Non-oriented electrical steel is a kind of electrical steel.
Let's take a look at their respective concepts.
One, electrical steel
Electrical steel, also known as silicon steel sheet, is an indispensable soft magnetic alloy for power, electronics and military industries, and is also the largest metal functional material, mainly used as the iron core of various motors, generators and transformers. Its production process is complex, manufacturing technology is strict, and foreign production technology is protected in the form of patents, which is regarded as the life of enterprises. The manufacturing technology and product quality of electrical steel plate is one of the important signs to measure the level of special steel production and scientific and technological development of a country. At present, the quantity, quality and specification of cold-rolled electrical steel in China cannot meet the needs of the development of energy (electric power) industry, and there is a big gap compared with Japan in terms of production technology, equipment, management and scientific research.
【 Overview 】
Electrical steel has a history of hundreds of years, including Si<0.5% electrical steel and Si content of 0.5~6.5% silicon steel two categories, mainly used as a variety of motor, transformer and ballast core, is an indispensable soft magnetic alloy in the power, electronics and military industry. Electrical steel is the largest amount of magnetic materials, and it is also an important metal functional material for energy saving. The manufacturing process and equipment of electrical steel, especially oriented silicon steel are complex, the composition is strictly controlled, the manufacturing process is long, and there are many factors affecting the performance, so the quality of oriented silicon steel products is often regarded as an important sign to measure the level of special steel manufacturing technology in a country, and obtain the reputation of "art products" in special steel.
【 Classification 】
1. Hot rolled silicon steel plate (non-oriented)
2. Hot rolled high silicon steel (hot rolled transformer steel)
3. Cold rolled electrical steel plate: non-oriented electrical steel (cold rolled motor steel)
4. Silicon steel
5. Oriented silicon steel (cold-rolled transformer steel)
Two, non-oriented electrical steel
Non-oriented electrical steel is a very low carbon ferrosilicon soft magnetic alloy, is an indispensable important material in power, electronics and military industries. According to statistics, the total output of electrical steel in the world in 2000 was 6.714 million tons, and by 2005 it had exceeded 8 million tons. At present, the consumption of the domestic market has exceeded 3 million tons. Among them, non-oriented silicon steel is the core material of motor and generator rotor working in rotating magnetic field, which requires good magnetic properties and process properties. In recent years, with the development of motor high-speed and miniaturization, higher requirements have been put forward for the performance of non-oriented silicon steel, such as low iron loss and high magnetic induction strength at high frequency.
The main technical key to improve the performance of non-oriented electrical steel is to further achieve strict control of steel composition, because trace elements have a great impact on the magnetic properties of non-oriented silicon steel.
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