Professional Zinc Alloy Surface Finishing Solutions
Color Paint
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Workshop Planning Data
Color Paint — Data Zinc Alloy Finishing Managers Need
The painting line applies primer and topcoat by barrel spraying, rack spraying or cold spraying, then bakes to a durable finish with 100+ h salt spray, covering zinc alloy hardware in any RAL color.
600 m²Workshop Area
20 peopleTeam Size
220 kWInstalled Power
400-900k pcs/dayDaily Output (10 h)
Quality Inspection & Control
| Check item | Method | Acceptance standard |
|---|---|---|
| Film thickness | Coating thickness gauge | Primer 15-25 μm; topcoat 20-35 μm total 40-60 μm |
| Color match | Colorimeter ΔE | ΔE ≤ 1.0 vs approved RAL master |
| Adhesion | Cross-cut + tape | ISO 2409 rating 0-1 |
| Salt spray | NSS chamber | ≥ 100 h (with phosphating) |
| Bake cure | MEK rub test | No paint lift after 50 rubs |
| Appearance | Angle-light inspection | No orange peel, sagging, pinholes or overspray |
Workshop Layout & Floor Area
| Zone | Area |
|---|---|
| Pretreatment / phosphating | 110 m² |
| Spray booths (barrel + rack + cold) | 180 m² |
| Flash-off & curing ovens | 120 m² |
| Paint mixing / store | 60 m² |
| QA & color lab | 40 m² |
| Utility / compressed air | 50 m² |
| Packaging | 40 m² |
| Total workshop | 600 m² |
Manpower & Shift Plan
| Role | Headcount |
|---|---|
| Spray operators | 10 |
| Pretreatment operators | 3 |
| QC inspectors | 2 |
| Paint mixing technician | 1 |
| Oven / conveyor monitor | 1 |
| Supervisor | 1 |
| Maintenance | 1 |
| Packaging | 1 |
| Total (2 shifts × 10 h) | 20 |
Power & Utility Demand
| Equipment | Demand |
|---|---|
| Spray booths + extraction | 40 kW |
| Curing ovens (2 × 60 kW) | 120 kW |
| Air compressor | 22 kW |
| Conveyor / barrel drives | 15 kW |
| Paint pumps + mixer | 8 kW |
| Lighting & auxiliary | 15 kW |
| Installed total | 220 kW |
| Typical running load | ≈ 175 kW |
Production Flow Chart
PretreatmentDegrease → phosphate → dry
Load & MaskBarrel / rack / cold painting load
Primer CoatElectrostatic or air spray
Flash-off5-10 min solvent flash
TopcoatColor coat per RAL
Cure & QCBake 120-160 °C, inspect, pack
Daily Capacity — 10-Hour Operating Day
| Parameter | Value |
|---|---|
| Coating cycle | 40-70 min |
| Load per batch | 60-120 kg |
| Batches per 10 h day | 10-14 |
| Daily output | 400,000-900,000 pcs |
| Monthly output (26 days) | 10-23 million pcs |
Output Value Estimate
| Parameter | Value |
|---|---|
| Painting fee per piece | USD 0.008-0.02 |
| Daily output value (10 h) | USD 4,000-10,000 |
| Monthly output value | USD 104,000-260,000 |
| Annual output value | USD 1,250,000-3,120,000 |
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