1. Q: The magnetic energy NdFeB magnets can for how long? A: NdFeB magnets have demagnetization and will not change under a high magnetic coercivity, the natural environment and the general magnetic field. Assume appropriate environment, even after prolonged use of high temperature magnet production, the magnetic properties of the magnet are not a great loss. So in practice, we often ignore the impact of time on the magnetic properties. 2. Q: magnet vertical manufacturer of high-temperature magnets, parallelism and roundness respectively? A: For example the outer diameter of the inner annular magnet D10-D30mm range verticality: 0.15mm Parallelism: 0.10mm roundness: 0.15mm outer diameter D30-D60mm verticality within the range: 0.20mm Parallelism: 0.15mm roundness : 0.20mm above is generally standard, any special requirements please specify in the order. Of course, high-temperature magnets biggest star in the draft but also belong to the rare earth element neodymium iron and boron plus made magnets. Prior to the 1990s high-temperature magnet factory, these neodymium magnet has been rapid development, the magnetic field that fingernail produced a magnet, even stronger than the Earth's iron core of the whole field thousands of times. "At room temperature, neodymium magnets are the strongest magnets of our knowledge," Constantini Des such comments. The problem lies in the "room temperature" is. Early neodymium has a nasty flaw - thermal disturbance will always destroy those carefully arranged good spin, so the magnet demagnetization, and more than 100 ℃, complete loss of magnetism. But it only takes a little to create a ready-made patch program is in sight: in order to get a thermodynamically more stable structure, just a fraction of neodymium atoms to a few percent, replacing it heavier companion - - dysprosium. High temperature magnet manufacturer _ new _ Tong Xin magnetic temperature magnet provided by the Dongguan City, Tong Xin magnetic Limited. Dongguan City, Tong Xin magnetic Limited (www.dgxtxmagnet.com/) Dongguan, Guangdong, magnetic leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. New Tong Xin magnetic leadership with the staff warmly welcome all inquiries to discuss, with new magnetic Xin Tong better future.