자석의 종류: 자석과 자성 탐구하기

자석이란 무엇인가요?

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

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

 자석의 종류

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

• 영구 자석: These are always magnets.
• 임시 자석: These are magnets only sometimes.
• 전자석: These use power to be magnets.
• 페라이트 자석
• NdFeB 자석
• 알니코 자석

2.1 Permanent Magnets

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

Neodymium (NdFeB) Magnets

다음은 가장 강한 magnets. We make these! They are used in many things.

• 자동차: 전기 자동차 use them. They help the wheels go!
• 풍력 발전: 풍력 터빈 use them. They make power from the wind. We make great magnets.
• 데이터 스토리지. Hard disk drives (HDD) need magnets to work.
• NdFeB 자석 은 다음에서 사용됩니다. 자기 공명.
• 전화: They are in your phone.

NdFeB 자석 are the best! For very strong magnets, look at our 맞춤형 NdFeB 자석.

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

사마륨 코발트(SmCo) 자석

다음은 다음과 같습니다. 강한. They can get very hot.

• 비행기: They are used in planes.

Ferrite/Ceramic Magnets

These are not as 강한. But they are cheap.

• 스피커: They are in many 스피커.
• These magnets use magnetic stripes (cards).
• Fridges: They stick to your fridge.
• MRI 기계.
• 장난감: You probably have them.

알니코 자석

These are old. But they are good with 열.

• 기타 픽업
• 센서
• Music: They are used in some music things.

2.2 Temporary Magnets

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

2.3 Electromagnets

이러한 자석 use power. You can turn them on and off.

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

올바른 자석 고르는 방법

3.1. Magnetic resonance angiography

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

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

• Energy product (BHmax: 방법 강한 is it?

  자기 투과성 is imporatn.

  3.2 What Do You Need?

• 자동차: 전기 자동차 need strong magnets. NdFeB 가 좋습니다.

• 의료: MRI needs big magnets.
• 장난감: Small, 유연한 자석 가 좋습니다.
• Magnetic flux leakage should be low.

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

NdFeB 자석이 최고인 이유

NdFeB 자석 are great! Here’s why.

• 초강력: 그들은 가장 강한.
• Small: They can be very small. But still 강한.
• 자기 공명is used for many things.
• 도형: We can make them in many shapes. Like blocks. Or discs.
• Magnetic damping is important for a smooth operation.
• 코팅: We can coat them. This stops rust. Learn about 자석 등급 to make them easy to use.
• They show magnetoresistance
• 다음에서 사용됩니다. magnetic switches.

We made some NdFeB 자석 that help, 풍력 터빈 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?
• Good: We make good magnets.
• 도움말: We can help you.
• 빠른: We ship fast. *We sell good grade magnets.

받기 quote! Or see our NdFeB book!

You Ask, We Answer