How to mist car spray paint: tips and steps explained
In the car painting process, mist spraying is a common spraying technique, mainly used for primer, transition layer or local repair. Mist spray can achieve an even paint finish without sagging or color differences. This article will combine the hot topics and hot content on the Internet in the past 10 days to introduce in detail the operating steps, precautions and related data of mist spray.
1. Definition and function of mist spray
Mist spraying refers to spraying paint mist on the car body in the form of finer particles by adjusting the air pressure and paint output of the spray gun. Its functions include:
1. Achieve uniform coverage of primer;
2. Reduce the thickness of the paint surface to avoid sagging;
3. Used for color transition or partial repair.
2. Operation steps of mist spraying
| steps | Operation content | Key parameters |
|---|---|---|
| 1. Preparation | Clean the car body, polish the area to be sprayed, and cover the parts that do not need to be sprayed | Sanding paper: P800-P1000 |
| 2. Adjust the spray gun | Adjust the air pressure of the spray gun to 1.5-2.0bar and the paint output to medium to low. | Air pressure: 1.5-2.0bar; paint output: 50%-60% |
| 3. Test spray | Test spray on scrap board to observe the uniformity of paint mist | Spray gun distance: 20-30cm |
| 4. Official spraying | Keep the spray gun moving at a constant speed and spray with 50% overlap | Moving speed: 0.5-1 meters/second |
| 5. Drying check | Wait for the paint surface to dry before checking the effect and re-spray if necessary. | Drying time: 10-15 minutes (normal temperature) |
3. Common problems and solutions for mist spraying
| question | Possible reasons | solution |
|---|---|---|
| Uneven paint surface | The moving speed of the spray gun is unstable or the air pressure is too low | Adjust the air pressure to 1.8-2.0bar and keep moving at a constant speed |
| Paint mist is too thick | The amount of paint output is too large or the distance is too close | Reduce the amount of paint and adjust the distance to 25-30cm |
| The color difference is obvious | The base color is not completely covered or the number of sprays is insufficient | Increase the number of mist sprays to ensure a uniform base color |
4. Precautions for mist spraying
1.environmental control: The spraying environment should be dust-free and well-ventilated, and the temperature is recommended to be between 15-25°C.
2.personal protection: Wear a gas mask, goggles and gloves to avoid inhaling paint mist.
3.Paint selection: Use a thinner suitable for mist spraying. The usual ratio is paint: thinner = 1:0.8-1.
4.Spray gun maintenance: Clean the spray gun promptly after spraying to prevent the paint from solidifying and clogging.
5. Association of hot topics across the entire network
Hot topics recently about car painting include:
-Environmentally friendly spray painting technology: Promotion and application of water-based paint mist spray;
-AI assisted color grading: Match the original car color through smart devices;
-Quick drying technology: Application of infrared drying in mist spray.
Through the above steps and techniques, you can better master the mist spray technology in car painting and achieve high-quality paint effects.
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