1. Start of the process: introduction of the materials into the painting chain via the

hitches.

The maximum weight of a part, currently, must not exceed 280 kg per piece. Being the

piece size of 6,700 mm*1,600 mm*800 mm and in some cases, depending on the type of

pieces can reach a length of 7,200 mm, a height of 1,900 mm, and a depth of 900 mm.

2. Pretreatment tunnel: consists of three stages: I degreasing + phosphating II washing III washing

+ passivation. Its purpose is to degrease the surfaces of metal parts and coat them

from a primer of chemicals that facilitate paint adhesion,

acquiring a greater degree of protection.

3. Drying oven: removes moisture from the metallic materials from the previous stage, thus

like any residual impurity. The part is heated to improve paint application to

through forced convection system.

4. Painting booths: powder coating is applied in the chosen color via loading

electrostatics. This application is carried out with automated robots (3 + 3 reciprocator)

guns, year 2021), with all parts touched up manually (2 manual guns). The

composition of coating with solid thermosetting resins free of solvents

allows that, after a heat treatment, it achieves finishing characteristics,

adhesion, corrosion resistance, durability, etc. much higher than the processes of

conventional painting.

5. Polimerization oven: the coated parts enter through a furnace in the shape of

bellows or with air curtains for about ten minutes, to prevent heat dispersion.

Generally the paint cures at around 200°C. The parts must be free from

foam and/or silicones, as well as any other material that cannot withstand that temperature

6. Discharge area

All this process takes place along 180 meters of air conveying chain of the

brand Düotechnik reinforced and updated in 2018.

Powder coating line