Process for laser welding of aluminum based elements
US4760240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Feb 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for laser welding a cover and a casing, each made of aluminum or an aluminum-based alloy, via a nickel layer plated thereon, thereby forming a package for electronic devices, the process comprising the steps of: boring holes in sides of the casing, thereby providing holes through which input/output and source terminals can be inserted and be soldered hermetically to the casing; plating a nickel layer on the surface of the casing; mounting electronic devices in the casing and forming necessary connections between the devices and the terminals; and, welding the cover and the casing together by pulsed YAG laser beam, thereby forming a weld zone containing 1.5 to 10.0% of nickel by weight, and sealing the cover and the casing hermetically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.