Definition of industrial powder coating
Industrial powder coating is a type of coating process that involves the application of dry, colored powder onto a substrate surface. The powder may be comprised of different materials, including polyester and epoxy resin binders.
Once applied, the powder is cured and then goes through a curing process to form a rigid protective barrier over the substrate. This coating can offer superior protection from corrosion and wear, and an attractive finish for any industrial product.
Advantages of Industrial Powder Coating
Enhanced aesthetic impact compared to other coatings
Industrial powder coatings can provide an aesthetically pleasing look to any product or surface. The powder can be applied in a wide variety of colors and finishes that not only look attractive but also have the ability to last for many years.
Unlike other types of coating, industrial powder coatings do not require a clear topcoat or waxing application in order to maintain their appearance. The consistent texture achieved by powder coating yields an even finish that has better resistance against wear and corrosion than other coatings.
Increased level of durability and protection
Industrial powder coatings also offer a level of durability and protection that exceeds other coating processes. The special blend of materials found in the powder provide a strong barrier against corrosion, which protects the underlying substrate from damage over time.
Also, the powder creates an incredibly hard surface that is highly resistant to wear, chipping, and scratching. This makes it ideal for products or surfaces that may need to withstand tough conditions and extended periods of use.
Cost savings due to less use of solvents, thinner, and clean-up materials
Industrial powder coatings provide a cost-effective solution when compared with other types of coating processes. It requires less use of solvents, thinners, and clean-up materials, meaning there is no need to purchase and store an extensive inventory of hazardous materials.
As a result, production costs are significantly reduced as these additional costs associated with other coating processes are eliminated or minimized.
Plus, the time taken for curing the powder is much shorter than other coating processes, leading to faster turnaround times and savings in labor costs.
Application Techniques for Industrial Powder Coating
Liquid spraying
Liquid spraying is a popular technique used to apply powder coatings. This process involves spraying a liquid suspension containing powdered material onto the surface of the substrate.
The powder mixture is then heated in an oven, causing the liquid to evaporate and leave behind a smooth coating on the substrate. The advantage of this method is that it provides a uniform film thickness with fewer defects compared to other methods, such as electro-static or tribo-charging.
Because there are no electrical charges involved, it is safer for operators when compared to other processes.
Electrostatic application
Electrostatic application is a process by which an electrical charge is applied to the powder particles to cause them to adhere to the substrate when sprayed. The electrostatic effect occurs when electrons from the charged powder particles repel each other, causing them to be attracted to the grounded substrate.
This method allows for precise control over film thickness and reduces waste compared to other processes, making it a popular choice for industrial powder coating applications.
The electrostatic application can be used to coat complex or recessed surfaces due to its ability to evenly disperse the powder particles over any surface shape.
Conclusion
Industrial powder coating is a fast, efficient, and cost-effective solution for many industrial applications, offering a wide range of benefits to businesses. It is highly durable and offers good protection against abrasion, corrosion, and chemical damage.
Furthermore, it can be applied in various ways including liquid spraying and electrostatic application, allowing for precise control over the film thicknesses and improved coverage with fewer defects. All these advantages make industrial powder coating an ideal choice for many industries looking for a reliable finish.