neodymium magnet factory

The Terms About Magnet ,which you should know

Magnetic terms

In this post, we would like to introduce you some terms about the magnet. And that will not too difficult to understand. Most of the terms, will always be used in our daily business. so pls pay attention at this post.

Curie temperature

When the Curie temperature is reached, the magnetic material loses magnetism.

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Working temperature

The working temperature is the highest temperature that a magnet can be exposed to without permanent magnetic loss. It is an approximate value since there is a dependency on sizing. Factors such as mechanical or chemical stress can further limit the maximum service temperature. It is very important to check the temperature because the high temperature will “kill” the magnet. It will be dead.

Energy product (B × H) max

The maximum energy product from the flux density B and the field strength H is the most important quality value of a magnetic material. The higher the energy product, the greater the magnetic energy. The larger the (B × H) max value of a magnetic material, the smaller the magnet volume required for a particular task can be, given otherwise identical conditions.

Coercive force H c

Coercive field strength is the field strength that must be used to eliminate magnetization. The higher the value, the higher the magnetization resistance. One distinguishes HcB and HcJ.

Remanence (B r )

Remanence refers to the remaining magnetization in a magnet material that has been magnetized to saturation in a closed loop. The remanence is given in Gauss (G), Tesla (T) or Millitesla (mT).

Magnetic material energy product Retention coercivity Temperature coefficient Max. Operating temperature Curie temperature density
(B × H) max kJ / m 3 r mT cB kA / m cJ kA / m per 1 ° C ° C ° C g / cm 3
Barium ferrite isotropic 7.2 – 7.6 210 – 220 130 – 135 220 -0.2% 250 450 4.9
Barium ferrite anisotropic 28.9 – 29.5 390 – 400 145 – 160 150 – 165 -0.2% 250 450 4.9
Strontium ferrite anisotropic 24.5 – 25.5 350 – 370 210-245 220 – 255 -0.2% 250 450 4.9
AINiCo 500 35 – 36 1120 – 1160 47 – 49 47 – 49 -0.02% 400 890 7.3
Samarium Cobalt SmCo5 140 – 150 850-890 620-670 1100 – 120 -0.04% 250 720 8.3
Samarium Cobalt Sm2Co17 190 – 205 1000 – 1050 680 – 750 1195 – 1500 -0.03% 250 800 8.3
Neodymium Iron Boron NdFeB N35 * 260 – 285 1180-1220 860-915 > 955 -0.13% 80 310 7.4
Neodymium Iron Boron NdFeB N48 * 358 – 392 1370 – 1410 859 – 950 > 955 -0.13% 80 310 7.4

Values determined at 20 ° C temperature. * Versions up to 220 ° C operating temperature available.

neodymium magnet and board

Magnetic board and Neodymium magnet

Magnetic boards and neodymium magnets in a simple design
It’s been a long time since people had to rely on thumbtacks in the office. The good old pinboard has long been obsolete, today is multifunctional and clearly worked with magnetic boards. It does not matter if only one sheet, eight or fifteen should adhere at once – at least if you have the right magnet at hand like the neodymium bar magnet.

An aesthetic and durable alternative
A professional working atmosphere is indispensable if productivity is to sprout up and fun in the trade should remain. While pinboards with their chaotic plug-in system are more likely to distribute information according to where the cork is not yet used, magnetic boards are an aesthetic and durable alternative.

neodymium magnet and board

Metal magnetic boards are inexpensive and powerful
With their customizable size, magnetic boards are not only suitable for meter-long walls, but also for small-scale offices or SOHO rooms. In order to increase the magnetic adhesion and counteract the Scherkarft, magnetic boards made of metal are particularly recommended. Here is the price-performance ratio, because metal magnetic boards are inexpensive to purchase and very easy to install.

Simple design instead of dangerous tacks
Although you can not deny a certain charm pinboard, after all, they are almost a symbol of the offices and youth rooms of the 80s. But the simple design in combination with the suitable and handy magnets, for example, the neodymium bar magnet, does not distract in any way from the presented content. In addition, there is no danger of hurting yourself unnecessarily and painfully with thumbtacks.

Worth knowing: Shear forces
Scissors is a lateral displacement movement. That means, if you have two buttered slices of toast lying on top of each other and you pull on the side of the top, while holding the lower one, then you’ll miss the whole thing. In this case, mainly the butter layer. The required force is just the shear force. In technology, something like that is used to test the strength of things. In addition, there is still the traction. In this case, you would pull up the top toast.

Neodymium magnets, which are easy to grasp, are particularly suitable magnets for a pin board. We therefore recommend to use bar magnets of size 7x14mm, 9x9mm or 11x11mm, as they are strong enough to hold several pieces of paper at once and are very easy to grip due to their length.