Language
Views: 0 Author: Site Editor Publish Time: 2026-01-19 Origin: Site
How are permanent magnets made? The process starts with picking the right materials. Then, the steps are compression, sintering, machining, and magnetization. Each step helps make the magnet strong and dependable. The table below shows how each step changes quality and performance:
| Step | Impact on Quality and Performance |
|---|---|
| Material Selection | Picks how strong and tough the magnet will be |
| Compression | Makes sure the magnet is even and has good traits |
| Sintering | Joins the particles and keeps magnetic traits |
| Machining | Keeps the magnet in good shape |
| Magnetization | Gives the magnet its lasting magnetic power |
| Stabilization | Makes the magnet work better for its use |
TAIXIONG is special in making magnets because they use new ideas and work fast.
Permanent magnets are made by picking materials, pressing them, heating them, shaping them, and making them magnetic.
Neodymium magnets are very strong. They are used in small gadgets. They need a cover to stop rust.
Each magnet type has special traits. Ferrite magnets cost less and can handle heat.
TAIXIONG makes sure magnets are good by using new machines and careful tests.
Magnets help many businesses. They are in electric cars, wind turbines, and medical tools.
Image Source: unsplash
Neodymium ndfeb magnets are the strongest permanent magnets today. They are made from neodymium, iron, and boron. This mix gives ndfeb permanent magnets very strong magnetic energy. These magnets can hold heavy things even though they are small. That is why they are great for small devices that need strong magnets. Many companies use ndfeb permanent magnets in electric motors, sensors, and speakers. If these magnets get wet, they can lose their strength. So, manufacturers put a special coating on them to protect them. TAIXIONG uses advanced technology to make neodymium ndfeb magnets. They make sure every ndfeb permanent magnet is high quality.
There are different types of permanent magnets. Each type has its own special features. The table below shows the main types and what makes them different:
| Type of Magnet | Distinguishing Properties |
|---|---|
| Ferrite Permanent Magnets | Affordable, high-temperature resistant, stable magnetic performance, available in various shapes and sizes. |
| Rare-Earth Permanent Magnets | Strongest type, high field strength (>1.4 Tesla), stable in temperature, corrosion resistant. |
| Neodymium-Iron-Boron | Highest magnetic energy, very strong, suitable for small sizes, but susceptible to corrosion. |
| Samarium-Cobalt | High temperature resistance (up to 350°C), stable and reliable, suitable for demanding applications. |
| Iron-Nitrogen and Iron-Carbon | Experimental magnets, potential superconductors, still under research for practical use. |
Samarium-cobalt magnets are part of the rare earth group. They work well in hot and tough places. Ferrite magnets are cheaper and can handle heat, so people use them for many things. Alnico magnets stay stable and can take high heat. This makes them good for sensors and tools.
Permanent magnets are important in many industries. Neodymium ndfeb magnets are used in electric cars, wind turbines, and medical machines. Ndfeb permanent magnets also help robots and automatic machines work. Rare earth magnets, like ndfeb and samarium-cobalt, are needed for high-tech jobs that need strong magnets. Ferrite and alnico magnets are used in home appliances and factory machines. TAIXIONG gives many kinds of magnets to car makers, electronics, food factories, and recycling companies. Their skill makes sure every magnet is safe and works well for new technology.
Image Source: unsplash
Making neodymium iron boron magnets starts with picking the right materials. The main parts are neodymium, iron, and boron. Workers measure these parts very carefully. This makes a strong magnetic alloy. Neodymium comes from rare earth minerals. Iron is taken from very pure iron ore. Boron comes from ferroboron or is made from boric acid and boric oxide. The purity of these materials is very important. If the materials are very pure, the magnets stay strong and stable. Even a little bit of dirt can make the magnet weaker. Sometimes, workers add small amounts of dysprosium, niobium, aluminum, or copper. These help the magnet work better in heat and give other good traits.
TAIXIONG always uses the best rare earth materials for making neodymium iron boron magnets. The company checks every batch with special tests to make sure it is pure. This helps TAIXIONG make magnets that are safe and work well for many uses.
The next step is to mix the raw materials in the right amounts. The usual mix for neodymium iron boron magnets is:
| Main Elements within NdFeB | Percentage by weight |
|---|---|
| Neodymium (Nd) | 29% - 32% |
| Iron (Fe) | 64.2% – 68.5% |
| Boron (B) | 1.0% - 1.2% |
| Aluminium (Al) | 0.2% - 0.4% |
| Niobium (Nb) | 0.5% -1% |
| Dysprosium (Dy) | 0.8% -1.2% |
Workers put these parts together in a vacuum induction furnace. They melt the mix and pour it into molds to make ingots. This keeps the magnetic power strong and the alloy clean. TAIXIONG uses new melting and casting ways to control heat and mixing. This makes sure the magnets are strong and work well. The company’s new ideas and focus on quality help it lead the rare earth magnet business.
Permanent magnet production starts by turning alloy ingots into fine powders. This step is very important because it affects how the magnet will work in the end. There are different ways to break down the alloy and get it ready for shaping:
Comminution: Workers use hydrogen decrepitation to make tiny cracks in the alloy. This makes the material easy to break into pieces.
Milling: Hammer mills smash the alloy into smaller bits. Jet milling then makes the powder even finer and keeps the particle sizes close together.
Powder Alignment: The powder is pressed while a magnetic field is used. This lines up the particles and helps the magnet work better.
The way the powder is made changes how good the final magnet is. Smaller powder pieces help the sintering process work better. This makes the magnets denser and stronger. Finer powders also help the particles line up and have fewer rough spots. These things are needed for strong magnets that work well.
Hydrogen decrepitation makes a powder that is easy to crush and not magnetic. This helps jet milling work faster. But, hydrogen can make the material break easily. Jet milling is good for making fine powders that are all the same size. This is important for strong magnets. Using special gas during jet milling stops the powder from rusting and saves energy.
TAIXIONG uses new machines to make powder. Their workers check every step to make sure the powder is the right size and shape. This careful work helps TAIXIONG make magnets that are high quality.
After making the powder, the next step is shaping the magnet. Pressing and molding decide how packed and lined up the magnet parts are. Different ways of pressing and molding have their own good points:
| Technique | Description | Impact on Magnetic Properties |
|---|---|---|
| Mechanical Pressing Densification | Pushing rare earth magnet powders together with high pressure | Makes the magnet very dense and packs the particles well |
| Hot Pressing and Sintering | Using heat and pressure to press powder materials | Makes magnets that are dense and have better magnetic power |
Workers often line up the particles inside a mold or die when the powder is still. In some ways, like powder extrusion molding, the powder lines up as it moves through a magnetic field. Outside magnetic fields can turn and line up the particles as the powder is pushed out, which makes the magnet work better.
TAIXIONG’s way of making magnets uses careful pressing and molding. Their engineers use strong magnetic fields when shaping the magnets. This makes sure each magnet is lined up and packed as well as possible. The result is a magnet that is strong and works well.
Note: The steps in powder processing and shaping are very important for how permanent magnets work. TAIXIONG is very good at these steps, which makes them special in the magnet business.
Sintering is a very important step for ndfeb permanent magnets. Workers heat the shaped powder until it is almost melting. This step is called sintering. The heat makes the powder stick together and become solid. Sintering also gets rid of gases and makes the magnet strong.
To make strong permanent magnets, workers heat the blanks below the melting point. This is called sintering or heat treatment.
Sintering needs careful control. Oxygen can hurt the magnet’s power. Less oxygen helps make better ndfeb magnets.
Most studies show that less oxygen makes magnets stronger. Keeping oxygen low helps use the best alloys. This gives more magnetic phase and higher BHmax.
Heat treatment after sintering changes the inside of the magnet. The temperature and time change how the magnet works. The table below shows how different heat levels change the magnet:
| Heat Treatment Temperature (°C) | Remanence (Br) (T) | Coercivity (Hci) (kA/m) | Microstructure Observations |
|---|---|---|---|
| 580 | 0.68 | 1027 | Continuous grain boundaries |
| 680 | 0.75 | 844 | Discontinuous grain boundaries |
| 980 | N/A | 15 | Significant phase degradation |
TAIXIONG uses special sintering controls to make sure every ndfeb magnet is dense and strong. Their methods keep oxygen low and help make better rare earth magnets.
After sintering, magnets are hard and easy to break. Workers use machines to cut and shape the ndfeb magnets. Machining must be exact because small mistakes can change the magnet’s power. TAIXIONG uses careful tools and checks every magnet for size and shape.
Next is surface coating. Sintered ndfeb magnets can rust if not protected. Coatings help keep magnets safe and last longer. The coating depends on where the magnet will be used. The table below shows coating types and their features:
| Protection Technique | Corrosion Resistance | Cost | Production Complexity | Performance Characteristics | Applicable Scenario |
|---|---|---|---|---|---|
| Zinc Coating | Medium | Low | Low | Medium corrosion resistant, less costly | Protection for shorter time period |
| Organic Coating | High | Medium | Medium | Good for complex shapes, protects from chemicals | Chemical and high humidity conditions |
| Nickel Copper-Nickel plating | High | Medium | Medium | Excellent corrosion resistance, widely used | Suitable for humid condition |
| Chemical plating (Ni-P alloy) | Very high | Medium | High | High corrosion resistance, for severe conditions | Marine applications (highly corrosive) |
| Water encapsulation | Very high | Medium to high | Medium to high | Best for underwater and outdoor use | Long-term moisture exposure |
| Parylene coating | Very high | High | High | Best for sensitive and high corrosion resistance needs | Electronics and medical |
Picking the right coating is very important. It helps the magnet last longer and work better. Things to think about are humidity, heat, and if the magnet will be used in water.
TAIXIONG puts coatings like nickel-copper-nickel and organic layers on ndfeb magnets. These coatings stop rust and help magnets work in tough places. Their team checks every batch for coating thickness and finish.
The last step is magnetization. Sintered ndfeb magnets are not strong until this step. Workers put the magnets in a strong magnetic field. This lines up the inside parts of the magnet. The magnet gets its lasting power.
| Key Procedure/Factor | Description |
|---|---|
| Manufacturing Process | The way the magnet is made changes its magnetic power. |
| Magnetic Field Heat Treatment | Using a magnetic field during heat treatment makes the magnet stronger and gives direction. |
| Temperature Management | Heating to the right temperature for the right time stops loss of power. |
TAIXIONG uses special magnetization machines to make sure every ndfeb magnet is strong. Their engineers control the field and temperature for best results. They test each magnet for strength and direction.
TAIXIONG’s team checks every step: sintering, machining, coating, and magnetization. They watch temperature, pressure, and other things during sintering to get the right density and power. They use tools to check sizes. They test magnetic strength with special meters. They look for surface problems and finish. They test at each stage to make sure the magnets are good. If a magnet does not pass, it is recycled.
TAIXIONG’s focus on quality and special methods helps them make reliable ndfeb magnets for many uses. Their rare earth magnets help run motors, sensors, and other devices that need strong magnets.
TAIXIONG checks quality at every step of making magnets. The team looks at each ndfeb magnet’s size, shape, and how smooth it is. They use special tools to test how strong the magnet is and which way it points. Workers search for problems like cracks, seams, laps, holes, extra stuff inside, cold shuts, and rust on the surface. These checks make sure every magnet is made well and meets tough rules.
TAIXIONG uses a full quality system to control how things are made. The company checks raw materials, watches the whole process, and follows ISO9001, SGS, and RoHS rules. Each magnet gets a certificate before it is sent out. Magnetic flux reports and demagnetization curves can be given if needed. The table below shows how TAIXIONG’s quality checks match up with world standards:
| Quality Control Aspect | Description |
|---|---|
| Comprehensive Quality Management System | TAIXIONG has established a comprehensive quality management system. |
| Raw Material Control | Strict control of the quality of raw materials is implemented. |
| Production Process Control | Quality of production processes is strictly monitored. |
| Compliance with Standards | TAIXIONG magnets meet ISO9001, SGS, and RoHS standards for safety and environmental compliance. |
Before shipping, TAIXIONG gets magnetic test reports from outside labs. This makes sure every permanent magnet follows world rules.
TAIXIONG packs magnets carefully to keep them safe when shipped. Workers use non-magnetic stuff and thick foam to keep magnets apart. They put magnets in metal boxes with shields to stop magnetic fields from leaking out. Foam and strong cardboard boxes stop the magnets from moving or breaking.
The team checks each box for field leaks using a magnetometer or compass. Boxes get clear labels like "Magnetized Material" to warn people. For air shipping, the magnetic field must be less than 5.25 milligauss at 15 feet away. Steel-lined boxes help keep the field low and safe. TAIXIONG follows all air and sea shipping rules for dangerous goods.
TAIXIONG’s careful packing and shipping keeps ndfeb magnets safe and makes sure they arrive in great shape.
The way permanent magnets are made has many important steps. Each step helps the magnet work well and last longer:
Picking the right raw materials makes the magnet strong.
Powder metallurgy makes the magnet’s inside stronger.
Compaction lines up the particles for better magnet power.
Sintering and finishing fix problems and help the magnet last.
Magnetization makes sure the magnet works every time.
TAIXIONG is a leader because they use new technology and have top quality. Their magnets are used in many fields and always meet tough rules. Companies know TAIXIONG gives good magnets that work well.
Neodymium magnets are made from neodymium, iron, and boron. This mix gives them a very strong magnetic field. TAIXIONG’s engineers make sure the magnets are packed tightly. They also line up the parts inside the magnet. These steps help small magnets hold heavy things.
TAIXIONG checks each magnet for size, shape, and strength. Workers use special tools to look for cracks or rust. The company follows strict rules like ISO9001 and RoHS. Every magnet is tested before it is shipped. This helps TAIXIONG send out magnets people can trust.
Magnets can rust or get weak if they get wet. Coatings protect the outside of the magnet. This helps magnets last longer. TAIXIONG uses nickel, zinc, or organic coatings. The coating depends on where the magnet will be used. Coatings keep magnets safe in hard places.
Permanent magnets are used in motors, sensors, speakers, and medical tools. Factories use them in machines and robots. TAIXIONG gives magnets to car makers, electronics, and food factories. These magnets help many businesses work safely and well.
Magnets can get weaker if they get too hot, hit hard, or get wet. TAIXIONG uses special materials and coatings to protect them. If you handle and store magnets right, they stay strong for a long time.
