Surface crack sealing method
US8378256B2 · kind B2 · utility
0Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2008 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Jul 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21C19/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of sealing a surface crack in a member is provided includes steps of irradiating a region of the member at which the crack is produced with a heating laser beam so as to heat the region to a temperature lower than a melting point of the member, and then irradiating a region of the member at which the crack is produced with a welding laser beam subsequent to irradiation of the heating laser beam so as to heat the region to a temperature higher than or equal to the melting point of the member, thereby sealing an opening of the surface crack of the member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.