Liquid electropolishing
- The liquid electrolyte touches all surface areas
- Oxidation occurs on all contact areas (also in the valleys of the surface roughness profile)
- Comparatively less selective finishing of the surface
DRY ELECTROPOLISHING
Precise surface finishing of metal components with the DryLyte technology
Industry SeriesDry electropolishing - DryLyte
The dry electropolishing method, developed by the Spanish tech company GPAINNOVA, is an innovative technology for finishing the surface of metal components. It refines the surface considerably better than manual grinding and polishing operations - just in one single step! Compared to other processes, such as liquid electropolishing, it has numerous advantages. For example, work pieces treated with the dry electropolishing method have a highly homogeneous surface without any micro scratches or indentations. DryLyte allows extremely tight dimensional tolerances and generates mirror finishes. In addition, the process is much less detrimental to the environment than liquid electropolishing. Moreover, operating the machines and handling the consumables is very easy.
The DryLyte technology is utilized in the GPAINNOVA DLyte equipment that is exclusively sold in Germany by Rösler. The machines can be fully automated and easily integrated into complex manufacturing lines.
DryLyte technology
DryLyte is a patented technology for surface grinding, polishing, deburring and edge radiusing of metal components. The dry electropolishing method does not remove material from the work pieces through mechanical abrasion but through an ion exchange between the metal components and an electrolyte embedded in polymer granules.
The surface of the work pieces has a positive electrical charge, whereas the electrolyte is negatively charged. The electrical flow in the processing bowl and the motion of the work pieces against the electrolyte granules causes a gentle and highly controlled removal of material from the work pieces. The material removal is limited to the roughness peaks of the work piece surface. The DryLyte system does not cause unwanted rounding of edges and, because the polymer granules are extremely small, they reach tight surface areas, which cannot be accessed by mechanical grinding. Dry electropolishing achieves the same smoothing effects as liquid electropolishing but removes considerably less material.
Comparison liquid electropolishing vs. dry electropolishing
Compared to conventional electropolishing the DryLyte technology utilizes a selective finishing approach. This results in fast removal of roughness peaks and increases the relative material ratio (Rmr). But that is not the only advantage of the DryLyte system:
Dry electropolishing
+ The polymer granules remove only the roughness peaks
+ Precisely targeted oxidation
+ Selective removal of metal
+ DryLyte maintains the most intricate work piece geometries
+ The corrosion resistance of the work pieces is maintained
The benefits of the DryLyte technology at a glance:
01 Homogeneous finishing results
DryLyte generates homogeneous finishing results on the entire work piece surface and removes micro scratches.
02 Maintaining the geometrical integrity of the work pieces
DryLyte ensures compliance with tight dimensional tolerances by maintaining the original work piece shape, including the edges. This guarantees extremely precise finishing results.
03 Top grade for surface smoothness
DryLyte reduces not only the surface roughness by more than 80% but also prevents unwanted side effects. Liquid electropolishing reduces the surface roughness at most by 50%, before it creates side effects like an orange peel finish or pitting.
04 Minimal metal removal
Removes metal evenly on the entire work piece surface, all the way to the roughness valleys.
05 Absolutely consistent, repeatable results
The DryLyte technology guarantees consistent finishing results, batch after batch, throughout the service life of the electrolyte medium. Physical wear, as happens with abrasive media, does not take place.
06 DryLyte improves the relative material ratio (Rmr). This is particularly advantageous for bearing components
It allows an even distribution of the lubricating film, improves the load bearing characteristics of the bearing and minimizes friction loss between the bearing components.
07 Improved corrosion resistance
Reduces the wear rate of numerous materials, lowers the risk of breakage, improves the fatigue life and improves the surface characteristics on metal components. It removes embedded free iron particles, surface contaminations, discoloration due to heat and oxide scale.
08 Proven biocompatibility
For the surface finishing process only polymer granules containing acid are utilized. The media is made from high-quality ingredients. This ensures compliance with the strictest cost-benefit standards regarding biocompatibility and toxicity.
09 Prevents a grinding effect with unwanted texturing
This is the only finishing technology that reduces surface roughness and improves the corrosion resistance on metal components. At the same time, it reduces the number of required treatment steps in the manufacturing process.
Industry Series
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