High Performance Customized SmCo Discmagnet for Generator

 
A samarium-cobalt (SmCo) magnet, a type of rare-earth magnet, is a strong permanent magnet made of two basic elements samarium and cobalt.
They were developed in the early 1960s based on work done by Karl Strnat at Wright-Patterson Air Force Base and Alden Ray at the University of Dayton. In particular, Strnat and Ray developed the first formulation of SmCo5.
Samarium-cobalt magnets are generally ranked similarly in strength to neodymium magnets but have higher temperature ratings and higher coercivity.These samarium-cobalt magnet alloys (generally written as SmCo5, or SmCo Series 1:5) have one atom of rare-earth samarium per five atoms of cobalt. By weight this magnet alloy will typically contain 36% samarium with the balance cobalt. The energy products of these samarium-cobalt alloys range from 16 MG·Oe to 25 MG·Oe, that is, approx. 128-200 kJ/m3. These samarium-cobalt magnets generally have a reversible temperature coefficient of -0.05%/°C. Saturation magnetization can be achieved with a moderate magnetizing field. This series of magnet is easier to calibrate to a specific magnetic field than the SmCo 2:17 series magnets.
In the presence of a moderately strong magnetic field, unmagnetized magnets of this series will try to align their orientation axis to the magnetic field, thus becoming slightly magnetized. This can be an issue if postprocessing requires that the magnet be plated or coated. The slight field that the magnet picks up can attract debris during the plating or coating process, causing coating failure or a mechanically out-of-tolerance condition.
To address these requirements, temperature compensated magnets were developed in the late 1970s. For conventional SmCo magnets, Br decreases as temperature increases. Conversely, for GdCo magnets, Br increases as temperature increases within certain temperature ranges. By combining samarium and gadolinium in the alloy, the temperature coefficient can be reduced to nearly zero.
SmCo5 magnets have a very high coercivity (coercive force); that is, they are not easily demagnetized. They are fabricated by packing wide-grain lone-domain magnetic powders. All of the magnetic domains are aligned with the easy axis direction. In this case, all of the domain walls are at 180 degrees. When there are no impurities, the reversal process of the bulk magnet is equivalent to lone-domain motes, where coherent rotation is the dominant mechanism. However, due to the imperfection of fabricating, impurities may be introduced in the magnets, which form nuclei. In this case, because the impurities may have lower anisotropy or misaligned easy axes, their directions of magnetization are easier to spin, which breaks the 180° domain wall configuration. In such materials, the coercivity is controlled by nucleation. To obtain much coercivity, impurity control is critical in the fabrication process

 

Packaging & Shipping
 

Packaging:

usually inner carton -→ outer box (singer layer and double layer) -→ pallet and can be packaged per your request.

 

Shipping:

a: the weight is under 40Kg,we will choose DHL, FedEx or UPS with shielding box for you ;

b: the weight is over 100Kg,we will choose shipping for you;

c: the weight is between 40Kg-100Kg, per you request;
 

Payment:

L/C, T/T, Westunion and Paypal are all availalbe.

Our Services:
1, Free sample can be sent for your evaluation;

2, Reply will be sent to you in the first time.

3. Quick lead time: 7-25 days.

 

Company Information
1, Our factory is established in 2005;

2, We are a professional manufacturer of magnetic materials;

3, ISO9001: 2008 and RoHS certification assure you good quality;

4. We cooperate with many famous companies in home and abroad, such as Aisin Seiki, Keda in Yuyao, Prico, Siemens Ltd Australia, GM, BMW, BENTLEY

Q: What is the delivery time?
A: If the goods are in stock, we will deliver them immediately after we sign the contract and decide the payment. If the goods are out of stock, it will be produced from the material. The lead time is 7-25 days.

Q: How do you transport?
A: All available shipping ways could be applied, by courier, air or sea. Full-way tracking the cargos for you before the goods arrive.

Q: What's your packing?
A: we will offer the best package to protect the magnet

Q: What is your terms of payment ?
A: According to your request.30% Deposit ,70% when finish the product

Q:How to get sample?
A.For the exsiting sample :We will charge you as less as we can, if with DHL/FedEx account,few sample maybe free.
B.For the sample with your custom logo,after sample fee received,we will start sample making , usually 3-7 days,then send to you by express

 

If any question, pls contact us freely.