As the latest result of the development of rare soil permanent magnet materials, it is called "Magnetic King" due to its excellent magnetic properties. The magnetic material of iron boron is alloy of metal, boron iron, etc. Also known as magnetic steel. The tin iron boron magnet has a very high magnetic energy accumulation and correction force. At the same time, the advantages of high energy density make the permanent magnet material in modern industrial and electronic technology The miniaturization, lightweight and thinness of magnetization and other equipment are possible. The advantage of the Citroe Boron Magnet is that it is cost -effective and good mechanical characteristics; the shortcomings are that the temperature point of the residence is low, the temperature characteristics are poor, and it is easy to powder and corrodes. In order to meet the requirements of practical applications.