Sintered NdFeB permanent magnet materials are widely used in various fields because of their excellent magnetic properties and cost performance
1.Audio equipment such as microphones, pickups, headphones and speakers.
Permanent magnets are used in speakers with current-carrying coils that convert electrical energy into mechanical energy that moves the speaker cone, which in turn changes the pressure of the surrounding air to produce sound. The microphone works in reverse; the diaphragm is connected to a coil located inside a permanent magnet, and when sound moves the diaphragm, the coil also moves. As the coil moves through a magnetic field created by a permanent magnet, an electrical signal is produced that has the original sound signature.
2.Dentures
Tiny neodymium magnets can be used as attachments in orthodontic appliances, or to hold together dentures that are missing a few teeth. Because of their strength, even tiny neodymium magnets work, and they are more resistant to corrosion when coated.
3.Door lock
Neodymium magnets are used in public, commercial and residential buildings to make magnetic door locks. A countersunk magnet or pot magnet embedded in the door surface is used to attract another wall magnet or steel disc. The strong neodymium magnets easily hold the weight of the door and the leverage provided by the door means the magnets come apart with ease.
4.jewelry
Small magnets are used in making jewelry and making jewelry clasps. Counterbore neodymium magnets have opposite poles on the counterbore face to provide a secure hold and since neodymium is the strongest magnetic material in the world, magnets as small as 5mm in diameter can be effective.
5.Crafts and Model Making
Neodymium magnets are very popular among craft enthusiasts and model makers. Because they are so powerful, even small magnets can generate enough magnetic force to be effective. They're magnets of choice for everyone, from miniature war game enthusiasts who use them to configure models used in games like Warhammer, to those who make handmade stationery and cards.
6.post-press processing
Small neodymium magnets are widely used in the finishing industry because a magnet is thin enough to attract another magnet even if both are hidden under a layer of card, paper or plastic. Magnets are used as concealed closures for brochures, binders, boxes, menus, and high-end packaging. Usually, a pair of magnets are used, but the same effect can be achieved with a single magnet and a steel disc.
7.DIY/Home Improvement
The uses for neodymium magnets in the home are endless; creating door and drawer closures, hanging pictures, and securing furniture are just a few of them.
8.Recycle
Recycling heavy iron items requires heavy magnets. Large neodymium magnets are just the ticket for this type of mission, and are more cost-effective than other recovery or retrieval methods. Magnets for recovery and retrieval are capable of lifting up to 150kg.
9.Hanging artwork
Hanging artwork using magnets is a very popular solution, whether for professional galleries and exhibitions or housewives. The ability of the small neodymium magnets to support considerable weight, even in the sheer position, means that even large works of art can be swapped out and replaced quickly.
10.Point of sale display
You may not realize you're surrounded by neodymium magnets every time you enter a store or restaurant, but they're there. That's because many small point-of-sale display advertising signs and stands are held together using small, strong neodymium magnets, or are suspended from steel ceilings using neodymium hook magnets.
11.MRI scanner
An MRI scanner generates a large magnetic field that aligns the protons in the body with the direction of the magnetic field. Radiofrequency waves are then directed at the body, producing detailed internal images. Many "open" MRI machines used in hospitals use large neodymium magnets, and they really help save lives.
12.Magnetic therapy
Although not clinically proven, many believe that magnets can relieve pain by exposing certain parts of the body to the magnetic field created by a permanent magnet. Because of their strength, neodymium magnets are a popular choice among magnetic therapy believers.
13.Reed switch
A reed switch is a switch that is operated by a magnetic field. Reed switches consist of contacts placed on iron reeds, enclosed in a hermetically sealed glass tube. They can be designed to default on or off in the absence of a magnetic field and are activated by bringing a neodymium magnet close to the switch. A typical use of a reed switch is to detect the opening and closing of a door in a burglar alarm system.
14.Motors and Generators
Electric motors rely on a combination of electromagnets and permanent magnets (usually neodymium magnets) to convert electrical energy into mechanical energy. Generators do the opposite, converting mechanical energy into electrical energy by moving a conductor through a magnetic field.
15.Bearings
Magnetic bearings use the concept of magnetic levitation to support moving parts without physical contact. They are used to achieve relative motion with very low friction and without mechanical wear even at incredible speeds. Bearings called passive magnetic bearings use permanent magnets, such as neodymium magnets, while active magnetic bearings use electromagnets.
16.ABS (anti-lock braking) system sensor
Passive ABS sensors use neodymium magnets wrapped in copper coils. The sensor is placed close to the ABS magneto resistive ring, and when the ring is rotated, a voltage is induced in the copper wire. This signal is monitored by the vehicle's computer system and used to define the wheel speed.
17.Suspension device
Commercially, electromagnets are used in levitation applications such as maglev transportation. However, the availability and price of small, powerful neodymium magnets means that you can experiment with magnetic levitation yourself at home. The trick to diamagnetic levitation also requires diamagnetic materials, such as pyrolytic graphite.
18.Hoisting machinery
Permanent magnets are essential in heavy engineering and manufacturing for lifting large ferrous items. Switchable release magnets that use super strong neodymium magnets are often used since they come with a quick release switching mechanism.
19.Magnetic separator
Most processing facilities will use some form of magnetic separation system to remove contaminating ferrous and paramagnetic items from the production or processing line. This is usually done using a conveyor system and powerful filter rod magnets.
Magnetically coupled pumps consist of a motor-driven shaft with a ring of powerful magnets attached to it, and a smaller ring of magnets attached to another shaft that connects to the impeller inside the larger ring of magnets. When the motor turns the drive shaft and one set of magnets, the resulting magnetic field turns another set of magnets, which powers the impeller. With this type of motor, there is no mechanical contact between the motor and the impeller. Magnetically coupled or magnetic impeller pumps have two main advantages over non-magnetic pumps. Since the impeller is only magnetically connected to the drive magnet and shaft, if the impeller becomes blocked and stops turning, the motor can keep turning without burning out, avoiding any lasting damage to the motor. The second is relevant for applications where liquids may seep into the motor unit (e.g.pond motors), since with magnetically coupled motors, you can completely separate the motor unit from the impeller, which is usually inside a sealed housing.