Sintered NdFeB magnetic function and application of wind turbines

Is an NdFeB magnet and the magnet is generally the same, and its excellent magnetic function called " Magneto ." NdFeB sintered NdFeB and bonded NdFeB divided . Sintered NdFeB corrosive , the surface to be coated , usually zinc, nickel, zinc receiver magnet environmental , environmental nickel, nickel-copper- nickel, nickel- copper-nickel and other environmentally friendly ; each direction has bonded NdFeB magnetic , corrosion-resistant .

Sintered ndfeb magnets magnetic material has excellent function, have been widely used in many fields of electronic magnetic separator magnetic , electrical machinery, medical equipment, toys, packaging , hardware, machinery , aerospace and other , more common use of the product with a permanent motors , speakers, magnetic separator, computer disk drives, magnetic resonance imaging device surface.

Permanent magnet wind generator with high magnetic properties of sintered NdFeB magnets, coercivity sufficiently high temperature to avoid loss of field magnets . The life of the magnet depends on the material and surface -treated substrate corrosion . NdFeB magnets corrosion should start from the manufacturer .

Work environment is very harsh wind generator , it must be able to withstand heat, cold , wind , humidity and even salt spray test. Design life of the wind turbine is generally two years. At present, both small wind turbine or a megawatt -class wind turbines are made of sintered permanent magnet NdFeB . Therefore, the choice of NdFeB magnetic parameters , as well as the requirements for corrosion resistance magnet is very important .

Classification Ferrite Magnets

Ferrite magnets are sintered permanent magnets , barium and strontium iron body composition, in addition to this there is a strong anti- magnetic demagnetization performance , as well as low-cost advantage. Rigid and brittle ferrite magnets , require special machining processes. Magnet due to its heterosexual orientation along the direction of manufacture shall be taken along the direction of magnetization and their homosexual orientation because there is no magnet can be magnetized in any direction , even though surface pressure is often minimal side will find slightly stronger magnetic induction . Energy product in the range 1.1MGOe to 4.0MGOe. Due to the low cost ferrite magnets have broad applications , from motors, loudspeakers to toys , crafts , and thus is the most widely used permanent magnet materials .

It is the main raw materials include ferrite magnets BaFe12O19 and SrFe12O19. Manufacturing method made by ceramic technology , texture hard, brittle materials is due to ferrite magnets have good temperature resistance , low prices , moderate performance, has become the most widely used permanent magnets.

Classification ferrite magnets rarely , only nickel-zinc ferrite magnet and Mn-Zn ferrite magnets. Although only one word, but their frequency of use but has a significant and severe differences.

Permeability ferrite magnet exceptionally high , as opposed to a low-frequency impedance of which is very significant , the high frequency impedance of the correspondingly small . Ferrite magnet can be different according to the needs of industry to a different selection of appropriate technology , to produce the magnet . Ferrite bead at different frequencies will have different resistive . Its impedance versus frequency bump of proportional , should the frequency increases, it will rise sharply out of the ferrite magnet resistive realized .

These reflect the ferrite magnets is also its own characteristics that promote the use of that individual features is its usefulness . However, due to the use of the frequency of contact , ferrite magnet has two categories, then the use of the scale of these two categories is not the same, so the use of the process must be tough to distinguish , so the difference between the right caliber of iron proper use of ferrite magnets .

SmCo magnets are the second generation of rare earth permanent magnet from magnetndfeb.com

SmCo magnets are the second generation of rare earth permanent magnet , is divided into 1:5 type (SmCo5) and 2:17 (Sm2Co17) two kinds. Its main feature is magnetic , good temperature performance. The maximum operating temperature can reach 350 °. Compared with NdFeB magnets, SmCo magnets better suited to work in high-temperature environments. SmCo is suitable for the manufacture of various high-performance permanent magnet motor and the working environment is very complex applications. In addition , samarium cobalt magnets rust capability, which generally does not require plating surface treatment, unless there are special requirements .

Nature samarium cobalt magnet cobalt : cobalt steel gray metallic with shiny , melting point 1493 ℃, specific gravity 8.9 , relatively hard and brittle, Cobalt is ferromagnetic , hardness , tensile strength, machinability , thermodynamic properties , the electrochemical behavior similar to iron and nickel . When heated to 1150 ℃ magnetism disappears. Valence cobalt is divalent and trivalent . And water is not the role of the moist air is also very stable at room temperature . When heated in air above 300 ℃ oxidation of CoO, Co3O4 during combustion to incandescence . Hydrogen reduction process into a fine cobalt metal powder in the air can be spontaneous generation cobalt oxide.
SmCo magnets are mainly used in a variety of sensors , motors, automotive components , micro-motors , sputtering equipment, magnetic devices , aerospace and other special requirements for temperature field . Because there is radiation samarium cobalt magnet function and, therefore, widely used in spacecraft and other fields.
China Rare Earth Magnet Limited - magnet company , specializing in the production of magnetic materials manufacturer, specializing in the production of rare earth permanent magnets , such as sintered NdFeB magnets , Bonded NdFeB magnets, SmCo magnets and Alnico magnets. We also supply ferrite magnets, rubber magnets and magnetic properties of some of the components .
Founded in 1985 , and more than 39,000 square meters of room , equipped with a neodymium magnet on hand related to 3000 annual manufacturing capacity. Due to enhanced technology and improved internal management has to be completed in the summer of 1998 passed ISO9002 licensed , and with ISO 9000 amounts related to the 2000 version of the plan to modify at 06 in 2001 , by 2005 the TS16949 permission. China Rare Earth Permanent Magnet Co., Ltd. , another takes great focus on environmental safety as well as demand-based manufacturing execution procedures related purely to ISO14001 . Up until now , China Rare Earth Permanent Magnet Co., Ltd. , can give a lot more than 10 patents in the permanent magnetic field such as crystallization and shooting method for injection , which is the processing power and high-power magnets such as N52, 50M -related production orders , 48H, 45SH, 40UH and 38EH and so on. In the case of the client request , we can provide Sumitomo Corporation (SSMC) NdFeB magnetic obvious.

Brief NdFeB magnets are widely used

Practical application of the magnet is now in daily life is quite common. Took part in the market a variety of magnet , NdFeB , strong magnet , a permanent magnet , etc., some of these types of magnets are present in the market , there is certainly useful.

NdFeB magnets with small size, light weight and strong magnetic features, is by far the best price-performance magnets. Expected in the next 20-30 years, there can be no alternative to NdFeB magnets in magnetic materials appear. Production of NdFeB magnets main raw materials are metal neodymium , iron and boron alloys and other additives.
NdFeB magnet industry 's core technology is mainly reflected in the manufacturing process , embodied in uniformity, consistency, quality and processing , coating and other aspects of the quality of their products .
NdFeB magnets as the third generation of rare earth permanent magnet materials , with high performance and low cost , which are widely used in energy , transportation, machinery, medical , IT, electronics and other industries , especially with information technology as the representative of the knowledge economy development , to NdFeB rare earth permanent magnet materials industry and other functions continue to bring new uses , which brings a more promising market for the NdFeB industry .

NdFeB magnets are divided into

1. Bonded NdFeB

2 sintered NdFeB

NdFeB magnet range of applications as follows:
Acoustic field : the speaker , receiver, microphone , alarm, stage audio, car audio and so on.
Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meter, meter , sound meter , a reed switch, sensors.
Electric field : VCM, CDDVD-ROM, generators, motors , servo motors, micro- motors, motors, vibration motors.
Machinery and equipment: magnetic separation , magnetic separation , magnetic crane, magnetic machinery.
Healthcare: MRI scanners , medical equipment, magnetic health products , magnetic fuel economy and so on.
Other industries: magnetized Wax , pipe descaling , magnetic fixture, automatic mahjong machine , magnetic locks, doors and windows magnetic , magnetic luggage , leather magnetic toys , magnetic tools , gifts and packaging.

Jing Pei electronically conductive slip ring Definitions and Notes

Slip ring is also called conductive ring , slip ring , slip ring , slip ring and so on. It can be used in any desired continuous rotation while they need from a fixed to a rotating electromechanical system power and signal transmission in . Slip ring can improve system performance and simplify the system structure , prevent the wire strain caused during the rotation .

Note slip ring

1 , slip ring is a precision parts, customers in the course of Do not disassemble , to avoid affecting the performance of the slip ring

2 , in the use of non- slip ring contacts gasoline, bananas, water and other organic solvents

3 , slip rings are precision appliances, installing slip ring rotor and rotating parts must remain connected with concentric , non- scored with a hammer or strong squeeze , if the work environment has a strong vibration , the need to add shockproof device installed

4 , slip ring bearing the body can not make use , the wire can not withstand the external pressure

5 , slip ring is maintenance-free , so customers do not need to use the process of adding some lubricant to lubrication

Shenzhen Jing Pei Electronics With a strong R & D capabilities , as well as many years of experience in the development and production of the famous manufacturers and close cooperation , we can only provide general industria collector rings , but also according to customer requirements , specially designed , custom -specific specifications of the slip ring . From 6 to 96 -way road , from 2 amps to 50 amps , from 220 volts to 600 volts, from 100 to 10,000 rpm , and other special requirements, we can meet customer needs.

Types and application of rare earth magnets

With the updated science and technology, the choice of materials has become the object of scientists focused discussion. And the development of new materials, rare earth magnet greatly improved their level of application of rare earth magnets of high-tech industries, and its application technology in high-tech fields. The new materials include rare earth magnets rare earth magnet permanent magnet materials, rare earth magnets luminescent materials, hydrogen storage materials of rare earth magnets , rare earth magnets catalyst materials, rare earth magnets and other rare earth magnets ceramic materials and new materials such as rare earth magnets giant magnetostrictive material , giant magnetoresistance materials, magnetic refrigeration materials, optical refrigeration materials , magneto-optical storage materials.

Rare-earth magnet alloy composition because of different magnetic materials , the current can be divided into three categories: ( 1 ) rare earth magnets - cobalt permanent magnet materials : SmCo5, Sm2Co17; (2) rare earth magnets - iron permanent magnet materials : Nd2Fe14B; (3) Rare magnet iron nitrogen (RE-Fe-N system ) or rare earth magnet iron-carbon (RE-Fe-C system ) permanent magnet materials .

The highest performance magnets are rare earth magnets , rare earth magnets and Nd-Fe is the most powerful magnet. However, in the above 200 ° C environment , is the most powerful samarium cobalt magnet .

Types of magnets
Magnet , the magnet should be called , in English Magnet, magnet now mainly divided into two categories, one is soft , one is hard magnetic ; soft includes silicon steel and soft iron core ; hard magnetic include alnico , SmCo , ferrite and NdFeB , which, samarium cobalt magnet is the most expensive , the most expensive is the ferrite magnets , NdFeB magnets are the highest performance , but the performance of the most stable , best temperature coefficient Alnico magnet is , the user can select a different hard magnetic products according to different needs.

Application magnets

Currently NdFeB permanent magnet applications we have developed have been widely used in energy, transportation, machinery, medical , computers, household appliances and other fields. Another important application of rare earth neodymium magnets luminescent materials are rare earth magnets tricolor energy-saving lamps, high-end consumer market trends of magnets , rare earth magnets trichromatic phosphor It uses photoluminescent materials, rare earth magnet high luminous efficiency energy saving lamps , saving electricity , its application has been developed around the world attention.