What Is Powder Coating Equipment?
It’s a form of coating equipment that helps in applying powder. Powder coating equipment does not involve solvents in its processes. The coating is carried out electrostatically and is then passed under heat, allowing the powder to flow and form a “skin “.It may be a thermoset polymer or even a thermoplastic. Generally, it’s used to give a difficult finish that will be harder compared to the conventional point that was formerly used. The key intent behind using this equipment is for coating metals, such as bicycle parts, household appliances, aluminum extrusions and many more.
Few advantages of powder coating are mentioned below:
– Emission Of Volatile Organic Compounds Are Reduced By Coating The Metals
– It Produces Much Thicker Coating As Compared To Traditional Liquid Coating
– It Can Be Recycled, Facilitating 100% Reusability Of The Substance
– Produces Less Hazardous Waste As Compared To Traditional Use Of Liquid
– Lesser Operating Cost Than Liquid Lines
Process Of Powder Coating
The Powder Coating Equipment work in following basic processes:
– Part Preparation Or The Pre-Treatment
– The Powder Application
Processes And Equipment Of Part Preparation
Ahead of the powder coating process removal of lubrication grease, metal oxides, mud, oil etc are essential. There are numerous chemical in addition to mechanical types of removing these substances from the metal surface. The strategy is determined by the performance requirement of the finished product. In the spray application process, chemical pre-treatments involve the usage of chromates and phosphates. Phosphating and chromatin of the substrate occur in multiple stages. Bonding of the powder to the metal involves cleaning in the pre-treatment process. Sand Blasting can be another way of preparing the top prior to coating. It’s used to offer finishing, etching, surface texturing, and preparation and degreasing for products made of wood, glass, or plastic. Different powder coating applications can require alternative types of preparation such as abrasive blasting prior to coating. The online consumer market typically offers media blasting services coupled using their coating services at additional costs.
Commonly electrostatic gun or corona gun is used for applying the powder coating to metal objects. Here, lets discuss the working of electrostatic guns. spray on coating Negative electric charge is imparted to the powder. The negatively charged powder is then sprayed towards the grounded object by mechanical or compressed air spraying equipment. It’s then accelerated towards the workpiece by the powerful electrostatic charge. The thing is then heated, and the powder melts into a standard film and is then cooled to form a difficult coating. To accomplish more uniform finish preheating may help but problems may also be created as runs brought on by excess powder.
Tribo gun is the second kind of gun that will be used to spray powder on metal surfaces. The powder is first charged by triboelectric friction and these charged powder particles then stick to the grounded substrate. It requires a different formulation of powder with respect to corona guns.
Fluidized bed method may also be used for Powder coating. In the beginning the substrate is heated and then it’s dipped into aerated powder-filled bed. Later the powder sticks and melts to the hot object. Most dishwasher racks are coated with this process of coating.