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Silicon steel coil, also known as electrical steel coil, is an alloy made by adding a small amount of silicon (generally below 4.5%) to pure iron. It was found that the addition of silicon greatly improves the physical properties of silicon steel, like increasing electrical resistivity, reducing core loss, decreasing curie temperature, and enhancing magnetic permeability. Nowadays, silicon steel coil is the most productive and used material in soft magnetic materials for power, electronics, and military industries.
Generally speaking, silicon steel coil can be divided into different types, including:
According to the manufacturing method: it can be divided into hot rolled silicon steel coil and cold rolled silicon steel coil.
According to grain orientation, it can be divided into oriented silicon steel coil and non-oriented silicon steel coil. Both are produced by the cold rolling process.
According to the thickness: it can be divided into ordinary thickness silicon steel coil and ultra-thin thickness silicon steel coil.
| Product Name | silicon steel coil |
| Standard | AISI, ASTM, GB, JIS, DIN |
| Width | 600 – 1250 mm |
| Thickness | 0.18 – 0.65 mm |
| Processing Service | bending, uncoiling, welding, punching, and cutting |
| Supply Ability | 50000 Ton/per month |
*Note: When used at industrial frequency (50Hz), the thickness of the commonly used silicon steel coil is 0.2~0.35mm; when used at 400Hz, it is appropriate to choose 0.1mm thickness. The thinner the thickness, the higher the price.
1. Excellent magnetic permeability: silicon steel coil can greatly reduce iron loss and hysteresis loss when used in electrical equipment, thereby improving the working efficiency.
2. Low iron loss and hysteresis loss: low iron loss is the most important indicator of silicon steel coil All countries divide the silicon steel coil grades according to the iron loss value: the lower the iron loss, the higher the grade; the lower hysteresis loss means less wasted energy in the form of heat from alternating magnetizing force. This feature not only helps improve the efficiency of the electrical machine but also reduces the noise generated by the machine during operation.
3. Stable performance: silicon steel coil has high stability and is not easily affected by environmental factors such as temperature and humidity. This makes the electrical devices less prone to deformation, cracking, and other problems during long-term operation, thereby extending the service life of the devices.
4. Excellent processing performance: Gnee silicon steel coil has excellent toughness. Thereby it can be easily cut, punched, sheared, welded, stacked, and other processing. Gnee also offers silicon steel coils in different grades, sizes, and thicknesses to satisfy your needs.
5. Low magnetostriction: it has a low tendency to expand or contract in magnetic fields.
6. High electrical resistivity: it can lessen the core loss by reducing the eddy current component.
7. High magnetic induction: the magnetic induction of silicon steel coil is high under a strong magnetic field. This not only reduces the volume and weight of the iron core of the motor and transformer but also saves silicon steel coils, copper wires, and insulating materials.
8. Smooth surface: silicon steel coil generally has a smooth surface, uniform metallic color, and uniform thickness, which can increase the filling factor of the iron core.
9. Excellent insulating coating performance: the adhesion of the surface insulation film surface is good, which can prevent corrosion and improve punching performance.
10. There is a slight thickness difference between the horizontal and the longitudinal direction, promising a high lamination factor.
These properties make silicon steel coil suitable for applications where efficient energy conversion is required. It is essential in the following power electronic industries:
– electrical appliances ( mainly used as the core of various transformers, motors, and generators)
– Automobile applications (can be used to manufacture starters and so on)
– Household appliances
– Reprocessing (used to produce silicon steel sheets and silicon steel strips)
