Demand for electrical steel sheets, essential for high-efficiency transformers and motors, is increasing. We are conducting research into the fabrication of low-loss electrical steel sheets.
We have developed {100} (Cube) oriented iron sheets with controlled crystal orientation by rolling. This crystal orientation technology leads to the development of low-core-loss, bidirectional electrical steel sheets.
Demand for electricity is increasing worldwide, and in Japan, power shortages during peak summer hours have been noted if internal combustion engines were replaced with electric vehicles (BEVs). Therefore, domestic power generation capacity must be further expanded. The power transmission grid consists of transmission lines, substations, and distribution lines, and transformers are essential for power transmission. Energy losses occur in transformers and transmission lines during power transmission and distribution. Transformers are essential for power transformation, and current transformers use grain-oriented electrical steel ({110} (Goss) oriented electrical steel). Transformers using bidirectional (cube-oriented) electrical steel reduce losses in substations and efficiently utilize the electricity generated.
The preferred orientation of steel sheets produced by rolling is (111). Our crystal orientation technology allows for the crystal orientation of steel sheets to be Cube-oriented. Using bi-directional electrical steel sheets with Cube-oriented crystal orientation in transformer cores reduces energy loss in the transformer, enabling more efficient use of generated electricity.
Specifically, this research is expected to lead to research into the development of low-loss electrical steel, more efficient transformers, and more efficient motors.
| Research | |
|---|---|
| Journal | MATERIALS TRANSACTIONS (Mater. Trans.) |
| Title | EBSD Observation of Pure Iron with Near-Cube Orientation Fabricated by Cold Rolling and Annealing |
| Author | Daisuke Okai, Masatoshi Yae, Atsushi Yamamoto, Toshiya Doi |
| Member | Daisuke Okai (Engineering, Metallography) |
| URL | https://doi.org/10.2320/matertrans.M2016443 |
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