1. Features & Processing of Ferrite Magnets
Features: Primary materials include BaFe₁₂O₁₉ and SrFe₁₂O₁₉. Manufactured via ceramic processes, they are hard and brittle. With excellent temperature resistance, low cost, and moderate performance, they are the most widely used permanent magnets.
Properties: High magnetic performance, good time stability, and low temperature coefficient.
Applications: Electricity meters, instruments, motors, automation control, microwave devices, radar, and medical equipment.
Magnetization Direction: Axial, radial, or customized.
Shapes: Cylinders, rings, rectangles, blocks, arcs, and segments.
2. Features & Processing of AlNiCo Magnets
Features: Alloys of aluminum, nickel, cobalt, iron, and trace metals. Casting allows diverse sizes and shapes with good machinability. They exhibit the lowest reversible temperature coefficient and withstand temperatures above 600°C.
Classification: Cast or sintered AlNiCo.
Applications: Automotive components, instruments, audio devices, motors, education, and aerospace/military fields. Cast AlNiCo offers low temperature sensitivity, high heat/ moisture resistance, and stability. Sintered AlNiCo (via powder metallurgy) suits complex, thin, or small parts, used in instruments, communication systems, switches, and sensors.
Shapes: Cylinders, rings, rectangles, blocks, arcs, and U-shapes.
3. Features & Processing of Samarium Cobalt (SmCo) Magnets
Features: Composed of samarium, cobalt, and rare-earth metals. Alloys are smelted, crushed, pressed, and sintered. They offer high magnetic energy product and ultra-low temperature coefficient, operating up to 350°C (unlimited negative temperatures). Above 180°C, they outperform NdFeB in magnetic stability and chemical resistance. Highly corrosion- and oxidation-resistant.
Applications: Aerospace, defense, microwave devices, communications, medical equipment, sensors, magnetic drives, and motors.
Production Flow: Batching → smelting → powder milling → pressing → sintering → aging → testing → grinding → machining → finished products.
Shapes: Discs, rings, squares, blocks, arcs, and custom designs.
4. Orientation Direction of Magnets
Sintered NdFeB magnets are anisotropic. The orientation direction (also "orientation axis" or "easy magnetization axis") is the direction where optimal magnetic properties are achieved.
5. How to Determine Magnetization Direction
Use magnetic pole detection film. The film contains iron powder sealed in transparent layers. When placed near a magnet, the powder aligns toward magnetic poles, revealing the polarity distribution.
Why Choose Jiuju Automation?
With years of expertise, Jiuju Automation produces high-efficiency, stable, and ultra-safe magnetizers—the top choice for magnetization equipment buyers.
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