Silicon steel sheet is an indispensable low-carbon ferrosilicon soft magnetic alloy for power, electronics and military industries. It is also the most productive metal functional material. Its output accounts for about 1% of world steel production. It is 0.8% silicon. -4.8% of ferrosilicon alloy, hot and cold rolled into a silicon steel sheet with a thickness of 1 mm or less. · Adding silicon can increase the electrical resistivity and maximum magnetic permeability of iron, reduce coercivity, core loss (iron loss) and magnetic aging. It is mainly used as the core of various motors, generators and transformers.