Rack Painting

Rack Spraying (Hanging Spray) is the highest quality standard for metal accessories. It creates the "Piano Gloss" or "Ceramic Matte" finish seen on luxury handbags and belts.

1.1 Zoning

• Zone A: Gowning & Air Shower: Change into lint-free clean suits and pass air blast. • Zone B: Paint Mixing Room: Isolated, explosion-proof, ventilated. • Zone C: Spray Booth: Positive pressure (MAU air supply + exhaust). • Zone D: Flash-off Tunnel: 3-5m dust-free buffer. • Zone E: Curing Oven: IR tunnel/box type.

1.2 Key Equipment

• Hand Painting Gun • Automatic Hanging/Rack Painting Machine • Water Curtain Painting Case • Oven Machine

1. Sand Blasting

Automatic Sand Blasting Machine Barrel size:Φ60*110cm Machine size:120*120*186cm Process time:30-50KG/10 minutes RPM:25 Pressure:2-7kg/cm²

2. Degreasing & Polishing

Machines 1-Barrel Type Polishing Machine 2-Vibrating Type Polishing Machine 3-Whirlpool Type Polishing Machine 4-Automatic Whirlpool Type Polishing + Separating Machine 5-Centrifugal Type Polishing Machine 6-Product & Polishing Stone Separating Machine Materials 1-Round Shape Rough Polishing Stone 2-Triangle Shape Rough Polishing Stone 3-Derlin Coniform Shape Fine Polishing Stone 4-White Aluminum Round Refined Polishing Ball /Painting Stone 5-Porcelain Refined Polishing Stone 6-Aluminum and Porcelain Oblique and Round Column Refined Polishing Stone 7-Oil Cleaning/Degreasing Powder 8-Oil Cleaning/Degreasing Agent

3. Phosphating & Cleaning

You can make the phosphorization by the machine or hand. If you make it by hand, you need to clean it. Automatic phosphorization machine I. Tank Section II. Track Section III. Drum (non-conductive) IV. Transmission Section V. Crane VI. Electrical Control Section VII. Inlet and Drainage System Phosphating Agent 25KG/barrel

4. Drying

Hot-wind Centrifugal Dryer (35KG)-Stainless steel inside and out 1-Inner tank thickness: 3CM 2-Bottom plate thickness: 3CM 3-Net thickness: 1CM 4-Motor power: 0.75KW 5-Heater power: 3KW Capcity: 30KG Hot-wind Centrifugal Dryer (35KG)-The outside is iron, the inside is stainless steel 1-Inner tank thickness: 3CM 2-Bottom plate thickness: 3CM 3-Net thickness: 1CM 4-Motor power: 0.75KW 5-Heater power: 3KW Capcity: 30KG

5. Spray Painting with Barrel Painting Machine

Machines 1-Intelligent Barrel Painting Machine 2-Machine Painting Gun 3-Automatic Barrel Painting Machine Materials 1-Paint 2-Hardener 3-Thinner

6. Hanging (Automatic / Manual)

Automatic Automatic Slider Arranging Machine Manual Hand Painting Frame

7. Painting (Automatic / Manual)

Automatic Automatic Hanging/Rack Painting Machine Manual Machine Painting Gun Hand Painting Case

8. Oven Curing

Machines 1-Automatic Oven Machine (double doors, two side open) 2-Automatic Oven Machine (single door) 3-Small Oven Machine (for testing) 4-Automatic Oven Machine (double doors, one side open)

3.1 Step-Cure Profile (Zinc Alloy)

• Pre-Heat: 60-80℃ (solvent removal) • Ramp Up: 100-120℃ (leveling) • Hard Cure: 150℃ (cross-linking) • Hold: 150℃

3.2 Daily Audit

• Weekly thermograph check (data logger). • Temperature uniformity: ±5℃.

Transfer Efficiency (30%-40%)

Optimize rack density, match gun fan to rack width.

Oven Cost

Run at 100% capacity, continuous batch production.

Safety

Rack grounding, monthly cleaning of fan/exhaust ducts.