Raster Marking of Surfaces with Elastic Coating

The marking of critical parts becomes part of the technological process of their manufacture, and since in production and during operation, it is necessary to know the designation of the part, the number, the manufacturer, and other information. The electrochemical marking method forms depressions on the part surface which can become a stress concentrator and reduce the performance of the product. When marking metal surfaces that have a protective dielectric coating according to existing technologies, this coating is removed, and after the application of the information array it is restored, which takes additional time and resources. It is proposed to mark the surfaces with an elastic dielectric coating with a raster electrode tool using rheological fluid. With this method, information on the surface of the part is formed in the shape of convex marks under an elastic coating without compromising its integrity and damaging the surface layers of the part. A mechanism for the formation of information signs is described, and processing modes and an example of applying information are presented.