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Introduction of the method of making all kinds of ndfeb _ ndfeb strong magnet manufacturers

by:Newland     2020-04-05
The method of making all kinds of ndfeb introduction 1, sintered ndfeb, 烧结钕铁硼) ​ ( Sintered ndfeb permanent magnet after airflow grinding powder metallurgy, the coercive force value is very high, and has extremely high magnetic energy, the maximum magnetic energy product Bhmax above ferrite ( Ferrite) More than 10 times. Its mechanical properties are also very good, can cut different shape and drilling. High-performance products of the highest working temperature can reach 200 degrees Celsius. Very hard and brittle, has a high back magnetic, high cost/performance ratio, is not suitable for high temperature) 。 2, bonded ndfeb ( 粘结钕铁硼) — — Bonded ndfeb is ndfeb powder and resin, plastic or low melting point metal binder such as mixing, and then use methods such as compression, extrusion and injection molding compound made of ndfeb permanent magnets. Product forming at a time, without secondary processing, can be directly to make all kinds of complicated shape. Every direction of bonded ndfeb magnetic, can be processed into ndfeb compression mould and injection mould. Precision, magnetic is admirable, good corrosion resistance, high temperature stability is good. Bonded magnets, magnetic: depends on the performance of magnetic powder and the relative density of magnets, bonded magnets mechanics performance depends on the nature of the binder and binding process. 3, injection ndfeb ( 注塑钕铁硼) — — Has high precision, easy to shape anisotropy complex thin-walled rings or thin magnet. 4, casting ndfeb ( 铸造钕铁硼) — — By vacuum induction furnace melting into permanent magnet alloy cast ingot, then through 1000 ℃ annealing, get the isotropic cast magnets, its craft is simple, low cost, performance has been able to approach the performance of the sintered magnets of the same type.
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