| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Fine-piercing of Electrical Steel Sheets by Edge-sharpened Diamond-punch |
| Author(s) |
Tomomi Shiratori, Tatsuhiko Aizawa |
| On-Site Speaker (Planned) |
Tomomi Shiratori |
| Abstract Scope |
EV-motors required for much reduction of iron loss in the motor cores. Distortion of magnetic zones by piercing each electro-magnetic steel sheets of motor cores, is notices as one of the largest issues toward this reduction of iron loss. In the present paper, the edge-sharpened diamond punch was developed to significantly reduce the plastic strained area as well as the elastic recovery of pierced sheets. First, the femtosecond-laser trimming method was employed to reduce the edge curvature of diamond coating as well as the surface roughness. Micro-piecing experiments with use of EBSD analysis on the microstructure were utilized to demonstrate that plastic zones were narrowed along the shearing line. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |