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AlNiCo Bar Magnet Description

The Alnico bar magnet is a rectangular AlNiCo magnet composed of aluminum-nickel-cobalt with excellent temperature stability and high residual inductance. The bar magnet has two poles, a north pole and a south pole so that the magnet aligns when hanging freely so that the north pole points to the magnetic north pole of the earth.

AlNiCo Bar Magnet Application

Alnico bar magnet is used in mining, plastic, ceramic, electric power, chemical, rubber, pharmaceutical, food, environmental protection, Remove impurities, purify liquid. Various structures can be chosen, and the size and number can be made to your needs.

Stanford Magnets specializes in manufacturing and supplying AlNiCo magnets applied in various industrial applications. We have advanced technology, rich experience, and professional engineering technicians in this field. If you require a specific size, please contact us for a quote.

FAQ

What are Alnico bar magnets made of?

Alnico bar magnets are made from an alloy of Aluminum (Al), Nickel (Ni), Cobalt (Co), and often include Copper (Cu) and sometimes Titanium (Ti). The specific composition can vary depending on the desired magnetic and physical properties.

Why are Alnico bar magnets preferred in certain applications?

Alnico bar magnets are preferred for their excellent thermal stability, high temperature resistance (up to 540°C or 1000°F), and resistance to corrosion. These properties make them ideal for applications in electric motors, sensors, and musical instruments like guitar pickups, where performance in varying environmental conditions is crucial.

Can Alnico bar magnets lose their magnetism?

While Alnico magnets have good resistance to demagnetization, they can lose their magnetism if exposed to strong demagnetizing fields or heated above their maximum operating temperature. However, under normal conditions, they maintain their magnetism over long periods.

How are Alnico bar magnets magnetized?

Alnico bar magnets are usually magnetized after manufacturing due to their high coercivity. This process requires a strong direct current (DC) magnetic field, which aligns the magnetic domains in the alloy to produce a permanent magnet.

Are Alnico bar magnets strong compared to other types of magnets?

Alnico magnets have strong magnetic fields but are generally not as strong as rare-earth magnets like neodymium. However, their strength is sufficient for many applications, especially where high temperature stability is required.

How do I handle and store Alnico bar magnets safely?

Alnico magnets should be handled carefully to avoid chipping or breaking due to their brittleness. When storing them, keep them away from electronic devices and magnetic media to prevent damage. It's also advisable to store them with keepers (iron or steel plates) to help maintain their magnetic strength.

Can Alnico bar magnets be cut or drilled?

No, Alnico magnets are hard and brittle, making them unsuitable for cutting or drilling as they could easily chip or break. Any shaping or machining should be done before the final magnetization process.

How do I identify the poles of an Alnico bar magnet?

The poles of an Alnico bar magnet are located at the two ends of the bar. If the poles are not marked, you can use a compass or another magnet to identify them: opposite poles will attract, while the same poles will repel each other.

Are there different types of Alnico magnets?

Yes, Alnico magnets come in various grades, each with specific magnetic and physical properties. These grades are determined by the alloy composition and the manufacturing process (casting or sintering).

Can Alnico bar magnets be remagnetized?

Yes, if an Alnico magnet loses its magnetism or needs to be reoriented, it can be remagnetized using a strong magnetic field. This process should ideally be done by professionals to ensure the magnet is restored to its full magnetic potential.

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AlNiCo Bar Magnet Description

AlNiCo Bar Magnet Application

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