Everything You Need To Know About Neodymium Block Magnets

Permanent solid magnets consisting of an alloy of neodymium, iron, and boron are known as neodymium magnets (also known as “NdFeB,” “Neo,” or “NIB” magnets). They are members of the rare earth block magnets family and have any permanent magnetic characteristics. They are favoured by many consumer, commercial, industrial, and technical applications due to their high magnetic strength and cheap cost.

COMMONLY ASKED QUESTIONS

• Why do neodymium magnets have such a powerful magnetic field? 

Because of its high saturation magnetisation and resistance to demagnetisation, neodymium magnets are called strong. Strong neodymium magnets are more expensive than ceramic magnets, but they pack a tremendous punch! One of the most significant advantages is using a smaller NdFeB magnet to get the same result as a bigger, less costly magnet.

• What is the lifespan of neodymium magnets? 

Suppose their physical characteristics stay unchanged and they are not brought in contact with demagnetising forces. In that case, neodymium magnets will likely lose less than 1% of their flux density during ten years (such as high temperatures, opposing magnetic fields, radiation, etc.).

• What distinguishes neodymium magnets from other types of magnets? 

Neodymium magnets are less prone to cracking and chipping and are less expensive than rare earth block magnets such as samarium cobalt (“SmCo”). They are, however, more temperature-sensitive. Because its magnetic characteristics are incredibly stable at higher temperatures, SmCo may be a superior option for applications where this is important.

• What are some of the most frequent neodymium magnet applications? 

Neodymium magnets are commonly found in audio equipment (microphones, headphones, and loudspeakers), hard disc drives, pumps, bearings, MRI scanners, electric vehicles, wind generators, high-performance motors, actuators, magnetic therapy, anti-lock braking systems, levitation devices, door latches, model making, arts & crafts, home improvement (DIY-fixing furniture, hanging pictures, and more), POP displays, and more.

• When it comes to neodymium magnets, what are the optimum temperatures to use? 

Without careful magnetic circuit design, these magnets should not be used at temperatures over 130° C (240° F).

• Is it necessary to treat neodymium magnets? 

In humid circumstances, magnets that are not painted by a surface coating (such as plating) may rust.

• What are the most popular techniques for putting neodymium magnets together? 

“Super glues,” such as Loctite 325, are often used to combine neodymium magnets into goods. For the most remarkable results, make sure the bonding surfaces are clean and dry.

• What does permanent magnet mean in Physics? 

The bulk of magnetic materials accessible today are permanent magnets. Unlike electromagnets, permanent magnets are ferromagnetic materials with magnetic fields that do not switch on and off. Permanent magnets, including neodymium, alnico, ceramic (ferrite), and samarium cobalt, are available in a broad range of forms, sizes, and grades.

• What is the definition of a rare-earth magnet? 

Rare-earth magnets are the most powerful permanent magnets available today, producing magnetic fields that are considerably stronger than ceramic (ferrite) or alnico magnets. Rare-earth magnets come in two varieties: neodymium and samarium cobalt.

• What criteria are used to evaluate magnets? 

The maximum energy, residual product induction, and coercive force of magnets are considered while rating them. 

• What does it imply to have “approximate pull info”? 

The estimated pull information provided is for informational purposes only. These figures are based on the assumptions that the magnet will be connected to a 1/2″ thick mild steel plate that is level and ground. Coatings, corrosion, uneven surfaces, and some climatic conditions may decrease the draw force considerably. Please ensure that the natural pull is tested in your application.