NdFeB magnets can be divided into two types: bonded NdFeB and sintered NdFeB magnets.
Bonding is actually injection molding, while sintering is vacuuming through high-temperature heating. NdFeB magnets are by far the strongest permanent magnets. Material grades are N35-N52; various shapes can be processed according to specific requirements: round, square, perforated, magnetic tile, magnetic rod, convex, trapezoidal, etc. Despite these advantages, the surface is prone to rust, so some protective finish is usually required: nickel plating, zinc plating, gold plating, epoxy, etc. The ambient temperature of NdFeB magnets is below 80 degrees, but there are several types of 200 degrees. Mainly used in electronics, electrical appliances, packaging, motors, toys,
1. Because Nd-Fe-B magnets are fragile, once they are freely absorbed into the magnets, they are easily damaged. Some strong magnets can fly up to 300mm. Sure, the magnet is broken, we can buy one, but if the fingers are squeezed in or into the skin, it's broken. Take the minced meat lightly, otherwise you may be in danger. I can't be alarmist. When we touch strong magnets, we must be careful not to cause something that should not be missed.
2. If two strong magnets come together, even if we are not injured or the magnets are not broken. It is difficult to separate the two magnets. Of course, it's easier with small, strong magnets. If 50mm square magnets or round magnets are attracted together and you want to separate them, their magnetic separation will be reduced in addition to demagnetization or heat demagnetization. I introduced a small method of placing one of them on a non-iron table to fasten the other to the other. In the direction of perpendicular magnetization, we press down with wooden boards to make the contact surface smaller and smaller, and then separate.
3. We often come into contact with NdFeB magnets, and we rarely wear watches, especially mechanical watches, when working. Once they get close to the magnetic field, they are inaccurate. Of course, if it is adsorbed by a magnet, it is likely to cause deformation of the hands and gears in the watch, and the loss will be greater.
4. In addition to watches, we often use magnetic cards such as bank cards and ID cards. We have to stay away from strong magnetic fields or we might get magnetized.
5. Another point to remind everyone is to be careful when flying with magnets. Generally, people from airlines will not let you take the plane, because it will affect the navigation of the plane. unless you do shielding. The same goes for shipping. Generally, our magnets or magnetic wheels can only be shipped to customers, but the courier company does not take air freight.
