What is Electropolishing
& Electrolytic Polishing?
Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing, is fundamentally the reverse of electroplating. It is an electrochemical process that removes small amounts of material from a metallic workpiece, reducing the surface roughness by levelling micro-peaks and valleys, thus improving the surface finish. It is used to polish, passivate, and deburr metal parts.
What metals can be Electropolished?
Almost all metals may be electropolished, (including aluminium, copper, titanium and nickel- and copper-alloys), although the most-commonly polished metals are stainless steels from the 300 and 400 series.
Due to its ease of operation and its effectiveness in polishing irregularly-shaped objects, electropolishing has become a common process in the production of components for the food, medical, and pharmaceutical industries.
Electropolishing is commonly used to prepare thin metal samples because the process does not mechanically deform surface layers in the way that mechanical polishing does.
Incisions Ltd specialises in the electropolishing of small components for the medical industry.
Benefits of Electropolishing
- Improved surface finish making components generally more aesthetically pleasing.
- Creates a clean, smooth surface that is easier to sterilise.
- Can polish areas that are inaccessible by other polishing methods.
- Removes a small amount of material from the surface of the parts, while also removing small burrs or high spots.
- Can be used to make a repeatable, controlled minor reduction in the size of parts.