POSCO produces over 1 million tons of electrical steel sheets every year. The non-grain oriented electrical steel has a different, non-uniform crystal orientation. Its main applications include products containing rotating parts, such as motors and generators. Grain oriented electrical steel has a uniform crystal orientation, featuring a much higher magnetic performance. Its main applications include products that have a stationary phase, such as transformers. Demand for electrical steel is increasing as the need for clean energy sources is rising to save energy and prevent environmental pollution.
Applications
Grain Oriented Electrical Steel
Conventional Grain Oriented (CGO)
The grain structure of PG-core is oriented to the rolling direction. Therefore, this product has excellent magnetic properties in the rolling direction. It is widely used for large or mid/small-size transformers.
POSCO Grades: 27CG120, 30CG130
High Permeability Grain Oriented (HGO)
The degree of grain-oriented is reinforced in the rolling direction more than PG-Core and therefore features lower core loss and higher magnetic flux density. It is used for iron core of both large and other size power transformers and desirable for high efficiency and miniaturization of machinery.
POSCO Grades: 23HP85, 23HP90, 27HP95, 27HP100, 30HP105
High Permeability Domain Refined Grain Oriented (DR)
Magnetic domain refined steel is the product that has been specially treated with laser scribing to lower the core loss by ~30% from that of CGO steel. Energy efficiency is increased and magnetostriction is lowered, resulting in low noise of this domain refined steel.
POSCO Grades: 23HP80d, 23HP85d, 27HP90d
Services Offered
- Supply of CRGO material in mother coil, slit coil & CTL lamination form
- Suggestion by providing CRGO grades for efficient transformers
- Design & innovate methods of cost reduction of power, distribution & special transformers