Typer af magneter: Udforskning af magneter og magnetisme

Hvad er en magnet?

A Magnet is something that pulls some metals. This pull is called magnetisme. It’s like a magic trick, but it’s science! Magnets have a magnetfelt. You can’t see it. But it’s there! The magnetfelt has lines. These are magnetiske feltlinjer.

Magnets have two ends. They are called Stænger. One is the Nordpolen. The other is the Sydpolen. North and south like each other. They pull. North and north push away. So do south and south.

 Typer af magneter

There are many kinds of magnets. These are the main ones.

• Permanente magneter: These are always magnets.
• Midlertidige magneter: These are magnets only sometimes.
• Elektromagneter: These use power to be magnets.
• Ferrit-magneter
• NdFeB-magneter
• Alnico-magneter

2.1 Permanent Magnets

These magnets are always “on.” They don’t stop being magnets. There are a few main types.

Neodymium (NdFeB) Magnets

Dette er de stærkeste magnets. We make these! They are used in many things.

• Biler: Elektriske biler use them. They help the wheels go!
• Vindkraft: Vindmøller use them. They make power from the wind. We make great magnets.
• Opbevaring af data. Hard disk drives (HDD) need magnets to work.
• NdFeB-magneter bruges i magnetisk resonans.
• Telefoner: They are in your phone.

NdFeB-magneter are the best! For very strong magnets, look at our Tilpassede NdFeB-magneter.

We like NdFeB a lot. We are good at making them. We even make Magnetisk belægning to make them last longer!

Samarium-kobolt (SmCo)-magneter

Disse er stærk. They can get very varm.

• Fly: They are used in planes.

Ferrite/Ceramic Magnets

These are not as stærk. But they are cheap.

• Højttalere: They are in many højttalere.
• These magnets use magnetic stripes (cards).
• Fridges: They stick to your fridge.
• MRI-maskiner.
• Legetøj: You probably have them.

Alnico-magneter

These are old. But they are good with varme.

• Guitar-pickupper
• Sensorer
• Music: They are used in some music things.

2.2 Temporary Magnets

Disse Magneter are not always “on.” They only pull when something else is there. Like a metal that gets pulled.

2.3 Electromagnets

Disse Magneter use power. You can turn them on and off.

• Big Cranes: They lift heavy things.
• MRI: They help doctors see inside you.

Sådan vælger du den rigtige magnet

3.1. Magnetic resonance angiography

It helps to know about magnet therapy. Here are the simple facts you need.

• Koercivitet (Hc): How hard is it to stop being a magnet?
• Temperaturstabilitet: Can it work when hot or cold?

• Energy product (BHmax: Hvordan stærk is it?

  Magnetisk permeabilitet is imporatn.

  3.2 What Do You Need?

• Biler: Elektriske biler need strong magnets. NdFeB er godt.

• Medicinsk: MRI needs big magnets.
• Legetøj: Small, fleksible magneter er gode.
• Magnetic flux leakage should be low.

Need help? Ask us! We can help you pick. Contact our engineers . We love to help!

Hvorfor NdFeB-magneter er de bedste

NdFeB-magneter are great! Here’s why.

• Super stærk: De er de stærkeste.
• Lille: They can be very small. But still stærk.
• magnetisk resonansis used for many things.
• Former: We can make them in many shapes. Like blocks. Or discs.
• Magnetic damping is important for a smooth operation.
• Belægning: We can coat them. This stops rust. Learn about Magnetisk kvalitet to make them easy to use.
• They show magnetoresistance
• De bruges i magnetic switches.

We made some NdFeB-magneter that help, Vindmøller make more power!

Step-by-step instructions: How to buy ndfeb magnets

• Pick Specs.
• Ask for samples.
• Order lots.
• Magnetic circuit is a closed path.

5.1. Buying Magnets: A Guide

Step by step process to help you buy.

• Find right size.
• Find right grade. *Pick a good coatign. ###5.2 Why Pick Us?
• God: We make good magnets.
• Hjælp: We can help you.
• Hurtig: We ship fast. *We sell good grade magnets.

Få en quote! Or see our NdFeB book!

You Ask, We Answer