Electroplating Oxidation Production Line for Automotive Hardware Industry

Equipment Description:

I. Process flow

1. Pretreatment stage:
Ultrasonic degreasing → Chemical roughening → Activation → Water washing;

2. Electroplating stage:
Chemical copper plating (bottom layer) → Electroplated copper (10-20μm) → Semi-bright nickel (5-15μm) → Post-treatment (passivation, drying);

3. Post-treatment: Water washing → Hot air drying (80-120℃) → Automatic material collection.

2. Technical parameters

Production capacity: Single line daily processing capacity 500-3000 pieces (depending on the workpiece size and coating thickness);

Coating accuracy: Thickness deviation ≤5%, corrosion resistance reaches CASS test for more than 48 hours;

Current range: Copper plating 1-3A/dm², nickel plating 2-5A/dm²;

Applicable substrates: Metal parts (such as auto parts), engineering plastics (ABS, PC/ABS alloy), etc.

3. Design features

Modular expansion: supports rack/roller plating mode switching, can add plating tanks or adjust station layout;

Energy saving and environmental protection: pulse rectifier power supply saves 20%-30% energy, acid mist collection tower purification efficiency ≥95%, wastewater reuse system reduces pollution;

High compatibility: adapt to copper, nickel, chromium, alloy and other plating types to meet the needs of automobile, electronics, hardware and other industries.

4. Application scenarios

Automotive industry: hard chrome plating of shock absorbers, multi-layer nickel plating of motorcycle accessories;

Electronic devices: connectors and terminals are copper-nickel plated (anti-electromagnetic interference, wear-resistant);

Decorative parts: imitation gold plating of bathroom accessories, high-gloss nickel-chrome plating of home appliance shells.

Main structures and components:

1. Pretreatment system

1. Ultrasonic cleaning machine is equipped with multi-stage spraying (degreasing → pickling → water washing), using UPVC nozzles and drainage system to ensure the surface cleanliness of the substrate reaches 5μm;
Some models integrate a rotating throwing mechanism to improve the cleaning effect of complex workpieces.
2. Chemical roughening and activation tank roughens the surface of the substrate through acid or chromic acid solution to form a microporous structure to enhance the adhesion of the coating;
Palladium salt/silver ammonia activation tank catalyzes the surface to form an active metal layer, providing reaction sites for subsequent electroplating.

2. Electroplating system

1. Copper/nickel plating tank group The tank body is made of acid and alkali resistant PP or 316L stainless steel, equipped with a suspended anode (titanium basket loaded with copper balls and nickel blocks) and a dot matrix electrode layout, with a current density distribution deviation of ≤5%;
Supports automatic parameter adjustment (calculate current and time after entering the workpiece size), with liquid level alarm and circulation filtration system (filtration accuracy ≤5μm).
‌2. Rollers and hangers ‌German Simona-PP material rollers (aperture φ1.2-5mm) or self-locking chuck hangers are suitable for barrel plating/hanging plating mode to ensure uniform coating coverage;
Some hangers have built-in rotating mechanisms and support 360° flipping to improve the electroplating quality of complex parts (such as automotive parts).

3. Conveying and lifting system ‌ ‌

1. Gantry cranes and tracks are driven by chains or nylon reinforced belts, with a lifting capacity of 50-990kg and a positioning accuracy of ≤1mm;
Support vertical lifting + circular track operation, adjustable beat time (28-60 seconds/station), and adaptable to multi-process switching.
‌2. Automated conveyor lines ‌Linear or circular layout, continuous feeding, slot-hopping operation and fault interruption memory functions are achieved through PLC control.

4. Control system

1. The PLC+HMI integrated module touch screen sets the current density (1-5A/dm²), temperature (±1℃) and time parameters, and monitors the pH value and circulation status of the plating solution in real time;
Supports fault self-diagnosis, production report generation and remote monitoring to improve equipment stability.
2. Temperature control and power supply system PID algorithm adjusts the plating solution temperature (normal temperature -70℃), with pulse rectifier power supply (energy saving 20%-30%);
Constant current/constant voltage mode can be switched to ensure the coating thickness accuracy of ±0.5μm.

5. Auxiliary system

1. Environmental protection treatment device Acid mist collection tower (purification efficiency ≥95%) + classified wastewater reuse system to meet environmental emission standards;
The closed tank design reduces the volatilization of the liquid and reduces environmental pollution.
2. The safety protection module is equipped with anti-collision sensors, emergency stop buttons and leakage protection devices to ensure the safety of human-machine collaboration.
‌Key design features‌
‌Modular expansion‌: supports switching of plating types (such as copper-nickel alloy, imitation gold plating) and expansion of production lines (adding new plating tanks or workstations);
‌High compatibility‌: adaptable to a variety of substrates such as metal parts (auto parts), engineering plastics (ABS, PC/ABS);
‌High efficiency and stability‌: single-line daily production capacity of 500-3000 pieces, yield rate ≥98%.

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.