ELECTROCHEMICAL GRINDING OF GALVANIZED ELECTRICAL CONNECTORS FOR THE RAISE OF STATIC COEFFICIENT OF FRICTION IN THE CONNECTION

Galvanic coating of electrical connectors is viewed. It was established that the existing electroplating technologies ensure the surface quality that was obtained on the support material. Using the example of galvanic nickel plating on a copper support plate, a method for improving the quality of the nickel-plated surface layer is proposed. It is proposed to use electrochemical grinding as an additional technological operation. Alternating electrochemical grinding and galvanic nickel plating will make it possible to obtain a higher-quality nickel surface layer, which will allow for a larger area of actual contact in the connection. This, in turn, will increase the static coefficient of friction and the reliability of the electrical connection during vibrations. The presented surface will provide a minimum number of cracks, deep scratches and dents on the product, which in turn increases electrical conductivity, surface compound of the contact electrical connectors, and also reduces the electrical resistance that occurs when interconnection.

nickel plating, electrochemical grinding, static coefficient of friction, surface quality, actual contact area