Plasma polishing

 

The processing of metal surfaces in many areas of industry is of great importance. There are a variety of processing options, which can be distinguished between coated and separation processes. Polishing is fundamentally different between the mechanical and electrolytic polishing (eg. electrical and plasma polishing). Plasma polishing is, in contrast to the electro-polishing, a novel and environmentally method for electrolytic polishing, cleaning and deburring of metallic surfaces. During the plasma polishing process an anodically polarized metallic component is placed in an electrolyte. The electrolyte is an aqueous solution, whose conductivity can be varied by the addition of ammonium salt. By applying a high electric potential gas the wetted component will be polished in a process-induced plasma development. The component that is surrounded by plasma experiences a minimal loss of mass, a decrease in the roughness and a removal of organic and inorganic contaminants and thus shiny burr-free surfaces. In a typical material removal of up to 10 micrometers per minute, the shape of the polished component is maintained. The plasma polishing process is thus an appropriate method in order to improve the surface quality. Promising applications for this technology include the polishing of interior surfaces, such as pipes, as well as the finishing of components and products for the medical industry.

Contact: Dipl.-Ing. Philip Töllner