Blue Chromating – Blue Passivation (SW10025.1) Chemical Passivation and Surface Finishing for Zinc-Plated Metal Parts Short Description The Blue Chromating / Blue Passivation SW10025.1 is a chemical solution for the non-electrolytic treatment of zinc-plated metal parts, producing a blue to dark blue protective passivation layer. This layer provides effective corrosion protection, enhances the appearance of zinc-plated parts, and gives a professional metallic blue finish. The treatment is simple to apply in a dip bath without electricity and is suitable as a finish after galvanic zinc plating. Applications Blue passivation is used for: Surface finishing of zinc-plated parts Aesthetic blue to dark blue coloring Corrosion protection and surface stabilization Finishing after galvanic zinc plating Suitable for hobby, workshops, restoration, and industrial use The color ranges from light blue to deep metallic blue, providing a high-quality visual finish. How it Works (Simple Explanation) Preparation: Ensure the metal part has a sufficient zinc layer (≥ 2 µm). Dip: Immerse the zinc-plated part into the blue chromating bath. Chemical Reaction: Within minutes, a blue passivation layer forms on the surface. Rinse: After reaching the desired color, rinse the part with water and dry it. The color intensity can be adjusted by varying the immersion time. Advantages Easy, non-electrolytic application – no power supply required Chromium(VI)-free – safer and more environmentally friendly than traditional chromating Protects zinc-plated surfaces from corrosion Attractive metallic blue finish for decorative and functional applications Ideal for finishing, restoration, and industrial applications Technical Information PropertyDetails / InformationProduct typeBlue Chromating / Blue PassivationApplicationNon-electrolytic, dip bathSuitable forZinc-plated metal partsColorBlue to dark blue, metallic/iridescentMinimum zinc thickness≥ 2 µm recommendedImmersion timeA few minutes (depending on desired color)TemperatureRoom temperatureChromium(VI)-freeYes Practical Instructions Ensure the zinc layer is sufficiently thick (≥ 2 µm). Dip parts for several minutes depending on desired color intensity. Rinse thoroughly with water and dry after reaching the desired color. Repeat the process for deeper blue shades. Safety Instructions Wear gloves, safety glasses, and protective clothing Avoid contact with skin and eyes Rinse immediately with water if contact occurs Use only in well-ventilated areas Do not ingest; keep out of reach of children Conclusion The Blue Chromating / Blue Passivation SW10025.1 provides a simple, non-electrolytic method to enhance the appearance of zinc-plated parts while improving corrosion protection. Its Chromium(VI)-free formulation makes it safe, environmentally friendly, and modern, ideal for hobbyists, restorers, workshops, and professional applications.

Zinc Electrolyte – Reliable Corrosion Protection Through Electroplating The zinc electrolyte is a professional electroplating solution designed for the deposition of protective zinc coatings on metal surfaces. It is suitable for pen plating, brush (tampon) plating, and bath plating, delivering uniform, corrosion-resistant coatings on steel, iron, and copper-based materials. Zinc is one of the most widely used metals in electroplating, specifically applied to protect components from rust, oxidation, and environmental damage. Key Benefits Effective corrosion protection for steel and iron Uniform, bright zinc coatings with good surface finish Mildly acidic, cyanide-free and ammonium-free → easy and safer handling Suitable for all plating methods (pen, brush, bath) Excellent throwing power for complex geometries Ideal for repair work, restoration, and production use Applications Plating of screws, nuts, and metal components Corrosion protection for steel and iron parts Automotive parts and restoration (e.g. classic cars) Mechanical engineering and metalworking Outdoor components (fences, railings, exposed parts) Compatible Plating Methods Pen Plating – localized repair and touch-up Brush / Tampon Plating – flexible use on complex surfaces Bath Plating – uniform coating for batch production Technical Specifications Electrolyte type: mildly acidic Operating temperature: 15 – 60 °C Voltage: Bath plating: 0.5 – 3.5 V Pen / Brush plating: 3 – 7 V Current density: 0.25 – 2 A/dm² Deposition rate: approx. 0.8 µm/min Anodes: zinc or graphite Suitable Base Materials Iron Steel Copper and copper alloys (Note: Aluminum, chromium, or titanium require special pre-treatment.)  Step-by-Step Instructions – How Zinc Plating Works 1. Surface Preparation (Critical Step) Thoroughly clean and degrease the workpiece Remove rust mechanically or chemically Only clean surfaces ensure proper adhesion 2. Setup Workpiece = cathode (negative pole) Anode = zinc or graphite (positive pole) Electrolyte = zinc solution 3. Plating Process Apply direct current Zinc ions migrate to the workpiece Formation of a uniform zinc coating 4. Process Control Reduce current if excessive gas formation occurs Maintain movement during brush plating Keep voltage and temperature stable Why Zinc Is So Effective Zinc acts as a sacrificial metal (anodic protection): It corrodes first and protects the underlying base material. Result: Extended component lifespan Reliable rust protection High resistance to environmental exposure Typical Coating Functions Corrosion protection layer Sacrificial (anodic) protection Base layer for further coatings Functional protective coating Safety Information Avoid contact with skin and eyes Use protective gloves and goggles Ensure proper ventilation Dispose of according to local regulations Conclusion – Essential Electrolyte for Corrosion Protection The zinc electrolyte is one of the most important solutions in electroplating, especially when it comes to durability, corrosion resistance, and cost efficiency. It offers: Reliable rust protection Simple and flexible application Professional results for both beginners and industrial users  Ideal for anyone looking to protect and enhance metal surfaces efficiently and long-term.