, cutting speed and angle of grooves. Please point oxygen-acetylene prepared flame at cut mouth. Then you can open oxygen valve and start cutting. Finishing cutting, you can close oxygen and acetylene valve and cut off electricity. Maintenance: 1. When using cutter, you should remove and clean dirt, such as iron filings, that often cling to wheels, with brush. 2. You should clean iron filings and rust with wire brush. Please do not cut the steel pipe with wet paint in case that paint will cling to wheels and lower the magnetic absorption force. 3. When cutting, you should pay attention to oxygen-acetylene pipe and power line, avoiding dropping off and damage of the cutter. 4. After cutting, you should place the cutter on magnetic protective plate in a dry place in case the wheel would become rusty and demagnetized. 5. If the magnetic wheels demagnetizes after a year of use, you can dissemble the wheel groups and magnetize it again. 6. During process of using, you can uncover the left and right lids and adjust left and right trays in order to guarantee quality. Applications: Various cutting of seamless steel pipes in oil, chemicals, shipbuilding and generators. China Rare Earth Magnet Limited manufactures neodymium permanent magnets & magnetic assembly , if you have such demand, welcome to sending enquiry with enough information! View Details

Waterproof Magnetic Button 20150123

2015-01-23

Neodymium Permanent Magnet Assembly Manufacturer China Rare Earth Limited Product Name: Clothes Magnetic Button (Invisible Button) Material: Dimension: Length 10mm-20mm, Width 8mm, Thickness 3mm Brand: CREPM Manufacturer: Specification: 10-12-15-18-20-22-25×8×3 … View Details

NdFeB Elevator Magnets 20150120

2015-01-20

Neodymium Permanent Magnet Manufacturer China Rare Earth Limited Influence of Weight Loss Rate and Surface Treatment Magnets on Elevator Tractors ( 2 barometric pressure, 120ºC, 100%RH, 96H) loss rate is an index that used to measure manufacturing level rare earth permanent magnet in a … View Details

New Energy Cars Play an Important Role in Promoting Neodymium Magnets Industry

2015-01-15

NdFeB Permanent Magnet Manufacturer China Rare Earth Limited Electric cars need traction system with high torque density and operation reliability excellent toque control ability. In other words, electric are in of neodymium magnets energy product, coercive force working temperature. … NdFeB Permanent Magnet Manufacturer China Rare Earth Magnet Limited Electric cars need traction system with high torque density and operation reliability and excellent toque control ability. In other words, electric cars are in need of neodymium magnets with high energy product, high coercive force and high working temperature. N42 magnets are the most popular magnets used in automobile motors. With rare metal, Dy, the working temperature can be increase to 400°C, which can meet the needs of cars. China high-end neodymium manufactures now are able to manufacture NdFeB permanent magnets that are used in cars, through operation with automobile and motor manufacturers. The products had been on trial of China and European and American car manufacturers and there are not any problems of technology and quality. Neodymium needed by new energy cars is as follow. HEV: NdFeB used by each HEV is 3kg more than that of a traditional car. EV: There are two technology schemes. One is that rare earth permanent magnetic motors are used as engines. And each car needs 5-10kgs more. Another scheme is that a motor is installed in a wheel. In this way, each car consumes 10-20kgs of neodymium more. It is expected by A.T.Kearney that there will thousands of millions of HEV in the world in 2020, which directly brings a demand 38 thousand tons of neodymium iron boron magnets per year. According to Kearney’s evaluation, in 2010, output of HEV covers 3% of global output of cars and in 2020, the output will hopefully increase to 75 million. In general, demand of NdFeB permanent magnets brought by new energy cars will reach 98 thousand tons a year. Nd used in a car is 70 dollars per kilogram, which means that in 2020 the neodymium market will reach 46.6 billion Yuan (according to 1 USD equaling to 6.77) RMB. There is an explosive growth in new energy cars. It is expected that in 2020, market scale of China electric car Nd will exceed 20 billion Yuan. By that time, China market will demand 44 thousand tons of Nd a year. Price of electric car neodymium is 70 dollars/kg (according to 1 USD equaling to 6.77), therefore, in 2020, China market scale of electric car Neo is 20.8 billion Yuan. From 1996 to 2008, industrial scale of global neodymium permanent magnet will increase from 900 million dollars to 3.6 billion dollars. According to our prediction, in 2020, only new energy cars will bring a demand of Neo with the value of 46.6 billion Yuan, which covers 60% of traditional demand. That is to say, new energy cars will become the most important market of NdFeB magnets industry in the future. View Details

Neodymium Elevator Magnets 20150112

2015-01-12

NdFeB Permanent Magnets Manufacturer China Rare Earth Magnet Limited Influence of Appearance Neodymium on Elevator Tractor 1. cracks Cracks magnets inside tractors may cause shutdown the tractor, or even some unexpected dangerous result for motor be damaged by cracks. 1.1 manufactures … NdFeB Permanent Magnets Manufacturer China Rare Earth Magnet Limited Influence of Appearance of Neodymium Magnet on Elevator Tractor 1. Magnet cracks Cracks of magnets inside of tractors may cause shutdown of the tractor, or even some unexpected dangerous result for the motor may be damaged by the cracks. 1.1 China Rare Earth Magnet Limited manufactures NdFeB permanent magnets by rolling and sintering. Materials may crack during powder process and vacuum sintering. 1.2 Process of punching holes or countersunk holes may lead to cracks in magnets. 1.3 Full inspection of materials and package can prevent delivering of unqualified magnets with fissures. 2. Edge clips Neodymium magnets are hard and brittle. Edge clips are easily caused during machine process and delivery. Edge clips reduces magnetic flux according to sizes of the unfilled corners. Chamfering corners of permanent magnets can effectively prevent edges clips and eliminate small uncompleted corners. 3. Surface treatment Neodymium elevator magnets are mainly made of Nd, Fe and B, which is easy to corrode. Therefore, China Rare Earth Magnet Limited usually manufactures it with Zn or NiCuNi coating. 3.1 Qualified surface treatment should be smooth and reasonably corrosion resisting without any burrs. 3.2 Unqualified surface treatments including foams, burrs, exfoliation on the surface and corroding when magnets are tested by neutral salt spray. 3.3 Unqualified magnets should be coated again until they are qualified. A Simple Analysis on Application of Neodymium Permanent Magnet for Tractors Tractor magnets are mainly applied to polarity matching. Currently, according to design and tonnage, NdFeB magnets use 20, 24, 36 or 48 polarity matching. 1. Polar operation lines of rare earth neodymium magnets are that it goes from N pole to S pole. The higher the grades are, the more intensive the polar lines are, which means magnetism are much stronger. 2. When opposing magnetic field are nearer to permanent magnetic field, attraction will be stronger, which means that the tractor torsion will be stronger. 3. A reasonable design of performance, shapes and stator coils can effectively reduce magnetic eddy and improve operation efficiency and decrease noise. It is superior to slope tile permanent magnets in respective of motor efficiency. View Details

NdFeB Magnets for Hibernation Protective Covers of iPad

2015-01-07

iPad Permanent Magnets Manufacturer China Rare Earth Magnet Limited iPad users may have such feeling that hibernating buttons are not convenient to use and easy break down. Especially when put on protective covers, the button more inconvenient use. Therefore, covers with hibernation … iPad Permanent Magnets Manufacturer China Rare Earth Magnet Limited iPad users may have such feeling that hibernating buttons are not convenient to use and easy to break down. Especially when iPad are put on protective covers, the button are more inconvenient to use. Therefore, protective covers with hibernation function emerge as required. When you place the cover on iPad, its screen will turn dark. And when you open the cover, the screen will automatically turn bright. It is easy and convenient and it can protect the buttons from breaking down. The cover can be fold as a holder for iPad to stay up on the table. Specification: similar to 4*2mm small block or disc NdFeB permanent magnets Theory: An electro magnetic sensor is installed on the right side of iPad and on the left side of protective cover there is a NdFeB magnet installed. Therefore, when protective cover closes, the magnets will be attracted to the frame of iPad. Meanwhile, built-in electro magnets in iPad will sense the magnetism of protective cover, which will trigger lock procedure of iPad system. It is an ingenious idea that permanent magnets are used in protective covers. Magnets mainly centralize on one side. Through a magnetism observation film, you can see magnets distribution of protective cover and iPad. There is a magnet on the protective cover that can make iPad enter hibernation. The other magnets are used to fix iPad or to make a triangle holder. But you don’t need to spend money on a protective cover. What you only need to do is to put a small magnet near the sense position. On the left side of iPad there are a row of small magnets to hold the cove and iPad body. Why these magnets are arranged into a long row and two short rows? Let us disassemble an iPad. The right side of it looks as follow. The part in the red frame is a hibernation sensor, and screen will be turned off when the sensor touches the round magnets inside the protective cover. There are a row of magnets in the yellow frame which are used to hold the cover and body. Magnetic poles are: positive, negative, positive, negative. Magnets on iPad are always opposite to poles of magnets on the cover, which can guarantee the cover to be hold in a right direction. Magnets on the left side of iPad are inserted in an aluminum cover. These magnets cover almost the whole body and absorption between magnets and the cover can be closer, for magnetism of these magnets are very strong which can be attracted quickly even there is a long distance between them. The inner structure has to be seen by cutting the beautiful iPad cover. There is a metal bar on two ends of the protective cover. Magnets (in the red and yellow frame) are fixed on it and then covered with plastic. There are two yellow plastic sheets in the middle which are used as a holder. Why do the protective cover need 14 magnets? When magnets in this part are folded as a holder, it is the metal part that needs to be attracted, not the magnets. Accordingly, it needs strong magnets distributed in a large size in case that the cover will fall off. There are six long or short magnets on the left side, of which magnetic force are very strong. With special design of shapes and magnetism of these two groups of magnets, each end can only attract the certain part. Therefore, protective covers cannot stay upside down or a few millimeter away from iPad. Our company can manufacture permanent magnet inside the protective cover. If you are interested in this product, please contact us by email with drawings of specification. View Details

SmCo Magnets for Actuators, Motors, Pumps 20141231

2014-12-31

Samarium Cobalt Permanent Magnets Manufacturer China Rare Earth Magnet Limited SmCo Applied to Magnetic Actuators Material: Sm2Co17Coercive Force: 677（KA/m） Residual Magnetism:1.04（T） Intrinsic Coercive 1195（KA/m） Max. Energy Product: 207（KJ/m³） Grade: … Samarium Cobalt Permanent Magnets Manufacturer China Rare Earth Magnet Limited SmCo Magnets Applied to Magnetic Actuators Material: Sm2Co17Coercive Force: 677（KA/m） Residual Magnetism:1.04（T） Intrinsic Coercive Force: 1195（KA/m） Max. Energy Product: 207（KJ/m³） Grade: SM28 Permanent Magnet Density: 8.4（g/cm³） Working Temperature: 350（℃） Currie Temperature: 820（℃） Magnetic actuators mainly consist of active magnetic axis, housing of pressure device, shell, passive magnetic axis, outer magnetic group, internal magnetic group and protective cover of internal magnetic group.Internal Magnetic Steel and Outer Magnetic Steel Assemblies of Magnetic Pump Product Name: Samarium Cobalt Magnets Manufacturer: China Rare Earth Magnet Limited Coercive Force: 700（KA/m） Residual Magnetism:1.08（T） Intrinsic Coercive Force: 1195（KA/m） Max. Energy Product: 223（KJ/m³） Grade: SM30 Density: 8.4（g/cm³） Currie Temperature: 820（℃） It is high heat resistant magnets which can work under 350°C. Permanent Motor Magnets – SmCo Magnets Manufacturer China Rare Earth Magnet Limited Product Name: SmCo Coercive Force: 677（KA/m） Residual Magnetism: 1.00（T） Intrinsic Coercive Force: 1990（KA/m） Max. Energy Product: 191（KJ/m³） Grade: SM26 Density: 8.4（g/cm³） Currie Temperature: 820（℃） Maximum Working Temperature: 350°C 图片名: smco-magnets-applied-to-motors-20141231.jpg China Rae Earth Magnet Limited Manufactures Permanent Magnets for Coreless Motors: Product Name: SmCo magnets Coercive Force:700（KA/m） Residual Magnetism: 1.07（T）Intrinsic Coercive Force: 1990（KA/m） Max. Energy Product: 223（KJ/m³） Grade: YXG-30H Density: 8.4（g/cm³） Currie Temperature: 820（℃） Maximum Working Temperature: 350°C Comparing with traditional motors, rare earth permanent magnetic coreless motors have four advantages. Firstly, they are high-efficient and energy-saving. With high power factor, efficient can be greatly improved without loss and magnetic damping. Actual applications prove that this technology adopt 1.5KW and 3KW diesel fuel motors, ratio of oil saving can reach 40%, comparing with that of traditional motors. Second, these motors are portable and can save material. With small sizes, they save 80% steel, 100% silicon steel and 50% copper. Third, reliability of these motors is excellent. With low working temperature, machine winding uses macromolecule precision insulation packaging technology, which is reliable. Rare earth permanent magnet coreless motors can be widely applied to wind turbines, electric automobiles, industrial motors, household appliance and so on. Under the circumstance of energy conservation and environmental protection, SmCo magnets definitely have a promising prospect. View Details

Production Process & Technology of Sintered Neodymium Magnets 20141224

2014-12-24

China Rare Earth Permanent Magnet Manufacturer Sintered Neodymium Magnets Production Process Receiving Orders: We create a set of standards and make plans for producing delivering according to product drawings. Producing Blanks: can produce blanks in certain shapes that meet … View Details

Rubber Magnetic Sheet 20141219-2

2014-12-19

Flexible Permanent Magnet Manufacturer China Rare Earth Limited Rubber Magnets Rubber magnetic sheet main covers flexible magnet sheet, iron powder extruding strip, fridge magnets and so on. It can be produced as roll strip any shapes with different dimensions according to specific … View Details

Ferrite Block Magnets 20141218

2014-12-18

Permanent Magnets Manufacturer China Rare Earth Magnet Limited Ferrite Magnetic Materials Ferrite magnet belongs to sintered permanent material, are composed of Sr, which have strong resistance demagnetization and low cost, tough brittle, needing special mechanical process. Because … View Details

Magnetic Filter & Magnetic Bar 20141216-2

2014-12-16

Neodymium Magnets Manufacturer China Rare Earth Magnet Limited Magnetic Filter/ Bar/ Strong Bar China could custom magnetic assembly . Most of assemblies are made neodymium permanent magnets & steel parts like filter, clients usually tell us the over sizes, surface gauss requirement, … View Details

Strong Salvaging Magnets 20141215

2014-12-15

Neodymium Magnet Assembly/ /Block Magnets/Circular Magnets/Permanent Rings Neodymium Magnetic N52 Strong Permanent Magnets/ Salvaging King/ Ring F50*50*25mm Deep Sea Magnets / 75*75*25mm N52 F100*100*50mm Assembly Block with Single Hole F80*60*18mm Material: … Neodymium Magnet Assembly/ /Block Magnets/Circular Magnets/Permanent Magnet Rings Neodymium Magnetic Rings N52 Strong Magnet Assembly/ Neodymium Permanent Magnets/ Salvaging Magnetic King/ Strong Magnetic Ring F50*50*25mm N52 Deep Sea Salvaging Strong Magnets / Strong Magnetic Ring 75*75*25mm N52 Salvaging Permanent Magnetic King/ Neodymium Strong Magnets F100*100*50mm N52 Salvaging Magnetic King/ Strong Magnetic Assembly / Block Strong Magnets with Single Hole F80*60*18mm Material: Sintered NdFeB Magnets N35-N52 (various magnets with different performance can be customized) Magnetization direction: Through thickness (magnets can be magnetized throng length, width and thickness) Coating: Ni (magnets can be coated with Zn, Ni, epoxy and gold, etc) Max working temperature: 80ºC Shape: Rectangle (shapes and sizes can be customized) Dimension & tolerance: L50mm*W50mm*T25mm +/-0.1mm Dimension & tolerance: L75mm*W75mm*T25mm +/-0.1mm Dimension & tolerance: L100mm*W100mm*T50mm +/-0.1mm Dimension & tolerance: L80mm*W60mm*T15mm +/-0.1mm (Actual Size: L70*W50*T14mm) Magnetic Suction Hook Categories: suction hook – magnetic assembly Material: A3 steel+ neodymium magnet Usage: salvage products that can attracts various kinds of iron products Strong permanent magnet ring with simple structure can be widely applied. It can hang objects without damaging the wall. It is convenient to suck or move and can be used for a long time. There is close relation between strength of magnetic ring and contact surface and direction. Some cases for reference as follow: 1. It can be used to salvage iron materials 2. It can used to hold documents and hang tools. 3. It can be used to attract small things or keys on surface of fridges. Salvaging Strong Magnets/ Circular Suction Magnets D42 Vertical Pulling Force 30KG Horizontal Pull Force 3.5KG Salvaging Neodymium Magnets/ Neodymium Pot Magnets/ Round Strong Magnet/ Ring Suction Magnets Vertical Pulling Force 20KG Horizontal Pull Force 3KG Salvaging Magnetic Hook/ Avoidance Suction Magnet/ Neodymium Magnetic Assembly / Round Magnet with Ring D25 Dimension: D25mmxH29.5mm Vertical Pulling Force 8KG Horizontal Pull Force 1.6KG Strong Permanent Magnets for Deep Sea Salvaging/ Round Suction Magnet/ Neodymium Pot Magnet with Ring D48 Vertical Pulling Force 60KG Horizontal Pull Force 6KG Dimension: D48mmxH59mm Strong Magnet for Deep Sea Salvaging/ Magnet Assembly / Ring Suction Magnets D60 Dimension: D60mmxH64mm Vertical Pulling Force 120KG Horizontal Pull Force 12KG View Details

How to Choose Suitable Permanent Magnets?

2014-12-12

Neodymium Magnets, SmCo, AlNiCo, Ferrite Magnets Manufacturer China Rare Earth Magnet Limited How to choose permanent magnet? Purchase Note1. What are the material and performance like N35 neodymium magnet, Sm2Co17, AlNiCo5, Y30 ferrite? 2. dimensions tolerances? 3. Do magnets need be … Neodymium Magnets, SmCo, AlNiCo, Ferrite Magnets Manufacturer China Rare Earth Magnet Limited How to choose permanent magnet? Magnet Purchase Note1. What are the material and the performance like N35 neodymium magnet, Sm2Co17, AlNiCo5, Y30 ferrite? 2. What are the dimensions and tolerances? 3. Do the magnets need to be magnetized? If yes, what is the magnetized direction, Axial or diameter? 4. What is the highest working temperature of the magnets? 5. What is your order quantity? 6. What is the surface treatment? 7. Please advice, if you need special treatment on the magnets. Representing Methods of Permanent Magnets 1. D is always used to indicate the diameter of ring magnets (due to the special symbol, now people often replace Φ with.). For example, in D10x2mm, the diameter is 10mm and thickness is 2mm. “x” means mathematic times sign. 2. As for block magnet, F is always used to indicate block magnets. Dimension of block magnets is showed as length x width x height. For example, in F60x20x10mm, the length is 60mm, width 20mm, and thickness 10mm. By default, we always consider the last number as the magnetized direction of the block magnet. In F60x20x10, the magnetized direction is the direction of 10mm—that is the direction of thickness. N pole and S pole will be in the biggest sides, which is the side of 60x20. 3. Dimension of ring magnets will be showed as outer diameter x inner diameter x height. For example, in D32Xd18X6, the outer diameter is 32mm, inner diameter 18mm and height 6mm. Height is also called thickness. Currently, ring magnets can be classified into magnets with straight holes and countersunk holes. The straight holes are directly punching holes. On the other hand, countersunk holes can be classed into big holes and small holes, and there are depths of big holes and of small holes which are commonly called thread holes. 4. Ball magnets can simply be showed as D. For example, D5mm means a ball magnet with 5mm diameter. Temperature Customers should choose grades of neodymium magnets according to working temperature. Magnetism will gradually fade away under temperature that its grade can not endure. Thus, please confirm working temperature and grade of the magnets that you need. Environment Under completely sealed circumstance, magnets should be coated with white Zn or uncoated, in which way cost can be reduced. On the contrary, if magnets are exposed to wet air, especially to salt air, magnets should be coated with Ni. Magnets should be put under places which is dry and with constant temperature. Also, magnets should be wrapped and separated with plastic, hard sheet and foam, away from irons and things that can be easily magnetized, such as displayers, bank cards, computers, TVs and mobiles. Transport and Place Because neodymium magnets are hard, bristle and with strong magnetic field, we should fetch and place softly (especially magnets in big dimension and thin sheet). When strong magnets attract or separate with other irons, we should not bunch them, otherwise, magnets may be destroyed or fingers may be injured. For neodymium magnets are metal alloys with its density in 745, they are heavy and frail. So we should move the magnets carefully in case that they will crack. Warehouse of magnets should be dry. Also, do not put the magnets directly on the ground. Magnets should be put on thick sheet or shelves. Notes of Separating Permanent magnets We should two attracted magnets by slowly pulling them in parallel instead of pry the magnets. Stabilizing the magnet with your left hands, you can move the other magnets in parallel with your right hands. Also, do not throw the magnets in piles immediately when you separate them. Magnets should be put softly and placed away from irons or magnetized objects or be wrapped in thick paper. Please slowly put the magnets back in the other magnets. You should hold the magnets till it entirely shifts in the magnets. View Details

Neodymium Magnetic Key Holders 20141210-2

2014-12-10

Custom NdFeB Permanent Magnets Manufacturer China Rare Earth Magnet Limited Magnetic Key Holders Some unexpected troubles may occur to us in our daily life. For example, it is quite often that we are obviously late for work or school, but can’t find keys though anxious go out. In order … Custom NdFeB Permanent Magnets Manufacturer China Rare Earth Magnet Limited Magnetic Key Holders Some unexpected troubles may occur to us in our daily life. For example, it is quite often that we are obviously late for work or school, but we can’t find our keys though we are anxious to go out. In order to resolve this problem, here is an introduction of some kinds of stylish neodymium magnet key holders able to attract keys, which can help us easily find the keys. Hands and feet of this small fellow are made of neodymium permanent magnet material that are easy to be absorbed on metal surfaces of doors, fridges or other objects. Its suspending hand can suck metal objects, like keys. Its attractive force should not be underestimated, for it can even absorb instruments, like needle-nose pliers and scissors. In addition, this neodymium magnetic holder is quite lovely and practical with colors of blue, green, red, and black to be chosen. This cloud-shape magnetic key holder adopts built-in magnets to attract keys. With 3M super glue on its back, not only can it be attracted on metals, but it is able to be stuck on flat surface of plastic objects, which is very convenient to be used in most places at home. N40 strong neodymium rare earth permanent magnets are embedded in the cloud-shape key holder. It can absorb 10 keys, as long as they are thin enough. With simple shape and the most fashionable “cloud concept”, nothing can be more suitable to be used at home. 　　 Wrapped in environmental-friendly ABS colored plastic housing, a U-shape strong magnetic holder has a neodymium iron boron permanent magnet inside each end. Also, there are two hanging holes on its back which can be fixed with nails on wall. We can put metal things, like keys on it, which is fit for those who often can not find their keys. Besides, not only is this U-shape magnetic holder good-looking and practical, but it has many colors to be chosen, such as, red, green, yellow, blue and so on. 　 China Rare Earth Magnet Limited customs magnetic assembly (like magnetic key holders) according to clients’ design, drawing. View Details