Learn About Powder Coating System

The powder coating system is nothing but type of dry coating on the surface of metal or plastic

. The major difference point between powder coating and liquid coating is that solvent is not required for powder coating to keep the binder and filler parts in a liquid suspension form. Two types of powders are used for powder coating process; one is thermosetting and another is thermoplastic which re-melts when heating is on. The powerful and successful powder coating technology requires high preparation for the process. Poor preparation and performance lead to failure to powder coating equipment plant. The preparation should be clean, rinse, etch, chromate, rinse and denim rinse.

Most of the aluminum metal surface is used for powder coating as it is very better for adhesion and protects the aluminum from under the paint corrosion. The oil, dirt, or other contaminants on metal surface should be avoided before powder coating. For steel part, make sure for clean, rinse, etch, rinse, grain refine, zinc phosphate, rinse and acidulated rinse. Cleaning and finishing of the metal surface is very much important for powder coating. This is the first step and care you should keep in mind.

For more accuracy of powder coating process is the use of powder spray guns. Powder is charged by electrostatic method and powder get stick to the metal surface. Powder coating gun and spray are used for electrostatic method. The temperature is the next factor now. Keep the temperature about 350 to 375 degrees. Corona guns are used in applications where large area of surface is used to do powder coating with high speed and most accuracy. It is useful for automotive car bodies and appliance outer shells.

Large objects powder coating can be done with the help of flame spray powder coating equipment where use of oven is impossible. Here thermoplastic powder is used. Powder spray booths are used in electrostatic method. This technique is very much helpful to lower the coating cost. The high production powder coating systems use number of colors, with up to 20 color changes per day.

The benefits of powder coating equipment are reduction in cost, time and effort. It has increased efficiency and speed of the powder coating process. The powder coating equipment consists of flat spray nozzles, extension tips, various deflector sizes and shapes. Every accessory serves different purposes and creates different cloud patterns for penetrating different areas. Start coating process in well-ventilated area. Always follow experts tips and guidance for successful powder coating.

by: mitgun

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