Powder Coating Services

Hallam’s powder coating facilities

Hallam’s powder coating plant benefits from the company’s manufacturing expertise in many ways. For example, the special carousels and housings needed to suspend components through the plant are designed and manufactured in-house. Hallam’s resources are also deployed in ensuring that the plant is maintained in excellent condition and that rigorous quality checks are applied.

Hallam also adopts a leading edge approach in applying other protective and decorative surface finishing treatments to metallic components or products through the powder coatings service. These treatments include anodising and plating together with other novel electrophoretic processes.

Powder coatings produce high specification finish which is consistent, hard, abrasion resistant (depending on the specification) and tough. The choice of colours, finishes and characteristics (e.g. antibacterial powders) is vast, as special powders can be produced by the powder manufacturer. Du Pont and AkzoNobel also produce a wide standard range of textures, colours (including “flecked” finishes”) and gloss levels.

Preparation of castings, extrusions and machined parts in the powder coatings process

The basis of any good powder coating is preparation. The vast majority of powder coating failures can be traced to a lack of a suitable preparation. The preparation treatment is different for different materials. In general, for all applications the preparation treatment for aluminium is as follows: Clean, Rinse, Etch, Rinse, Phosphate, Rinse.

Oils and greases are removed in weak alkali or neutral detergent solutions and the surface is etched to remove heavy oxides. After rinsing, the aluminium is dipped into a phosphate solution to form a conversion coating on the aluminium. This film is chemically attached to the aluminium. After rinsing the aluminium is finally rinsed in demineralized water.

The powder coatings powder is applied with an electrostatic spray gun to a part that is at earth (or ground) potential. Before the powder is sent to the gun it is fluidized to separate the individual grains of powder and so improve the electrostatic charge that can be applied to the powder and ensure the powder flows more easily to the gun.

Because the powder coating particles are electrostatically charged, the powder wraps around to the back of the part as it passes by towards the air offtake system. By collecting the powder, which passes by the job, and filtering it, the efficiency of the powder coatings process can be increased to 95% material usage. The powder will remain attached to the part as long as some of the electrostatic charge remains. To obtain the final solid, tough, abrasion resistant powder coating, the powder coated items are placed in an oven and heated to temperatures that range from 160 to 210 °C (depending on the powder). Under the influence of heat, a thermosetting powder goes through 4 stages to full cure.

Comprehensive Powder Coating Services in the UK

Hallam provides high-quality powder coating services across the UK, supplying a wide range of finishes to meet the needs of your specific project. Hallam guarantees the highest quality for both functional and aesthetic purposes. From being a leading powder coating company , our services range further than just looking great because we also specialise in finishes with functional properties, including antibacterial coatings, suitable for various materials like ferrous and non-ferrous metals, specialised plastics, and fiberboards. If you’re looking for the best powder coating UK solutions—from professional powder coating black to an array of colours and textures—Hallam has got you covered.

High Volume Powder Coating Capabilities

Whether you are seeking powder coating services to powder coat low volume projects or need bulk for industrial powder coating, Hallam is proficient in handling low or high-volume production. Special carousels and housings ensure efficient handling of components, as each item passes into the fully automated coating booth with precision. Hallam has designed the powder coating plant to accommodate various sizes and configurations, making Hallam the ideal partner for both high-volume and bespoke projects.

Our UK powder coating process

Hallam established its state-of-the-art powder coating facilities in 2008, outfitted with advanced, computer-controlled technology. This fully automated process starts with multi-stage cleaning and pre-treatment to ensure all surfaces are optimally prepared for coating. For powder coating aluminium, powder coating steel, and other metal powder coating applications, the process involves cleaning, etching, and rinsing, followed by the application of a phosphate solution to create a conversion coating that fosters adhesion and durability. The powder is then oven-heated after application by an electrostatic spray gun, which eventually results in the tough, abrasion-resistant finishes that can survive extreme conditions.

Expertise in Powder Coating

Years of experience and a commitment to quality underpin Hallam’s expertise in powder coating. As a leading powder coating company, we provide additional surface treatments such as anodising and plating. Our collaborations with top coating powder suppliers, including AkzoNobel, ensure that for any project we can achieve the precise finish required using only the best available materials. From powder coating black to achieve slick, fashionable finishes to custom textures and colours, we offer facilities to meet exact customer needs. The company’s powder coating processes serve the automotive, architectural, and consumer goods markets.