What are the thicknesses of silicon steel sheets commonly used in transformers?

What are the thicknesses of silicon steel sheets commonly used in transformers?

1. The electrical machinery industry uses a large number of silicon steel sheets with a thickness of 0.35~0.50mm;

2. Thin steel strips of 0.05~0.20mm are commonly used in telecommunications high-frequency technology to more effectively reduce eddy current losses.

3. The thickness of hot-rolled silicon steel sheets is 0.35~0.50mm, and the density is 7.55~7.70g/cm3. It is mostly used in large, medium and small AC and DC motors;

4. Cold-rolled non-oriented silicon steel sheet has a thickness of 0.35~0.50mm and a density of 7.65~7.75g/cm3. It is mostly used in large alternators, electric motors, large, medium and small AC and DC motors;

5. Cold-rolled single-oriented silicon steel sheet has a thickness of 0.35mm and a density of 7.65g/cm3. It is mostly used in power transformers, reactors, magnetic amplifiers, etc.;

6. The thickness of cold-rolled single-oriented thin strip is 0.05~0.20mm, which is mostly used in radio high-frequency transformers.

The main performance requirements of silicon steel are:

① Low iron loss, which is the most important indicator of the quality of silicon steel sheets. Countries all classify grades according to the iron loss value. The lower the iron loss, the higher the grade.

② The magnetic induction intensity (magnetic induction) is high under a strong magnetic field, which reduces the volume and weight of the cores of motors and transformers, saving silicon steel sheets, copper wires, and insulating materials.

③The surface is smooth, flat and uniform in thickness, which can improve the filling factor of the core.

Silicon steel contains about 3% silicon, and the rest is mainly ferrosilicon alloy of iron. It is an important soft magnetic alloy that is indispensable in the power, electronics and military industries. It is also the metal functional material with the largest production volume. It is mainly used as the core of various motors, generators and transformers.

The main use of cold-rolled oriented silicon steel strip is for transformer manufacturing, so it is also called cold-rolled transformer silicon steel. Compared with cold-rolled non-oriented silicon steel, the magnetism of oriented silicon steel has strong directionality; it has superior high magnetic permeability and low loss characteristics in the rolling direction that is easy to magnetize.