Non-oriented silicon steel ribbons are widely used in the manufacture of high-frequency magnetic components such as various telecommunications and meters, such as the iron cores of magnetic devices such as power transformers and pulse transformers. With the development of science and technology, the device is required to have high performance and small volume, so the frequency of the device is becoming higher and higher. The higher the working frequency of the iron core, the thinner the silicon steel plate is required, and the ordinary non-oriented silicon steel sheet cannot meet the requirements.