Principle Analysis of Spray Painting in Automobile Painting Process
1. Check tools and working environment before painting The moisture in the air compressor must be released first. Thoroughly clean and inspect spray booths and ventilation screens. Clean spray paint floor. 2. The surface is clean Spray surface must be washed with water, there are oils, wax to use a reagent oil, new welding or metal surface after the rust to be used - epoxy rust primer treatment to prevent rust. 3. The correct method of sanding Use sandpaper and do not use too much force. Use finer sandpaper as much as possible. 4. Use high quality thinner Do not use thinners for thinners. Use thinners. Paints can be of the highest quality. Using cheap thinners can save you a few dollars, but they will take more time and effort. With high-quality thinners, work will be more smoothly. . 5. Both hardener and thinner must be correct Incorrect proportion of hardener and diluent will affect the effect of the paint. 6. Good primer Regardless of spraying, solid color paint, silver base paint, good quality should be used to increase adhesion and gloss. 7. Mix evenly No matter which kind of paint, which manufacturer, stirring is the most important, especially containing silver powder. 8. The air pressure should be appropriate The gun nozzle pressure is ideally maintained at 40-50 pounds. Too much or too little pressure will affect the spray effect and cause waste. 9. The correct spraying method should follow the product instructions Keep the distance between the spray gun and the object within 15-20 cm. Each spraying interval is 5-10 minutes. Each product has different construction instructions, such as: hardener mixing, spraying distance, and available time. 10. Ventilation should be good 11. Spraying environment should be clean
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