Overhead Conveyor Powder Coating Line for Sheet Metal Parts 20000.00cm * 200.00cm * 400.00cm Package Size

This powder coating production line is specifically designed for coating sheet metal components of electric control cabinet chassis in a wide range of sizes and geometries. The system features a polypropylene (PP) spray booth, offering excellent chemical resistance and long service life.The coating process combines automatic electrostatic spraying with manual touch-up coating, ensuring uniform coverage across flat surfaces, edges, and complex structures. A monorail overhead conveyor system provides stable, continuous transportation of workpieces throughout the entire coating process.

Production Line Workflow

1. Hanger Stop & Elevator: PositioningThe hangers stop at the loading station while the elevator descends to assist operators with manual hanging of the sheet metal workpieces.

2. Pre-Spray Treatment: Workpieces move step-by-step through multiple pre-treatment stations. At each station, the parts stop for spraying and cleaning operations, ensuring thorough surface preparation before coating.

3. Moisture Drying: After pre-treatment, the workpieces accumulate in a drying zone where residual moisture is completely removed, preparing the surfaces for high-quality powder application.

4. Manual Spray Booth: The workpieces pause in the manual spray room, allowing operators to perform detailed coating on corners, recesses, and areas requiring special attention.

5. Automatic Spray Booth: In the automatic spray booth, workpieces move continuously at a controlled speed of 1.0–1.5 m/min. Automatic spraying is combined with supplementary manual spraying to achieve consistent, full-surface coverage.

6. Powder Solidification: Following spraying, the coated workpieces are accumulated in an inclined arrangement to ensure proper powder solidification, resulting in a durable and uniform coating layer.

7. Natural Cooling: The workpieces stop in the cooling area to undergo natural cooling, allowing the coating to stabilize and maintain its mechanical and aesthetic properties.

8. Transfer to Assembly Area: Once cooled, the finished parts are conveyed to the assembly area for subsequent operations such as component installation or packaging.

9. Elevator Down & Manual Unloading: Finally, the elevator descends to assist operators in manually removing the finished workpieces, preparing them for shipment or further processing.