roughness reduction

the problem

Roughness of the additive manufactured part is always under consideration. The surface  roughness is for example influenced by the layer thickness, the powder used, the printing parameter, the angles as well as the orientation of the part in the printing chamber.

All printing parameters lead to different surface roughnesses even for the same materials and therefore to different problems in the field of post processing. There are several ways and technologies available to reduce the initial roughness of additive manufactured parts.

Besides conventional subtractive technologies, such as machining, grinding, milling and polishing, there are several chemical and electrochemical solutions available to reduce the roughness of the product.

As a result there is not “the one” solution. Sometimes the best option is a combination of different processes. Please ask our team and discuss with them your requirements.

one solution (dry) electropolishing

Electropolishing is an electrochemical process that removes material from an additive manufactured part. The idea is to reduce the surface roughness by levelling micro-peaks and valleys to improve the surface finish.

As the additive manufactured part acts as the anode and the electrolyte as the cathode, the surface roughness optimization is only possible where the electricity “hits” the surface. More complex and bionic structures and geometries are therefore sometimes hard to post process.

We offer our customers a special “dry” electropolishing process. This process is free of liquid chemistry and therefore a very green and sustainable process. Besides this, the process offers more fdesign freedom for the additive manufactured part.

Typically we treat stainless steel, steel, titanium, cobalt chrome, aluminium, nickel for the dental, healthcare, automotive and aerospace industries. 

get in touch interested in our technologies? please contact us...

Viviane Kettermann-Fernandes
Research & Development