Cutting amorphous metal by crystallization with a laser or electron beam
US4328411A · kind A · utility
42Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/325
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rapid method of cutting thin amorphous metal sheet material is to use a focused heat source such as a laser beam or electron beam to heat local regions of the material above the crystallization temperature and form brittle crystalline lines along which the material fractures when it is mechanically deformed as by passage through a set of rollers. The material is not melted and does not form burrs. A higher packing factor is possible for motor and transformer laminations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.