Vertical Hard Anodizing Line for Aluminum Bike Frames with 30–50μm Dyeable Oxidation and 350 Tons/Month Capacity

This fully automatic vertical hard anodizing line is professionally developed for mass surface treatment of aluminum bicycle frames. It supports customized 30–50μm thick hard oxide film and compatible dye coloring treatment, meeting high-standard wear resistance, corrosion resistance, and decorative requirements for cycling parts.

Adopting low-temperature hard anodizing technology, the vertical structure ensures uniform current distribution and consistent film thickness on irregular bike frame structures. It effectively solves common defects such as thin coating, uneven oxidation, and poor color uniformity.

With stable automated cycle operation and precise PLC parameter control, the equipment achieves a stable monthly output of 350 tons, fully suitable for large-batch standardized production of various aluminum bike frames.

1. Frame Hanging & Fixing: Professional vertical hanging fixture solution fits special-shaped bike frame structures, ensuring balanced stress and uniform conduction.
2. Degreasing & Deep Cleaning: Remove machining oil, sweat stains and surface impurities to ensure ultra-clean aluminum substrate for high adhesion coating.
3. Alkali Etching & Neutralizing: Uniform frame surface texture and remove natural oxide layer to guarantee consistent oxidation foundation for batch workpieces.
4. Low-Temperature Hard Anodizing: Form dense 30–50μm ultra-hard oxide film under constant temperature and current, improving frame surface strength and durability.
5. Precision Water Rinsing: Multi-stage counter-flow rinsing eliminates residual acid liquid to avoid film damage and ensure pure surface before coloring.
6. Dye Coloring Treatment: Achieve uniform, saturated and colorfast decorative effects with customizable color options for bike frame appearance.
7. Sealing & Curing: Seal oxide micropores to enhance corrosion resistance and color stability, preventing fading and oxidation failure.
8. Constant Temperature Drying: Uniform water-free drying to complete finished bike frame surface treatment.

• 30–50μm Thick & Uniform Hard Film: Custom low-temperature hard oxidation process stably controls 30–50μm film thickness. The ultra-dense coating greatly improves bike frame wear resistance, impact resistance and outdoor weatherability.
• Integrated Oxidation & Coloring Process: Supports hard anodizing and multi-color dye coloring in one line. Solves the problem of poor color uniformity of thick oxide layers.
• Vertical Structure for Irregular Frames: Optimized vertical tank body and hanging mode perfectly fit curved and special-shaped bike frames. No dead-angle oxidation ensures consistent quality.
• 350 Tons High-Efficiency Mass Production: Full-automatic PLC intelligent control realizes unmanned cyclic operation. Stable monthly output meets large-scale order delivery needs.
• Stable Batch Quality & Low Defect Rate: Precise temperature and current closed-loop control ensures zero color difference and stable film thickness in mass production.

• Full-automatic vertical lifting and circulating system
• PLC intelligent centralized control system & touch screen operation panel
• Complete pre-treatment tank group for bicycle frame processing
• Low-temperature refrigeration unit & constant temperature circulation system
• Special hard anodizing tank & high-power rectifier equipment
• Multi-color dye coloring tank & constant temperature sealing tank
• Multi-stage counter-flow rinsing & pure water purification system
• Precision filtration & tank liquid stabilization system
• Hot air constant temperature drying equipment