Zinc Electroplating
A uniform layer of pure zinc that protects ferrous substrates without compromising threads, tight tolerances or surface quality.
PROCESS PRINCIPLE
Cathodic protection with dimensional control.
ASTM B633 sets the requirements for depositing metallic zinc onto iron or steel by electrodeposition. The result is a regular film that provides sacrificial protection and a clean finish on precision components.
In an acid or alkaline electrolytic bath, the part acts as the cathode. Pure zinc anodes dissolve under direct current and the ions transfer in a controlled way until the specified thickness is built up.
After deposition we apply a clear or blue passivate based on trivalent chromium compounds. The resulting “bright zinc” is attractive, slightly bluish and suitable for indoor use or low to medium corrosivity environments.
TECHNICAL SEQUENCE
From clean steel to bright zinc.
Preparation
Substrate cleaning and activation
Electrodeposition
Ionic transfer under direct current
Passivation
Clear or blue trivalent conversion
Inspection
Thickness, appearance and conformity
PROCESS SAMPLES
Zinc electroplating finishes.
Reference images optimised in WebP and presented at a scale that preserves their sharpness.
Fasteners and screws
Bright zinc across a range of geometries and diameters.
Machined components
Uniform coverage on parts with threads and cavities.
Visual finish control
Clear surface reading under inspection lighting.
Surface uniformity
Continuous finish on stamped parts, bends and edges.
ENGINEERING APPLIED TO YOUR PROJECT
Need zinc electroplating for your project?
Send us specifications, quantities and exposure conditions. Our technical team will help you define the right system.