Master Magnetics, Inc.

Alnico magnets, composed of aluminum, nickel, cobalt, copper, iron, and sometimes titanium, are highly sought after in various industries due to their unique properties. These powerful magnets can be produced through casting or sintering methods, each offering distinct characteristics.

In the casting process, the materials are melted and poured into a mold, then heat-treated and cooled. Depending on whether the magnet is heat-treated within a magnetic field, it can be oriented (anisotropic) or non-oriented (isotropic), affecting its gauss level. After heat treatment, the Alnico magnet is ground to specific tolerances and magnetized for use.

Sintered Alnico magnets, however, are created from a powdered mixture that is pressed into a die under high pressure and sintered in a hydrogen atmosphere. The cooling process, whether within or without a magnetic field, determines the magnet's anisotropic or isotropic nature. It's worth noting that Alnico materials typically meet or exceed the International Magnetics Association standards.

During the magnetizing process, Alnico magnets must be handled carefully due to their brittleness. They can easily chip or break if dropped on a hard surface. These magnets also have low resistance to demagnetization, necessitating proper storage with attracting poles or a steel keeper to maintain magnetization.

Master Magnetics, Inc. offers specific grinding and cutting services for machining Alnico, a material known for its hardness. Their expertise can help in selecting the best Alnico product for diverse applications. By partnering with trusted suppliers like Master Magnetics, Inc., industries can leverage the versatile and effective qualities of Alnico magnets for optimal performance and longevity. Contact them now.