The Difference of electromagnet and Magnet

Let's talk about the electromagnet first. There is a energized solenoid with an iron core inside the electromagnet. When the iron core is inserted into the energized solenoid, the iron core is magnetized by the magnetic field of the energized solenoid, and the iron core becomes magnetized after collision. Became a magnet. It is the process of converting electrical energy into magnetic energy, and then converting collision energy into kinetic energy (electric energy, collision energy, and kinetic energy). Therefore, the electrical energy design process involves voltage, current, resistance, and power, while the impact energy design process involves magnetic induction intensity, magnetic flux, etc.

Let's take a look at magnets again. Let's take permanent magnets as an example. They can be natural products or artificially made. The strongest magnet is iron tide. Iron has a wide hysteresis loop, high top force, and high magnetism. After magnetization, Materials that maintain constant magnetism. Also known as permanent magnet material and hard material. In application, the permanent magnet works in the deep magnetic bubble and the second quadrant demagnetization part of the magnetic loop after magnetization. The permanent magnet should have the highest possible coercive force Hc, remanence Br and maximum magnetic energy product (BH)m to ensure maximum storage of magnetic energy and stable magnetism.

What are the differences between electromagnets and magnets?

1. An electromagnet needs to be energized to be magnetic. However, after a magnet is magnetized, it usually remains there without being energized.

2. The magnetic force of the electromagnet can be changed, which is related to the number of turns of the coil and the current intensity, but the magnetic force of the magnet cannot be changed.

3. The magnetic poles of the electromagnet can be changed, which is determined by the positive and negative poles of the electricity and the winding direction of the wire black, while the magnetic poles of the permanent magnet are fixed and do not bend.