Alocrom 1200 Process:
Alocrom 1200 is a well-established chromate conversion coating process used primarily on Aluminium alloys. It enhances the corrosion resistance of aluminium, and it is often used when the aluminium is to be painted or powder coated. Alocrom 1200 is a non-chromium- based coating process (though still a form of chromate conversion) that is highly regarded for its environmental benefits and performance.
Alocrom 1200 Process steps:
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Pre-treatment Cleaning: The aluminium surface is cleaned thoroughly to remove any oils, grease, dirt, or other contaminants that might interfere with the coating process. This is typically done using an alkaline degreasing solution or a solvent cleaning method.
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Rinsing: After cleaning, the aluminium parts are rinsed with water to ensure that no cleaning chemicals remain on the surface.
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Alocrom 1200 Application: The cleaned aluminium parts are immersed in the Alocrom 1200 solution, which is a liquid chemical treatment composed primarily of phosphoric acid. This treatment creates a thin, clear, or slightly yellow chromate conversion coating on the surface. This layer is integral for both corrosion resistance and adhesion promotion for subsequent coatings, such as paint or powder coatings.
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Reaction and Coating Formation: During immersion, the chemical reaction forms an inert oxide layer on the aluminium. This layer bonds with the metal, creating a durable protective coating that helps protect against corrosion.
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Rinsing and Drying: After the coating is applied, the parts are rinsed thoroughly to remove any excess solution and dried, leaving the aluminium with a corrosion-resistant surface that is primed for further treatment or coating.
Key benefits of Alocrom 1200
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Corrosion Resistance: The primary benefit of the Alocrom 1200 coating is its enhanced corrosion resistance, especially in harsh environments like marine and industrial applications.
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Surface Preparation for Coatings: It provides an excellent bonding surface for paint and powder coatings, increasing the adhesion and longevity of these finishes.
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Environmental Compliance: Alocrom 1200 is a more environmentally friendly alternative to traditional chromate-based coatings, offering the same benefits without the use of hexavalent chromium.
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Durable Coating: The thin, but tough, oxide layer created by Alocrom 1200 significantly enhances the durability of the treated aluminium parts, especially in challenging conditions.
Applications of Alocrom 1200
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Aerospace: Used to prepare aluminium for further treatments and to ensure parts can withstand harsh environmental conditions.
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Automotive and Transport: For parts exposed to the elements, such as body panels, frames, and other components requiring enhanced corrosion resistance.
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Construction and Architecture: For aluminium components such as window frames and facades, where both corrosion resistance and strong adhesion for paint are necessary.
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Electronics: For ensuring that components have good corrosion resistance and adhesion properties for surface finishes.
Surtec 650V Process:
Surtec 650V is a modern, chromium-free conversion coating process used primarily on aluminium and aluminium alloys. Surtec 650V provides high-quality corrosion protection and enhances the surface’s ability to bond with paints, adhesives, and other coatings. It is particularly well-regarded in industries where environmental impact is a concern, as it does not use harmful hexavalent chromium compounds.
Surtec 650V Process steps:
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Pre-treatment Cleaning: Like Alocrom 1200, the first step is thorough cleaning to remove any contaminants, including oils, dirt, and grease. This is usually done with a degreasing solution or solvent cleaning method to ensure the surface is pristine.
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Rinsing: The aluminium is then rinsed to remove any remaining cleaning agents.
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Surtec 650V Application: The parts are then immersed in the Surtec 650V solution, which typically contains inorganic compounds, such as zirconium and titanium-based compounds. This treatment forms a protective layer that binds to the metal, providing both corrosion resistance and improved adhesion for coatings.
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Coating Formation: The Surtec 650V process creates a thin, transparent conversion coating that adheres tightly to the surface of the aluminium, forming a protective barrier against corrosion. This layer can be slightly tinted, but it remains generally transparent.
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Rinsing and Drying: Once the coating is applied, the parts are thoroughly rinsed to remove any excess solution, then dried.
Key benefits of Surtec 650V
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Chromium-Free: Surtec 650V is a completely chromium-free alternative to traditional chromate conversion coatings, making it an eco-friendly choice that complies with modern environmental standards, such as RoHS (Restriction of Hazardous Substances).
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High Corrosion Resistance: It provides excellent corrosion resistance, making it ideal for use in harsh environments, including marine and industrial applications.
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Superior Adhesion: The coating creates a highly effective bonding surface for paints, powder coatings, and adhesives, ensuring long-lasting finishes.
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Excellent Durability: Surtec 650V enhances the longevity of aluminium parts by providing a protective layer that resists scratching and wear.
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Non-Toxic and Environmentally Safe: The process uses zirconium and titanium- based compounds, which are safer and less harmful to both the environment and the workers compared to traditional chromate-based treatments.
Applications of Alocrom 1200
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Automotive: Surtec 650V is commonly used on automotive components, where excellent corrosion protection and adhesion for subsequent coatings are crucial, particularly in parts exposed to road salts and chemicals.
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Aerospace: It is used in the aerospace industry for aluminium parts that require a non-chromium-based protective coating for environmental compliance without compromising performance.
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Marine: Surtec 650V is ideal for parts that are exposed to harsh, saltwater environments, providing long-lasting protection against corrosion.
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Architectural: Aluminium components in the construction industry, such as frames and trims, are treated with Surtec 650V to ensure both aesthetic appeal and long- term durability.
Why Choose Majestic Aluminium Finishing Ltd for Alocrom 1200 and Surtec 650V?
Experienced Technicians: Our team at Majestic Aluminium Finishing Ltd is highly experienced in handling both Alocrom 1200 and Surtec 650V treatments, ensuring optimal results for every project.
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Custom Solutions: Whether you need specific corrosion resistance for your application or are seeking a reliable coating for enhanced adhesion, we can tailor the treatment process to suit your exact needs.
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Quality Assurance: We employ strict quality control processes to ensure that each part treated with Alocrom 1200 or Surtec 650V meets the highest standards of performance and appearance.
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Environmental Responsibility: We are committed to using environmentally friendly processes, such as Surtec 650V, which ensure our services meet the latest environmental regulations.
Both Alocrom 1200 and Surtec 650V are effective, high-quality treatments that provide aluminium components with superior corrosion resistance and the ability to bond securely with paints and other coatings. Whether you're working in the aerospace, automotive, marine, or architectural industries, our services can help ensure the longevity, durability, and visual appeal of your aluminium parts.