How to control the product quality of NdFeB permanent magnet?
NdFeB permanent magnet is also called modern industrial monosodium glutamate. As a kind of 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, the surface coating.
First, magnetic energy
First, the key to the decision is the magnetic properties of the raw materials that control the production process.
1, raw material manufacturers according to business needs or medium or low grade sintered NdFeB, in raw materials to buy raw materials of the national standard, the company only sells high-grade NdFeB.
2. The advanced production technology also determines the performance and quality of the magnet.
3, quality control in the production process is important.
Two, magnet shape size and tolerance value
Use various shapes of NdFeB magnets, such as round, irregular, square, tile, trapezoid. Different sizes of materials are machined with different rough-cut materials by different machine tools. Advanced technology and machine operators determine the accuracy of the products.
Three, surface coating treatment
Surface coating quality, zinc, nickel, nickel copper nickel plating copper and gold plating process. Electroplating options can be carried out according to customer requirements. A brief summary of the quality of NdFeB products is to grasp the performance, size tolerance control, judge the appearance of coating detection and evaluation. Detection of magnetic flux Gaussian surface, such as testing; Dimensional tolerance, accuracy that can be measured with a vernier caliper; The coating, the color and brightness of the coating and the binding force of the coating, and can be observed through the appearance of the magnet surface smooth, whether there are spots, whether there are edge drop corners, to evaluate the quality of the product.