FAQ's Electropolishing Stainless Steel WeldsNew England Electropolishing
We’re often asked if electropolishing removes the “heat tint” left on stainless steel fabrications due to welding.
Will the electropolishing process clean welds?
The answer is no. To help remove the heat tint or discoloration associated with welding, we subject parts to a descaling cycle (often called “pickling”) in order to loosen up and remove the heat scale.
We then electropolish (EP) the parts, which improves the surface finish, including the weld joint, and gives parts a chrome-like appearance and finish without the high costs and environmental disadvantages of chrome plating.
Can we passivate our welded parts without electropolishing?
Yes, you can. As part of the EP process, parts are naturally passivated, meaning the free iron, which promotes aggressive corrosion, is removed. However, passivation can be accomplished without EP.
To passivate, welded parts are cleaned and the heat tint, oils, dirt, etc. are removed. Parts are then subject to a Nitric Acid bath, which adds a passive layer to the parts but doesn’t change the surface finish. This means the now passivated parts look the same coming out of the bath as they did going in.
What are the benefits of electropolishing welded stainless steel parts?
Electropolishing offers a number of benefits including:
- Removes elemental or free iron from the surface – dramatically improving resistance to corrosion.
- Removes stressed or disturbed layers of surface metal caused by welding, cutting, or mechanical finishing.
- Provides the most superior form of passivation.
To learn more about passivation, see our Electropolishing FAQs.
Electropolishing, Reverse Plating & Passivation Explained
Electropolishing is normally used to remove a very thin layer of material on the surface of a metal part or component...
FAQ's Electropolishing Stainless Steel Welds
We’re often asked if electropolishing removes the “heat tint” left on stainless steel fabrications due to welding...
Working With Us FAQ's
Learn answers to questions regarding the alloys we process to how to set up an account with our company...
Removing Burrs From Threaded Parts
One challenge manufacturers face is removing burrs from threaded stainless steel parts, such as bone screws, instruments and medical devices...
Free sample part electropolishing
Send us your sample part and we'll electropolish it and return it to you with a project quote and delivery schedule - no charge.
800.672.6616 or 508.672.6616
220 Shove Street Fall River MA 02724
Our office hours are 8:00 AM to 5:00 PM Monday through Friday. We do answer our phone, so please don’t hesitate to call!