Magnets made of different magnetic materials require different magnetization energy. Compared with ferrite magnets and sintered NdFeB magnets, bonded NdFeB magnets require higher magnetization energy to achieve saturation magnetization. If the applied magnetic field is lower than the saturation magnetization The required magnetic field will cause the unsaturated magnetization of the bonded NdFeB magnets.
The picture below shows the external magnetic field required for ferrite, bonded NdFeB, and sintered NdFeB to achieve saturation magnetization
What are the causes of unsaturated magnetized bonded NdFeB?
1. The current of the magnetizing system is insufficient
2. The magnetizer is not suitable
3. The magnetizing fixture is not suitable
What are the effects of unsaturated bonded neodymium magnets?
The possibility of magnet demagnetization increases, the no-load speed increases, the current increases, the stall torque decreases, the maximum output power decreases, and the efficiency decreases.
How can it be considered saturation magnetization?
A magnet is considered saturated when increasing magnetization energy fails to produce a significant change in magnet performance (usually less than 2%).
Note: The magnetization energy required for saturation magnetization bonded neodymium magnets is determined by the magnet size, density, material and required magnetization method.
More about bonded neodymium magnets;
This is a small size ring rare earth magnet, N38M grade, the outer diameter of the ring is 11mm, the hole is 2mm, which is also relatively small, the thickness is 5mm, the surface is plated with bright nickel, this type of magnet is suitable for passing through some thin shafts....
This is a very hot neodymium round magnet size, diameter 10mm, thickness 2mm, in many areas can be applied, the only difference is that different customers choose the coating, performance level and temperature resistance performance on the difference, the magnet weighs about 1.2g....
This product is a bowl-shaped magnet, because its shape is like the rice we eat. It is processed into a concave shape on the basis of a circular magnet, which belongs to the special-shaped magnet category. Our company is good at processing various complex special-shaped neodymium magnets. Welcome to all over the world. Customer service....
This is a ring magnet with an outside diameter of about 2 inches, belongs to medium size, made of rare earth neodymium material, the hole in the center is 40mm, thickness 5mm, the customer chooses N38 grade,...
Product is a Y30 (C8) grade round ferrite magnet, the N pole has a pit, the surface magnetic field strength is about 1300 Gauss, the specific size is 18mm in diameter, 8mm in thickness, magnetized in the thickness direction, and the tolerance is ±0.1mm....
You are now browsing this is a 4 inch ceramic ferrite ring magnet, by the courage magnet manufacturers physical samples photographed, magnetic ring outer diameter 110mm, hole 50mm, thickness 6mm....
You are now browsing this magnet is the diameter of 80mm series of round rare earth magnets, the thickness of 10mm, nickel-plated surface, the thickness of the magnetization....
We can provide various sizes of thin rectangular neodymium magnets, ultra-thin round magnets, ultra-thin square magnets, with high dimensional accuracy, stable performance is not easy to demagnetize, welcome to contact us for a quote....