Metal parts must be cleaned and pretreated before coating to remove oil, rust and oxide layers, providing a clean surface for coating adhesion. Taizhou Yufeng Intelligent Equipment Co., Ltd. designs industrial cleaning and gantry pretreatment lines for manufacturers, suitable for batch pretreatment of large and medium metal parts.
Industrial cleaning process
The cleaning process configures degreasing, oil removal and rinsing according to the workpiece contamination. Degreasing uses alkaline or neutral cleaners with spray or immersion methods to remove oil. Ultrasonic cleaning enhances the effect for complex workpieces. Multi-stage countercurrent rinsing reduces cleaner residue. After cleaning, the workpiece surface meets the requirements of no oil, no rust and no impurities.
Gantry conveying
Gantry conveying uses a traveling crane structure. Workpieces are lifted and automatically pass through each tank. The gantry type suits large and heavy workpieces with strong load capacity. The conveying speed matches the dwell time of each process to ensure full treatment. The gantry frame uses anti-corrosion structure to adapt to the corrosive environment of the tanks.
Derusting and phosphating
The derusting process removes rust and scale from the workpiece surface, using acid pickling or mechanical derusting. The phosphating process forms a phosphate conversion coating to enhance coating adhesion. Corresponding processes are configured for different materials, and aluminum parts use conversion coating treatment. After pretreatment, workpieces enter the coating process promptly to avoid surface recontamination.
Wastewater treatment and environmental protection
The cleaning wastewater from pretreatment contains oil and chemicals. Wastewater treatment facilities are configured to treat it according to environmental requirements. Baths are replaced regularly and waste residue is disposed of legally. Workshop ventilation and protection facilities ensure operation safety. Environmental investment is an important part of pretreatment line construction.
Project planning
When planning an industrial cleaning and gantry pretreatment line, provide the workpiece material, size, weight, contamination, output and environmental requirements. We design the tank layout, conveying method, heating and wastewater facilities, and provide the equipment list and investment estimate.
For an industrial cleaning and gantry pretreatment line proposal, contact Taizhou Yufeng Intelligent Equipment Co., Ltd. for a professional evaluation.