Custom metal fabrication with Metko delivers quality and precision. With tight tolerances and on-time delivery, we provide unique product configurations, standardized products, and premium showcase pieces.

Metko specializes in fabrication of 1/4″ and lighter sheet metal, with capabilities to cut up to 1-1/8″ thick. Our metal fabrication equipment is high tech, leading-edge, and lets us manufacture almost any shape.

Electropolishing is essential when it comes to components requiring a smooth, polished surface that enhances both the functionality and aesthetics of both finished metal components and those to be further refined. But when is electropolishing needed, comparing electropolishing cases to other similar processes to smooth out materials?

Understanding Electropolishing Cases

Before exploring where and when electropolishing is needed, it is important to understand the definition of electropolishing first:

Electropolishing is an electrochemical process that removes a thin layer of material from a metal surface, like sanding or belt grinding, but through an electric-chemical process that both cleans and polishes the workpiece, resulting in a mirror-like finish that mechanical processes cannot fully replicate.

When is Electropolishing Needed?

When it comes to electropolishing cases, a few unique markers call for the use of this unique electrochemical process.

  • Surface Finish and Aesthetics: When parts require a shiny, quality surface, electropolishing is the go-to method. The electropolishing process produces a highly reflective, smooth, wear-free surface that is visually appealing and can reduce friction and overall wear.
  • Corrosion Resistance: In cases where enhanced corrosion resistance is crucial, electropolishing is essential in order to remove lingering surface contaminants and imperfections that can lead to corrosion, errors in the painting process, or functional problems when installed as part of a mechanism.
  • Micro-deburring: When components are milled or processed in even the most complex of manufacturing environments for precise tolerances and no sharp edges, electropolishing is required to clean the piece by removing microscopic burrs and imperfections invisible to the naked eye which could interfere with further processing or functionality of the part.
  • Cleanability: In industries where clean components are essential, such as in semiconductor manufacturing, medical devices, high-tech machinery parts, or other decimeter-accurate fields, electropolishing is essential to clean and sterilize surfaces, turning them into polished pieces that resist bacterial growth, overheating, and work wear.

Does Electropolishing Remove Material?

Does electropolishing remove material? The answer is yes; electropolishing removes a thin material layer from a metal surface. This removed material is typically in the range of 0.0001 to 0.002 inches, depending on the final product’s process parameters, workpiece, and desired finish. This precise removal method gives electropolished parts a superior finish and functionality all while removing a negligible layer of material that won’t interfere with most industrial designs.

Electropolishing Cases Across Industries

Electropolishing is utilized in industries worldwide that require precise components, including the medical field, for example. The medical field requires well-smoothed surgical instruments and implants, which often undergo final electropolishing to free them of contaminants and offer a smooth surface that won’t conflict with the body or harbor bacteria.

Another of many electropolishing cases, the aerospace field, calls for electropolished components to improve wind resistance, reduce fatigue, and ensure optimal performance in critical applications like landing gear.

When is Electropolishing Needed? Often!

Whether your electropolishing cases are for aesthetic purposes, corrosion resistance, micro-deburring, cleanability, or a combination of many processing factors, electropolishing carries varied benefits that make it an essential process in most applications.

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