A chemical anodizing machine is specialized equipment designed to produce oxide films on metal surfaces through chemical reactions without the need for an external power supply. The core principle relies on chemical oxidizing agents (e.g., chromic acid, nitric acid, hydrogen peroxide) reacting with metals—primarily aluminum, magnesium, zinc, and their alloys—to form a dense, uniform oxide layer, typically 5–30 μm thick. It is widely used in light industry, hardware, decorative, and electronics sectors, suitable for products such as small hardware components, decorative accessories, and simple electronic parts that require surface protection and basic decoration.
Core Components of a Chemical Anodizing Machine：
Reaction Tank System – The core unit, including:
Corrosion-resistant reaction tanks (PP or PVC), compatible with different oxidizing agents,Temperature control devices to maintain reaction temperatures between 20–50°C, preventing overly fast or slow reactions, and Agitation components to ensure uniform oxidant concentration and consistent film formation.
Pre-treatment System – Involves degreasing (removing oil and grease) and acid cleaning (removing oxides and impurities) to ensure a clean workpiece surface, providing an ideal substrate for oxidation.
Post-treatment System – Includes rinsing (removing residual oxidants to prevent corrosion), sealing (hot water or salt solution sealing to enhance corrosion resistance), and low-temperature drying to protect the oxide layer.
Control System – Operated via PLC and touchscreen, enabling real-time monitoring of reaction time, temperature, and oxidant concentration, with support for preset parameters to ensure stable production.
Key Advantages
No external power required, with a simple structure and low energy consumption, making it ideal for small- and medium-sized enterprises.
Highly adaptable to complex workpiece shapes, capable of processing small and intricate components without anodizing blind spots.
Easy operation and low maintenance costs.
Produces an oxide layer with basic corrosion resistance and decorative properties, meeting the surface treatment needs of mid- to low-end products.
The chemical anodizing machine is therefore a commonly used, lightweight, and cost-effective solution for metal surface protection.
