Grain-oriented electrical steel sheet and magnetic domain refining method therefor
US11772189B2 · kind B2 · utility
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Key dates
| Filing date | Dec 17, 2018 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jan 22, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: a groove on a line formed on one surface of an electrical steel sheet in a direction crossing a rolling direction; and a thermal shock portion on a line formed on one surface of the electrical steel sheet in the direction crossing the rolling direction, wherein a distance between the groove and the thermal shock portion is 1 mm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.