When it comes to coating aluminium, achieving industry-leading paint adhesion requires a bespoke pre-treatment process. Many subcontractors coat a wide range of materials—steel, cast iron, glass, MDF, and more—all in the same production run. That often means either constantly switching chemicals (which is costly) or using a “one-size-fits-all” approach that compromises quality.
Not us. We only coat aluminium castings.
Our pre-treatment process is tailored specifically for aluminium alloys, ensuring the best possible bond between paint and surface. It’s this attention to detail that sets us apart—and helps your products stand out.
We’ve invested heavily in our capabilities—casting, CNC machining, measuring and testing, and powder coating—to offer our customers as close to a one-stop-shop as possible. One area we’re especially proud of is our powder coating plant, which was born out of a commitment to doing things properly. Using only quality products like Industry leading powder coating equipment from ITW GEMA to using powder paint from market leaders, AkzoNobel and having a bespoke 5 stage pre-treatment regime, means we can offer optimum paint adhesion to all of our powder coated, aluminium parts.
The basis of excellent powder coating is thorough preparation. The vast majority of powder coating failures can be traced to a lack of a suitable preparation. The pre-treatment process for aluminium alloy is very specific, this is why many volume powder coaters encounter issues as their pre-treatment process has to be a one-size-fits-all approach for the varied materials they coat.
The castings have to be clean and free of oils, grease and other contaminents before the powder is applied.
After the pre treatment stage has finished, the part have to be dried and free from any liquid/residue prior to powder being elecotrstatically applied.
To achieve a good powder paint bond with the substrate a full cure is required. Depending on the type of powder and the mass volume of the part, the paint is cured for approximately 20 minutes at temperatures ranging from 160 to 210 °C.
To get industry leading powder coating paint adhesion on cast aluminium parts, a bespoke pre-treatment process is needed prior to painting. Hallams invested heavily in an automated paint plant as many of our sub-contractor powder coating suppliers were dealing with a wealth of different materials, such as of steel/cast iron, glass, MDF and other materials, sometimes in the same production run. We needed a dedicated pre-treatment regime, specifically designed for aluminium alloy castings. Today, we think we’ve got that off to a fine art as we can offer powder coated parts that can withstand some of the most demanding environments.
Years of experience and a commitment to high quality for the customer underpin Hallam’s expertise in powder coating. Hallam’s close working relationships with leading powder suppliers, including AkzoNobel, ensure that for any project, Hallam can achieve the precise finish required, using only the best available materials. Accordingly the company’s powder coating processes serve a diverse range of sectors in the economy including automotive, architectural, construction/industrial, medical as well as the consumer goods market.
Whether you are seeking powder coating services to powder coat low volume projects or prototypes or have higher volume requirements, 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 under the control of tailored process programs. The powder coating plant can accommodate a wide of sizes, configurations and materials, making Hallam the ideal partner for both high-volume and smaller bespoke projects.
Still proudly family-run after 55 years, we believe in delivering service that’s personal, not just transactional.
When you work with us, you’re never just a number. From your very first contact right through to our despatch team, you’ll be looked after by people who genuinely care.
What we offer.
Hallam provides high-quality powder coating services to customers across the UK, supplying a wide range of finishes to meet specific requirements for challenging environments and aesthetics. Hallam guarantees the highest quality for both functional and aesthetic purposes. Products with powder coating finishes with spectacular high resilience include ocean-going yacht portlights, urban space signage, walkway control systems and lighting all subject to constant road spray, together with balcony fittings on high-rise tower blocks. Aesthetic requirements are emphasised in finishes for office equipment, D-I-Y tools and indoor lighting, where an array of colours, textures and properties are available.
Although we can powder coat a range of materials from ferrous and non-ferrous metals to special plastics and fibreboards, our 5-stage pre treatment process is bespoke for aluminium alloy castings. The products and components we powder coat are for a diverse range of market sectors including automotive, marine, medical, construction and consumer goods. Guaranteed high resilience finishes are provided for products in challenging environments including salt spray and hazardous chemical exposure.
The process involves extensive cleaning and pre-treatment of the aluminium component or product, which is followed by the application of powder using an electrostatic spray gun. Items coated are cured in the system oven to create a resilient and long-lasting finish.
Yes, we are fully equipped to undertake high-volume production for both industrial-scale powder coating and small-scale projects. The facilities at our factory are designed for efficiency whilst maintaining consistent high quality.
Hallam offers comprehensive powder coating services within the UK. Our powder coating UK solutions cater to both local clients and large-scale projects. Contact us to discuss your specific needs.
We provide a wide selection of finishes:- high gloss, metallic, textures, and bespoke colours specially formulated by our principal supplier, AkzoNobel. We can work with you to develop and create the perfect finish for your project.
