How big is the working magnetic field of the electromagnet

How big is the working magnetic field of the electromagnet? This mainly depends on our actual needs. The working magnetic field of the electromagnet is related to multiple factors: the area of the magnetic pole, the working air gap, the excitation coil, the excitation current, the magnetic yoke, the magnetic saturation strength of the magnetic head material, etc. It is no problem for general materials to achieve 2T. If the current is increased, the pole column is increased, the pole face is reduced, and the working distance of the magnetic pole is reduced, the magnetic field can be 2.6-2.8T. If a better material is used, the magnetic field can be To achieve more than 3T, but the cost of such a large magnetic field electromagnet is very high, and the cost performance is not good. Therefore, it is recommended that the magnetic field of the electromagnet is recommended to be below 3T.