Low expansion laser welding arrangement
US4424435A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Sep 11, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An arrangement for laser beam welding wherein at least one of the components being welded is formed of a material which is substantially transparent to radiation at the wavelength of the laser welding beam. A layer of welding material is placed over the surface area of the weld joint, and is a type of material which is substantially absorbent of radiation at the wavelength of the laser welding beam. The welding material is then irradiated by the laser beam through the component which is substantially transparent thereto for a sufficient period of time to cause melting of the welding material and fusion thereof to the two components being welded. The present invention has particular applicability to welding with a Nd-YAG laser of components formed of silica-containing material, such as fused silica or titanium silicate, and wherein the welding material placed at the weld surface area is a titanium based material. The present invention is also particularly attractive for weld locations which are physically inaccessible to direct irradiation, but can be irradiated through the material which is substantially transparent to the laser welding beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.