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Halbach Array Magnet

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Multipole Halbach Array Ring Magnet

Customized Halbach Array Ring Magnet
Customized Halbach Array Ring Magnet
Customized Halbach Array Ring Magnet
Customized Halbach Array Ring Magnet
Customized Halbach Array Ring Magnet

Multipole Halbach Array Ring Magnet

A Halbach Array is a special arrangement of permanent magnets that augments the
magnetic field on one side of the array while reducing the field to near zero on the other side. This was achieved by having a spatially rotating of magnetization.
  • Brand:

    KINGS MAGNET
  • Payment:

    100%/70%INVOICE
  • Product Origin:

    China
  • Shipping Port:

    Xiamen/Ningbo/Shanghai
  • Color:

    Black (usual) / Silver / Rare earth colors
  • Lead Time:

    25-30 days

Physical Properties:

 

No. Item Value
1 Density 7.3-7.7 g/cm³
2 Tensile strength 8 kg/mm2
3 Specific heat 0.12 k Cak (kg℃)
4 Modulus of elasticity 1.6x1011N/m2
5 Curie temperature 300-500℃
6 Resistivity 144 Ω.cm
7 Coefficient of thermal expansion 4 x 10-6 /℃
8 Stiffness 0.64 N/㎡
9 Hcj temperature coefficient -0.6 %/℃

 

What is a Halbach Array magnet?

 

A Halbach Array magnet is a specific configuration of permanent magnets that follows the principles of a Halbach array.The key feature of a Kings‘s Halbach Array magnet is the specific arrangement of magnets with alternating orientations. The magnets are positioned in such a way that their magnetic moments reinforce each other on one side and cancel each other out on the other side. This results in a focused and intensified magnetic field on the "active" side and a significantly weakened field on the "inactive" side.(as figure below)

Magnetic field diagrams of rectangular and ring array magnets

*Magnetic field diagrams of rectangular and ring array magnets

 

Machining Capability:

 

    We have professional team, advanced equipment and well-trained QC staff to develop different sizes and shapes magnets as customer requirements which can be ensured with very high quality and precise tolerance.Please see below dimensions of ring neodymium magnet:

OD(mm)

ID(mm) H(mm) Tol.(mm)
3-300 1-200 1-100 ±0.05 & ±0.1mm

 

 

Where are they actually used?

 

    Halbach Array magnets find applications in a variety of fields due to their unique magnetic properties. Some of the common areas where Halbach Arrays are used include:

  1. Electric Motors and Generators;
  2. Magnetic Levitation;
  3. Magnetic Resonance Imaging (MRI);
  4. Particle Accelerators;
  5. Linear Motors;
  6. Loudspeakers;
  7. Wind Turbines;
  8. Maglatch Systems;

These applications demonstrate the versatility of Halbach Arrays in providing efficient and focused magnetic fields, making them valuable in a wide range of engineering and scientific contexts.

 

Production process of NdFeB array magnet ring:

 

Raw Material Preparation→Powder Compaction→Sintering→Machining→Coating→Magnetization→Assembly into Arrays→Quality Control→Testing and Inspection

It's important to note that the production process can vary slightly depending on the specific requirements of the application and the manufacturer's processes.

* Kings warehouse

 

Customization Process:

 

    Below is a brief step-by-step guide to customizing magnets, more details will be confirmed during communication.

    We provide customization services. If you want to customize more complex magnets, please send us an email,thanks.

 

Certificate

Transportation

 

 

Why did you choose us?

 

1. We have ten years' experience in making magnets.

2. We are committed to the development and production of high-performance, high-precision and difficult products, in order to meet the requirements of motors, sensors and other products for magnets to work stably under complex conditions such as high temperature.

3. We work with a lot of companies like Schneider Electronics;Continental; Liebherr-CMCtec GmbH;DAC Electric B.V; Quadral GmbH & Co. KG;MEMSIC; TNE Korea Co., Ltd; HPV Technologies Inc; Dantax Radio AS; Audio Note UK LTD(in UK) ; Stage Accompany; Audeze; Jahwa Electronics etc.

 

FAQ

 

Q1. Why is the price of sample higher than that of batch?

A: For samples we don't have any profit. We only charge the cost of materials and labor. As a manufacturer, the more quantity produced, the lower the unit cost.

 

Q2. Why I should pay the Magnetic inspection fee? What is Magnetic inspection fee?

A: The freight is only paid by us to the transportation company for you, and the magnetic inspection fee is also a necessary cost generated in the process of transportation. 

Freight companies require magnetic inspection reports when transporting magnets.Magnetic inspection report is a report provided by a professional magnetic inspection agency after testing that the magnet meets the transportation standards.

 

Q3.Why do I get magnets that break so easily?

A: Magnets are designed to be brittle and fragile. Remove the metal from the working area before using the magnet. Keep the distance between the magnets when using them at the same time. Even small magnets attracted to each other can break with such force.

 

Q4. Do you support exchange and return service?If I buy a magnet and I can't use it.

A: We do not support return or exchange service. As you know, the magnet is a custom product, which is completely customized according to your requirements. This product cannot be resold to others.

 

Q5. What will you do if there is a quality problem? 

 

A: If you have any problem after receiving the magnet, please contact us immediately and shoot a video to us. We make records and take pictures of all the details when we ship. If it's our fault, we'll take the blame. If it happened in transit, we are not responsible for it. 

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