Halback Array Magnets

1.Why choice us for Halback Array magnets?

1.1 Rich experience in designing and manufacturing large magnetic components since 2003;

1.2 Large size, integrated design, pay attention to details;

1.3 High vacuum, material, coating, assembly, step-by-step approach

1.4 Many successful design cases in practice;

1.5 Provide magnetic circuit simulation;

2. Actual successful cases:

2.1 1.1T(11000Gs) Halback Array magnet

Dimension: Inner Hole diameter 48mm,

Height:340mm

2.2  4000Gs Halback Array magnet

Hole diameter :200mm

Height: 180mm

2.3 1.54T Halback Array magnet

According to customer requirements, the entire set of components is designed and manufactured by us. After actual measurement, the parallel magnetic field in space reaches 1.54T (15400Gs)

2.4 Halback array magnets for magnetron sputtering, electron bombardment of target material

2.5 Halbach Array Magnets for focusing charged particles, with the magnetic field parallel to the axis, instead of solenoid design.

2.5 Halbach Array Magnets with magnetic field perpendicular to axis - multipole

Hole diameter 84mm，Height 234mm

3. What is Halbach Aarray Magnets?

HalbachArray is a super strong magnet structure, designed to produce the strongest magnetic field with the least number of magnets.

Halbacharray is a magnetic assembly structure and an engineering magnetic field that approximates an ideal structure. The arrangement of permanent magnets in different magnetization directions significantly enhances the magnetic field on one side of the array, while significantly weakening the magnetic field on the other side. The purpose is to generate the strongest magnetic field in the working area with the least amount of magnetic field.

In the case of the same volume, especially when the magnetization direction of the magnet is 4-16mm thick, the strong side surface magnetic field strength of the Black Baker array magnet is about twice (or 1.4 times) that of a regular single magnet.

4. Halbach Array Application

Mainly used in high-energy physics fields such as particle accelerators, free electron laser devices, synchrotron radiation devices, etc. Due to its excellent magnetic field distribution characteristics, its application fields have gradually expanded to industrial fields such as nuclear magnetic resonance, magnetic levitation, and permanent magnet special motors

5. Advantages of circular Halback array magnets;

Combining the radial and parallel arrangement of magnets, if the end effect is ignored and the permeability of the surrounding magnetic materials is considered infinite, the above permanent magnet structure will ultimately form a single-sided magnetic field, which is a significant feature of Halbach I. This characteristic indicates that Halbach magnets have good application value in linear motors. Compared with traditional motors, Halbach motors have the following advantages.

5.1. Power density

Compared with the traditional permanent magnet motor architecture, the superposition of parallel and radial magnetic fields after Halbach magnetic ring decomposition greatly increases the magnetic field strength on the other side, effectively reducing the size of the motor and improving its power density.

5.2. The fixed rotor no longer requires inclined slots

In traditional permanent magnet motors, due to the inevitable harmonics in the air gap magnetic field, inclined slots are usually used in the stator rotor architecture to reduce their impact. In Halbach motors, due to the large sinusoidal distribution of the air gap magnetic field and low harmonic content, there are no skewed slots in the stator and rotor.

5.3. The rotor can be made of non-iron core materials;

Due to the self-shielding effect of Halbach magnets, the unilateral magnetic field distribution no longer requires the rotor to use magnetic materials to provide a path, which not only provides more materials for rotor selection, but also makes the system have lower rotational inertia and faster adhesion.

5.4. High utilization rate of magnets;

Due to the partition of Halbach magnets, their working point is relatively high, generally exceeding 0.9, thereby improving the utilization rate of the magnets.

5.5. Centralized winding can be used;

Distributed windings are commonly used in traditional permanent magnet motors to reduce harmonic magnetomotive forces. In Halbach motors, due to their high sinusoidal magnetic field distribution and low harmonic magnetic field effects, centralized windings can be used.

5.6. Using Halbach motor magnet arrangement can reduce the torque ripple of the motor, thus greatly reducing the demand for motor bearings.

About Us

Mag-spring was established in 2003 and is located in Ningbo, Zhejiang Province, China. It is a comprehensive manufacturer of magnetic application products, specializing in the research, design and production of magnetic filters and various magnetic application components.

The company has a group of professional technicians and production equipment, operates strictly in accordance with the ISO9001 quality system, and continuously strengthens internal management. While the company is constantly developing, it pays attention to environmental protection. It is an ISO14001 certified enterprise, and the company's products meet the requirements of the EU ROHS directive.

Based on the enterprise tenet of "efficiency, perfection, harmony and dedication" and the enterprise slogan of "everything we handle must be excellent", with many years of experience in research, design, manufacturing and sales in the field of magnetic products, the company's products have been recognized by many customers at home and abroad. We will sincerely look forward to cooperating with you with high-quality products, preferential prices and the best services.