How to control the product quality of NdFeB permanent magnets

- Aug 09, 2018 -

NdFeB permanent magnets, also known as modern industrial MSG, as a high-performance magnetic material important in modern industry, promote the progress of contemporary technology and society, widely used in various fields, how to judge the most comprehensive advantages of permanent magnet products: Can; Second, the size of the magnet; three, the surface coating.

First, the magnetic properties First, the key to the decision is to control the magnetic properties of the raw materials in the production process.

1, raw material producers according to business needs or medium or low grade sintered NdFeB, the national standard for the purchase of raw materials in raw materials, the company only sells high-grade NdFeB.

2, the advanced nature of the production process also determines the performance quality of the magnet.

3. Quality monitoring during production is very important.

Second, the shape and tolerance of the magnet

Various shapes of neodymium iron boron magnets, such as circular, shaped, square, tile-shaped, trapezoidal. Different sizes of materials are machined from different machine tools to cut rough materials. Advanced technology and machine operators determine the accuracy of the product.

Third, the surface coating treatment

The plating quality of the surface plating, zinc, nickel, nickel, copper and nickel plating copper and gold plating process. The product can be electroplated as required by the customer. The short and good summary of the quality of NdFeB products is to grasp the performance, control the dimensional tolerance, judge the appearance of the coating and evaluate the Gaussian surface of the magnet flux, and so on. The dimensional tolerance can be measured with a vernier caliper. Accuracy; coating, coating color and brightness and coating adhesion, and can observe the surface of the magnet by appearance, with or without spots, with or without falling corners to evaluate the quality of the product.

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