The Installation Method Of The Motor Magnetic Steel Falling Off

The installation method of the motor magnetic steel falling off

Someone asked: The magnetic steel fell off and the rotation was not fast. After reinstalling, the electric car found that the speed was very slow and the overcurrent light was always on. What's the matter? Regarding a series of problems caused by the falling off of the electric vehicle motor magnet, the following are some problems and installation methods and skills compiled by our company about the falling off of the motor magnet. I hope it will be helpful to you!

This may be caused by you accidentally reversed the magnetic poles of the magnet when you installed the magnet, or it may be that the motor is rusted by water, and the rust is very easy to be magnetized and turned into a magnet. If the rust on the magnet in the motor is not cleaned, it will It causes the magnetic poles to interfere with each other, and the magnetic lines of force are confused, resulting in no force. Get better after rust removal!

 

What kind of glue is used for sticky magnetic steel? how to use?

AB glue can stick magnetic steel completely, but it is better to have no coating. If there is a coating, use sandpaper to polish the bonding surface, including the rotor of the motor, and then degrease the magnetic tile and the bonding surface to be bonded with carbon tetrachloride, dry it and mix it with glue.

 

If all the magnetic steel of the motor falls off, install the N pole or the S pole first?

There is no need to find the position of the first magnet, and in fact there is no first one. The order doesn't matter, it's for the convenience of installation, as long as the polarity of the two adjacent blocks is opposite.

 

Some netizens also added: There are strict requirements on the relative position of the magnets and carbon brushes of brushed motors, and the distance between the magnets should also be even. Otherwise it will affect the efficiency and commutation spark of the motor. Generally, the center line of the first magnetic steel should coincide with the center line of the two carbon brushes. As for whether it is N or S pole, there should be no problem. At most, it is enough to exchange the lead wires of the motor after reversing.

 

The N and S poles of the magnetic steel in the outer magnetic rotor are distributed alternately, and each of them is an arc-shaped sheet. You don’t need to distinguish anyway, you only need to distinguish the direction. According to the original mark, paste it flush with other magnetic steel , not protruding or misaligned, so as to ensure that the air gap and mechanical size of the motor are not affected.

 

Why does the magnet fall off? What are the reasons?
1. Overheating.
2. The stability of the process.
3. The glue is not good, maybe it is the glue quality problem.
4. The inlay is not firm.

 

The article about the installation method of motor magnet falling off was compiled and shared by Hongyu Magnetic Industry Manufacturer.