Laser Cleaning Technology of Ultra-thin Deposition Layer on the Surface of Disconnector Moving and Stationary Contacts

Abstract

The static contacts of disconnectors is to deposit ultra-thin films (about 0.1 μ m) Laser processing technology. It can be applied to rough surfaces such as contacts and connectors, which are not easy to be processed by other technologies. Its main advantages are low cost and high productivity; In addition, it can improve product quality and reduce production costs. At present, we are patrolling the contact parts of outdoor disconnectors in open substations. Due to the long-term exposure of dynamic and static contacts to the outdoors, the looseness of contact spring studs, dust haze and other reasons, the contacts is oxidized and rusted, contact resistance, heating and other defects, and the static treatment cannot be carried out in a timely manner. In view of the problems, the ultra-thin deposition layer on the surface of the double pulse laser induced breakdown spectrum defect elimination knife switch, which can be used for live maintenance and rust removal of high-voltage disconnectors. The laser spectrum is specially modulated to remove the oxidized and rusted parts, which will not damage the silver coating of human body and equipment and will not affect the operation of the power grid.