Everything You Should Know About Powder Coating Finishes

Before knowing about the powder coating system, you must first know powder paint. Powder paint or powder coat is paint that has a powder-like texture. It is a high quality pigment powder. Use one-time melting technology (Thermosetting), which powder paint has unique properties such as being resistant to sunlight, resistant to shock, scratching, anti-alkali, and resistant to various weather conditions well. Powder paint can be used for many types of work.

Used to mix cement: To create beautiful and durable colors on surfaces such as polished cement floors, terrazzo floors, worm blocks, water jars, pottery.
Industrial work: Sprayed onto steel, metal, and aluminum to highlight a variety of shades and glosses. Powder coating will provide durability. Sticks tightly and doesn't come off.
External structural work: To emphasize strength and resistance to the environment

You can see that powder coating can be used on a variety of workpieces. If you use it to mix general cement, you can easily follow the steps or recommendations in the user manual. But if it's a paint job, It is considered to be a very advanced job. Because it must go into the Powder Coating system, which is a process of spraying paint onto materials in industrial applications. Can be used on metal, plastic, wood, and other materials. Powder painting will help prevent rust, peeling, and make it more durable and beautiful.

Powder spraying process

The powder coating system has a rather complex work process because it requires a powder coating machine with a dedicated electrical power source. Including having a powder spray tank that can adjust the pressure. And when the powder coating is sprayed onto the material using a compressed air supply, it will cause the powder coating to adhere to the surface of the material. Once finished, the material must be put into an oven that can adjust the heat to allow the powder coating to change to the desired color. We would like to summarize the steps of the powder coating system for easy understanding below.

Step 1: Prepare the surface

Use a grease remover to clean the material to be painted.
For steel materials, prepare the surface with zinc phosphate.
As for rusted materials or aluminum, plate them with aluminum chromate.
Rinse with water as the last step. Before the final rinse, check the water to be at normal temperature. The measured value should be lower than 30 uS/cm. to control ion contamination.

Step 2: Painting

When the surface is prepared, the workpiece will be hung onto the electrodes.
Paint with an electric paint sprayer with +/- terminals.
The powder will stick to the surface of the workpiece. As for the colored powder that fell on the floor. Operators can reuse it again.

Step 3: Bake with heat.

When moving the workpiece, be careful not to let anything hit the workpiece. Because the powder paint that is sprayed will come off the workpiece.
The temperature used is 180 - 200 degrees Celsius to allow the paint to melt and coat the workpiece.
This step generally takes 10 - 20 minutes, depending on the workpiece and the type of oven.

Even though powder painting involves quite detailed work. But it helps produce more workpieces than other coatings. It also gives a beautiful and consistent color. However, operators must consider a powder sprayer that is of high quality and durable. For durability and efficiency in use.

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