HSMAG can supply Neodymium raw magnets (NdFeB) - Permanet magnets with super strong power!
Neodymium magnets can be found on the market with the name of magnets neodymium iron boron, or NdFeB magnets. Neodymium is part of that category of materials known as "rare earths." The name of the rare earths is not due to their concentration in nature but to the difficulty which occurs in the separation of these from other materials with which they are linked through chemical bonds. For this reason, it can be said that the neodymium magnets are not the cheapest but their magnetic force is among the most powerful, this power is found already in a magnet of few centimeters. What you need to do is look for the form most suited to you. We offer the following forms: discs, cones, rings, cylinders, segments and blocks, cubes and spheres. Even our self-adhesive magnets are versatile for many uses because they stick practically everywhere.
Sintered Neodymium-Iron-Boron (NdFeB)
Disc, Cylinder, Block, Ring, Countersunk, Segment, Shpere, Trapezoid, Irregular shapes and more. Customized shapes for Sintered NdFeB Magnet are available.
Ni-Cu-Ni, Nickel, Zinc(Zn), Gold(Au), Silver(Ag), Copper(Cu), Epoxy, Chemical, PTFE, Parylene, Everlube, Passivation and more.
Our Technology Advantage
R&D center, Quality control team and professional machining technicians, we can surpass our competitors in the stability of quality and superiority of property.
Our Delivery Advantage
The lead time must be 2-5 days quicker than industry average because of more flexible machine process control.
Our Price Advantage
The price is 5-10% cheaper than industry average because of an excellent and efficient management system.
Which types of Permanent magnets?
Sintered Neodymium Magnet is one of the high performance rare earth permanent magnets, which use neodymium (Nd), iron (Fe), and boron (B) as their main ingredients and is susceptible to demagnetization when exposed to elevated temperatures. Neodymium magnet is a new kind of magnetic material developed with excellent magnetic characteristics. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs. There are many grades which can stand high temperatures. Sintered NdFeB Magnet can be used in sensors, motors, filter automobiles, magnetic holders, loudspeakers, wind generators, medical equipments etc.
Bonded NdFeB magnet is made through "compression molding" or "injection molding" of the mixture of quick-quenched NdFeB magnetic powder and bonding agent.Due to its high accuracy in size, the bonded maget may be formed into magnetic components of relatively complicated shapes. Also,it features single-time molding and multi-pole orientation. The injection molded magnet has a high mechanical strength and may be molded together with other matching parts.
SmCo Magnet is a high performance, low temperature coefficient permanent magnet with its high working temperature - 350 degree centigrade. When working above 180 degree centigrade, SmCo Magnet maximum energy product BH and steady temperature are superior than NdFeB magnetic materials. SmCo Magnet needn’t to be coated because it is difficult to be eroded and oxidized. Sintered SmCo is widely used in motors, watch, transducers, instruments, positional detector, generators, radar communications, medical equipments, various magnetism spreading devices, magnetic processor, electrical engineering and magnetic derrick.
Sintered Ferrite magnet (Ceramic Magnets, Hard Ferrite Magnet) were developed in the 1960's as a low cost alternative to metallic magnets. Even though they exhibit low energy (compared with other permanent magnet materials) and are relatively brittle and hard, Sintered Ferrite magnet (ceramic magnets, Hard ferrite magnet) have won wide acceptance due to their good resistance to demagnetization, excellent corrosion resistance and low price per pound. In fact, measured by weight, ferrite represents more than 75 percent of the world magnet consumption. Sintered Ferrite Magnet (Hard Ferrite Magnet) is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and automotive sensors.
Cast AlNiCo Magnet can be cast to form a vast range of complex shapes and sizes at an economical cost. Eclipse Magnetics Alnico magnets are ideal for high temperature applications up to 550ºC, Using patterns and simple moulding techniques. Cast AlNICo Magnet is very stable, has good corrosion resistance and a typical hardness of 50 Rockwell C. Once cast, the material is so hard that the only machining possible is grinding. Cast AlNICo Magnet represents the most versatile magnet material available. The range of properties can be accurately designed for specific applications by changes to element analysis and heat treatment.
Flexible Rubber magnets are compound materials made by mixing ferrite magnet powder and rubber. Pressing or rolling makes the finished flexible rubber magnet. Because the material has good plasticity, the finished flexible rubber magnets or semi-manufactured flexible rubber magnets can incise, stiletto, slit or back up other materials randomly, have good antisepsis and difficult demagnetization. The raw materials are plentiful, so the price is lower. Flexible Rubber magnets are natural Flexible Rubber magnets or isomer Flexible Rubber magnets. Natural rubber magnets have weak magnetism, are used on iceboxes, presswork and marketing and promotion premiums. Isomer rubber magnets have strong magnetism, and are used in such applications as micro-motors and magnet toys.
What have application of Neodymium(NdFeB) magnets?
Neodymium magnets are the strongest type of permanent magnet made. They have replaced other types of magnets in the many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives, and magnetic fasteners. Because neodymium magnet have greater strength which allows the use of smaller, lighter magnets for a given application.
Head actuators for computer hard disks;
Magnetic resonance imaging;
Magnetic guitar pickups;
Loudspeaker and headphones;
Spindle and stepper motors;
Drive motors for actuators;
Electric generators for wind turbines.
What is Neodymium Iron Boron Magnet Materials?
Sintered neodymium-iron-boron magnets (also known as NdFeB, NIB, Nd-Fe-B or Neo magnet) are the most powerful commercialized rare-earth permanent magnets available today, with maximum energy product ranging from 26 MGOe to 52 MGOe. NdFeB permanent magnet made from an alloy of neodymiumm, ironn, and boron to form the Nd2Fe14B tetragonal crystalline structure. and it is the third generation of permanent magnet developed in the 1980s. It has a combination of very high remanence and coercivity, and comes with a wide range of grades, sizes and shapes. With its excellent magnetic characteristics, abundant raw material and relatively low prices, NdFeB offers more flexibility in designing of new or replace the traditional magnet materials such as ceramic, Alnico and SmCo to achieve high efficiency, low cost and more compact devices.
A powder metallurgy process is used in producing sintered NdFeB magnets. Although sintered NdFeB is mechanically stronger than SmCo magnets and less brittle than other magnets, it should not be used as structural component. Selection of NdFeB is limited by temperature due to its irreversible loss and moderately high reversible temperature coefficient of Br and Hci. The maximum application temperature is 200 °C for high coercivity grades. NdFeB magnets are more prone to oxidation than any other magnet alloys. If NdFeB magnet is to be exposed to humidity, chemically aggressive media such as acids, alkaline solutions salts and harmful gases, coating is recommended. It is not recommended in a hydrogen atmosphere.
Typical Physical Properties
Curie Temperature 320 - 380 °C
Coefficient Of Thermal Expansion - Perpendicular 1.0 - -3.0 x 10-6 °C-1
Coefficient Of Thermal Expansion - Parallel +5.0 - +8.0 x 10-6 °C-1
Electrical Resistivity 120 - 160 µO·cm
Density 7.4 - 7.8 g·cm-3
Vicker's Hardness 550 - 650 Hv
Young's Modulus 150 - 170 kN·mm-2
Bending Strength 0.18 - 0.29 kN·mm-2
Compressive Strength 0.8 - 1.0 kN·mm-2