Macfab’s precision machining operations are further enhanced by our electropolishing process. Performing this process internally reduces issues that might be caused due to handling and transport, and the vertical integration allows us to deliver finished ready to use parts to our customers.
While tumbling, vibration, and hand deburring are effective processes of deburring and generating marginal improvements in surface finish, electropolishing is a superior method to ensure microscopically precision finish and burr removal for parts – only tight tolerance and precision machining facilities such as MacFab utilize. Electropolishing was developed in the 1950s. During the years since its development, it has also been called electrochemical polishing, anodic polishing and electrolytic polishing.
The Electropolishing Process
Focusing in more detail on the electropolishing process and how it delivers such broad enhancement to parts, the parts are first loaded onto a metallic tree or fixture where they have good electrical contact. The fixture is then connected to the positive side of a Direct Current (DC) circuit making the parts the anode of the reaction. A second metallic plate is submerged in the tank and connected to the negative side of the DC circuit. The tank is filled with an electrolytic solution that is matched to the material of the part – for Macfab that is Stainless Steel. Once the work piece has electricity applied to it, the solution breaks the bonds of the stainless steel atoms. Imagine the burr or high points on the surface of the part have a small bolt of lightning pass through it. What is left is a metallic salt and the parts free of burrs and with improved surface finish at the same time.
Below are a few of the industry standards covering Electropolishing that we at Macfab refer to in developing and controlling our electropolishing process.
Standards for Electropolishing
Electropolishing Specifications for
Passivation of Stainless Steels Using