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What is the role of electrolytic polishing?

October 30, 2023

What is the role of electrolytic polishing?

Electropolishing is a surface treatment method that removes material from the surface of a metal workpiece by applying an electric current in an electrolyte to improve surface quality and gloss. The functions and advantages of electropolishing include:

1. Improve surface quality: Electrolytic polishing can effectively remove defects, oxide layers, rust and irregularities on metal surfaces, thereby significantly improving surface quality. This gives the workpiece a smoother, even and reflective appearance.

2. Improve gloss: Through electrolytic polishing, the surface of the workpiece can obtain a higher gloss. This is useful for applications that require a highly glossy appearance, such as stainless steel products, jewelry, kitchen appliances, etc.

3. Remove oxidation and corrosion: Electrolytic polishing can effectively remove oxides and corrosion from the metal surface and restore its original luster and appearance. This is useful for maintaining and repairing metal parts.

4. Improve dimensional accuracy: Electrolytic polishing can be used for minor size and shape adjustments to ensure that the workpiece meets specification requirements.

5. Lower friction coefficient: The polished metal surface usually has a lower friction coefficient, which helps to reduce friction loss and improve the wear resistance of the workpiece.

6. Improved coating adhesion: The metal surface after electropolishing usually has better adhesion, making it easier for coating, spraying or bonding materials to adhere and remain on the workpiece surface.

7. Remove welding slag and welding marks: Electrolytic polishing can effectively remove welding slag, welding marks and unevenness produced during metal welding.

8. Automation: Electropolishing can be performed automatically, thus saving labor and time costs. This is very advantageous for mass production and complex workpieces.

Although electropolishing has many advantages, care needs to be taken to ensure safety and environmental protection, as the electrolyte and wastewater can be hazardous to the operator and the environment. Electrolytic polishing usually requires strict control of current density, electrolyte composition and treatment time to ensure that the obtained surface effect meets the requirements.

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