Designing Custom Magnetic Assemblies

Designing Custom Magnetic Assemblies

Blog Article

After sintering, the magnets are cooled and then machined into their final shapes and sizes. Machining might involve grinding, slicing, or cutting using diamond-coated tools since many magnetic materials are extremely hard and brittle. This step requires great care to avoid chipping or breaking the magnets. In many cases, CNC (Computer Numerical Control) machinery is used to ensure precision and uniformity, especially when tight tolerances are required.

Once the magnets are machined, they typically undergo a heat treatment or aging process. This step helps to stabilize the magnetic properties and improve resistance to temperature fluctuations and demagnetization. Some types of magnets also undergo an annealing process to reduce internal stress and further improve their magnetic performance.

One of the most critical steps in manufacturing magnets is the magnetization process. After shaping and stabilization, the magnets still do not have magnetic force. Magnetization is achieved by exposing the part to a very strong external magnetic field. This realigns the magnetic domains within the material, transforming it into a permanent magnet. The strength and direction of the magnetic field  Lift Magnets  are carefully controlled to achieve the desired magnetization pattern, whether it is axial, radial, or multi-pole.

After magnetization, magnets are tested and inspected to ensure they meet quality standards. Key properties that are evaluated include magnetic strength (measured in Gauss or Tesla), direction of magnetization, dimensional accuracy, and surface finish. Various instruments, such as Gaussmeters, pull testers, and coordinate measuring machines, are used during the quality control phase. High-performance magnets for critical applications like aerospace or medical equipment undergo even more rigorous testing, including thermal cycling and corrosion resistance analysis.