What’s Electroplating? Definition, How It Works & Applications
Finishing the machined or manufactured components using the appropriate method ensures their longer durability. It is also critical for the...
RapidDirect Metal Electrophoresis Finishing Services
RapidDirect specializes in metal electrophoresis finishing service and can achieve a uniform, glossy, or matte solid appearance with black, white, RAL, and Pantone color options.
What's Electrophoresis?
Electrophoresis coating/e-coating/electro-coating involves immersing a metal part in an electrified tank containing a paint solution. Passing an electric current will deposit the paint, yielding a part with a uniform, glossy, or matte solid appearance.
The paint solution exists as positive or negative ions. On passing an electric current through the solution, the paint migrates and loses electrons at the part surface. It changes to solid paint, leading to its electrophoretic deposition on the part surface.
Electrophoresis surface treatment leads to colors including Black, white, RAL, and Pantone and is a primer coating process for parts used in the automotive and hardware industry.
Electrophoresis Specifications
Advantages of Electrophoresis Surface Treatment
- Uniform and plump coatings
- The electrophoresis paint film has a variety of color options
- Maintain the metallic luster of the metal part
- Enhances the part’s corrosion resistance
- Suitable for parts with tight tolerance
- Compatible with other surface treatment
Notes
- It does not increase the wear resistance of the part surface.
Applications of Electrophoresis Coated Parts
- Automotive: Frames, wheels, and suspension components.
- Electronics: Metal casings
- Medical Devices: Surgical instruments and equipment
- Appliances: Panels and housings
- Construction: Structural steel, metal fencing, and railings.
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FAQs
The longevity of electrophoresis coating typically ranges up to one year, providing effective protection against corrosion and wear. However, this can vary depending on the environmental conditions, exposure to harsh chemicals or UV radiation, and the part’s specific application. Electrophoresis coatings can last longer under milder conditions and proper maintenance
The primary purpose of electrophoretic metal coating is to provide corrosion resistance. The electrophoretic deposition process applies a uniform and protective coating on the metal surfaces, creating a barrier that shields against corrosion caused by environmental factors such as moisture, chemicals, and exposure to harsh elements. Additionally, electrophoretic coatings offer enhanced durability and scratch resistance, improving the longevity and appearance of the coated metal parts.
The main difference between electroplating and electrophoresis lies in the materials involved and the deposition process. Electroplating involves immersing both the substrate and a metal electrode in an electrolyte solution and passing electricity to deposit a layer of the metal on the substrate. In contrast, electrophoresis involves suspending the parts in a water-based solution containing the coating material (often paint or polymer) and then applying an electric current to induce deposition of the coating on the metal parts.
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