Sinter NdFeB Magnet with high quality and low price
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- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 10000000 pc/month
- Option:
- NdFeB ring NdFeB block NdFeB segment
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Item specifice
Rare earth Neodymium magnets (NdFeB) have been available for industrial application since 1984. Neo magnets have extremely high magnetic energy and therefore are used in applications which require high powered magnets, as well as applications where size and weight reduction are of interest or need to be considered. These qualities have made NdFeb magnets preferable over the commonly used larger and less powerful Ferrite magnets.
The main raw materials NdFeB permanent magnets are rare earth metal-Neodymium (Nd) 32%,metal element Iron (Fe) 64% and nonmetal element Boron(B) 1% , and some small amount added Dysprosium (Dy), Terbium(Tb), Cobalt (Co), Niobium(Nb),Gallium (Ga),Aluminum (Al),Copper (Cu) and other elements. Ternary system neodymium permanent materials are of Nd2Fe14B compound as a matrix, its compositions should be similar with the molecular formula of compound Nd2Fe14B, but, when it is proportioning according to the composition of Nd2Fe14B compound, the magnet performances are very low, and even without magnetic, just on the actual magnets, when the content of neodymium and boron are more than on Nd2Fe14B compound, we can get the better permanent magnet performances.
Neodymium magnets can be divided into three main groups:
1.Regular Neodymium
2.High corrosion resistant Neodymium
3.Bonded Neodymium (Isotropic): Manufactured by the injection of plastic material and Neodymium into a mold. This production method yields a very precise magnet which does not require further grinding and does not suffer substantial current loss.
Neo magnets are known for their high temperature resistance, making them durable and functional in temperatures exceeding 200°C. This quality makes them ideal for heavy industry applications. Sintered Neodymium, however, is sensitive to oxidization and can develop corrosion, so magnets are usually coated with Nickel+Copper+Nickel,Nickel+Sn, Zn(galvanization), Epoxy and Passivation for their protection.
Characteristics of Surface Treatment
Coating Performance
| Zn | Colour Zn Cr3+ | NiSn | NiCuNi | Epoxy | Passivation |
Colour | White | Multicolor | Silver | Silver | Black | Silver |
Thickness(μm) | 6-15 | 6-15 | 10-30 | 10-30 | 10-30 | 1-5 |
Pressure Cooker Test (120℃,2atm,100%RH) | >8hr | >8hr | >24hr | >24hr | >24hr | |
Salt Spray Test (35℃,5%NaCl,1.2atm) | >24hr | >72hr | >48hr | >48hr | >96hr |
- Q:Magnets, how do they work?
- The poles of the atoms in the magnet all point in the same direction. Thus the aggregate effect is that the whole magnet attracts other objects (when the effect of all the individual atoms in the magnet work together).
- Q:I have both items in my hand right now. A former question about hard drive operation created several responses saying stainless steel is magnetic and/or my information was wrong. My information comes straight from the guts of a hard drive. Can somebody explain what I am overlooking about this situation? Or why my information is wrong?
- Back in the 1960's, when hard disk platters were first being manufactured, it did not take long for manufacturers to realise that the platter itself needs to be constructed from non-magnetic material, otherwise residual magnetism in the platter will affect the data recorded on the surface. So, as far as I know, most platters are actually aluminium, not stainless steel. As LeAnne has said, information is only recorded on the surface, ferrite based material, not on the disc itself.
- Q:1.) Tempering a steel is the process of changing the internal grain structure, it is usually used in conjection with the Normalization process.2.) Annealing is the process of controlled or times cooling which reduces intergranular boundary structures, it is usually used in conjuction with the weilding process.3.) Rust is a Material change that is very simliar in effect to the Heat Treat process know as Decarburization.4.) Decarburization often cause fine surface cracking as a by-product.5.) ERW-Line Pipe is always Bevel Finished. This is the reason for its higher strength in operational application.
- so that there boobs can look bigger and make a guy like them
- Q:What tests can be made of magnetic materials?
- The question is a little broader. Magnetic material, so many classifications.
- Q:Which is a stronger magnetic material:Iron or steel?**PLZ ANSWER** !THANK YOU!
- There are hundreds and hundreds of different types of steel and there are different types of commercial alloys called iron, different cast iron alloys for example. There are different ways to measure the magnetic properties so, depending on exactly what you are interested in, you might want to be more specific about your requirements (how do you define stronger). It also depends on the size and shape of the pieces. One correct answer would be: the biggest one. It also depends on exactly how it is magnetized and the direction that it is magnetized. It will be different if the piece is a single crystal of Fe vs a a heavily cold worked structure. So. It depends. In general. for a given size piece and a given magnetization, pure iron will, very generally, be stronger magnetically because you have slightly more Fe atoms than if it is an alloy with more non-magnetic atoms. Of course, if the steel has a lot of Co and Ni (as in some stainless steels) it might be magnetically stronger than pure Fe.
- Q:If I lay one of these signs on top of another upside down sign, why dont they repel each other
- The magnetic material in the thin rubber that makes the flexible magnets to hold the sign is not organized into large magnetic fields that can oppose each other, but forms many small magnetic domains that can cling (weakly) to the metal. If you were to put a piece of paper on the magnet strip and sprinkle iron filings, instead of nice loops from one pole to another as with a bar or horseshoe, you would have to look closely to see small fields. So when you put two signs together, the chances of the domains matching enough to repel are very small.
- Q:What is the difference between magnetic force and electromagnetic force?
- Magnetic force can be attributed from the main source of attraction and repulsion which is composed of magnetic material such as permanent magnets. Electromagnetic force can be derived from the movement of electrons caused by the impressed voltage to a current carrying conductor. Thus, in comparison, Electromagnetic force can only be produced with the required elements which are; current, voltage and conducting materials.
- Q:solenoid, magnetic flux through square loop?
- complex matter. search from google and yahoo. it might help!
- Q:Please don‘t give me any crap about a generator makes electricity.I know that. I want to know what it has to do with magnetism, what creates the magnetic field that it passes conductors through. Basically, if someone out there actually knows something about this, it would be awesome if you would share that knowledge with me. Thanks.
- preobably is being honest, have him show you all used parts
- Q:i know my wording isnt all that clear, but any one know of some thing you can put between a magnet and some metal that would keep the metal from sticking to the magnet?
- The life of you vehicle may be affected. You may overrun the engine. The workshop mechanic will love you ;)
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Sinter NdFeB Magnet with high quality and low price
- Ref Price:
-
- Loading Port:
- Guangzhou
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 10000000 pc/month
- Option:
- NdFeB ring NdFeB block NdFeB segment
OKorder Service Pledge
OKorder Financial Service
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