What is an Electromagnetic ?
An electromagnet is a device that works on the principle of electromagnet and consists of an iron core, a copper coil and a round metal disk. When current passes through the copper coil, the magnetic field generated will make the iron core a temporary magnet, which in turn attracts nearby metal objects. The function of the round disk is to enhance the suction force, because the magnetic field on the round disk and the magnetic field generated by the iron core will be superimposed to form a stronger magnetic force. This device has a stronger adsorption force than ordinary magnets and is widely used in industries, family life and scientific research.
These kind of electromagnet are portable, cost-effective, and efficient solutions to easily lift items such as steel plates, metallic plates, sheets, coils, tubes, disks, etc. It is usually consists of rare earth metals and alloys (e.g. ferrite) that make it capable of producing a stronger magnetic field. Its magnetic field is not consistent as it can switched on or off based on the particular needs.
Working principle:
The working principle of the suction cup electromagnet is based on the interaction between the magnetic field generated by electromagnetic induction and the metal object. When current passes through the copper coil, a magnetic field is generated, which is transmitted to the disk through the iron core to form a magnetic field environment. If a metal object nearby enters this magnetic field environment, the metal object will be adsorbed to the disk under the action of magnetic force. The size of the adsorption force depends on the strength of the current and the size of the magnetic field, which is why the suction cup electromagnet can adjust the adsorption force as needed.