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The need for quality hard metal finishes has resulted in the majority of industries shifting from the conventional painting process to the powder coating process. Vehicles, architecture, electronics, and industrial machinery are some of the industries that have been assisted by powder coating due to its increased protection and aesthetics. Here, we will explain the powder coating process step by step so that you know how it is done and why it is the finish process of choice for B2B applications.
Powder coating is a non-wet finish process where an electrostatically charged free-flowing powder is sprayed on to a surface and heat-cured. The end result is a hard, abrasion-resistant, good-looking finish, also scratch-resistant, corrosion-resistant, and chemical-resistant. Powder coating is different from liquid paint in that it does not use solvents and has fewer toxic waste, therefore it is an environment-friendly process.
Good surface preparation will also guarantee a good finish. Oils, grease, rust, and previous coats will reduce the strength of adhesion between the substrate and the powder.
Cleaning: The surface is cleaned using a chemical cleaner or a degreaser.
Rinsing: Several stages of rinsing are utilized to avoid any remnants on the surface.
Etching or Blasting: This is to be carried out either by abrasive blasting or chemical etching to create a smooth, rough surface for enhanced adhesion.
Drying: The parts are dried thoroughly after cleaning, and then moved to the next process.
Why it matters: Maximum adhesion and corrosion protection are obtained from a clean, pre-treated surface.
Here is where the magic of powder coating occurs.
Electrostatic Spray: Powder particles are electrostatically sprayed onto the grounded metallic surface using a spray gun. The charged powder adheres to the surface according to the electrostatic attraction.
Smooth and Level Coating: Trained operators make the coating smooth and flat on all surfaces and in corners.
Materials Used: The powders utilized to powder coat are usually thermoplastic or thermoset polymers, and these are available in numerous colors and finishes, matte, gloss, and texture.
After the powder has been applied, the components are transferred into a curing oven.
Temperature: The coated parts are cured in the oven at around 180–200°C (350–400°F) based on powder chemistry.
Curing Time: Around 10 to 30 minutes.
Chemical Bonding: The powder melts and chemically bonds when it cures to create a hard protective film.
End Result: A hard, even, and smooth surface that lasts longer than the durability and resistance of conventional paint.
Parts are then left to cool to room temperature after curing.
Inspection: Each component is checked for coverage, flatness, and finish quality of the surface.
Testing: Other tests like adhesion, thickness, and endurance can be conducted as per customer specifications.
Greater Durability: Chipping, scratching, and fading resistant.
Cost-Effective: Reduced operational and maintenance expenses in the long run.
Eco-Friendly: No VOCs and minimal wastage.
Customized Finishes: A broad spectrum of colors and textures to meet branding requirements.
Faster Turnaround: Enhanced curing speed and less downtime in industrial applications.
We at SAR Coatings cater to a wide range of B2B clients in various markets such as:
Automotive Manufacturers
Architectural and Building Businesses
Electrical & Electronics
Agricultural Machinery Manufacturers
Furniture and Appliance Manufacturing
Our advanced building is capable of processing anything from small parts to massive industrial compounds with high precision and consistency.
With over a few decades of experience in industrial powder coating, SAR Coatings provides bespoke powder coating solutions that meet the highest quality and performance expectations. Our trained personnel, newest equipment, and dedication to sustainability make us the business partner of choice for Indian companies.
Knowing how powder coating works is the secret to making smart decisions for your industrial or manufacturing requirements. It provides unparalleled protection, visual quality, and affordability. If retrofitting existing components or beginning a new production line, SAR Coatings can deliver the best of the best powder coating solutions that provide long-term returns on investment.
