What kind of strong magnet is of good quality?
- Time of issue:2021-10-20
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What kind of strong magnet is of good quality?
At present, the sales competition of powerful magnets in the market is becoming more and more intense. In order to obtain a better competitive advantage in the market, many magnet manufacturers will use inferior raw materials to reduce costs. Therefore, when buying a strong magnet, we must know how to distinguish the quality of the strong magnet, so that we can buy a relatively high-quality strong magnet.
Identification method:
To judge the quality of strong magnets, it is mainly analyzed from two angles: product performance, product appearance
Powerful magnet performance:
The performance of strong magnets has a unified standard. Of course, the premise is that the products produced by regular manufacturers need to examine the relevant parameters of strong magnets when distinguishing, such as: magnetic energy product, coercivity, remanence, etc. performance. The conventional measurement method is to use a Gauss meter or a magnetic flux meter to distinguish the magnetic energy product of a powerful magnet with different specifications and sizes, while a more professional one needs to use a static magnetic characteristic tester.
Appearance of strong magnet:
The appearance inspection of powerful magnets mainly includes five categories:
1. Are there any scratches on the appearance of the magnet (including scratches, line marks, knife marks, etc.)
2. Whether there are pits on the surface of the magnet (including pits, pitted surface, bubbles, scars, slag layer, local over-thickness, plating tumors)
3. Are there any cracks on the magnet surface (including cracks, cracks, etc.)
4. Is there any knock on the surface of the magnet (including knock, chipping, material residue)
5. Whether there are blisters on the surface of the magnet (including blisters, pores, pinholes, particles, etc.)
In general, it is to see whether the magnet has missing edges or corners, whether the electroplating layer is intact, and whether the size meets the design requirements;
NdFeB generally has an electroplated layer to protect it from corrosion and rust. Under normal circumstances, the magnet of the same specification is placed on a surface that can be adsorbed, and the magnetic force can also be easily distinguished by hand.
relevant information
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What kind of strong magnet is of good quality?At present, the sales competition of powerful magnets in the market is becoming more and more intense. In order to obtain a better competitive advantage in the market, many magnet manufacturers will use inferior raw materials to reduce costs. Therefore, when buying a strong magnet, we must know how to distinguish the quality of the strong magnet, so that we can buy a relatively high-quality strong magnet. - Permanent magnet motor and its characteristics 2021-10-20
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