The Electropolishing Process

Electropolishing is an electrochemical process that is used to remove material at a controlled rate from the surface of stainless steel. Electropolishing improves microscopic imperfections, enhances aesthetics, deburrs parts, and makes parts easier to clean. Additionally, Electropolishing provides passivation by removing free iron and contaminants resulting from manufacturing. This video will help to explain how electropolishing works and the steps of the electropolishing process.
Learn more at neelectropolishing.com/resour...

[@hopefullysoonaweldingengineer]

Thank you for that beutiful, informative series. I am sorry if that sounds a bit dumb question but I am trying to understand the fundemental. As far as I understand from those video you are removing the free Fe atoms on the surface. Now the surface has little openings on the oxide layer where below those little openings the alloy metal. Those place became opened becaue you removed some (non oxide-just Fe atomor other things). Please sorry for my English, I am not a native and I am trying to exaggerating some to emphasize better. Now my question is: Are you closing that opening with chromium oxide layer in your bath or it is closed individually immediately after you pull it from the bath. (Natural passivation). I hope I'm not rude to ask your know how.

[@zakwanarif]

What is the function of the heater?

[@brookerodriguez3993]

Speeds up the reaction time, and I've found also decreases the resistance between the electrodes. As a result of this, the material removal rate is increased, and oftentimes the quality of the polish will increase (best to find a balance as well as cost-benefit). EP also doesn't work very well with the standard solutions at RT. I use a salt solution for my polishing as it helps me keep the temperature down significantly with sensitive parts.

[@TDPEquinox]

heats it up

[@bendustin7609]

Did you just say positive and negative current?