Basic knowledge of high temperature resistant magnets


The ancient Greeks and Chinese discovered that there is […]

The ancient Greeks and Chinese discovered that there is a natural magnetized stone in nature, which is called "the magnet." This kind of stone can suck a small piece of iron in a trick-like manner and always point in the same direction after swinging at will. The early sailors used this high-temperature magnet as their earliest compass to distinguish directions at sea. After thousands of years of development, today's high temperature resistant magnets have become a powerful material in our lives. Alloys that make up different materials can reach the same effect as magnets and can also improve magnetic force. Artificial high temperature resistant magnets appeared in the 18th century, but the process of making stronger magnetic materials was very slow, until the 1920s produced Alnico. Subsequently, Ferrite was produced in the 1950s, and rare earth high temperature resistant magnets were produced in the 1970s [Rare Earth magnets contain NdFeB and SmCo). At this point, magnetic technology has been further developed, and the strong magnetic data has also made the components more compact.
What is the magnetization (orientation) direction?
Most magnetic data can be magnetized to saturation in the same direction, which is called the "magnetization direction" (orientation direction). High-temperature magnets (also called isotropic high-temperature magnets) that have no orientation direction are much weaker than those of oriented high-temperature magnets (also called anisotropic high-temperature magnets).
What is the standard "Northern and North Pole" industry?
The definition of "Arctic" is that the high temperature resistant magnet rotates freely and its north pole points to the north pole of the earth. Similarly, the south pole of a high temperature resistant magnet also points to the south pole of the earth. How to distinguish the north pole of the high temperature resistant magnet without marking?
Obviously, it is impossible to distinguish between eyes alone. The compass can be placed close to the high temperature resistant magnet, and the pointer to the north pole of the earth points to the south pole of the high temperature resistant magnet. Fuqiang Magnetic Industry
How to safely handle and store high temperature resistant magnets?
Always be very careful, because the high temperature magnets will stick together and may pinch your fingers. When the high temperature resistant magnets are attracted to each other, the high temperature resistant magnet itself may be damaged by bumping (crashing corners or knocking out cracks). Keep high temperature resistant magnets away from items that are easily magnetized, such as floppy disks, credit cards, computer monitors, watches, mobile phones, medical devices, etc. The high temperature resistant magnet should be kept away from the pacemaker.
For larger-scale high temperature magnets, plastic or cardboard spacers should be added between each piece to ensure that the high temperature resistant magnets can be easily separated. High temperature resistant magnets should be stored in a dry, constant temperature environment.