News -China Rare Earth Permanent Magnet Manufacturers

2013-12-06

Blocks 90x20x5mm SmCo Magnets Client: Could you please offer block permanent magnets: Pos.1 Block 90x20x5 mm, tolerances (+/-0.1) Material: SmCo5 , YX20; Br=850-980mT, (BH) max=143-175kJ/m³, HcB=597-677kA/m, HcJ>1273kA/m; Coating: NON; Magnetized by 5 mm; Quantity: … Blocks 90x20x5mm SmCo Magnets Client: Could you please offer block permanent magnets: Pos.1 Block 90x20x5 mm, tolerances (+/-0.1) Material: SmCo5 , YX20; Br=850-980mT, (BH) max=143-175kJ/m³, HcB=597-677kA/m, HcJ>1273kA/m; Coating: NON; Magnetized by 5 mm; Quantity: 1,150pcs Pos.2 Block 90x20x5 mm, tolerances (+/-0.1); Material: Sm2Co17, Br>= 1.05T; Coating: NON; Magnetized by 5 mm; Quantity: 1,150pcsPrice in USD/CIF FedEx Economy For this project the ETA by the end of week 50 is of interest, because our office is closed from 17 - 31. Dec Could you please check the time required for production, of course for the shipment as well? China Rare Earth Magnet Limited: The production time is around 22~24 working day. The shipping time is about 4~5 working days. It might be a bit longer due to the large shipments of the forwarder around Christmas season. Here is our offer for SmCo rare earth magnets :SmCo *Size/Sm2Co17/Grade/Magnetized or not/Magnetization Direction/Coating/Qty/Unit Price/FCA HONG KONG US$ 90x20x5mm (±0.1mm)/SmCo5-YX20/Magnetized/Across 5mm/None/1,150pcs/US$9.90/pc 90x20x5mm (±0.1mm)/Sm2Co17-(Br≥1.05T)/Magnetized/Across 5mm/None/1,150pcs/US$6.53/pc Economy express cost of 1000pcs to your address in Germany is US$1050. Air freight of 1000pcs to HAMBURG AIRPORT is US$865. If you need to know the air freight to other airport in Germany, please tell us the airport name. Period of validity of price: 5 days Client: Could you please check alternatively the price for blocks with Sm2Co17 permanent magnetic material YXG-24? 5000pcs per carton…hard carton…Can you send images of carton cases… China Rare Earth Magnet Limited: Our previous quotation was based on Sm2Co17 (SmCo28 grade). SmCo *Size/Sm2Co17/Grade/Magnetized or not/Magnetization Direction/Coating/Qty/Unit Price/FCA HONG KONG US$ 90x20x5mm (±0.1mm)/Sm2Co17-YXG-24/Magnetized/Across 5mm/None/1,150pcs/US$6.15/pcClient: Thanks a lot for your support, as well sent quotation with YXG24 material. Prefered is the material YX20. China Rare Earth Magnet Limited: If you intend to order this batch of goods, we suggest you to choose air shipment service. For the goods close to or over 100KGS, we ship them by air or by sea. You may notice that our price term was FCA HONG KONG. We can get tax-rebate if we export the goods from Hong Kong or Shanghai. The tax deduction has included in our price. If we send out permanent magnet by express, we are unable to get this benefit. Herewith the price of magnets is much higher accordingly. Hope you can understand. I applied for discount price from our managements. Hope you are satisfied with our offer. SmCo *Size/Sm2Co17/Grade/Magnetized or not/Magnetization Direction/Coating/Qty/Unit Price/FCA HONG KONG US$ 90x20x5mm (±0.1mm)/SmCo5-YX20/Magnetized/Across 5mm/None/1,180pcs/US$9.70/pc Client: In accordance with your quotation we order: 90x20x5mm (±0.1mm)/SmCo5-YX20/Magnetized/Across 5mm/None/1,180pcs/US$9.70/pc Air freight of 1180pcs permanent magnets from HONGKONG to DUSSELDORF (DUS) AIRPORT US$880, please check. Please confirm the order and indicate the ETA. For the magnets belonging test report please send by email with data: - Dimension - Magnetic data - Magnetic flux by Helmholtz Coil View Details

Disk Type or Coin Shape Neodymium Magnets for Reducing Pain

2013-12-05

D1/4"x1/16", D1/2"x1/16", D5/8"x1/16", D3/4"x1/16" N52 Rare Earth Permanent Magnets Client: Could you please send me disk permanent magnet samples of 1/4, 1/2, 3/4, 1 inch x 1/16, 1/8 thickness sizes in neodymium material ? Thank and prices for … D1/4"x1/16", D1/2"x1/16", D5/8"x1/16", D3/4"x1/16" N52 Rare Earth Permanent Magnets Client: Could you please send me disk permanent magnet samples of 1/4, 1/2, 3/4, 1 inch x 1/16, 1/8 thickness sizes in neodymium material ? Thank you and prices for the same in sets of how do you ship to my address? And how do I effect payment? China Rare Earth Magnet Limited: Yes, of course we are glad to provide samples to you. But as you know, we customize various magnets as per our clients' requirements. So there's few stocked magnets could totally answer another customer's purpose. If you do need these coin shape neodymium permanent magnets, we'd like to customize them for you. Before our quotation, we need to know the following information first: Type: Strong Rare Earth Magnets1. Grade: Like N35, N52 etc. 2. Coating: Like NiCuNi etc. 3. Magnetization Direction: Through diameter or thickness? 4. Quantity: (The larger quantity, the more favorable price you will get from us.) The shipping method depends on the gross weight of your magnets. If not too heavy, generally they will be sent to your door by express. As for the payment, we'll send you the PI (with payment details) once the order is confirmed. Please be noted.Client: I need your help with this permanent magnet. I thought I should first of all tell you what I need these disk neodymium magnets for they are to apply to people for reducing pain I have been doing this successfully for the last 12years and that is part of the problem they are in many hands and people tend to let them slap on to something metal and brake them. So I need them to have a thicker coating and be very strong in neo strength (I have no idea how you rate the strength) before this I was using second hand from PC hard drives in various sizes and thicknesses, that requires a lot of time cutting them at the zero point to get north and south separated then grind them to get the sharp edges off then color the south side so people know which. Side to apply, I need to have a coating easily paintable as I am going to paint the side that faces the skin red. I do sincerely hope you make suggestions. Could you please send me samples of neodymium N52 disc monopoles ( that is face charged north one side and south the other face like heads and tails) I don't really know what your terms are for that type. The disk in the following sizes1/4", 1/2", 5/8", 3/4", 1 inch, x1/16 thickness & 1/8 thickness, coating in NICNI. We will assess from this our needs for future business with you so could you include pricing by the 100 for each. China Rare Earth Magnet Limited: I've checked our warehouse, sorry we have no stocked permanent magnetic samples as you request. If you do need, please tell me the samples' quantity, we'd like to customize for you. View Details

China Magnet – N35 Permanent Magnet

2013-12-03

N35 Neodymium Rare Earth Permanent Magnets Made in China Client: We are Magnet business Turkey. We selling online and we directly to the industrial companies. working with another permanent magnet company at China, but have some problems. It is so slow take new prices (like 2-3 days) it prepare … N35 Neodymium Rare Earth Permanent Magnets Made in China Client: We are in Neodymium Magnet business in Turkey. We are selling online and we are selling directly to the industrial companies. We are working with another permanent magnet company at China, but we have some problems. It is so slow to take new prices (like 2-3 days) and it is so slow to prepare our orders (like 20 days). If you can be faster for giving prices and preparing the goods, we can make business with you. Because always our customers ask us the prices and they aren't giving a pre-order without knowing the prices. We are thinking of giving a big order with sea transport and frequently little orders with air transport.Please give your best prices and valid dates for China neodymium Magnets (NdFeB) (Please give the FOB Prices, we have our own forwarder agent) How long it takes to take new prices from you? (For example: When we asked "40x20x5 5000 pieces", how long later you can say the price") How long it takes to prepare the magnets? (For example: We have an order like attached document, how many days later you can be ready for shipment) D8x4 ---400K; D18xd5x10—1000; D15x3---25K; D20x2---10K; 15x10x3---5K; D30x5---1000; D10x1--50K; D10x2---3000; D12x2---100K; D6x3--50K; D4x2--50K; 40x20x5---2000; D15x5—5000; D9x1,5---50K; D8x2---50KChina Rare Earth Magnet Limited: There are so many sizes in your enquiry. What's the grade of neodymium permanent magnet? Which models do you need urgently? Please kindly let us know. Client: China magnets with Nickel coating and N35 permanent magnet China Rare Earth Magnet Limited: Our best offer is listed as follows:Client: We are importing Neodymium Magnets from China to Turkey for almost 5 years. We have a good situation at Turkey’s permanent magnet market. Sometimes the prices of Neodymium magnets are dissimilar and if we can find a trustworthy company with fair prices, we will change our supplier. The attached list is our next order. All neodymium magnets will be N35 and nickel coating. Please send invoice with your bank details to me, I will arrange advanced payment tomorrow. View Details

SmCo Permanent Magnet

2013-12-02

SmCo5 & Sm2Co17 Permanent Magnet Manufacturer China Rare Earth Limited: We updated the English version of our magnet website last month, if you are interested in magnets, welcome to visiting for more details about permanent magnetic applications , technical datas. If have any question on … View Details

Ferrite Permanent Magnets – Ceramic Ring Magnets D100xd60x20mm

2013-11-29

Ferrite Ring Magnets – Ceramic Permanent Material: Sintered Magnet Size: Outer Diameter 100mm x Inner 60mm Thickness 20mm (D100xd60x20mm) Remark: We also custom ferrite magnets, ceramic magnets in other shapes & sizes. Grade: Y30 magnetFerrite are non-metallic magnetic … View Details

Rare Earth Permanent Magnet, Strong Neodymium Magnet, Super Strong N52 Block Magnet 50x50x25mm

2013-11-28

Product Name: Strong Neodymium Rare Earth Permanent Magnet Size: 50x50x25mm (length 50mm, width 50mm thickness 25mm) Tolerance +-0.1mm, can custom other sizes & shapes.Material: Sintered Grade: N52 (Magnetic Property Sheet) Plating: Nickel-Cooper-Nickel three layers (NiCuNi), it … View Details

Neodymium Magnetic Balls D5mm, N35 China Magic Neocube, 216pcs Permanent Magnetic Toy

2013-11-27

China Neodymium Permanent Magnetic Balls D5mm – N35 Neocube Made in ChinaType: Rare Earth Magnet Material: MagnetsSize: D5mm, D4.8mm, D4mm, D3mm available, can custom D6mm, D8mm, D10mm, etc. Normal plating colors are silver, gold, white, black, and so on. Other like blue, yellow, … China Neodymium Permanent Magnetic Balls D5mm – N35 Neocube Made in ChinaType: Rare Earth Permanent Magnet Material: Neodymium Rare Earth MagnetsSize: D5mm, D4.8mm, D4mm, D3mm available, can custom D6mm, D8mm, D10mm, etc. Normal plating colors are silver, gold, white, black, and so on. Other colors like blue, yellow, purple and green can be customized as well. Country of Origin: China- Improve Creativity A person's adaptive capacity will directly affect his success. Most of game and intellectual toys just request you to simply make up preset shapes. While neodymium permanent magnet can stimulate your imagination, create all kinds of shapes at will. The biggest feature of neodymium magnetic toy is you can almost complete control it. Other intellectual toys and models limit your creation of 2D or 3D graphics. The string of other spheres limit you can only make up two-dimensional graphics or polygon. But you create the shape will be as unique as you with magic neocube. You can completely control it, because neocube toy is composed of 216pcs neodymium ball magnets, each ball is actually a point of each shape. If you demand China magnet toys, welcome to contact China Rare Earth Magnet Limited! - Effective Stimulates Left and Right Brain Permanent magnetic neocube is really a magic intellectual toy. It can stimulate and exercise your left and right brain at the same time. Compared with other types of intellectual toy, it can make you benefit more in the play. Each side of brain is responsible for controlling different functions of human body and cognitive faculties. Left brain is responsible for logical reasoning, mathematics and language, it also control muscles of right half human body. The right brain control space imagination ability, creativity, facial appearance and visual recognition, at the same time control the left part of the body. When you play with neocube, you should not only use space imagination ability and creativity, will also use your logical thinking ability and even mathematical knowledge. In this way, it can make you exercise your left and right brain.- Decompressing Effect, Magnetic Health Care & Therapy Function Neodymium neocube permanent magnet can make you release pressure owing to his structure. Like other decompression toys, neocube toy can be transformed, distorted, make you to release emotion. Better than other toys, neocube is composed of 216pcs separate magnet balls; you can separate magnet balls, and then make up them together. The biggest characteristics of magnetic balls is that each ball has north and south polar, homo-polar repels, hetero-polar attracts, so in the process of combination and creation, if two balls repel each other, just turn the direction of balls! View Details

Neodymium Magnets with Gold Coating

2013-06-28

The tile-shaped objects in the above picture are neodymium magnets with gold coating. Although there only disc and tile, fact we can customize various shapes based on customers' demands. We need customers to provide us outer diameter, inner thickness angle or clear drawings avoid … View Details

Neodymium Magnets with Nickel Coating

2013-06-28

Presently, sintered neodymium magnets possess the strongest magnetism in permanent magnets, grades range is from N35 to N52.Neodymium magnet a kind of hard and brittle material susceptible be oxidized corroded. Currently most effective way prevent oxidizing corroding surface … View Details

Neodymium Magnets without Coating

2013-06-28

Our company specializes in manufacturing and selling neodymium permanent magnets with various materials, grades shapes. Due to the superior quality as well our good service attitude, we have obtained praise from domestic foreign customers, occupied a position field of … Our company specializes in manufacturing and selling neodymium permanent magnets with various materials, grades and shapes. Due to the superior quality as well as our good service attitude, we have obtained praise from domestic and foreign customers, and occupied a position in the field of neodymium magnets.Magnetic Characteristics & Physical Properties of Sintered Neodymium MagnetsMagnetization DirectionShape & Size: Customized The above picture is of neodymium magnets without coating. Due the properties of easy to be oxidized and corroded, generally neodymium magnets are required to be coated after being produced. In order to protect the magnets from oxidation and corrosion because of contact with air and water, the coating include zinc coating, nickel coating, black epoxy coating. Thus the magnetic properties of NdFeB could be perfectly maintained. However, this does not mean that the NdFeB magnets that with coating are unpopular. We can also receive many orders of this kind of NdFeB magnets frequently. NdFeB magnets without coating owe the following advantages:To begin with, The natural advantage of neodymium magnets that without coating make it convenient in secondary treating so that customers could passivity the magnets freely according to their needs. In addition, NdFeB magnets without coating have a relatively higher sensitivity and a stronger magnetism. Finally, NdFeB magnets without coating better retain their original property.NdFeB magnets without coating generally require vacuum packaging. The advantage of vacuum packaging is to prevent the magnets from contacting with air and moisture during the transport.Another way to pack neodymium magnets is isolation. Isolation packaging refers to separate the two magnets by tools such as gaskets to prevent their mutual adsorption of each other.If you want to order this kind of neodymium magnets, please feel free to contact us. We’ll try our best to provide you with magnets of best quality and price. View Details

Is the magnetism of permanent magnets really “permanent”?

2013-06-28

We can find from the structure that magnetism of permanent magnet is not always in power. Magnet composed magnetic domains. The so-called domains are small “paddy field” with moments. When these field " arranging a certain regular pattern, moments offset each other, then … View Details

Main Manufacturing Process of Sintered Neodymium Magnets

2013-06-28

Would you like to know how make neodymium permanent magnets? We are willing share the main manufacturing process of magnets with below. Basically it includes burdening, smelting, pulverization, molding, sintering, testing, machining, electroplating, magnetizing, final examining and … View Details

Licensed neodymium magnets introduction

2013-06-28

The patent holder of neodymium magnets is Hitachi Metals, Ltd. (the former was Sumitomo Special Metals Corp. ) and MQI. If request, we can supply Licensed to our customers. The territories sumitomo include the United States, Canada, Europe, Southeast Asia other countries, but couldn't with … View Details

Magnetic Assemblies

2013-06-27

China Rare Earth Magnet Limited supply many kinds of Magnetic Assemblies including motor, lifter, and hook etc. Assembly is an extensive definition it involves in a number fields, such as electro-acoustic industry, machining, instrument, automatic control. Our company owns … View Details

Therapy Neodymium Magnets

2013-06-23

1, the magnetized water in historyThe magnetic force is one of four basic forces nature, compass an example clever application, which great inventions ancient China. As early as 500 years ago, physician Li Shizhen who Ming Dynasty had discovered that treated has a "go sore fistula, long … 1, the magnetized water in the historyThe magnetic force is one of four basic forces in nature, the compass is an example of the magnetic clever application, which is one of the four great inventions in ancient China. As early as 500 years ago, the physician Li Shizhen who in Ming Dynasty had discovered that the magnetic treated water has a "go sore fistula, long skin, long drink people have child should be into wine", "impotence" and other effects (see Compendium of Material Medico, "pages 583-586), strengthen the health, treat lots of diseases. However, the magnetic material is applied by the ancients, which is occurred in natural --- magnetite, whose magnetic properties compared with the modern artificial synthesis of magnetic materials, which is very week. 2, the king of high magnetic force – neodymium magnetsThe third generation of neodymium was born in 1983, whose magnetic field strength is more than 10 times than the ordinary magnet, the service life of up to 10 years, is the highest permanent magnet in society, known as "permanent magnet". Widely used in defense, aerospace technology, microwave, communications, electronics, health care and other high-tech fields.3, the working principle of descaling antiscale of neodymium magnetThe water treated by the high-strength neodymium iron boron magnetic treatment, the water molecules key simultaneous deformation of angle and the length of the hydrogen bond angle decreases from 103 degrees to 105 degrees, so that the water of physical and chemical nature change, the activity and solubility of water greatly increased, the decomposition of calcium carbonate in the water in the cooking process to generate a lower soft calcium bicarbonate, not easy to accumulate in the walls can easily be taken away by water. The degree of polymerization of addition of water increased, the solid material was dissolved into finer particles, particle refinement, the smaller the distance between the two ions, not easy to condense in the wall, so as to achieve the descaling effect.4, the principles of keep health of neodymium magnetAccording to the difference to the geographical environment, the difference of the mineral content in water, the harmful substances in water greatly affects our lives and health. Insoluble nature that calcium and magnesium salts in water, which affect the absorption of the animals, plants and photosynthesis of plants, a large number of practical and scientific experiments to prove that the Wokai "neodymium high-strength can change the physical properties of water ,such as tension, density, dissolved, chemical, which have a significant impact, magnetized water can increase the permeability of the water activity of the enzyme and biofilm, regular consumption can be physical health, conditioning the body's micro-circulatory system, digestive system, endocrine system and nerve function, and enhance human immunity, prevention and treatment of many diseases. High strength magnetized water, the water molecule is activated, the high oxygen content: 1, It can increase the permeability of the biofilm, reduce blood viscosity if you drink it often, maintaining blood vessel elasticity, prevent thrombosis, prevent and resolve the stones; Regular consumption of physical fitness, improve the body immunity, anti-aging, prevention and treatment of many diseases and accelerate the change and the promotion of human epidermal metabolism, it makes your skin smooth and beautiful. View Details

Neodymium Magnets Factory

2013-06-23

Why should we limit the export of neodymium magnets? For this problem there are all kinds assumptions, but Japanese companies manufacturing magnets gave same answer: "The reason is that they want to get our technology." Currently, monopolized market shares magnets. Besides, as … Why should we limit the export of neodymium magnets? For this problem there are all kinds of assumptions, but Japanese companies manufacturing neodymium magnets gave the same answer: "The reason is that they want to get our neodymium magnets manufacturing technology." Currently, Japanese monopolized the market shares of neodymium magnets. Besides, as mentioned earlier, neodymium magnets manufacturing requires plenty of technology accumulation. In this regard, Japanese companies have accumulated technology for years. In contrast, “although China has an indispensable wealth of material in the manufacturing of neodymium magnets, but we can not create fine products." Therefore, the Chinese government announces that if other countries set up factories in China and teach us manufacturing technology, we can supply a large number of raw materials.", and one of the specific policy is to restrict exports. Definitely, the above is just Japanese magnets manufacturers’ views. "Japanese Economic News" reported that in July 2011, Hitachi Metals decided to manufacture neodymium magnets in China. It can be seen that after weighing between stable material purchasing and technology outflow risks, they still decided to guarantee purchasing first. However, even if their plants are in China, it may not immediately lead to technology flow out. On this issue, Japanese automobile manufacturers handle the problem well. If Japanese automobile manufacturers intend to sell motor vehicles in China, they have to establish joint venture with Chinese corporations and build factories in China. China can obtain technology accordingly from joint ventures." In exchange for permission of sales of Japanese motor vehicles in the huge Chinese market, we request for instructing us technologies that require years’ accumulation, such as motor technology. In this case, it is much like that of neodymium magnets.The Japanese auto-mobile manufacturers have been outwitted China’s intention. One Japanese technical personnel located in China admits: "Although we have to transfer technology to the joint venture, we will not bother to teach if they do not ask." In other words, even if handing over the drawings, they will not make us understand their design idea, and then new products can not be developed by others. In fact, foreign car manufacturers (has joint venture with China) have an absolute advantage in China’s auto market, and the current reality is that "China's domestic automobile manufacturers did not grow up as the Chinese government had envisaged."(above is provided by the technical staff ) . Japanese neodymium magnets manufacturers are working hard to develop a new technology which can reduce the import of raw material from China rely on new can reduce the dependence on Chinese raw materials. However, even if research and develop the new technology, it also need time to apply the technology to manufacturing process. Therefore, Japanese neodymium magnets manufacturers should learn the wisdom of juggle in the production site from automobile manufacturers. View Details

Sintered Neodymium Magnets

2013-06-23

Sintered neodymium magnets are an indispensable and crucial part to hybrid electric vehicles in the drive motor. Compared with other magnets, have not only strong magnetic force which reaches high power of driving vehicles, but also can reduce size motor make it fit for vehicle use.To … Sintered neodymium magnets are an indispensable and crucial part to hybrid and electric vehicles in the drive motor. Compared with other magnets, neodymium magnets have not only strong magnetic force which reaches high power of driving vehicles, but also can reduce the size of motor to make it fit for motor vehicle use.To manufacture neodymium magnets, we need to shatter those contain necessary materials alloy into particles, forming these particles, and then sintering. After that, we need to cut the sintered ones into the needed size to complete the whole process. What the process feels like making a cake.Of course, the actual mass production of high quality neodymium magnets is not so simple. We not only need to unify particles’ sizes into 3 ~ 5μm, but also should pay attention to well-proportion of particles’ shapes. In addition of that, we should consider the heating methods of sintering. In short, it needs to spare lots of efforts to make.For an instance, “shaping process in magnetic field” after crushing alloy to 3 ~ 5 μ m is one of them. This procedure is to make shattered micro powder (micro magnets) has their orientation. The orientation refers to unify the micro powder magnetized direction into a fixed one. The more unified the magnetized direction is, the higher residual magnetic flux density gets. The implementation of this process needs to fill the micro powder into mould and strengthen the magnetic field to orient the micro powder before carrying out forcing molding process.In order to achieve highly-unified orientation, creating a space of homogeneous magnetic field in the mould is quite necessary and important. Due to the configuration of the electromagnet and sizes, shapes, materials of mould result in uneven magnetic field and poor orientation, adopting magnetic field analysis or other methods to fine-tuning the magnetic field to achieve its homogeneity is necessary.On manufacturing neodymium magnets, just as many reports reported, China plays a big role in it. Because Dy (dysprosium) is mostly mined in China, but China has begun to have a restriction on exports. Under this limitation, the decrease in supply Dy metal in market drives Dy metal prices rising up to US$ 3,100 per kg in July, 2011, reaching about 10 times than that of one year ago. View Details

Ferrite Magnets Material

2013-06-23

Ferrite magnets are ferromagnetic metallic oxides. In regard to the electrical characteristics, resistivity of ferrite magnet is much higher than metal and alloy magnetic material, have dielectric properties. It has superior conductivity in high frequency. Therefore, this become a widely … Ferrite magnets are ferromagnetic metallic oxides. In regard to the electrical characteristics, the resistivity of ferrite magnet is much higher than resistivity of metal and alloy magnetic material, and the ferrite have higher dielectric properties. It has superior magnetic conductivity in high frequency. Therefore, this magnets have become a widely used nonmetallic magnetic material in the field of weak electric and high frequency. Because the magnetism stored unit volume is low, saturated magnetized intensity is low. It limited the application of ferrite magnets in the field which request high energy density in low frequency with high voltage and high power. This is suitable for high frequency electromagnetic device. According to the different magnetic properties and application, ferrite are classified six categories including ferrite permanent magnets, hard ferrite, flexible ferrite, rectangular magnetic loop ferrite, gyro-magnetic ferrite and piezo-magnetic ferrite. Because the production process and appearance looks like ceramics, ferrite is also called ceramic magnets. 1. Flexible ferrite magnetsFlexible ferrite magnets are easy to be magnetized and demagnetized in the relatively weak magnetic field, such as zinc chrome ferrite magnets and nickel zinc ferrite magnets etc. The flexible ferrite magnets are widely used in industry with many varieties, large quantity and high production value. It mainly used for various inductance components such as magnetic core of filters & transformer, radio magnetic core, tape recording and video head etc, and it is also the important materials for magnetic recording components.2. Ferrite permanent magnetsFerrite permanent magnets are compound with single axis anisotropic hexagon structure. It is made of barium, strontium, lead and the compound of interstitial. China Rare Earth Magnet Limited have isotropic and anisotropic ferrite magnets. Because the ferrite permanent magnets are able to longtime keep strong constant residual magnetism after the outside magnetizing field disappears, then it can be used to produce constant magnetic field in outside space. The application as permanent magnet usage is very extensive, for example: in all kinds of electric meter, generators, telephone, speaker, television and microwave devices. 3. Hard ferrite magnetsHard ferrite magnets are not easily demagnetized after magnetizing. Therefore, it is known as permanent magnetic material and constant magnetic materials, such as barium and steel ferrite magnets etc. It is mainly used for telecom device: the recording device, pick-up sets, speakers, magnetic core of various instruments. 4. Gyro-magnetic ferriteUnder the action of mutually perpendicular steady magnetic field and electromagnetic waves magnetic filed, the plane polarized electromagnetic wave spread with certain directionality in material internal, but the polarization plane will continue to roll around the spreading direction, which is expression of gyro-magnetic ferrite. Metal and alloy material also have gyro-magnetic property, but because of the low resistivity, huge loss of the eddy, the electromagnetic wave can't further enter inside, can not be used. Therefore, the application of gyro-magnetism is the exclusive filed of ferrite magnets. The gyro-magnetic ferrite is mostly combined with waveguide tube and transmission as various microwave devices which are used radar, communication, navigation, remote sensing and other electronic equipments. 5. Rectangular magnetic loop It is rectangular hysteresis loop ferrite material. Its characteristic is that the weak external magnetic field can make magnetization and achieve saturation, even remove the magnetic field, the magnetic strength can keep same saturation level. Such as magnesium manganese ferrite magnet, lithium manganese ferrite magnets have the characteristics. Rectangular magnetic loop ferrite is widely used for kinds of electronic computer memory magnetic core. 6. Piezo-magnetic It mechanically elongate or shorten along magnetization direction when it is magnetizing, such as nickel zinc ferrite magnets, nickel copper ferrite magnets, nickel chrome ferrite and so on. Piezo-magnetic ferrite is widely used for transducer which is for mutual transformation of electromagnetic energy and mechanical energy, as magnetostriction components used for ultrasound. View Details

Samarium Coblat Permanent Magnets

2013-06-23

Samarium cobalt magnets are rare earth permanent magnets, which have two kinds of components: SmCo 1:5 & 2:17. The advantage magnet is good performance in Hcb, Hcj BH max and high working temperature. As the second generation neodymium also called samarium or magnets. … Samarium cobalt magnets are rare earth permanent magnets, which have two kinds of components: SmCo 1:5 & SmCo 2:17. The advantage of SmCo magnet is good performance in Hcb, Hcj & BH max and high working temperature. As the second generation of neodymium magnets, SmCo magnets are also called samarium cobalt magnets, samarium magnets, SmCo permanent magnets or rare earth SmCo magnets. The mixture of the metal Samarium, cobalt and other rare earth elements is melted to be alloy and then smashed, compressed, sintered to be the magnet material. As a member of rare earth magnet family, samarium magnets own three properties: 1. stable magnetism; 2. high working temperature (Most curie temperature is over 800℃. Max working temperature can reach 250-350℃); 3. good performance in corrosion-resistance even without protection coating. As a result, samarium cobalt magnets are widely used in motors, instruments, sensors, detectors, engines, radars, aerospace, war industry, communications, medical equipments and other high-tech area. Samarium permanent magnets can be customized into different shapes such as cylinder, disc, rectangle, segment etc. Compared with the neodymium magnets, Samarium cobalt magnets are more suitable to work in high temperature environment. It’s good to be used to manufacture different kinds of permanent magnet motors with high performance, and also those products under extremely complex working conditions. Moreover, its anti-corrosion ability is very strong so that its surface does not need to be electroplated. Because samarium, the principal constituent of samarium magnet, owns low reserves on Earth, the price is extremely expensive. The cobalt mineral in the SmCo magnet is complex to withdraw and smelt, with low quality, therefore there are various extraction methods, which are complex, while the returns-ratio is low. The process of milling run cobalt ore generally includes the hand sorting, the gravity separation, the froth flotation. This may withdraw 15-25% cobalt ore concentrate. The counter electromotive force suppression technology is generally divided into three ways. The first kind is the variable magnetic force way, which changes the magnetic force of revolving magnets by using samarium cobalt magnets with variable magnetic force. The second kind is the coil cut way, which divides the stator coil into two parts. The electric current will go through two coils under the slow-speed and go through only one coil under the high speed. The third kind is the exciting coil way, which changes the magnetic flux by changing the electric current through the coil. The motor technology, used in the new generation of electric automobile, the motors with variable magnetic force attracts high attention. The motors with variable magnetic force is a kind of technology that can change the magnetic force in the motors depending on the revolution of the motors. Recently the method of changing the magnetic force of stators starts to be practical. At present Toshiba is developing the method of using the motors with variable magnetic force. Toshiba selects samarium magnets. The magnetization and demagnetization of motors with variable magnetic force is realized with the high short pulse electric current through the stator. Toshiba has used this motor on the washer. This makes high torque possible under slow-speed of revolution when lavation, and simultaneously realizes the high efficiency under high speed when dehydration. From this Toshiba reduced the power consumption by 16%. View Details

Rare Earth Neodymium Magnets

2013-06-23

Neodymium rare earth permanent magnets have advantages with lightweight, efficient energy, which is the most promising, called "King of Permanent Magnet". With continuous development new fields application, global neodymium industry expected to remain a growth rate 15% in next … Neodymium rare earth permanent magnets have advantages with lightweight, efficient energy, which is the most promising, is called "King of Permanent Magnet". With the continuous development of new fields of application, the global neodymium industry is expected to remain a growth rate of 15% in the next five years, while China is expected to maintain 20% growth rate. Product scarcity coupled with the continuous development of applications, making the rare earth permanent magnets is intentioned by more and more, which becomes the " sweet pastry" in the capital market. As a country of storing rare earth, regards of the understanding of rare earth strategic resources for a long-term process. The changeable price of rare earth is manifestation in the 2011. Since at the beginning of 2011, the main rare earth prices rose more than five times. On the state of developing our country by technological power and economic. On the one hand the government restricts rare earth to export, while encouraging the rare earth new materials and application of rare earth products to have a rapid development. Neodymium magnets, which as an important part of magnetic material, have become a mainstream high-end magnetic products. In global country, the production of China neodymium industry is more than 80%, the output value is no less than 60%. At the beginning of 2011, along with the rare earth prices rose sharply, the market prices of neodymium kept synchronous rising. Neodymium manufacturers almost 100% transferred costs, and become the beneficiaries of the industrial chain. Neodymium industries have a broad prospect in development. China Rare Earth Magnet Limited mainly produce sintered and bonded neodymium magnets, and our products are widely applied in hard disk drives, CD-ROM drives, automotive micro-motor. Rare earth permanent magnet material own highest magnetic properties currently, and it has been the key materials supported by national policy to encourage to develop. Which complies with the development of new energy and economize on energy use in the future long-term trends, especially in the field of electronic information, energy-saving motors, new energy, new energy automobile demand of high-performance neodymium applications will continue to maintain rapidly growth. In the backdrop of the "energy saving, emission reduction”, wind power, new energy vehicles and energy-saving appliances and other industries developed rapidly, which directly stimulating the demand for neodymium magnets. The production capability of China Rare Earth Magnet Limited expected to release further. China Rare Earth Magnet Limited continues to release the production according to the changes of downstream in demand in 2012. Especially the production and sales of hard-disk magnets and car magnets are expected to maintain growth. View Details