Alnico magnets are a type of permanent magnet made from an alloy of aluminum, nickel, and cobalt . Cast alnico magnets are produced by pouring a molten alloy of the composite metals into a mold and then further processing it through various heat-treat cycles .
Cast alnico magnets are known for their high magnetic strength, excellent temperature stability, and good corrosion resistance. They are also cost-effective for both low and high volume production runs .
Here are some of the properties of cast alnico magnets:
Magnetic Strength: Medium .
Curie Temperature: 1472°F (800°C) .
Max Operating Temperature: 1022°F (550°C) .
Corrosion Resistance: Good .
Cost: Low .
Cast alnico magnets are used in a variety of applications, including electric motors, generators, loudspeakers, and sensors .
In terms of manufacturing, cast alnico magnets are produced by pouring a molten alloy of the composite metals into a mold and then further processing it through various heat-treat cycles . The resulting magnet has a dark gray exterior and may have a rough surface. Further treatment, such as machining (grinding), can be used to smoothen the surface of the magnets produced .
Cast alnico magnets are cost-effective for both low and high volume production runs . They are also known for their high magnetic strength, excellent temperature stability, and good corrosion resistance . These properties make them ideal for use in a variety of applications, including electric motors, generators, loudspeakers, and sensors .