Alnico ring magnets
Alnico ring magnets are made from an alloy of aluminum, nickel, cobalt, and iron, known for their excellent thermal resistance and robust magnetic stability. These magnets can handle temperatures up to 550 degrees Celsius and are highly resistant to demagnetization. Shaped in a ring, they are commonly used in applications where a central void is necessary for mechanical or functional reasons, such as in loudspeakers, sensors, and various types of scientific instrumentation.
The ring shape allows for a focused magnetic field along the central axis, providing uniform magnetic performance essential for precision devices. Alnico ring magnets are typically manufactured through a sintering process, which gives them precise dimensional control and a smooth finish, although they can also be made via casting for larger sizes and custom shapes.
Their unique combination of durability, temperature stability, and consistent magnetic output under varying environmental conditions makes alnico ring magnets ideal for applications requiring reliable performance over a wide range of temperatures. Their traditional utility in both industrial and consumer products continues to make them a valuable component in various technological applications.