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»About Electropolishing

Electropolishing is an expanding industry ideal for polishing & deburring Ferrous & Non-Ferrous Metals. See our list of standard metals suited for the Electropolishing process.

Electropolishing systems work by smoothing, polishing, and deburring metal surfaces in an electrolytic bath. This process selectively removes high points on the metal surface while producing a uniform high luster on the metal surface.

In practice, a metal part is immersed in a liquid media and subjected to direct current. The metal part is made anodic (+) and a metal, usually lead, copper, or stainless steel, is made cathodic (-). The direct current flows from the anode to the cathode, removing metal ions at a controlled rate. The amount of metal removed is dependent upon the specific bath, temperature, speed, and particular alloy being electropolished.

Unlike conventional mechanical finishing systems, this process does not smear, bend, stress or fracture the crystalline metal surface to achieve smoothness or luster. Instead, electropolishing removes metal from the surface producing a unidirectional pattern that is stress and occlusion-free, microscopically smooth, and often highly reflective. In addition, improved corrosion resistance and passivity are achieved on many ferrous and some nonferrous alloys. This same process is used for micro- and macro-deburring, as this reverse plating process selectively removes metal ions from the high points on the surface without etching it.

Note: Steven Douglas Corp (SDC) is not an electropolishing or metal finisher, and does not offer electropolishing services.

Use our Contact Us page to discuss the EP10 for your specific electropolishing application.