01. Description of auto continous powder coating line
Your products need to be coated: Electrowelded galvanized mesh coils ;
Application of finished products: fence system for highway, railway & industrial factory;
Max. size of workpiece: Length: 30000mm × Width: 2500mm;
Output: ≥3-5m/min;
Heating source: electricity;
Power consumption: installed capacity 170kw, average power 150kw;
Water consumption: 2.5-3.0m3/h (circulated water);
Powder application method: auto application by fluidized bed;
Required size of coating factory: 30×10×5m(L×W×H)
Process flow: ①Manual feeding mesh coil on our de-coiler → ②Pre-heating furnace → ③Auto powder coating in fluidized bed → ④Curing furnace → ⑤Water cooling on coated mesh → ⑥Manual discharging of finished coil → ⑦Manual shaping correction → ⑧Quality control → ⑨Final package
Brief description: The metal fence is first preheated to a certain temperature and then passed through a fluidized bed of plastic powder where the powder particles melt, adhere and flow out to form a smooth continuous PVC coating. It is then post-heated to complete the curing of the outer surfaces. Both pre-heating furnace and curing furnace are natural gas heated.
02. Equipment list
1. Auto eletrical pre-heating & curing furnace
1.1 Pre-heating furnace:
Outer dimension (L×W×H): 5400×2540×1510(mm);
Thermal insulating layer thickness: 200mm (mineral wool);
Constructional material: Iron plate (1.5mm & 3.5mm), framework: angle steel (3#, 4# & 5#);
Design heat-insulating property: ≤400℃
1.2 Curing furnace
Outer dimensions (L×W×H): 4300×2880×1980(mm);
Thermal insulating layer thickness: 180mm (mineral wool);
Constructional material: Iron plate (1.5mm & 2.0mm), framework: angle steel (3#, 4# & 5#);
Constructional method: After machine-shaping, above-mentioned constructional material are pieced together by welding with the help of self-plugging rivet and bolt.;
Design heat-insulating property: ≤300℃
1.3. Electrical heating equipment for pre-heating furnace
1.4 Electrical heating equipment for curing furnace 2. Fluidized bed, vibration generator:
2.1 Fluidized bed
Outer dimensions (L×W×H): 2900×800×1200(mm);Constructional material: Iron plate (1.5mm & 2.0mm), 40×60 square steel tube, 4# angle steel, bolt and matched filter fabric;Constructional method: After machine-shaping, above-mentioned constructional material are pieced together by welding with the help of bolt.
2.2 Vibration generator:
Constructional material: 10mm Iron plate, framework: 5# angle steel, 5# channel steel, and mechanical part.
Constructional method: After machine-shaping, above-mentioned constructional material are pieced together by welding with the help of bolt.
2.3 Dust removing device
2.4 Spray device 3. Roll mesh delivery system 4. Mesh de-coiler 5. Power supply control equipment, auto program control
03. Layout plan of roll mesh pvc coating line
04. Typical pvc coated roll mesh
Coated coil meshPowder coated meshPVC coated roll mesh