China NdFeB Square Magnet Manufacturers, Suppliers and Factory - Customized Service

Your Professional NdFeB Square Magnet Supplier

DongGuan Golds-magnets Technology Co., Ltd. was established in 2012, is a professional manufacturer of NdFeB permanent magnets, high temperature resistant SmCo magnets and customized magnets. The products are widely used in information technology, automotive industry, machinery manufacturing, aerospace, electromechanical systems, medical equipment and other fields. Our goal is to be your truly reliable partner of magnet assembly in China. With professional customization service, competitive price, quality assured products, we are a good choice as your one-stop partner for long-term business.

Why choose us

Strict quality control process
We have our own production plant and adhere to the highest quality control process in the industry to ensure that every link from raw material procurement to product manufacturing is strictly tested and inspected. We are committed to providing customers with neodymium magnet products that meet expectations and requirements.

Testing equipment
Our factory is equipped with a variety of advanced reliability testing equipment, such as salt spray chambers, constant temperature and humidity chambers, high temperature testing machines, magnetic property analyzers, two-dimensional projectors, as well as comprehensive methods such as drop tests and pull tests to meet various product testing requirements.

Our certifications
Dongguan Golds-magnets Technology Co., Ltd has proudly achieved ISO9001 and ISO 14001 certifications, showcasing its dedication to maintaining the highest standards of quality and environmental management.

Cost saving & fast delivery
Owning 3 subsidiaries for raw materials, finish processing and magnets production, we ensure you low cost and short lead time.

Smartwatch Magnet
Material: Neodymium Magnet. Material Grade: N35 - N52. Application: Smartwatch Accessories. Specification: (can be customized). Coating: Ni. Tolerance: ±0.05mm. Working temperature: ~80℃. Place of Origin: Guangdong, China. Package: Lined
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Magnetic Belt for Watch
Material: Neodymium Magnet. Material Grade: N35 - N52. Application: Smartwatch Belt Accessories. Specification: (can be customized). Coating: Ni. Tolerance: ±0.05mm. Working temperature: ~80℃. Place of Origin: Guangdong, China. Package:
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Versatilen Magnetic Toy
Material: Neodymium Magnet. Material Grade: N35 - N52. Application: Smartwatch Belt Accessories. Specification: (can be customized). Coating: Ni. Tolerance: ±0.05mm. Working temperature: ~80℃. Place of Origin: Guangdong, China. Package:
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Bluetooth Earbuds Magnet
Material: Neodymium. Material Grade: N35 - N52. Application: Bluetooth Earbuds, Magnetic Charging Compartments. Specification: (can be customized). Coating: Zn. Tolerance: (Tolerances can be customized). Working Temperature: ~80℃. Place of
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Electromagnetic Relay NdFeB Magnets
Material: NdFeB Magnet. Material Grade: Industrial Grade (Meets National Quality Standards). Application: Electromagnetic Relays, Industrial Applications. Specification: (can be customized). Coating: Ni. Tolerance: (Tolerances can be
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Square Magnets with Hole
Material: NdFeB Magnet. Material Grade: (can be customized). Application: Appearance Decoration, Industrial Applications. Specification: Square shape with hole, customizable diameter. Coating: Ni or Zn (customizable for aesthetic
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Advantages of NdFeB Square Magnet

01/

High magnetic properties
NdFeB square magnets have a very high magnetic energy product and coercivity, which means they can provide a more powerful magnetic field, so they perform well in applications that require a high magnetic field.

02/

Excellent corrosion resistance
Due to the use of special anti-corrosion coating on the surface of NdFeB square magnets, its corrosion resistance is very good and can be used in many corrosive environments.

03/

High temperature resistance
NdFeB square magnets have a high Curie temperature and can be used in high temperature environments, which is very beneficial for some applications that need to operate in high temperature environments.

04/

Easy to process
NdFeB square magnets are easy to process and manufacture, and can be made into magnets of various shapes and sizes, suitable for different application fields.

05/

Environmental protection
NdFeB square magnets do not contain harmful substances, are environmentally friendly, and meet environmental protection requirements.

06/

High cost performance
Compared with other permanent magnet materials, the price of NdFeB square magnets is relatively low, so it is more competitive in the field that requires a large number of magnets.

Applications of NdFeB Square Magnet

Electronics
NdFeB square magnet material is required for mobile phone vibration motors, permanent magnet motors, and speakers. It is widely used as a core material for motors, generators, rotors, sensors and other components in electronic devices because of its unique magnetic properties.

Electrical machinery
In generators and motors, the strong magnetic force of NdFeB square magnets increases the efficiency and power density of the motor.

Medical equipment
In medical devices, NdFeB square magnets are used in high-precision medical equipment such as mri equipment to improve the accuracy and stability of the equipment.

Toys and models
The strong magnetic force and stability of NdFeB square magnets make them widely used in toys and models, such as magnetic levitation trains and magnetic puzzles.

Packaging and hardware machinery
In packaging and hardware machinery, NdFeB square magnets can be used to attract and handle ferromagnetic substances, improving productivity and precision.

Aerospace
In the field of aerospace and aviation, NdFeB square magnets can be used in the manufacture of motors and sensors and other components of satellites, aircraft, missiles and other equipment to improve the reliability and performance of the equipment.

Our NdFeB Square Magnet Grades

The temperature rating for Neodymium is merely a guide value. It is the physical size and shape of the NdFeB square magnet and the total magnetic circuit that actually determines how well a magnet will perform at a raised temperature. For example, a NdFeB square magnet in free space will demagnetise at a lower temperature than the same sized NdFeB square magnet connected to a piece of mild steel. It will also demagnetise at a lower temperature than a NdFeB square magnet of twice the length in the direction of magnetisation. The Intrinsic curve shape also plays a part in the temperature performance of NdFeB.

The total magnetic circuit that the Neodymium magnet is in determines its working point on the Intrinsic curve. By having a higher working point (e.g. magnet connected to mild steel or a longer magnet) the magnet will cope with a higher temperature before it will show signs of demagnetisation (when the working point passes the ‘knee’ of the Intrinsic curve). The situation is made more unclear if an external demagnetising field is present as this may mean the Neodymium magnet may demagnetise at even lower temperatures.

Therefore, it is quickly apparent that the total magnetic circuit, the total environment and the application as a whole must all be reviewed to determine whether a Neodymium magnet will still perform at a satisfactory level towards the recommended maximum working temperature as indicated by the letter(s) in its NdFeB square magnet grade classification. For example, a magnet rated for a recommended maximum working temperature of 150 degrees C, may start to demagnetise significantly at 100 degrees C if the design is poor, or a magnet rated for a recommended maximum working temperature of 80 degrees C may start to demagnetise significantly at 100 degrees C if the design is really good.

Manufacturing Process of Customized NdFeB Square Magnet

The manufacturing process of customized square strong magnets begins with the selection of raw materials. These materials are sourced from reliable suppliers, ensuring consistency and quality throughout the production process.

Material preparation
The first step in the manufacturing process is material preparation. This involves melting and refining the raw magnetic materials to achieve the desired composition. The molten material is then cooled and shaped into ingots, which will later be transformed into the final magnet shape.

Pressing and sintering
Once the material has been prepared, it moves on to the pressing and sintering stage. In this step, the material is pressed into the desired square shape using specialized machinery. The pressed material is then sintered, a process that involves heating the pressed material to a high temperature to increase its density and magnetic properties.

Grinding and polishing
After sintering, the square magnets undergo grinding and polishing to achieve the required dimensions and surface finish. This step is crucial for ensuring that the magnets meet the precise specifications set by our clients. The grinding process removes any excess material, while polishing gives the magnets a smooth and uniform surface.

Cladding and coating
Customized square strong magnets can be clad with various materials such as zinc (zn), nickel (ni), nickel-copper-nickel (nicuni), or black epoxy. This cladding process not only enhances the aesthetic appeal of the magnets but also provides additional protection against corrosion and wear. We offers a range of cladding options to suit different application requirements.

Magnetization
The final step in the manufacturing process is magnetization. This is where the square magnets are given their magnetic properties. Magnetization is a critical process that determines the strength and polarity of the magnets. At dongguan golds-magnets, we use advanced magnetization techniques to ensure that each magnet exhibits the desired magnetic characteristics.

Packaging & Shipping of NdFeB Square Magnet

Delivery time: Generally 1-2 workdays for NdFeB square magnet stocked items. If not stocked, it is according to quantity. We service orders for a quick turnaround to keep just-in-time delivery. We work with your sourcing team to obtain forecasts and safety stock levels.

We provide safe and timely shipping by air and by sea. Professional goods shipping forwarder. Tracking information is available.Your appointed forwarder is also welcome.

Certificate

FAQ

Q: What is information we need before quotation for NdFeB square magnet?

A: Before our quotation, usually we need the following information. The grade of NdFeB square magnet and size and coating requirement.

Q: How to make NdFeB square magnets stronger?

A: To re-magnetize a weak magnet, you can use a permanent magnet or an electromagnet. Hold the weakened magnet close to the stronger magnet and slowly move it along the length, ensuring the poles are properly aligned.

Q: Can I cut, drill, or machine NdFeB square magnets?

A: Machining magnets can be a tricky process and we do not recommend it unless there is no other option. NdFeB square magnets are very hard and brittle and any kind of machining can break or damage the magnet. Heat produced by machining can quickly demagnetize the magnet.

Q: Why are NdFeB square magnet magnets coated?

A: NdFeB square magnets are coated to prevent oxidation and rust. NdFeB square magnets are made of neodymium, iron and boron. The iron will oxidize quickly and will rust over time, the coating protects the magnet from this.

Q: What is the difference between NdFeB square magnet and SmCo magnets?

A: NdFeB square magnets are known for their strong magnetic force, while SmCo magnets have high temperature stability and corrosion resistance.

We're professional ndfeb square magnet manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy customized ndfeb square magnet at competitive price from our factory.

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