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Professional Zinc Alloy Surface Finishing Solutions

Plating color

Plating color - image 1

Rack plating color

Plating color - image 2

1-Decoration & Value-adding Diverse colors match bag designs, enhance product grade, and meet customization needs. 2-Corrosion Protection Plating layers isolate substrates from air and moisture, prevent rust, and extend service life. 3-Performance Enhancement Hard chrome plating boosts wear resistance; tin plating improves conductivity for special hardware. 4-Identification & Management Colors distinguish sizes/models, facilitating production sorting and warehouse management.

1. Process Flow Chart

Plating color - image 3

2. Process Video

3. Process Details

1. Alkaline Copper Tank

1. Alkaline Copper Tank

The alkaline copper plating tank is a core process unit that performs copper plating on workpieces using an alkaline electroplating solution, and it is primarily applied for undercoat preparation prior to subsequent plating procedures.

2. Alkaline Copper Automatic Waterline

2. Alkaline Copper Automatic Waterline

1. Hanging 2. 4 times Cleaning Tank 3. Neutralization Tank 4. 2 times Cleaning Tank 5. Unhanging

3. Acid Copper Tank

3. Acid Copper Tank

The acid copper plating tank is a process unit that conducts copper plating on workpieces with acidic electroplating solution. Usually following the alkaline copper undercoating process, its core functions are to improve coating flatness and increase the thickness of the copper coating.

4. Acid Copper Automatic Waterline

4. Acid Copper Automatic Waterline

1. Hanging 2. 3 times Cleaning Tank 3. Neutralization Tank 4. 3 times Cleaning Tank 5. Unhanging

5. Shiny Nickel Tank

5. Shiny Nickel Tank

1、Nickel-containing Plating Low cost with higher luster than nickel-free plating, but not eco-friendly. 2、Nickel-free Plating High cost with slightly lower luster, yet eco-friendly and safe. It is ideal for high-end products and jewelry items (e.g., necklaces, ear studs). 3、Applying nickel-containing or nickel-free plating as a base before subsequent color plating can enhance the final coating’s luster and adhesion. For this reason, high-end clients generally opt for nickel/nickel-free plating prior to further color finishing.

6. Three times Cleaning Tank

6. Three times Cleaning Tank

Remove residual liquid on the workpiece surface.

7. Color Tank

7. Color Tank

At this stage, choose the plating tank matching your target color. such as: Rose Gold Tank Light Gold Tank Gun Color Tank Pearl nickel Tank

8. Recycling Tank

8. Recycling Tank

1、Recycle Valuable Metals & Cut Costs 2、Reduce Waste Discharge & Meet Environmental Standards 3、Clean Workpieces & Ensure Coating Quality 4、Prolong Bath Life & Save Consumables

9. Three times Cleaning Tank

9. Three times Cleaning Tank

Remove residual liquid on the workpiece surface.

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Workshop Planning Data

Plating color — Data Zinc Alloy Finishing Managers Need

The rack plating line handles larger zinc alloy parts, sliders on frames and parts requiring precise current distribution — high-end finishes with zero contact marks and excellent throwing power.

800 m²Workshop Area
26 peopleTeam Size
330 kWInstalled Power
300-600k pcs/dayDaily Output (10 h)

Quality Inspection & Control

Check itemMethodAcceptance standard
Coating thicknessX-ray / coulometricCu 5-12 μm, Ni 5-15 μm per spec
AdhesionBend + thermal shockNo blister at 150 °C × 30 min
Color & glossColorimeter / gloss meterΔE ≤ 1.0, gloss per customer card
Contact marksVisual 10×Zero rack contact marks on A-surface
Salt sprayNSS chamber12-96 h per spec
Throwing powerCross-section microMinimum:maximum thickness ≥ 1:1.6

Workshop Layout & Floor Area

ZoneArea
Rack line (16-20 tanks)320 m²
Rack loading / unloading90 m²
Rectifier & control room50 m²
QA lab + microscope60 m²
Rack maintenance60 m²
Chemical store60 m²
Waste treatment120 m²
Utility & lockers40 m²
Total workshop800 m²

Manpower & Shift Plan

RoleHeadcount
Rack loaders / operators12
Chemical technicians3
QC inspectors3
Rack maintenance2
Wastewater operator1
Supervisor1
Maintenance / electrician2
Logistics2
Total (2 shifts × 10 h)26

Power & Utility Demand

EquipmentDemand
Rectifiers 0-15 V × 1000-3000 A120 kW
Tank heating / cooling70 kW
Hoist / transporter system30 kW
Pumps / filters / dosing38 kW
Exhaust + scrubber25 kW
Dryer / oven22 kW
Wastewater treatment20 kW
Lighting & auxiliary5 kW
Installed total330 kW
Typical running load≈ 260 kW

Production Flow Chart

PretreatmentHand / barrel polish, degrease
Rack LoadingLoad parts on plated copper racks
Copper Strike & BuildAlkaline Cu → acid Cu
Nickel / Color PlatingBright Ni, gold, gun, black etc.
Rinse ChainRecovery → DI rinse
Dry / Unload / QCOven dry, unload, inspect, pack

Daily Capacity — 10-Hour Operating Day

ParameterValue
Cycle per flight bar35-60 min
Parts per flight bar3,000-8,000
Flight bars per 10 h day14-18
Daily output300,000-600,000 pcs
Monthly output (26 days)8-15 million pcs

Output Value Estimate

ParameterValue
Plating fee per pieceUSD 0.015-0.04
Daily output value (10 h)USD 8,000-18,000
Monthly output valueUSD 210,000-470,000
Annual output valueUSD 2,500,000-5,600,000

Related Products — Complete Plating color Solution

Machines, chemicals and consumables selected from the real QLQ product range for this process. Every product page is live and ready to quote.