What are the applications of electromagnets in our daily life?

What are the applications of electromagnets in our daily life?

Electromagnets are very many devices used in daily life. Many things need to be used in electromagnets, such as electromagnetic crane, maglev train and so on.
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The electromagnet can be divided into two types: direct current electromagnet and alternating current electromagnet.

If the electromagnet is divided according to its usage, it can be divided into five main categories:
(1) traction electromagnet is mainly used to drive mechanical devices, open or close various valves to carry out automatic control tasks.
(2) lifting electromagnet is used as lifting device to hoist ferromagnetic materials such as steel ingots, steel and iron sand.
(3) brake electromagnet is mainly used for braking the motor to achieve accurate parking.
(4) electromagnetic system of automatic electrical appliances, such as electromagnetic system of electromagnetic relay and contactor, electromagnetic release of automatic switch and operation electromagnet.
(5) electromagnets for other purposes, such as the electromagnetic sucker of the grinder and electromagnetic vibrator.