How to spray plain paint
Spraying plain paint is a common process in automobile spraying, furniture renovation and other scenes. Mastering the correct spraying skills can significantly improve the quality of the finished product. The following are the technical points and precautions related to plain paint that have been hot topics on the Internet in the past 10 days. They are analyzed in detail for you based on structured data.
1. Preparation work before spraying plain paint
| steps | Operation content | Things to note |
|---|---|---|
| surface treatment | Sand, clean, degrease | Make sure there is no dust or rust |
| Masking protection | Protective tape, covering film | Avoid contamination of non-spray areas |
| environmental inspection | Temperature 15-25℃, humidity ≤70% | Avoid high temperature and high humidity environment |
2. Spraying Tools and Material Selection
| Tool type | Recommended specifications | Function description |
|---|---|---|
| airbrush | Caliber 1.3-1.5mm | Even atomization, suitable for plain paint |
| Thinner | Matching brand diluent | Ratio 10-30% (depending on temperature adjustment) |
| Primer | Epoxy primer or mid-coat primer | Enhance adhesion and hiding power |
3. Spraying operation process
1.Test spray adjustment: Test the spray gun air pressure (generally 1.5-2.5Bar) and paint flow rate on the scrap board.
2.First coat of spray: Spray thinly (50% overlap rate) to form a matte layer and leave it for 5-10 minutes.
3.Second coat of spray: Thick spray (70% overlap rate) to ensure complete coverage and avoid sagging.
4.Check for corrections: Observe the paint surface with side light and repaint it locally if necessary.
| FAQ | Cause analysis | Solution |
|---|---|---|
| Cellulite | The spray gun is too far away or the air pressure is insufficient | Keep a distance of 15-20cm and adjust the air pressure |
| hang | Spraying too thick or improper dilution ratio | Control the gun speed and dilute according to the standard |
| grainy | Environmental dust or paint is not filtered | Clean the site and use a 200 mesh filter |
4. Key points of post-spraying treatment
1.Drying time: Tack dry in about 30 minutes, complete curing takes 24 hours (25℃ environment).
2.Polishing time: It is recommended to do it after 72 hours to avoid scratching the paint surface.
3.Maintenance suggestions: Avoid high-pressure water gun cleaning within 7 days to prevent the paint film from not completely hardening.
5. New trends in spraying technology in 2024 (hot search reference on the entire network)
| technology trends | Application advantages | Applicable scenarios |
|---|---|---|
| Water-based plain paint | Environmentally friendly, low VOC, fast drying | Indoor furniture, electric vehicle repair |
| Intelligent paint mixing system | Accurate color matching, error ≤3% | 4S shop, high-end modification factory |
| Quick drying curing agent | Shorten the construction period to 4 hours | Assembly line operation |
Through the above structured data and operating points, you can systematically master the core technology of plain paint spraying. In actual operations, it needs to be flexibly adjusted according to specific products and environments. It is recommended that the first operation be performed under the guidance of professionals.
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