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March 29, 2019 Medical Device Electropolishing Made Simple
NuGenTec is a one stop shop for electropolishing. NuGenTec's EP 316 creates a microscopically smooth, corrosion-free surface every single time it is used for electropolishing. This article will walk you through what electropolishing is and how to incorporate it into your process in 5 simple steps.
What is Electropolishing?
Electropolishing uses a voltage in a conductive solution to pull undesirable buildup, scale, macro- and micro-burrs and embedded contaminants from the surface of metals. Unlike mechanical finishing processes, NuGenTec's EP 316 never smears, stresses, bends or fractures the crystalline structure of a metal surface. The process improves corrosion resistance, removing layers to reveal a stress-free surface with the desired smoothness and luster while increasing passivity.
Electropolish in 6 Simple Steps
1. Alkaline Cleaning
First, your metal will need to be cleaned. We recommend using a NuGenTec specially formulated alkaline cleaner.
After the i316al alkaline cleaning, rinse with DI Water.
2. Acidic Cleaning
Next, your metal will need an acidic treatment to remove scale and oxides. We recommend the following specially formulated acidic cleaners:
- NuBrite C 35, 50 or NuWet DS 105 for ferrous alloys.
- NuEtch 316 for Titanium alloys, 316nol and Ti6Al4V
- NuEtch Ti-Au for Titanium-Gold alloy
After this acidic cleaning, rinse with DI Water.
3. Wick Away Water
Now, remove any residual water using a quick isopropyl alcohol rinse.
4. Electropolish
Use NuGenTec's EP 316 to electropolish and leave a microscopically smooth surface. After electropolishing, rinse with DI Water.
5. Passivation (Optional)
Dip the part in nitric acid for passivation, then rinse with DI Water.
Note: Passivation is an optional step, as an oxide layer will reform naturally.
6. Hot Rinse and Dry
Perform a final hot rinse with DI water and forced hot air drying.
Why Use NuGenTec EP 316?
NuGenTec's EP 316 is proven to leave smooth microfinishes every time while remaining less costly than competitors. NuGenTec's EP 316 does NOT require cryogenic cooling, and is less hygroscopic than conventional electropolishing solutions, allowing for longer bath life. Unlike mechanical finishing, electropolishing with EP316 leaves will not smear, bend, stress or fracture the crystalline metal surface to and achieves microscopic smoothness and desirable luster.
NuGenTec: Redefining Chemistry
If you are seeking healthier, more environmentally responsible, and less costly alternatives for your industrial processes, contact NuGenTec today. Learn more about electropolishing with EP 316 here.
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