Summary
In the context of improving power conversion and transmission efficiency, controlling transformer operating losses is critical. In transformer manufacturing, silicon steel sheet cutting parameters greatly affect core operational power losses. This study systematically analyzes shearing parameters’ impacts on M85-23R5 and M100-27R5 grain-oriented silicon steels.
Read more Read lessBeyond single-sheet tests, it evaluates industrial splicing and stacking to simulate real core production for stronger practical value. With controlled variable methods including single sheet tests, scanning electron microscopy analysis and finite element method simulations, it explores shearing clearances of 0.01–0.03 mm and speeds of 50–120 m/min. Results show clearance dominates magnetic degradation, while shearing speed has negligible influence. Degradation arises from two mechanisms: plastic deformation hindering magnetic domain wall movement and burr-caused interlaminar short circuits. These adverse effects intensify notably during splicing and stacking. This research offers key theoretical support for optimizing core manufacturing and ensuring high-efficiency transformers via strict process control. Factory production data verify the conclusions that tighter shearing process control reduces average product waste and improves energy efficiency.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | D1_11572_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | China, People's Republic of |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
WANG Yuqian - Shandong Taikai Transformer Co., Ltd.; ZHAO Xingying - Shandong Taikai Transformer Co., Ltd.; SUN Qiuxia - Shandong Taikai Transformer Co., Ltd.; LI Naijun - Shandong Taikai Transformer Co., Ltd.; WANG Faqing - Shandong Taikai Transformer Co., Ltd.; LIU Qinran - Shandong Taikai Transformer Co., Ltd.
Keywords
Mechanical shearing, grain-oriented silicon steel, magnetic property, transformer
