Neodymium Magnets - Powerful and Versatile

Neodymium magnets are the most powerful type of permanent magnets in the world. They have a high coercive force and are very strong, so they can be used to lift large weights, or to hold something very securely.

They are also incredibly versatile, and are used in many different applications. You'll find them in appliances, tools, electronics and more.

Reed switches - Neodymium magnets are used to activate reed switches in burglary alarms and other security systems. Reed switches consist of contacts that are encased in a sealed glass tube. These contacts are placed on ferrous reeds, and are activated by bringing the neodymium magnet close to them.

Metal separation - Filters, ionizers and other devices that filter out iron powder from oil and other fluids use neodymium magnets as well. Grease filters are often coated with neodymium magnets to help separate metal particles from the oil.

Point of sale displays - Most shops and restaurants use small neodymium magnets to hold up point of sale display advertising signs or stands. These magnets are extremely strong and hold the sign in place.

Magnetic tool belts - You'll find neodymium magnets in most magnetic tool belts. They hold the tools in place and prevent them from sliding off.

Door catches - Commercial and residential doors often have neodymium magnets on the latches. These magnets are incredibly strong and can be used to lift heavy items from the floor, or to pull the door closed.

Stu finders - These magnets are perfect for locating metal nails and other pieces in walls. They are also used in magnetic therapy, where they can be used as a healing tool for muscle pain.

They are very useful for recovering heavy ferrous items and are much more effective than other methods of retrieval, such as a hook. They can be hung on walls or even attached to steel ceilings.

Neodymium magnets can be made using two methods: sintered or bonded. Both methods use a powder-based neodymium alloy that is formed into dense blocks of magnet material by vacuum heating and then compacting.

The raw material can be a variety of rare earth metal powders, including neodymium, iron, and boron. The alloys can be refined to create a specific grade and particle size that is desired for the final magnet, based on a number of factors such as magnetic polarization, Curie point, coercivity, and flux density.

Bonded neodymium magnets are made by combining a powdered neodymium alloy with a polymer binder. The neodymium alloy is then pressed or extruded into a mold, and the polymer binder is inserted into the mold before being cooled. The finished magnet is shaped and orientated by an external magnetic field, and then fully compacted before being magnetized.

Though neodymium magnets have been used in the health sector in various diagnostic devices and as therapeutic tools, there are some potential dangers to the body, including the risk of injury. Some studies have found that neodymium magnets can cause inflammation in the body. They can also cause problems when used on the skin, such as rashes and itchiness.