Common testing items for sintered neodymium iron boron magnetic steel

Appearance size and physical performance testinghttp://www.magnet-forever.com

The appearance size and physical properties of neodymium iron boron products are the basic requirements for product use. Good products not only need to meet the requirements of magnetic properties, but also need to meet various sizes, coatings, mechanical properties, etc. that meet actual needs, in order to meet basic assembly and different environmental usage requirements.

The size and tolerance of the product not only affect the assembly effect, but also affect the consistency deviation of magnetic properties, the stability and energy consumption of motor operation, and have received increasing attention from customers in practical use.

Magnetic performance testing

The magnetic properties of neodymium iron boron are the main requirements for use, and only products that strictly meet the magnetic properties requirements can fully exert their effectiveness and be stably applied in the fields we need. This requires us to strictly test the magnetic performance indicators of neodymium iron boron.

In terms of magnetic properties, in the early days, everyone focused on the two indicators of remanence Br and intrinsic coercivity Hcj, but now, more and more users are paying attention to magnetic moment and thermal demagnetization. In fact, we use magnetic steel mainly for its two important characteristics: the magnetic energy density per unit volume and the magnetic stability during high-temperature operation. It is more reasonable to evaluate using magnetic moment and thermal demagnetization, and the magnetic steel selected by thermal demagnetization index will undoubtedly have better service reliability and higher cost-effectiveness.

Auxiliary testing items

The auxiliary testing items for neodymium iron boron are mainly used to verify whether the product performance meets expectations during the production process and to verify whether there are any defects in the production process; Analyze and confirm the composition and appearance of the product in case of abnormal situations or new product development.

We will provide in-depth introductions to the important testing items mentioned above, such as salt spray test, aging test, etc. Please stay tuned~