device for applying a metallic ueberzugs on the inner walls of a hohlkoerpers

摘要

In a device for the application of a metal coating on the internal surface of a hollow metal element in the form of a cylinder of revolution there is provided a sealed enclosure adapted to be placed on to said hollow element, a pumping set for generating a high vacuum in said enclosure which is provided with a hole cooperating with an orifice in said hollow element, electrically conductive elements passing through said hole of said enclosure from which they are insulated, a source of current connected to said conductive elements and a vapour emitter connected to said conductive elements and adapted to be introduced into said hollow metal element.