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How to determine a powerful magnet quality ok or not?

by:Newland     2020-04-09
Powerful magnets in the market now sales competition every year, many production of magnet manufacturers in order to gain a better competitive advantage in the market, choose to use inferior raw materials to reduce costs. When buying a powerful magnet so we must know how to distinguish the stand or fall of quality, powerful magnet so we can buy more powerful magnets. Identifying method: judge of the quality of the powerful magnets, mainly from two aspects to analyze: ( 1) Product performance ( 2) Product appearance strong magnet performance: the performance of the powerful magnets have uniform standard, of course, the premise is the regular manufacturers products, at the time of resolution need to examine the related parameters of the powerful magnets, such as: magnetic energy product, coercive force, remanence and related performance. Conventional measuring method is a powerful magnets of different sizes using gauss meter or magnetic flux table to distinguish powerful magnet magnetic energy product, and more professional requires the use of static magnetic characteristics tester. Powerful magnet appearance: the appearance of the powerful magnet check mainly include five categories: 1. Magnet magnet appearance have scratches, Including the scratches, the line mark, mark, etc. ) 2. Magnets have surface pitting, Including pitting, pits, bubble, scars, slag layer and partial thickness, plating tumor) 3. If there is any crack (magnet surface Including crack, crack, etc. ) 4. The magnet on the surface have edge ( Including the ke, collapse while, residual) 5. Magnets have surface sand holes ( Including sand holes, porosity, pore, particles, etc. ) As a whole is to see the magnet if there is a lack of edge Angle, plating are in good condition, whether the size meet the design requirements; Ndfeb usually have plating to protect its corrosion and rust. In general the same specifications of the magnet on a plane can be adsorbed by handle can also be simple to identify the size of the magnetic force on a: magnets used in five major attention question next article: magnet storage considerations
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