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I. Description:
Powder coating is the application of paint in the form of tiny dry particles. Unlike traditional wet spray painting methods, we simply use a clean and efficient electrostatic powder coating process. The parts to be painted are given an electrostatic charge that is opposite to the charge given the powder. As the paint powder is sprayed onto these charged parts, the powder particles are naturally drawn towards this opposite charge. This process yields parts that are uniformly coated with a minimum expenditure of powder, which translates to a superior coating for less money than traditional wet spray methods. After the powder is initially applied, the parts are baked at specific temperatures in curing oven. Inside the oven, the plastic powder instantly turns from its solid powdered phase to liquid phase and finally cures into a solid phase. At the end of the process, there will be a durable plastic coating layer that is bonded directly to the metal.
II. Technical parameters
1. Name of workpiece: Iron plate for security door2. Max hanging size on each hanger: L1500mm×W100mm×H2300mm3. Loading capacity on hanging hook: ≤70kg4. Suggested interval between 2 hangers: 500mm5. Conveying speed: 1.5m/min (Adjustable control)6. Output: 35-45pcs per hour7. Spraying method: 4 auto spray guns (match on 2 reciprocators) & 2 manual spray guns8. Heating source: natural gas (Other choices are available: electricity, oil or coal)9. Pretreatment system: Vertical shower type
III. Process flow
1. Feed your security door on this automatic powder coating line2. Pre-degreasing stage (50-65 Celsuis for 1 min)3. Degreasing stage (50-65 Celsuis for 2 mins)4. Rinsing stage (Room temperature for 1-2 mins)5. Surface conditioning stage (Room temperature for 1 min)6. Phosphating stage (35-45 Celsuis for 3 mins)7. Rinsing stage (Room temperature for 1-2 mins)8. Drying off oven to remove surface moisture (100-120 Celsuis for 10 mins)9. Powder application with spray guns10. Powder curing (180-200 Celsuis for 20 mins)11. Finished product dischargingIf above parameters cannot meet with your strict coating need, please contact us for more detail. We can make some adjustments or even improvements to suit your actual production conditions.