Electrophoresis

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Electrophoresis

Definition and Function

Electrophoresis is a surface treatment process in which a coating material is uniformly deposited onto a metal surface under an electric field. This process significantly enhances corrosion resistance and adhesion and is commonly used as a base treatment before painting or powder coating.

Colors

White

Transparent

Gray

Black

Depending on the material type, the coating can be black, gray, white, or transparent

Smooth and uniform finish with minimal impact on part appearance

Example of a bead-milled + anodized colored part

Technical Properties

Corrosion Resistance	Adhesion	Surface Uniformity	Applicable Materials
Forms a dense protective layer, effectively improving metal durability	Coating is firmly bonded and resistant to peeling	Ensures consistent coverage on parts with complex shapes	Steel, aluminum and its alloys, and other metals

Applicable Materials

Metals: Aluminum Stainless Steel Brass Copper Titanium Mild Steel Alloy Steel Tool Steel Spring Steel

Process Characteristics

Controllable coating thickness, typically 5–25 μm

Strong adhesion, capable of covering complex geometries

Environmentally friendly, compliant with RoHS and other environmental regulations

Compatible with subsequent painting, powder coating, or finishing processes