How to control the quality of ndfeb permanent magnet?

NdFeB permanent magnet is also called modern industrial mono-sodium glutamate. As an important high-performance magnetic material in modern industry, it promotes the progress of contemporary technological fields and society. It is widely used in various fields. Two, the size of the magnet; Three, surface coating.

One, Magnetic properties

1, raw material manufacturers according to business needs or medium-grade or low-grade sintered NdFeB, in the raw material purchase of raw materials of the national standards, the company only sells high-grade NdFeB . 2. The advanced production process also determines the performance quality of the magnet. 3. Quality control in the production process is very important.

Two, magnet shape size and tolerance value

The use of NdFeB magnets in various shapes, such as round, special-shaped, square, tile, trapezoid. Different sizes of materials are processed using different machine tools to cut rough materials, advanced technology and machine operators determine the accuracy of the product.

Three, surface coating treatment

Surface coating quality, zinc, nickel, nickel copper-nickel plating copper, and gold plating process. According to customer requirements for the product plating options work. The quality of NdFeB products, a summary, is to grasp the performance, size tolerance control, judging the appearance of the coating detection and evaluation. Test the Gaussian surface of the magnetic flux of the magnet, etc. Dimensional tolerance, the accuracy that can be measured with vernier calipers; The coating, the color and brightness of the coating and the binding force of the coating, and the surface of the magnet can be observed through the appearance, whether there are spots, whether there are edges and corners to evaluate the quality of the product.