Maof Engineers Ltd.
A tour of the "Barken Paint" factory from aluminum to aluminum. Why pay attention?
The Color Factory Tour / Certificate of Light - Light Barkan
products instead of manufacturing them. Paint coating on aluminum profiles is one of the important things. In a marine environment. We wanted to make sure that we were getting the right coating at the right thickness.
The aluminum profiles come to the paint factory in neat packages from the aluminum company.
Arrange the aluminum profiles in large baskets.Mechanically and automatically the baskets are dipped within 7 baths one after the other.The purpose of the baths is: cleaning and washing the profiles, lowering the aluminum coating, dissolving adhered lipids, inserting chromium into the profile (which is the primer for color) and drying the profiles - a total of 50 minutes of preparation.
The profiles are transferred from the preparation phase to the coloring phase
After the chromatization and drying process, the profiles are arranged on racks that allow perfect separation between each profile.
Electrostatic painting is based on the principle of "counter-attraction". To create a uniform and durable finish on metal accessories / surfaces. This method uses a powdery color containing resins and pigments. The paint is fed from the supply tank into the spray gun.
The accessory / painted surface is grounded and thus charged with a positive charge.
The powdery color is charged with a negative charge and separated into particles by spraying out of the gun with compressed air.
Negative charge color particles are strongly attracted to positive charge profiles. The powder particles are held there until smelted and joined together to form a thin coating layer after treatment with drying ovens
Figure 1 illustrates the direction of the electric field generated by the attraction of the negative particles charged with a negative charge to the product / surface charged with a positive charge.
The use of various compositions such as epoxy, polyester or various hybridizations of these materials is determined by the purpose of the accessory / product use. For example: Polyester provides the best durability for coatings that stand outside, while Epoxy provides the best protection and resistance to chemicals and solvents.
The profiles continue into a 220 degree oven to dry the paint.The painted profiles are arranged back for the purpose of delivery from the factory - if there is no waiting between processes the total duration of coloring from the arrival of material to the factory until delivery is about 3 and a half hours.
Quality Control / Assurance:
Here are some checks that the factory performs regularly:
A. Factory Standard Certificate Certificate. The factories are supposed to be audited by the Standards Institute once a year and the color companies (Tambour/Nirlat) audited once a year.
B. In each batch of dyed profiles, the Quality Controller adds discs for batch testing. The tests include:
A. Color Thickness - If there is no special requirement, the color thickness is between 60-90 microns.
B. Dot check - hit the disc and make sure the color stays intact.
third. Adhesive Test - Scratch the glue pasting adhesive paper on the scratched area and pulling the paper. Make sure that the color does not continue with the paper.
D. Heat resistance - Preheat the disc to 220 degrees and refrigerate. Make sure the color stays intact and uniform.
third. Make sure that the paint powder used by the plant is in the right shade, in validity and standard.
Photography and Writing - Engineer with me Paz Chen