Cleaning of precision parts with ultrasound

Every surface treatment needs a previous and final cleaning. Aqueous cleaning with the use of ultrasound in combination gives the best cleanliness in relative short times.

The mechanical activation of the cavitation by means of the ultrasound gives very good cleaning results especially on parts with complicated geometry and delicate structures, such as dead-end holes and grooves. Ultrasonic cleaning is a gentle cleaning procedure by which delicate surfaces can also be cleaned safely and efficiently.


Mass-finishing is a grinding process for the surface finishing of mostly metal parts. The interplay between the specific machine, shape and composition of grinding media (chips), compounds and water are important process parameters which have to be adapted to the treated parts.

Our experience in surface-technologies, as well as the daily application in our Medical Surface Center are your guarantee for efficient solutions which are modeled for your parts.

Wet and dry blasting – Texturing of surfaces

A lot of different media can be used for blasting processes. Those media can be abrasive in order to texture the surface, equalise irregularities or to eliminate contamination. Media which compact the surface in the boundary layer can also be used. Through this process the fatigue-strength of metallic components can be enhanced significantly.

Electrolytic polishing of stainless steel – Levelling and brightening the surface

Electrolytic polishing (electropolishing) as a surface-finish for stainless steel has been widely used in the overall, as well as med-tech industry for decades. It is a process in which metal from the parts being treated is dissolved as a result of electrical current. The object is for this purpose placed in a special electrically conductive solution.

Electrolytic polishing reduces the surface roughness. Sharp edges such as burrs and corners are removed faster which leads to the “finest-deburring” of the entire surface. This in turn leads to a bright, reflecting surface with an improved resistance to corrosion due to chromium enrichment of the surface.

Passivation – Improvement of the corrosion resistance

Stainless steel which is used in the med-tech industry has to have excellent corrosion resistance against all media which are in contact with the product. This corrosion resistance can be reached by passivation. Through the passivation process exogenous surface contamination, such as free iron from tooling or iron oxide, are removed and the formation of a homogenous passive film of chromium-oxide facilitates on the stainless steel surface. This significantly improves the corrosion resistance of the product.

Colour anodising – TioCol™ (Anodising type III)

Colour anodising of commercially pure titanium or titanium alloys in orthopedics fulfills several needs and expectations.

Besides other aspects the following requirements and advantages are primarily in the forefront:

  • Influence of the interaction between the implant and the surrounding tissue
  • Improvement of the gliding properties of the material
  • Chemical and thermal stable colouring of the surface
  • Durable and unique colouring for aesthetic purposes or color-coding of products

Through integrated and controlled processes a large number of colours that are attractive, functional and reproducible in both alloyed and commercially pure titanium products can be generated.

Anodising type II – TioDark™ (Dark- or hard anodising)

The phenomena of galling during mechanical sliding or rubbing action of Titanium is reduced significantly by this surface finish. In addition, an increase in fatigue strength on the order of 15%-20% can be achieved without additional mechanical finishing operations. TioDark™ anodising is also bio-compatible and an essential implant requirement.

Laser marking – Precise and durable identification

Laser marking is an ideal method for the precise and durable identification or labeling of delicate products for orthopedic implants and instruments as well as for measuring devices. It creates a precise, visually attractive, functional and reproducible marking of products.