Multiple factors need to be taken into account when selecting a suitable demagnetizer. First, clarify the material properties of the workpiece to be demagnetized. Magnetic properties vary greatly among different materials; for instance, ferromagnetic materials and paramagnetic materials have different demagnetization requirements. Second, consider the size and shape of workpieces. Large workpieces may require a demagnetizer with higher power and magnetic field strength, while workpieces with complex shapes need a demagnetizer that can uniformly act on all sections.

The operating frequency of the demagnetizer is also a key factor. Higher frequencies are suitable for scenarios requiring fast demagnetization, yet they may raise equipment costs and energy consumption. Besides, the stability and reliability of the demagnetizer, as well as the manufacturer’s reputation and after-sales service, should be evaluated.

For actual selection, you may refer to the technical parameters and application cases provided by the manufacturer, or conduct sample tests to verify whether it meets demagnetization requirements. Meanwhile, balance all factors comprehensively according to your budget and production demands to pick the demagnetizer with the best cost performance.