| 摘要 |
An aluminum electrolytic capacitor is housed in an aluminum can (20) having one open end. A standard glass-to-metal seal (30) having an outer tantalum rig (34) is seated snugly within the mouth of the can. With the edge (38) of the tantalum ring positioned flush with, or slightly below, the lip (39) of the aluminum can, a beam of the pulsing infra-red laser is directed at the interface between the tantalum ring (34) and aluminum lip (39), causing the lip to melt, to flow over, and to form a continuous annular Al-Ta weld with the tantalum ring, so as hermetically seal the ring (34) to the can continuously and completely at a peripheral edge (38) of the tantalum ring. <IMAGE> |
