Ndfeb magnets belong to the third generation of rare earth materials, which are the strongest magnetic permanent magnet materials in the field of rare earth permanent magnet materials, and are also one of the indispensable key components of industrial manufacturing today. The excellent performance of neodymium magnets can accelerate the pace of the industrial field, so the control of NdFeb magnets product quality is one thing that all sintered neodymium manufacturers must master.

The quality of sintered Ndfeb final products is mainly reflected in the following three aspects:

1. Magnet performance

Sintered neodymium raw materials are the most basic prerequisite to ensure the quality of finished products, we must first consider whether the raw materials of neodymium magnets meet national standards, raw material manufacturers will prepare different grades of sintered neodymium raw materials in advance according to the project needs.The next is the magnet manufacturer's production technology level, and finally look at the quality control in the production process.

2. The shape, size and tolerance of the magnet

Neodymium magnets are more common shapes are round, cylindrical, square bar, tile, shaped, usually difficult to produce a molding, need to go through multiple processing processes, different shapes of magnets used by the processing equipment is also different. At this time, it is time to test the processing strength of sintered NdFeb manufacturers, and the shape, tolerance and size of good neodymium magnets will eventually be within the needs of customers.

Rectangular neodymium magnet with double countersunk holes；

3. Sintered neodymium magnet surface coating

Sintered neodymium magnet because of its easy corrosion, to be processed by electroplating process, usually the quality of NdFeb magnet coating is directly related to its long service life. Common magnet coatings are galvanized, nickel, nickel copper nickel, gold, epoxy and other ways. We generally according to the grasp of the plating process time, after the plating process to confirm the good coating thickness, coating color and brightness and coating adhesion, and can observe the appearance of the magnet surface smooth, no spots, no corners, and then to evaluate the overall product quality of the magnet.

The above is the method controlling the mass of strong magnets, if you have any other requirment, please contact us online!

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