What Is Powder Coating Equipment?

This is a form of coating equipment that assists in applying powder. Powder coating equipment does not involve solvents in the processes. The coating is carried out electrostatically which is then passed under heat, allowing the powder to flow and form a "skin". It can be a thermoset polymer or possibly a thermoplastic. Generally, it can be employed to give a hard finish which is harder than the conventional point that was formerly used. The key function of employing this devices are for coating metals, for example bicycle parts, household appliances, aluminium extrusions and more.

Few features of powder coating are mentioned below:

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

- It generates Much Thicker Coating As compared with Traditional Liquid Coating  

- It Can Be Recycled, Facilitating 100% Reusability From the Substance  

- Produces Less Hazardous Waste As compared with Traditional Use Of Liquid  

The Powder Coating Equipment operate in following basic processes:

- Part Preparation Or The Pre-Treatment  

Prior to powder coating process removal of lubrication grease, metal oxides, mud, oil etc are necessary. There are several chemical as well as mechanical methods of removing these substances in the metal surface. The technique will depend on the performance requirement of the end product. In spray application, chemical pre-treatments involve the use of chromates and phosphates. Phosphating and chromating of the substrate occur in multiple stage. Bonding of the powder towards the metal involves cleaning from the pre-treatment process. Sand Blasting is an another method of preparing the outer lining just before coating. It can be accustomed to provide finishing, etching, surface texturing and preparation and degreasing for products created from wood, glass, or plastic. Different powder coating applications can require other methods of preparation including abrasive blasting ahead of coating. The internet consumer market typically offers media blasting services along with their coating services at additional costs.

Commonly electrostatic gun or corona gun is used for utilizing the powder coating to metal objects. Here, lets discuss the working of electrostatic gun. Negative electric charge is imparted on the powder. The negatively charged powder is then sprayed towards the grounded object by mechanical or compressed air spraying equipment. It is then accelerated towards workpiece with the powerful electrostatic charge. The article is then heated, as well as the powder melts in to a uniform film, and is then cooled to make a hard coating. To realize more uniform finish preheating might help but problems may also be created as runs due to excess powder.

Tribo gun will be the second kind of gun that is utilized to spray powder on metal surfaces. The powder is first charged by triboelectric friction and the charged powder particles then follow the grounded substrate. It will take another formulation of powder when it comes to corona guns.

Fluidized bed method can also be used for Powder coating. In the beginning the substrate is heated and then it can be dipped into aerated powder-filled bed. Later the powder sticks and melts on the hot object. Most dishwasher racks are coated using this technique of [http://fredgkbd.deviantart.com/journal/Powder-Coating-Can-Be-A-Revolutionary-471359735 powder coat guns].