Silver Plating
Alodine (Chromate Conversion Coating) Services by Shree Kamakshi Industries
Alodine treatment is a chemical process applied to aluminum surfaces. Unlike electroplating, it is a chemical conversion coating—it reacts with the aluminum to form a thin, inert, protective film that is actually part of the original metal surface. The process typically uses chromium compounds (either hexavalent or the more modern, environmentally preferred trivalent chromium) to create this passive layer. The final appearance is usually clear, golden, or brown.
Key Benefits
Alodine treatment is indispensable for aluminum components due to these key advantages:
Exceptional Corrosion Resistance: It provides an excellent barrier against moisture and atmospheric corrosion, significantly protecting aluminum components without adding much weight.
Superior Paint Adhesion: It is one of the best pre-treatment methods for aluminum surfaces intended for powder coating or painting. The conversion layer offers a surface that chemically bonds well with organic finishes.
Maintains Electrical Conductivity: Crucially, certain Alodine classes (like the clear/Class 3) offer corrosion protection while preserving the electrical conductivity of the aluminum, essential for grounding and electronic assemblies.
Dimensional Integrity: Because the coating is extremely thin, it does not alter the dimensions of the component, making it ideal for parts with tight tolerances.
Applications
Aerospace and Defense: Components and structures requiring high corrosion resistance and minimal weight, often specified under military standards.
Electronics: Aluminum chassis, enclosures, heat sinks, and rack mounts where both corrosion protection and electrical grounding must be maintained
Automotive: Aluminum body panels and internal engine components prior to painting.
General Manufacturing: Any aluminum part requiring a foundation for paint or robust, standalone corrosion protection.
Why Choose Us?
For critical aluminum processing, Shree Kamakshi Industries guarantees quality and compliance:
Integrated Preparation: Successful Alodine treatment relies on a meticulously clean surface. We ensure optimal results by utilizing our complete pre-treatment system, including Soapwash and Ultrasonic cleaning, before the Alodine bath.
Process Control for Compliance: We maintain strict control over the bath chemistry, temperature, and immersion time to ensure the coating meets specific mil-spec (military specification) or industrial requirements for thickness and corrosion resistance.
Retention of Conductivity: We understand the technical differences between coating classes and can precisely deliver the finish that retains the required electrical conductivity for electronic applications.
Reliable Partner: As a trusted metal finishing provider since 2012, we offer the technical expertise to process your aluminum components reliably, efficiently, and to the highest standards.