Mirror finishing - 德莱特

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Mirror Finishing with DLyte

A mirror finish is a highly-polished finish, characterized by a bright, shiny, reflective metal surface. It can be found in aesthetic parts, such as architecture, transportation, consumer goods, or metal pieces aimed at fashion and luxury industry, but also in metal pieces produced for food, pharma and medical applications. A high-quality mirror finish is not only visually appealing, but the gradual removal of surface scratches through polishing processes reduces indentations or grooves on metal, which may contain contaminants, such as dirt or bacteria. Those surfaces are easy to clean, more corrosion resistant and allows detection of design flaws.

Besides a significant aesthetical improvement, mirror-finished pieces are much less susceptible to contamination than rough surfaces. Smooth surfaces are achieved by working with different grits in mechanical applications to gradually remove scratches and blemishes from the metal. For example, in more technical terms, mirror-finished steels have an Ra index between 0.15 (6 microinches) and 0.3 (12 microinches)- Ra. That is: concerning roughness average, which measures the microscopic peaks and troughs on the surface of the metal, the lower the number, the fewer or smaller the peaks and troughs, which means that polished metal surface looks smoother and more brilliant.

Dry electropolishing processes achieve homogeneous results across the surface and eliminates micro-scratches and milling lines. The system works efficiently at micro and macroscopic level. They also enhance negative surface skewness (rsk), increasing the surface bearing contact area —therefore, allowing uniform lubricant film distribution—, improving the bearing ratio and reducing the friction between metal parts. In addition, dry electropolishing respects tolerances and preserves the initial shape of pieces, even the cutting edges, avoids generating grinding texture patterns. It offers best-in-class surface roughness (Ra under 0.01 micrometers) and protection against corrosion.