金刚石线环锯切割钕铁硼磁铁
金刚石线环锯切割钕铁硼磁铁
- NdFeB magnets are tetragonal Nd2Fe14B crystals — the strongest commercial permanent magnets in use today and the most common rare-earth magnet across electronics, motors, medical equipment and aerospace.
- There are two types: bonded NdFeB, which is magnetically isotropic and corrosion-resistant, and sintered NdFeB, which is stronger but corrodes easily and must be plated (zinc, 镍, or nickel-copper-nickel coatings).
- Traditional cutting routes are reciprocating long-wire saws for large magnets and inner-diameter (ID) slicing machines for small ones; ID machines are precise but slow.
- Diamond wire loop saws cut NdFeB about 3 times faster than ID slicing machines, which is why magnet manufacturers are rapidly adopting them.
钕磁铁, 也称为钕铁硼磁铁, 是由钕形成的四方晶体, 铁, 和硼 (钕2铁14B). 这种磁铁是当今仅次于绝对零钬磁体的第二大磁性永磁体, 它也是最常用的稀土磁铁.
钕铁硼分为两种: 烧结钕铁硼和键合钕铁硼. 粘结钕铁硼在各个方向上都具有磁性，并且耐腐蚀;
烧结的钕铁硼易腐蚀, 并且表面需要电镀. 一般来说, 有镀锌的, 镍, 环保锌, 环保镍, 镍-铜-镍, 和环保的镍-铜-镍. 烧结钕铁硼一般分为轴向磁化和径向磁化, 根据所需的工作表面确定.
用于切割大型钕铁硼磁铁, 许多制造商使用往复式长线切割, 而小型钕铁硼磁铁则用内径切割机切割. 内径切割机切割效率低, 但有时切割少量钕铁硼磁铁并不需要打开大型机器. 随着金刚石线环锯的兴起, 一些厂家开始使用金刚石线环锯切割钕铁硼, 切割效率 3 是内径切割机的倍数, 受到了国内众多厂家的欢迎.
烧结钕铁硼永磁材料具有优良的磁性能，广泛应用于电子产品中, 电机, 准确的操作力误差, 玩具, 包装, 五金机械, 航空航天等领域.
比较常见的是永磁电机, 扬声器, 磁选机, 计算机磁盘驱动器, 磁共振成像设备及仪表.
下面为钕铁硼切割视频供参考:
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The full process for this material is documented in how to cut neodymium magnets.
常见问题
What is the best way to cut NdFeB magnets?
For small NdFeB magnets, a diamond wire loop saw is currently the best option: it cuts about 3 times faster than an inner-diameter slicing machine while handling the hard, brittle sintered material cleanly. Large magnets have traditionally been cut on reciprocating long-wire machines, but wire loop saws are taking over there as well.
What is the difference between sintered and bonded NdFeB magnets?
Bonded NdFeB has magnetism in all directions and resists corrosion. Sintered NdFeB delivers higher magnetic performance but corrodes easily, so its surface must be plated. Sintered grades are also divided into axial and radial magnetization depending on the required working surface.
Why do sintered NdFeB magnets need surface plating?
Because the sintered material corrodes readily when exposed. Common protective coatings include zinc, 镍, environmentally friendly zinc and nickel, and nickel-copper-nickel multilayer plating.
Where are NdFeB magnets commonly used?
Typical applications include permanent magnet motors, 扬声器, 磁选机, 计算机磁盘驱动器, MRI equipment and meters — spanning electronics, 电机, 医疗设备, 玩具, 包装, hardware and aerospace.
Reviewed by the Ensoll engineering team.
