It is a kind of coating equipment that assists in applying powder. Powder coating equipment doesn't require solvents in its processes. The coating is done electrostatically and is also then passed under heat, allowing the powder circulation and form a "skin". It might be a thermoset polymer or perhaps a thermoplastic. Generally, it is employed to offer a hard finish that's harder than the conventional point which was formerly used. The principle purpose of employing this equipment is for coating metals, including bicycle parts, household appliances, aluminium extrusions and much more.

Few benefits of powder coating are mentioned below:

- Emission Of Volatile Organic Compounds Are Reduced By Coating The Metals  

- It is usually Recycled, Facilitating 100% Reusability With the Substance  

- Produces More reliable Waste As Compared To Traditional Usage of Liquid  

- Part Preparation Or even the Pre-Treatment  

Before the powder coating process removal of lubrication grease, metal oxides, mud, oil etc are necessary. There are various chemical and also mechanical ways of removing these substances from the metal surface. The method depends upon the performance dependence on the finished product. In spray application process, chemical pre-treatments involve the use of chromates and phosphates. Phosphating and chromating in the substrate exist in multiple stage. Bonding of the powder on the metal involves cleaning in the pre-treatment process. Sand Blasting is an another way of preparing the counter prior to coating. It can be employed to provide finishing, etching, surface texturing and preparation and degreasing for products manufactured from wood, glass, or plastic. Different powder coating applications can require various ways of preparation for example abrasive blasting ahead of coating. The web consumer market typically offers media blasting services coupled with 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 gun. Negative electric charge is imparted towards the powder. The negatively charged powder might be sprayed on the grounded object by mechanical or compressed air spraying equipment. It is then accelerated towards workpiece by the powerful electrostatic charge. The article is then heated, and also the powder melts right into a uniform film, and is also then cooled produce a hard coating. To accomplish more uniform finish preheating could help but problems can be created as runs brought on by excess powder.

Tribo gun will be the second type of gun which is often used to spray powder on metal surfaces. The powder is first charged by triboelectric friction and these charged powder particles then adhere to the grounded substrate. It takes a different formulation of powder with respect to corona guns.

Fluidized bed method can also be used for Powder coating. To start with the substrate is heated and after that it can be dipped into aerated powder-filled bed. Later the powder sticks and melts for the hot object. Most dishwasher racks are coated with this approach to [http://people.tribe.net/c98a6bab-1faf-4483-97a7-4b34392f5ae6/blog/5111df34-86ce-432f-9a64-95d0ca0087ef powder coating supplies].