The paint gloss level to be measured with the gloss meter;

• Between 30-70 gloss, at an angle of 60 °,
• If it is above 70 gloss, at an angle of 20 °,
• If it is under 30 gloss, at an angle of 85 °,
• It is performed by using gloss measuring devices with a wider measurement range on surfaces above 200 gloss (gloss).

It is a type of paint consisting of dry and solid raw materials. Generally in its content;

• Pigment: It has a colorant and covering function.
• Filling material: Determines the mechanical properties of powder paint by giving volume.
• Resin: It determines the basic properties of paint.
• Hardener: It reacts with the resin and determines the chemical resistance and mechanical properties of the powder paint.
• Additives: It generally determines the surface appearance.

Paint thickness is measured from five points, each 1 cm² on the sample, and 3-5 readings are taken at each point. The average of the readings at each point is written on the test report as the “measurement result”. If any of these measurement results is less than 80% of the desired value, the sample will not pass (negative result).

• Chrome free passivation is a type of coating that is used instead of chrome+6 in powder coating surface treatment.
• This coating, which is made before the drying oven, ensures that the powder paint and the metal adhere to each other.
• It works in the pH range of 2.5 -3.5 on average.
• The processing time is between 20-60 seconds on average.
• The drying temperature after surface treatment is 100 °C at most.
• The coating weight is required to be 3-20 mg/m2.

Qualicoat is a certification program established to standardize the quality of surface treatments and coatings for aluminum building elements. The program aims to enhance the service life of aluminum building components, protect the environment, and ensure high-quality products by standardizing the quality of aluminum profile coatings.

Founded in Switzerland in 1986, Qualicoat has become an international program. The program requires quality control of coating materials, coating process, coating thickness, and post-coating treatments.

Qualicoat certification guarantees the quality of the coating process and also limits its environmental impact. This certification provides manufacturers and customers with a reference for coating processes and establishes reliability in terms of standards.

To obtain Qualicoat certification, a manufacturer first needs to develop their coating processes and quality control methods at their facilities. They are then reviewed by an independent testing organization for compliance with international standards. These tests may include measurements of coating thickness before and after, salt spray tests, and other coating quality control tests.

In conclusion, Qualicoat certification is an important step towards standardizing the quality of surface treatments and coatings for aluminum building elements. A Qualicoat-certified manufacturer can offer customers high-quality, long-lasting, and environmentally friendly coatings.

It is called by this name because it was found by Michael Faraday. It is a definition given to the area covered with conductive metal, where it does not transmit electricity to the outside of the interior. In this way, the electric field is prevented from entering or exiting.

One of the biggest problems of the electrostatic powder coating process is that the coating thickness is below the desired values. Some of the main reasons for this situation are as follows.

• Spray gun voltages are incorrect.
• Since the paint hangers are not clean, they are not conductive.
• The air pressure to the spray guns is insufficient.
• There is deformation in the paint hoses.
• Powder coating grain sizes are large.
• There is no dry air in the system as the air dryer is out of order.
• There is no static current as the grounding is not done correctly.
• Powder paint has a high recycling rate.
• There is not enough paint in the powder paint hopper.
• Air puffing in the powder coating chamber is not enough.
• Cyclone absorption rate is high.

One of the powder coating mistakes is improper curing. The powder coating manufacturer indicates the ideal curing temperature on the product. In unstable processes; baking oven length and conveyor speed are determined; The residence time of the material in the oven is calculated from the formula Distance = Speed x Time. The thermograph device allows us to control the curing temperature and time of the powder paint. The process steps are summarized as follows.

• Thermograph device probes placed on empty hangers are connected to different points of the hanger.
• The thermograph device passed through the oven is connected to the computer program and the graph obtained indicates how many minutes and how many degrees the material has been exposed to.
• If the temperature is not evenly distributed in the oven, it can be seen in the graph.
• Oven thermometer verification can also be partially checked with a thermometer.

• It is done by applying sinking/slump on the test plate.
• The painted surface is gradually subjected to pitting.
• It is the measurement of cracking or separation of the paint on the metal surface.