NdFeB, sometimes known as the magnet king, is the magnet with the highest commercial performance yet discovered. NdFeB magnets have extraordinarily strong magnetic characteristics, with a maximum magnetic energy product (BHmax) that is more than ten times that of ferrite. NdFeB magnets have excellent machinability. Its maximum operating temperature is 200 degrees Celsius. Because NdFeB has a firm texture, reliable performance, and is inexpensive, it is frequently employed. However, as a high chemical activity needed, NdFeB magnets must be surface treated. Here, we introduce 4 useful knowledge about NdFeB magnets.
What are the Features of NdFeB Magnets?
1. NdFeB permanent magnet material is an intermetallic compound Nd2Fe14B-based permanent magnet material.
2. NdFeB has a high energy density and a very high magnetic energy product and coercive force.
3. NdFeB magnet materials are commonly used in modern industry and electronics. Instrument miniaturization, weight reduction, and thinning, electroacoustic motors, magnetization, and other equipment.
How Do You Select the Best NdFeB Magnet?
1. Taking into account the working temperature
When selecting NdFeB magnets, customers should choose their own magnet grades based on their working temperature. If the operating temperature exceeds the withstand temperature of the magnet grade, the magnet will gradually demagnetize until no magnetism remains.
In terms of working temperature, the temperature selection correlates to different grades. Choose N within 80 degrees, M within 100 degrees, H within 120 degrees, SH within 150 degrees, UH within 180 degrees, and EH within 200 degrees.
2. Take into account the usage environment.
If the magnet device is sealed, you may want to select a magnet with no white zinc plating on the surface to save money.
If the magnet will be exposed to humid air, particularly salt spray, it is best to choose a magnet with nickel coating on the surface.
NdFeB magnets should be stored in a dry, temperature-controlled environment. Separate and wrap in plastic, wood chips, cardboard, foam, and other materials. Avoid iron and readily magnetized things such as monitors, bank cards, computers, TVs, mobile phones, and so on.
How Do NdFeB Magnets Get Separated?
When NdFeB magnets are attracted to one another and cannot be separated, it is best to push them horizontally and stagger them rather than pulling them firmly.
The particular stages are as follows: fix the entire magnet with the left hand, then move the magnet horizontally with the right hand's index finger and thumb.
Note: Do not immediately return the removed magnet to the magnet stack after removing it; instead, isolate the magnet. To be safe, handle with care and keep away from iron or magnetic items (approximately 16 cm) or wrap the removed magnet in paper.
How Should NdFeB Magnets Be Handled and Stored?
Because NdFeB strong magnetic materials are hard, brittle, and have strong magnetic fields, they should be handled with caution (particularly in large quantities and thin sheets). NdFeB is a hefty and brittle multi-metal alloy material having a density of around 7.45. To avoid magnetic shattering, use caution when handling it.
Take care not to impact when the strong NdFeB magnet attracts or separates from the strong magnet or other iron items. Otherwise, there is a risk of colliding and damaging the magnet or injuring the operator.
During storage, the atmosphere should be kept dry. Instead of placing the magnet directly on the ground, place it on a piece of thick cardboard or on a shelf.
