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What is powder coating?
Powder coating is a widely used surface coating technique that delivers a durable, uniform, and aesthetic finish across a variety of materials. It has become a preferred method of surface treatment in industries ranging from automotive to architecture thanks to its efficiency, environmental benefits, and exceptional performance. In this article, we’ll break down what powder coating is, how it works, and why it’s an ideal surface finishing choice for many applications.
What is powder coating?
Powder coating is a type of dry finishing process where a fine powder made of resin and pigment is applied to a surface electrostatically, then cured using heat. This results in a hard, protective layer that’s more resistant to impact, corrosion, and fading than many traditional liquid paints. Unlike liquid coatings, powder coatings contain no solvents, making them a more environmentally friendly surface coating option.
How powder coating works
The powder coating process generally involves three main steps:
- Surface preparation: Before applying the coating, the surface is thoroughly cleaned and pre-treated. This may involve degreasing, abrasive blasting, or chemical treatment – depending on the material – to ensure good adhesion and long-term durability. Proper surface treatment is key to preventing defects and ensuring a consistent finish. Take a look at our surface preparation guide to help you achieve this.
- Powder application: The coating powder is applied using a spray gun that gives the powder an electrostatic charge. The object being coated is grounded, attracting the powder to its surface. This ensures even coverage and minimises waste.
- Curing: The coated item is placed in an oven, where the powder melts and chemically reacts to form a solid, durable layer. This curing process is what gives powder coating its superior strength and finish quality.
Benefits of powder coating
Powder coating offers a wide range of advantages over traditional painting and other surface finishing methods:
- Durability: Highly resistant to chipping, scratching, and corrosion
- Uniform finish: No drips or runs, even on complex shapes
- Eco-friendly: Contains no VOCs (volatile organic compounds)
- Cost-effective: Minimal waste and lower long-term maintenance
- Customisable: Available in a wide range of colours, textures, and finishes
Common applications
Powder coating is used in virtually every manufacturing sector due to its versatility and performance. Common applications include:
- Automotive parts and bodywork
- Agricultural and industrial equipment
- Furniture and appliances
- Architectural elements like railings and window frames
- Metal fabrications and components
Whether it’s protecting heavy-duty machinery or giving consumer goods a polished look, powder coating is a trusted surface treatment across the board.
Is powder coating right for your project?
If you need a long-lasting, high-quality surface coating for metal, powder coating is an excellent choice. It offers superior protection, a wide range of aesthetic options, and environmental benefits that appeal to modern industries. The key to success lies in proper surface preparation, selecting the right powder material, and ensuring precise application and curing.
Need powder coating equipment or advice?
Whether you’re upgrading your facility or just starting with powder coating, we offer a full range of high-quality powder coating and surface preparation equipment designed for professionals in manufacturing, construction, and industrial sectors. Our experts are on hand to provide tailored advice on surface treatment systems, ensuring you choose the best solution for your needs. Explore our advanced spray solutions today, or contact our team for expert guidance on achieving the perfect finish every time.