Alnico Magnets Production Flow Diagram
There are two standard ways in which Alnico magnets are produced. The two different types of Alnico magnets are cast magnets and sintered magnets.
The casting process allows for complex shapes to be made more easily than the sintered process which most magnets are produced from.
Alnico magnets are available as either isotropic or anisotropic versions. An isotropic Alnico magnet can be magnetised in any direction or directions. Whereas an anisotropic Alnico magnet can only be magnetised in one direction which is determined by the axis of the structure of the magnet. Anisotropic Alnico magnets are generally more powerful than isotropic Alnicos.
During the production process heat is applied in both types of magnets. As with all magnets a magnetic field is applied to the magnet. The remanence or memory of this field is what imbues that magnet with its magnetic power. Magnets are indeed the production of a ferromagnetic material which serves as a storage device for magnet strength.
Our standard range of Alnico magnets is limited to just a few shapes however these come in a number of dimension options. Alnico magnets have become less popular due to the rise in availability of Neodymium magnets. Although Alnico magnets are stronger than Ferrite magnets they are certainly no match for the magnetic strength of powerful rare earth magnets. That said, Alnico magnets are relatively low cost in comparison. They are also very well suited to high temperatures and can operate inside machines and hot oils without losing their magnetic power.
Alnico magnets are traditionally painted red and red horseshoe magnets are the quintessential symbol of magnetism. Recognised internationally as such they represent most people’s first hands on experience with magnetism. Used in the classroom, Alnico horseshoe magnets are a favorite for teachers looking to demonstrate magnetism to students. Alnico magnets also come in other shapes such as block magnets, cylinder magnets or pot magnets.