Intelligent and Environmentally Friendly Electroplating Oxidation Production Line for Coating Process

Equipment Description:

I. Process flow ‌
‌1. Pretreatment‌: ultrasonic degreasing → alkaline etching → neutralization → pure water washing.
‌2. Oxidation-electroplating composite treatment‌: anodic oxidation (sulfuric acid electrolysis, 15-20V, 30-60 minutes) → water washing → electroplating (nickel plating/chromium plating, current density 2-4A/dm², time 10-30 minutes).
‌3. Post-treatment‌: sealing → pure water washing → drying → quality inspection (salt spray test ≥1000 hours).

‌II. Technical parameters‌
‌Processing capacity‌: single-line monthly production capacity ≥50 tons (calculated at 8 hours/day).
‌Coating performance‌: oxide film hardness ≥300HV, thickness error ≤±2μm.
The bonding strength of the electroplating layer (cross-cut method) meets the ASTM B571 standard, and the porosity ≤5 pieces/cm².
‌Energy consumption‌: DC power consumption ≤500kWh/ton, steam consumption ≤0.8 tons/ton.

‌III. Intelligent and environmentally friendly design‌
‌1.Automatic control‌: Touch screen human-machine interface, supports process recipe storage and one-button switching.
Robot spraying module (optional): Identify the size of the workpiece and automatically adjust the angle and distance of the spray gun.
‌2. Environmental protection treatment‌: Wastewater treatment: membrane filtration + ion exchange technology, heavy metal removal rate ≥ 99%.
Waste gas treatment: two-stage alkali solution spraying + activated carbon adsorption, VOC emission ≤ 50mg/m³.

Main structures and components:

I. Pretreatment system ‌
‌1. Cleaning unit ‌
‌Ultrasonic cleaning tank‌: Multi-stage water washing (city water + pure water) removes oil and particulate matter on the workpiece surface, and the cleanliness reaches Sa2.5 standard. ‌Alkali etching tank‌: Use NaOH solution (concentration 50-100g/L) to chemically corrode the surface of the aluminum substrate to eliminate the oxide layer and microscopic unevenness. ‌Neutralization tank‌: Nitric acid/sulfuric acid mixture neutralizes residual alkali solution and activates surface activity. ‌2. Auxiliary equipment ‌
‌Filter circulation device‌: Real-time filtering of impurities in the cleaning solution to extend the service life of the solution. ‌II. Core processing system ‌
‌II. Anodizing unit ‌
‌Electrolytic tank‌: PP/PVC tank body, containing sulfuric acid/oxalic acid electrolyte, equipped with titanium tube heater and cooling system, temperature control accuracy ±2℃. ‌Power supply system‌: High-frequency pulse power supply (voltage 0-24V adjustable, current density 1-3A/dm²), supports precise control of oxide film thickness 5-25μm. ‌ ‌2. Plating unit‌
‌Hanging plating tank‌: titanium alloy hanger design, suitable for zinc, nickel, chromium and other plating types, coating thickness accuracy ±0.5μm.
‌Roller plating tank‌ (applicable to small parts): PP drum loading workpieces, double-sided uniform electroplating, cycle time ≤3 minutes/hang.
‌DC regulated power supply‌: current density 2-4A/dm², supports multiple plating types switching.

‌III. Post-processing system‌
‌1. Sealing and drying‌
‌Sealing tank‌: nickel salt or high-temperature steam (95-100℃) sealing process to improve the sealing and corrosion resistance of the oxide film.
‌Drying furnace‌: hot air circulation device (80-120℃), segmented temperature control to prevent coating cracking.
‌2. Quality inspection unit‌
‌Salt spray test equipment‌: verify the corrosion resistance of the coating (≥1000 hours).

IV.conveying and automation system‌
‌1. Conveying equipment‌
‌Gantry crane‌: double-track design, horizontal speed 4-40m/min, supports multi-station collaborative lifting.
‌Hanging system‌: titanium alloy/aluminum alloy material, corrosion-resistant and stable conductivity.
‌2. Intelligent control‌
‌PLC control module‌: integrated Mitsubishi/Omron controller, real-time monitoring of 200+ parameters (current, temperature, liquid level, etc.), fault response time ≤5 seconds.
‌Touch screen interface‌: supports process recipe storage and one-key switching to achieve production data visualization.

V. environmental protection and energy system‌
‌1. Wastewater treatment‌
‌Membrane filtration + reverse osmosis device‌: heavy metal removal rate ≥99%, wastewater reuse rate ≥80%.
‌2. Waste gas treatment‌
‌Alkali spray tower + activated carbon adsorption‌: VOC emission ≤50mg/m³, in line with GB16297 standard.
‌3. Energy recovery‌
‌Waste heat utilization device‌: Recover the waste heat of the curing furnace to preheat the cleaning water, reducing steam consumption by ≥30%.

Features:

1.High cost performance: Based on the customer's product positioning and development strategy, and with economic affordability as the foundation, we achieve the best cost performance.
2.The advanced and meticulous design concept of the equipment, along with the highly automated industrial equipment, showcases the image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production requirements and reserving room for development, taking into account the needs of increased production and improved quality in the future.
4.Quality compliance strictly adheres to the ISO900 quality management system, with every minute detail of the entire equipment installation being strictly controlled.