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What are the detection methods of NdFeB magnets?

2020-05-13 16:48:29

Neodymium magnet, also known as neodymium iron boron magnet, is a tetragonal crystal formed by neodymium, iron and boron (Nd2Fe14B). The detection of NdFeB magnet usually uses micrometer, vernier caliper, Gauss meter, fluxmeter, film thickness meter and other measuring tools. The film thickness meter mainly measures the thickness of the plating layer of the finished NdFeB magnet. Using the film thickness meter can effectively monitor the quality of the plating, and the magnet can be flexibly adjusted when plating.


Micrometer and vernier caliper mainly measure the tolerance (dimension) of NdFeB magnet in mm. Gauss meter is mainly used to measure the magnetic force of a point on the magnet surface, unit: Gauss. Because the magnetic force of each point on the magnet surface is different, and the edge magnetic force is higher than the central magnetic force, the measured data error is too large.


Fluxmeter mainly measures the magnetic force of one side of NdFeB magnet, unit: Weber WB. Compared with Gauss meter, the data measured by fluxmeter is more objective and accurate. General magnet manufacturers will choose fluxmeter to test the finished NdFeB magnets. It is recommended that customers use fluxmeter when they come to inspect NdFeB magnets. On the one hand, it is more convenient to measure. On the other hand, it is consistent with the testing standard of magnet manufacturers. The test data is objective, accurate, and effective and timely to monitor the magnet quality.