Powder Coating is a surface finishing process Max Kepler Jersey , applied to metal objects, to produce a hard wearing, long lasting coat.
The powder coat starts as a dry free flowing powder which consists of resins, pigments and hardeners. The dry powder coat is applied to the surface of the metal object, generally using an electrostatic process Byron Buxton Jersey , where the powder coat is sprayed through a positively charged applicator, such as a powder coating gun, onto the negatively charged metal surface. The powder adheres to the surface because of the attractive force of the opposite charges. The powder coated object is then baked in a curing oven where the dry powder melts, allowing it to flow and form a smooth bonded coat. When complete the powder coated surface is transformed into a tough, durable and long lasting finish.
Powder coating can also be applied using a fluidised bed process. The surface of the material to be powder coated is heated and then dipped into a powder filled bed which has been aerated. The powder becomes sticky from contacting the heated surface and then melts to form a coating. Additional heat may be applied to complete the curing process.
A similar fluidised bed process which incorporates an electrostatic charge requires far less powder for the bed and no preheating of the material surface.
Powder coating results are highly dependent upon the preparation taken prior to powder coating. Cleaning the surface of any contaminants such as oil Nelson Cruz Jersey , grease, dirt and rust is important before applying the powder coat. Abrasive techniques such as sandblasting or chemical techniques are used to prepare and clean the surface.
A chemical pretreatment process usually involves a few steps including degreasing, etching, rinsing and finally a conversion coating of chromate or phosphate solution. The conversion coating ultimately helps with adhesion of the powder coat and reduces under film corrosion.
The choice of cleaning and pretreatment method to achieve the best possible finish will vary depending on the substrate material.
The advantages of powder coating as a surface finish include:
– Hard wearing and long lasting. – Scratch, abrasion Miguel Sano Jersey , peel and crack resistance. – Corrosion and some chemical resistance. – Environmentally friendly process e.g. no suspension solvents, no VOC gases, recyclable waste overspray. – Wide variety of finishes can be achieved with many colours and textures available.
Powder coating can be applied to all types of metals including steel, galvanised steel, aluminium Jonathan Schoop Jersey , wrought or cast iron, brass, copper and titanium. Metal products that can be powder coated therefore cover a large rang from a small rivet, nut or bolt, to a large staircase Kirby Puckett Jersey , fence, gate or even a car chassis.
Powder coating is truly a unique surface finish for a large range of applications that offer many benefits. The industry is constantly growing with new methods, equipment and formulations to be used on a larger range of materials.
Well, now you know a little bit more about powder coating. Maybe next time you think about using ordinary old liquid paint as a surface coating for your metal objects, perhaps you might consider the alternative and have them powder coated.
I work in the powder coating industry and frequently have individuals ask me about what I do and how it operates. When I get a chance Minnesota Twins Jersey , I like to compile brief content articles which assist people to fully grasp the approach and the marketplace far better. I definitely get pleasure from what I do and I like educating other people about it.
Powder Coatings
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