medium temperature aluminum veneer fluorocarbon spraying construction technology

1. Pre-treatment

1.1 select suitable sand for different types of aluminum materials and then polish it, and pickle (or alkali wash) the polished aluminum materials & rarr; phosphating and passivation & rarr; surface adjustment. Surface Cleaning

different 1.2 of aluminum have different pretreatment standards, pay attention to control, pickling or alkali washing time and table adjustment point.

The surface of the 1.3 must be clean, and there is no residual liquid medicine.

2. Primer spraying

2.1 spraying tools have air spraying, electrostatic spraying, reciprocating automatic spraying, airless spraying and other methods. Different spraying methods will lead to different coating viscosity.

The film thickness of 2.2 primer should be controlled at 15mm (dry film), and the coating interval should not be less than 3mm.

2.3 use the manufacturer's solvent selection do not mix, please receive the company's professional guidance

3. Topcoat spraying

3.1 according to the coating method to choose different viscosity for construction

3.2 attention to select the appropriate solvent for adjustment

3.3 pay attention to the adjustment of resistance, flow rate and temperature

4, baking

4.1 The curing time of this product is 180 ℃ 20min ± 2min (two coats)

4.2 Pay attention to the temperature difference and temperature control of the drying tunnel

4.3 pay attention to the drying tunnel length, chain speed and automation control.

5, film packaging

Please choose the packaging film with moderate viscosity and film thickness, and pay attention to the external exposure time. If there are any endless matters, consult the technical service personnel of the company.

Remarks: topcoat: thinner ratio is 10:3 (thinner can be more or less according to site needs)