The difference between electrical steel and non oriented electrical steel
Non oriented electrical steel is a soft ferromagnetic alloy with low carbon content. It is an important material in the electric, electronic and military industries. According to statistics, in 2000 the total output of electric steel in the world was 6 million 714 thousand tons, and by 2005 it had exceeded 8 million tons. At present, the domestic market consumption has been far more than 3 million tons. Among them, the non oriented silicon steel is the core material of the motor and generator rotor in the rotating magnetic field, which requires good magnetic properties and process performance. In recent years, with the development of high speed and miniaturization of motor, higher requirements have been put forward for the performance of non oriented silicon steel, such as low iron loss and high magnetic induction strength under high frequency.
The requirements of generator and transformer for silicon steel sheet are the same. They require low iron loss, good magnetization and high lamination coefficient, but the transformer is made of oriented silicon steel sheet, and the generator is made of non oriented silicon steel sheet,Identify oriented silicon steel sheet has two kinds of methods: 1. eye view method, has oriented silicon steel is white;2. hand folding, a piece of silicon steel sheet with hands folded in two, with orientation will fall gray white slag, andRepeated two fold to three times will be broken, non oriented silicon steel sheet is folded in ten are difficult to break.
The main key to improve the performance of non oriented electrical steel is to realize the strict control of the steel composition, because the trace element has great influence on the magnetic properties of the non oriented silicon steel.
Electric steel, also called silicon steel sheet, is an important soft magnetic alloy for electric, electronic and military industries. It is also the largest metal functional material. It is mainly used as the core of various motors, generators and transformers. Its production process is complex, manufacturing technology is strict, and foreign production techniques are protected in patent form, regarded as the life of an enterprise. The manufacturing technology and product quality of the electric steel plate is one of the important symbols to measure the development of a special steel production and the development of science and technology in a country. At present, the number of China's cold rolled electric steel quality, specification grade, energy (electricity) can not meet the needs of the industrial development in the production technology and equipment, compared with the Japanese management and scientific research, there is a big gap.
