A dental manufacturer producing cobalt chrome bridge components via additive manufacturing was experiencing challenges with surface finish quality.
The printed parts exhibited a rough surface texture of 3.10 μm Sa, with semi-sintered powder visibly clinging to the outer surfaces. These imperfections not only affected the appearance of the part but also raised concerns about hygiene and fit – both critical factors in dental applications.
The customer’s main objective in the trial was to investigate electroform™’s ability to remove all traces of semi-sintered powder from the component, with a secondary objective to improve the aesthetics of the part, uplifting the surface finish to be even, smooth, and shiny.
Holdson’s electroform™ technology was selected to polish the parts using a cobalt chrome-specific, acid-free electrolyte. In a single 20-minute cycle, the system targeted both surface roughness and powder
residue, using a controlled electrochemical process that achieves even material removal, even with intricate geometries.
This non-abrasive approach ensured that key design features and fine details remained intact throughout the process.
HOLDSON LIMITED
Unit 6, Pennine Court, Standback Way, Skelmanthorpe, Huddersfield, HD8 9GA
