Maintenance And Feeding Of Various Magnets

Update:14-12-2020
Summary:

Magnets are like people. Some people don't like heat, a […]

Magnets are like people. Some people don't like heat, and some people don't like cold. Some are strong, some are easily damaged. Some are more dangerous than others.

There may be many things to remember, but proper handling and storage of magnets is the best way to ensure the best and lasting magnetization. Here are some best practices to help you maximize magnet performance.

Permanent magnet

When handling permanent magnets, always consider safety first. This means using gloves and safety glasses, and being careful not to pinch your hands and skin, which can happen without proper care. Don't put them in your pocket.

It must be handled carefully to prevent chips and cracks, and it starts when it is taken out of the box. Therefore, it is best to hand over the installation and removal of all magnetized components to trained personnel.

For storage, the original packaging should be your first choice. Try not to store them loosely or mix different types of magnets. If you want to store other magnets, keep them at a safe distance (so that they do not attract opposite poles) and do not exceed their magnetic field.

In addition, it is recommended that you keep the permanent magnet away from:

Explosive gas
high temperature
Hydrogen or salt water environment
Loose ferrous material
Magnetically stored data
pacemaker
radiation
These techniques are applicable to all permanent magnets, but different types of permanent magnets and non-permanent magnets also have different requirements.

Alnico

Although storage in a low humidity environment is recommended, Alnico magnets do not care about temperature. Arrange the smaller magnets in a row, wrap them in foam or cardboard, and then wrap the larger magnets separately. Magnets stored on metal shelves may move or jump when approaching, especially if the gap between the shelves is insufficient.

The biggest concern of Alnico magnets is their easy demagnetization. The use of cages can prevent this and keep them away from magnetically sensitive equipment or magnets made of other alloys.

Ceramic

Alnico magnet storage guidelines also apply to ceramic magnets-just keep them away from extreme low temperatures.

Flexible

First of all, it must be stored and used in a clean, dry and mild environment. Lay the flexible magnets flat to avoid curling, and make sure their magnetic surfaces do not face each other. If you wish to store them in rolls, keep one end on the end with the non-magnetic side facing outward. Always put them on the floor as they affect performance, so they may attract fine iron particles.

Rare earth: For rare earth magnets, corrosion and flux leakage are higher concerns. Keep them at low humidity and away from extreme high temperatures, and wrap smaller magnets with rust-proof paper (VCI). Keep them away from magnetic sensitive devices or magnets made of other alloys. Like Alnico and Ceramic magnets, if you use metal shelves for storage, make sure that the shelves are far enough apart to prevent the magnets from moving or jumping.

Mar cobalt (SmCo Magnet)

These are fragile magnets. If you put them on the floor, they are usually fine-just don't drop them off the roof of a ten-story building. Try to keep them away from salt water and acid. In addition, to store them responsibly, Sa cobalt magnets should last for decades.

Neodymium (NdFeB)

Like Sa cobalt magnets, neodymium is another very brittle permanent magnet. They are more susceptible to extreme temperatures and lose all magnetism above 320°C or below -196°C (77 Kelvin). Also keep them away from extreme heat, salt water and acid, and try to avoid even submersion of fresh water.

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