When the magnetized magnetized magnetization of the powerful magnet technology, the value of the reverse magnetic field required to reduce the magnetic induction intensity of the magnetic field is called the magnetic induction stubborn force (HCB). But at this time, the magnetization strength of the magnet is not zero, but the effect of the reverse magnetic field and the magnetic strength of the magnetic field offset each other. (External magnetic induction strength is zero) At this time, if the external magnetic field is removed, the magnet still has a certain magnetic performance. The stubborn force of the 力 iron boron is generally more than 11000oe.

The magnetic field is removed by an external magnetic field in a closed -circuit environment to the technical saturation. At this time, the magnetic induction strength of the magnetic expression of the magnet is called the remaining magnetic strength. It represents the maximum magnetic flux value provided by the magnet. It can be seen from the degradation curve that it corresponds to the situation where the gas gap is zero, so the magnetic induction strength of the magnetic magnetic sensor in the actual magnetic circuit is less than the remaining magnetic. Tie Iron Boron is the highest practical permanent magnet material discovered today.

The powerful magnetization strength of the magnetic magnet is reduced to the reverse magnetic field strength required to be applied by zero. The internal orthodox stubborn force is a physical quantity to measure the magnetic resistance of the magnetic resistance. If the magnetic field that is added is equal to the internal orthopedic force of the magnet, the magnetic properties of the magnet will be basically eliminated. The HCJ of  Iron Boron will decrease as the temperature rises, so you need to choose a high HCJ brand when working at a high temperature environment.