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High Performance Magnets Made by Traditional Equipment

机译：传统设备制造的高性能磁铁

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Now it is the booming period for China magnet industry. Both performance & output of produced NdFeB magnets are increased and improved sharply: output of sintered NdFeB was 6500 tons in 2000, it reached to 8,000 tons in 2001. Accoding to the forecast of National Associetion of Magnets the outpt of China will be 75% of global total in 2005, i.e. it will be reached to 15,000 tons at that time. But in fact it was already 18,000 tons in 2003. How big the jump is in output expansion! The magnetic performance of products is improving at the same time: magnets of N50,N48M, N46H are the highest grade made in China before 2003. But N52, N52M are available now! As it is well known that such high grade magnets may be no problem for manufacturers equipt with advanced hard ware such as strip caster, hydrogen decrepitation furnac, rubber isostatic press (RIP), continuous sintering furnace....But for most Chinese magnet manufacturers such equipment is hard to use simply due to their extremely high cost. On the other hand, the market demand for high grade magnets is risen. How to meet the requests from customer without changing traditional equipment is the major problem faced by Chinese magnet manufacturers. More and more strict requests for NdFeB magnets have been risen by customers: they asked not only high magnetic properties such as high Br, high iHc and high (BH)max, but the consistency of magnetic properties as well, moreover, the thermal stability (the irrevercible flux loss should be low), the corrosion resistance should be high enough. In order to meet such requests advanced equipment is needed, but the technology, quality control and nice management are more important. Based on the traditional equipment, by improving process and quality control system established we developed new process, which is able to make high grade magnets.
机译：现在是中国磁铁行业蓬勃发展的时期。钕铁硼磁体的性能和产量均得到大幅提高和提高：2000年烧结钕铁硼的产量为6500吨，到2001年达到8000吨。根据国家磁铁协会的预测，中国的产量将占总产量的75％。 2005年全球总量，即那时将达到15,000吨。但实际上，2003年已经达到18,000吨。产量增长的幅度很大！产品的磁性能同时在提高：N50，N48M，N46H磁体是2003年以前中国制造的最高等级的磁体。但是N52，N52M现已上市！众所周知，这种高质量的磁体对于配备先进硬件的制造商来说可能不是问题，例如带钢连铸机，氢爆破炉，橡胶等静压机（RIP），连续烧结炉...。但是对于大多数中国磁体制造商而言仅仅由于它们的极高成本而难以使用这种设备。另一方面，对高级磁体的市场需求上升。如何在不改变传统设备的情况下满足客户的要求是中国磁铁制造商面临的主要问题。客户对NdFeB磁体的要求越来越严格：他们不仅要求诸如高Br，高iHc和高（BH）max之类的高磁性能，而且还要求磁性能的一致性以及热稳定性（ （不可逆流量损失应低），耐腐蚀性应足够高。为了满足这样的要求，需要先进的设备，但是技术，质量控制和良好的管理更为重要。在传统设备的基础上，通过改进工艺和建立质量控制体系，我们开发了能够制造高品质磁体的新工艺。

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