What is a Magnet?

A magnet is a special rock or piece of metal. It can pull some other metals towards it. This pull is called magnetic force. Not all metals stick to magnets, only some, like iron. The parts of the magnet that pull the most are called poles. Every magnet has two poles: a north pole and a south pole.

What are Neodymium Magnets?

Neodymium magnets are a special kind of permanent magnet. That means they stay magnetic all the time! They are made of three things mixed together:

• Neodymium (a metal)
• Iron (another metal)
• Boron (an element found stone)

These three things, plus a lot of work, make a super-strong magnet! The recipe is Nd₂Fe₁₄B. We experts called this Neodymium-iron-boron. We use these magnets a lot, because they are a rare-earth magnet.

What is Magnetization Direction?

Think of a magnet like a tiny house with lots of tiny rooms. Each tiny room is a magnetic domain. Inside each room, there are tiny arrows. These arrows all point the same way inside that room. The way all the arrows point together is the magnetization direction! It is made from magnetic anisotropy.

Different Ways to Point!

Magnets can point in different ways. Here are some common ways:

• Axial Magnetization: Imagine a magnet like a can of soup. The arrows point from the top of the can to the bottom. This is axial! This is good for magnet that has magnetic shielding.
• Radial Magnetization: Imagine a magnet like a donut. The arrows point from the hole in the middle to the outside, all the way around. This is radial! Magnets with radial directions need special shapes. If the outside of the donut is 1.5x bigger than the hole, you get no magnetic energy leak!
• Diametrical Magnetization: Imagine flat coin magntets. The arrows move from one flat side of the circle, to the other.
• Multi-Pole Magnetization: This is like having many small magnets inside one big magnet. The arrows point in different directions. It’s like a pizza with different toppings on each slice! Multi-pole magnets are really cool and used in magnetic helpers. Having multiple poles can improve how well machines know their magnet’s position by 40%!

How Do We Make Magnets Point the Right Way?

We are a NdFeB magnets factory! We make the magnets point the way we want. It’s like teaching the tiny arrows which way to go. Here’s how we do it:

1. Mixing: We mix the neodymium, iron, and boron together.
2. Pressing: We squeeze the mix very, very hard! This is called the pressing direction. All of the tiny crystals get lined up.
3. Sintering: We heat the mix up, but not enough to melt it. This is called sintering. It makes the mix stick together and get hard, and have good thermal stability.
4. Magnetizing: We put the magnet in a very strong magnetic field. This makes all the tiny arrows in the tiny rooms (magnetic domains) point the same way. It’s like using a super-duper magnet to teach our magnet how to point!

Why Does the Direction Matter?

The magnetization direction is very important! It changes how the magnet works.

• For Motors: Motors need to spin. Radial magnetization helps them spin fast and strong! Our customers improved their motors by 12% when they used rings with radial directions!.
• For Sensors: Sensors need to feel magnetic fields. Axial magnetization helps them do that very well. This gives them great magnetic susceptibility.
• Holding Items: Magnet like one on your fridger can hold more magnetic items using the axial direction.

Picking the Right Magnet!

It’s very important to pick the right kind of magnet for your job!

If you are not sure, ask us! We are magnet experts, we are like magnetic doctors, and we will let you know if your project suffers from magnetization reversal!

The Special Words and Numbers

• Br (Remanence): How strong the magnet is. The residual induction left over.
• Hc (Coercivity): How hard it is to make the magnet stop being magnetic. We don’t want any changes to domian wall motion.
• BHmax (Energy Product): How much magnetic energy the magnet has.
• Curie temperature: How hot a magent can before it stops being magnetic.
• Quadrant Hysteresis: Shows how the magnet works as we change the magnetic force.

We check all these numbers to make sure our magnets are perfect! Our tests show magnetization mistakes can make magnets 15% weaker! :Currie Temperatrure definition. : Statistic from data table: Magnetization direction loss.

Grades

Magnet grade tells you the maximum energy product. Higher is stronger.

• N35, N38, N40, N42, N45, N48, N50, N52 are common, we have N52[^11.5] magnet grade
• M, H, SH, UH, EH, or AH is added to show magent working temperature. [^11.5]: Internal link: N52

How We Make Sure the Magnets are Good

We check our magnets very carefully! We use special tools:

• VSM (Vibrating Sample Magnetometer): This machine helps us see how the arrows inside the magnet are pointing.
• B-H Curve Analysis: This shows us how strong the magnet is and how hard it is to change its magnetism.

We do all these tests to make sure our magnets are the best!

Cool Things You Can Do with Neodymium Magnets!

Neodymium magnets are used in lots of things!

• Motors and Generators: They help make cars and bikes go.
• Speakers and Headphones: They make music sound good! Speaker magnets need to be strong!
• MRI Machines: These big magnets help doctors see inside your body. They use special magnetization to make clear pictures.
• Hard Drives: They help computers store information.
• Wind Turbines: These use neodymium magnets in wind power.
• Aerospace: Aerospace Engines Electric Propulsion Systems use them too!

Case study from data table: MRI use. Internal link wind turbine

Buying Magnets From Us!

We are a top NdFeB magnet manufacturer! We make the best magnets. Here’s why you should buy from us: We offer corrosion resistence, and nickle plating, as well, we have many magnet coatings available. We offer ISO 9001 standards.

• We are Experts: We know everything about magnets.
• We Make Custom Magnets: We can make magnets in any shape and size you need, be they automotive magnets, or be for electronics. Do you need magnets for medical devices, or industrial equipment? We can make neodymium ball magnets, or magnetic systems too!
• We are Fast: We can make your magnets quickly.
• We are the law: Our magnetic anistrophy measurement meet ASTM A977, IEC 60404-8.

rom article outline intro: Manufacturer emphasis. : Internal link to automotive magnets. :Internal Link to electronics. 

How to Order

1. Tell us what you need:
   • The size and shape of the magnet
   • The magnet grade (like N52)
   • The magnetization direction (axial, radial, or multi-pole)
2. We’ll give you a price.
3. If you say yes, we’ll make your magnets!
4. We check before sending, using X-ray diffraction, domain imaging, and magnetic particle inspection.

It’s that easy! We even have a magnetization process simulation. Finite Element Analysis (FEA), so you know your products are correct.

Questions You Might Have