Resources Products

Criteria for Judging the Quality of NdFeB Magnet

There are more and more manufacturers of neodymium pot magnets. How to judge the quality of sintered NdFeB magnets from the perspective of customers?

Ⅰ. How to judge the quality of the NdFeB magnet?

Judgment method 1: consider the performance of the NdFeB magnet

To ensure the magnetic performance of the sintered NdFeB magnet, it is necessary to control the production process of raw materials, manufacturing requirements of neodymium pot magnet factory, production technology and magnetic field orientation.

The raw materials shall be selected according to the raw material composition specified in the national standards, and the requirements for manufacturing high-grade, medium-grade or low-grade sintered neodymium pot magnets shall be met. The advanced technology of sintered neodymium pot magnets determines the performance and quality of magnets. The NdFeB magnet produced by the most advanced technology has relatively high performance.

Judgment method 2: consider the magnetic field orientation of the NdFeB magnet

In terms of magnetic field orientation, China is the only country in the world that adopts two-step pressing. It is one of the most important characteristics of China's Sintered NdFeB magnet industry that the orientation is formed by low pressure vertical molding and finally by quasi isostatic pressing.

Judgment method 3: observe from the production process of the NdFeB magnet

In the production process, monitoring is also very important. It can be controlled by means of SC sheet thickness measurement and JM powder particle size distribution.

Ⅱ. How to judge the performance of NdFeB magnet products

We can use some measuring instruments to show customers that the products meet the requirements of national standards. At the same time, customers can also select the brand they need according to the NdFeB magnet parameters like Br, Hcb, Hcj and (BH)max, and select the products that meet their requirements according to their needs.

Secondly, the quality of the sintered powerful NdFeB magnet can be determined according to the magnet size. Its shape is made according to its different applications. The production process also goes through many steps. The surface of the high-quality NdFeB magnet should be smooth and reach a certain precision.

Therefore, whether it is qualified or not depends not only on the performance requirements, but also on the control of dimensional tolerance. The guarantee of size directly depends on the processing strength of the factory.

Today, Ningbo Beilun Meank Magnetics Co., Ltd. has dozens of advanced magnetic components related to parts processing equipment and machined magnet components, which have expanded from the original traditional steel cup (tank) magnets to rubber and plastic coated suction magnets and installation magnets. The company has also trained a number of professional magnet assembly and testing personnel. The magnets produced are fine in workmanship and the qualified rate is much higher than that of other manufacturers. If you have any needs, please feel free to consult us.

Related Article


Please fill the form to let us know your need. Our sales will get in touch with you ASAP.

Related Products