We offer powder coating in all colours, for a varied service which meets customer expectations. Cast products are pre-treated prior to powder coating to ensure a high quality and professional finish is attained.
The experienced team at H&J Speake are happy to talk to our clients regarding our powder coating finishing service, and which finish is best for their unique product. Powder coating offers enhanced product durability, longevity, and aestheticism, however may not be suitable for all product applications.
Our family-run business, throughout our decades of establishment, has built up industry knowledge and is able to offer an advisory service which best guides our clients through which of our finishing services is most appropriate for them.
Our powder coating service is available for both zinc and aluminium high volume cast products, of various weights. With experience providing components for door and window hardware, leisure, and other sectors requiring enhanced durability and aestheticism, H&J Speake’s bespoke powder coating ensures our British manufactured goods meet all project specifications.
If powder coating is not a suitable finishing method, H&J Speake’s flexibility when working with cast components ensures we can offer various other alternative finishes, working hand in hand with clients to determine the best processes for them.
This is all backed up with full delivery of products, ensuring parts are guaranteed to be delivered on time.
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Powder coating types include epoxy, polyester, polyurethane, and acrylic - the substance used depends on the requirements of the application. They can also be categorised into two distinct types: thermosets and thermoplastics coatings.
Thermoplastics, such as PVC, soften when heated and solidify once cooled. Therefore, making a thermoplastic coating unsuitable for high temperature environments.
Thermoset powder is created through non-reversible chemical bonds - which means it does not soften when exposed to heat, making it the more suitable option for high temperature environments.
Powder coating is used to improve the durability of components; it is essential that it has increased resistance to scratches, abrasions and chips, and extreme weather. The durability of powder coating is based on the strong chemical bonds which makes it suitable for machinery and everyday items, meaning powder coating can last up to 20 years. However, this is dependent on the application, and certain environments can catalyse wear.
During the powder coating process, parts must first undergo a thorough cleaning to ensure there are no remains of oil, dirt, or other surface impurities.
The powder coating is then applied to the part through various methods, though an electrostatic gun is the most common way of applying the spray. The gun negatively charges the powder, before releasing it with a jet of compressed air onto the part. This is then cured, to create an even coating, before cooling which hardens the coat.