Info about power magnets
What is a power magnet?
The very powerful magnets are correctly called neodymium magnets but are called many different things, including super magnets, power magnets and neodymium magnets. They are not toys. They must be used and treated with respect, as their attraction is quite strong.
The smallest magnets can, among other things, used for hobby use, i.e. when you have to make your own fridge magnets, need a magnet-lock solution for toys or the like.
The large magnets are usually used by magnet enthusiasts who want to test the violent attraction (watch your fingers! ) and by companies that use them for machines and equipment.
Underneath all the product cards you can see how big a load capacity each magnet has. And that is no exaggeration. Some of the smallest sizes easily hold a pair of scissors, the medium magnets easily hold a heavy hammer, and the largest magnets can hold a bicycle. It just requires the material to be magnetic. The carrying capacity requires direct contact with the magnetic surface - i.e. a significantly lower load capacity applies for e.g. magnetic glass boards, where there is a glass plate between the magnetic plate itself and the magnet.
Below is some information about the dangers of using the magnets. You will find a link to the full list under each product, just as a list is included in paper version when ordering power magnets.
Strength and strength loss
Neodymium magnets are approx. 9 times stronger than ferrite magnets if you compare two magnets of the same size.
In theory, magnets never lose their strength. But after approx. 100 years, you can measure a minor deterioration of the magnetism. However, factors other than time can demagnetize a magnet, e.g. strong heat or repeated shocks to the magnet. Intense heat permanently destroys the magnet. But damage after impact (where the magnet's shell itself has not been damaged) can be rectified.
Take e.g. a magnetic knife rail: over the years the magnetism deteriorates - the blows from the knives challenge the magnets. But if you take a strong power magnet and swipe across the knife rail, you can regain strength.
Nothing happens to a neodymium magnet if it gets a small tab knocked off. But they break easily with careless use, as their magnetic field is so strong. You will hardly be able to avoid being left with a broken magnet if it slams together with another magnet at high speed.
Working temperature and storage
Up to 80°C (unless otherwise stated on the product card).
At temperatures above 80 degrees, neodymium permanently loses its magnetism. However, there is no lower limit for temperature effects for neodymium. That is why no minus degrees are indicated.
We recommend that power magnets be stored at room temperature. And if they are not in use, it is a good idea to have them stored in packaging, where the magnetic field is shielded and the magnets are not exposed to shocks and temperature influences to a large extent. We even have a felt-covered steel plate here in our workshop where we put the test magnets on when they are not in use. In this way, they are easy to remove from the plate again, and they are assembled and can easily be put in the drawer.
Danger of damage
The magnets have a very strong attraction. Careless use can cause bruises on the skin or injuries to the fingers.
Swallowing hazard
Magnets are not toys. Must be kept out of the reach of children. If you swallow magnets, the magnets can get stuck in the airways or elsewhere in the body and cause serious complications.
Danger of electric shock
Magnets are made of metal and can conduct electricity. The magnets must not come into contact with electricity, including sockets, as they can cause electric shocks.
Pacemaker
The magnets can affect pacemakers and implanted heart defibrillators. In the worst case, a pacemaker can switch to a test course and cause nausea and sickness. A heart defibrillator can stop working. If you use these devices, keep a sufficient distance from the magnets. Also, warn others using these devices not to get too close to the magnets.
Overload
Only use the magnets with the load specified under each product description on www.magnetz .dk. Overloading the magnets can cause the magnets to detach from the magnetic surface on which they were attached. Falling objects can lead to serious injuries.
CAUTION! The stated load, which is stated under each product sheet at www.magnetz.dk, only applies if the magnets are used correctly. Do not use the magnets in places where people could be injured in the event of magnetic force failure etc.
Danger of splinters
Colliding magnets can crack and cause splinters which can be thrown several times meters away and cause damage to the eyes and body. Avoid colliding magnets, wear safety glasses when handling larger magnets, and ensure that people nearby are also protected or properly restrained.
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