Electrochemical polishing

As a further acquisition in our technlogy part during 2015 is a technology for electrochemical polishing.

This technology further extends the services we provide as part of our surface treatment division, i.e. sand blasting and acid pickling. The technology expands our possibilities to work with stainless steel and achieves to higher levels of surface quality.

The electropolishing process smooths and streamlines the microscopic surface of a metal object such as 304, 316, and the 400 series stainless steel. As a result, the surface of the metal is microscopically featureless, with not even the smallest speck of a torn surface remaining. Smoothness of the metal surface is one of the primary and most advantageous effects of electropolishing.

The principle

The processing chemical removes a thin layer of material across the entire wetted surface of the part, thereby smoothing and polishing it in the microsphere. At the same time any particles, flakes, debris, contaimination and structural damage contained in the surface layer is removed. Higher removal rates along tips and edges removes the burrs to be found there up to a size of approx. 0.5 mm.

Processing is largely independent of the form, size and structure of the parts. Simply immersing them in special tanks ensures a safe and cost-effective processing of the entire surface. Even in the µm range the removal rate is precise, controllable and reproducible. Removal is determined by the concentration of chemicals in the tank, the temperature of the solution and the current on the surface of the part. By controlling these parameters the repeatabilty of the processing can be guaranteed.

Maximum size of the polished parts can be 2000x1000x1000mm.