what is powder coating

Powder Coating Systems – How Does Powder Coating Work?

Here at TD Finishing, we are proud to be one of the country’s leading suppliers of powder coating equipment for sale. If your business would like to invest in such facilities, you may be looking to have those all important questions answered, to begin with. For example; ‘what is the powder coating process?’ and ‘what is a powder coating system? and how does powder coating works?‘ As highly experienced experts in powder coating systems, we’ll be able to answer all of these questions and more. Therefore, when the time is right to invest in a powder coating line, you will know exactly what to look for.

What Is Powder Coating And How Does It Work?

Powder coating is a finishing process that you apply to metal surfaces. A powder coated surface will be more resistant against corrosion, scratches, wear and tear, chipping, and fading. Especially compared to a surface that doesn’t have this advanced protective finish. It consists of a flowing, fluidised powder that is baked in a coating oven. The powder then flows as a liquid. Then, it cools to form a hard and durable finish. TD Finishing powder coating equipment is used to paint everything – from bicycles to car parts and domestic boilers to Architectural aluminium. There are usually three stages to the powder coating application.

Stage 1

The first stage involves preparing a surface for powder coating. This can be done in several ways, depending on the final finish requirements. The two most common ways are hand wiping with cleaner and shot-blasting followed by a full online pre-treatment plant. Our Pre-treatment plants work in one of two ways, an online spray for conveyorised plant or an automated dip tank with gantry system. The system will allow you to load the basket with longer or higher quantities of material. The powder coating pre-treatment cleans and prepares the surface of the substrate. It allows for good, reliable adhesion of the powder coating. TD Finishing can assist you with working out the correct pre-treatment regime for your business. This stage is followed by the use of a powder coating drying oven.

Stage 2

Once dried and cooled, the second stage involves the careful application of the powder coating. Electrostatically charged on leaving the gun, the positive (+ve) coating is attracted to the grounded substrate material. It is then held in place by the electric force. The application equipment ensures sufficient charge of the particle, as well as field strength. This prevents the powder bouncing off or falling from the substrate before curing. For fluidised beds, or fusion bonded epoxy coatings, the product needs heating during the drying stage. This is for the purpose of melting the powder into a green-cured state before moving to stage three.

Stage 3

Finally, once the substrate is fully coated, the product needs heating in the oven to the required temperature. The product then dwells until the powder has finished flowing across the surface. The times and temperatures will vary depending on certain factors. These factors include the powder, thickness or gauge of material and product weight. But, typically around 180-200 degrees for 15-30 minutes is sufficient. At this part of the process, it is vital to ensure the oven’s temperature is enough to cure all the products evenly. td have many years’ experience in powder coating equipment. We understand the importance of air movement within the oven whilst simultaneously balancing the flow. Therefore, avoiding any significant disturbance of the powder prior to jelling.  

Powder Coating Equipment for Sale

We have decades of experience as powder coating equipment manufacturers. TD Finishing supply online conveyorised powder coating systems, manual & monorail conveyors, power & free systems, standalone box ovens. We also supply infrared ovens for simple one-dimensional products, or as a pre-gel system. This prevents cross contamination during a colour change. In addition to the above, we supply equipment for wet spray systems too. No matter what type of plant you are looking for, we’ll work hard to find you the perfect solution for your requirements.

Contact us Today

For more information on our powder coating systems for sale, head to our website today. Or, call 0121 520 8884 to speak to a member of our helpful and friendly team. We’ve invested in some of the worlds best powder coating equipment so everything we deliver is top quality.

If you enjoyed reading this blog about how powder coating works, you may also like to read our previous article on powder coating plants.

powder coating oven gas burner

Modulating Gas And Air Burners At TD Finishing

We are one of the country’s leading suppliers of powder coating plants. Therefore, we understand the importance of efficiency in heated processes. As well as, the role plant design has on optimising temperature control. Accurate temperature control is key to achieving tight tolerances in temperatures. Fully modulating systems allow much greater control over traditional “High-low” burners. All TD Finishing curing ovens and powder coating systems are supplied with modulating Gas and Air Burner. As well as, all of our drying ovens and any heated stages of the spray pre-treatment systems. 


Latest APL Technology

The drying, pre treatment systems and powder coating oven gas burner uses the latest ‘Air Pressure Lead’ (APL) monoblock gas valve technology. Changes in process heat demand are transmitted to the burner by a modulating signal. This connects to a motor speed controller which varies the speed of the burner combustion air fan. It increases or decreases the burner windbox differential air pressure. As a result, the package gas burners offer flexible, high turndown control for process heating applications. Giving minimum running consumption during production, but with high-power output available on demand. Particularly during system start-up. We can offer 24/7 timers for automated system heat up prior to manufacturing operations.

Related: Industrial Drying Oven Solutions at td finishing


Safety is a Key Feature

Safety is another key feature of our package-gas modulating burners. As such, the burners comprise of a burner windbox, combustion air fan, a compact monoblock air / gas valve gas train and burner controls. Including the combustion air fan motor speed controller, mounted within a control panel. For ease of access during use, we can supply our burners with a remote panel if you require one.
Standard control items include a burner controller ignition transformer and differential air pressure switch. Two 3-way air valves perform safety checks on the air pressure switch in both open and closed modes each time the burner fires. This allows the burners independent operation of the combustion air fan in conjunction with oven /dryer main recirculation fans.


Individual Control

On our powder coating systems, you’ll find a modular immersion tube burner. This includes a cylindrical burner assembly that can withstand typical tank heating operating environments. Alongside this, a compact monoblock gas valve train, burner controls mounted in a protective control box, exhaust damper and an exhaust fan which can be coupled to multiple burner installations all the while maintaining individual control. The burner fires through a submersed stainless steel tube designed to give optimum surface area and heat transfer through the process.

Related: Finishing Plant Replacement | td finishings

Contact Us Today For Your Curing Oven Gas Or Air Burner

Are you looking for a powder coating oven gas burner or to find out more information about our coating systems? Then head to our website today. Alternatively, you can call 0121 520 8884 to speak to a member of our helpful and friendly team.
Or, email info@tdfinishing.co.uk.  

Furthermore, if you enjoyed reading this blog you may also enjoy our previous blog on Dip Pre-treatment Systems.

Power & Free Conveyorised Powder Coating Systems

Conveyorised Powder Coating Systems – Power & Free

Are you looking for a powder coating conveyor plant? TD Finishing are proud to be powder coating equipment manufacturers. Our conveyorised powder coating systems are incredibly popular. However, we have a wide variety of powder coating equipment for sale. If you require further flexibility, you may wish to invest in Power & Free. This is something that we have a vast amount of experience with. The system uses two tracks, one above the other. Power & Free allows us more flexibility with your system. The top or “power” track, contains a drive chain. This chain enables the movement of product flight bars. These are located within the lower, “Free” conveyor track.

TD Finishing have an impressive portfolio of clientele. In fact, we have provided powder coating systems to businesses all over the world. As a result, we have become a very experienced and versatile business when it comes to providing sites with powder coating solutions.


Conveyor Systems

By using switches and multiple drive chains, you allow production to flow around the factory space better. They also remove the rigidity of a single chain monorail conveyor. On a traditional monorail conveyor system, the product is restricted to the single path of the drive chain. With Power & Free, a product can bypass certain processes. It can deliver products to a particular area of the factory for assembly, inspection or packing. For a conveyorised powder coating line this means the product can be treated individually depending on its specific process requirements.  


Bespoke Solutions

In a recent Fusion Bonded Epoxy installation, the client’s product could vary in thickness by up to 10mm. Following spray pre-treatment, the drying oven was also utilised as a pre-heat. The flexibility of the Power & Free Conveyorised Powder Coating Systems means it is possible to vary the dwell time in the oven to ensure sufficient heat is transferred into the product. The variable transfer speed also gave the flexibility to deliver the product to the powder coating booth before it loses the heat required to fuse the powder primer. The variance in product gauge also needed a track system that could allow for variable cooling time before applying the topcoat powder.  


Overhead Conveyors

A Power & Free system is good for heavier products. This is because it makes loading and unloading operations safer. The power track delivers the flight bar to the stationary load or unload station. The operator is then free to load very heavy products. This is usually with a loading crane or integrated drop section. Once loaded, the flight bar is released back into the coating system. The stationary flight bar means the line density can be increased easily. This is ideal for lighter products. 


High Specifications

Our powder coating systems for sale can meet a wide range of requirements. In fact, we have lots of efficient drying and powder coating ovens available too. Products are loaded into the ovens in echelon. As a result, the amount of oven volume is minimised. This space is usually empty. You can use the ovens to pre-heat or cure paint without altering the process times the flight bar spends in the pre-treatment plant. Spray pre-treatment systems have set treatment time requirements. These can be kept consistent with Power & Free regardless of the product thickness. 

There is the option to supply TD Finishing powder coating equipment with Power & Free Conveyorised Powder Coating Systems. These systems include the Pretreatment plant, drying ovens, curing ovens, infrared oven and spray booths.  Regardless of what you choose, you can be sure that our high specification systems will not let you down.


TD Finishing Go The Extra Mile

Still not sure which system is best for you? TD Finishing has decades of experience when it comes to powder coating plants. We will talk you through all of the suitable solutions that we have here. Moreover, we will make sure we equip you with everything you need to know. Then, you can use this knowledge to make a well-informed decision on the right solution for you and your business. However, we will always be on hand to help you determine exactly what product will meet your needs the most. We have an established reputation, a worldwide service, and modern up-to-date systems. With this in mind, you can trust TD Finishing to fully enhance your business and the services that it has to offer. 

For more information about our powder coating plants, visit our website today. Or, you can call 0121 520 8884 and speak to a member of our helpful and friendly team. We will always go the extra mile to find you the perfect solution. If you have found this blog helpful, you may wish to read our previous blog on What is Powder Coating?

manufacturer of powder coating systems

TD Finishing Enter 20th Year

October 2021 sees TD Finishing enter their 20th year of continuous trading. This is a milestone that also sees the company prepare for the next 20 years with an extensive succession plan. Therefore, to ensure that TD Finishing remains the UK’s leading manufacturer of powder coating and paint systems


TD Finishing | Manufacturer Of Powder Coating And Paint Systems

Dale Harris discusses the future plans:

“TD Finishing was founded in 2002 following years of working in the finishing industry. At that time, there was gap in the market for high quality finishing plant manufacture and we knew that was something that we could offer. Over the years we have grown and are recognised as a high-quality UK manufacturer. This is something that we want to continue for many more years to come.

We decided that we want the company to move forward in a way that maintains the knowledge and experience that we have built up and continues our reputation within the industry. We knew that this would require a comprehensive and long-term succession plan, something that we started to put into place five years ago. As the succession planning and training package developed, we went on the hunt for the right candidates. And three years ago, we welcomed Dave Harris to the team. Dave brought a lot of design and project management experience, something that we knew would be very important as we move forward. Earlier this year saw Mike Shawcross join us to focus on technical sales. Again, Mike brought many years experience from within the industry and we had worked on many projects together with great success.

Successfully passing on the baton requires a long-term approach with the right people. We are already three years into this with the same to come. And we are planning to continue the handover for as long as it takes with no deadline or fixed timescale. We have worked very hard to build TD Finishing into what it is today and will work just as hard to ensure that it continues into the future.”

manufacturer of powder coating systems -TD Finishing


TD Finishing, The Next Chapter

Preparing for the next chapters in TD’s history has also seen a rebrand with a new company logo and website. This coincides with a range of new innovations, including the recently redesigned TD Connect plant PLC control system. TD Connect is aimed at improving the user experience. In addition, whilst giving much more useable data in a format that is easy to understand and manage. For instance, it comes with options for remote data access, via a built in VPN, that can be hard wired or utilise a mobile data connection.

Other developments centre around efficiencies and sustainability in the powder curing oven. The latest introduction to the product range is a true waste heat recovery system. It is designed to supplement the heating on the pretreatment tanks. This system takes pure waste heat rather than using the heat inside the oven. Therefore, maintaining the internal temperature without compromising efficiency. Furthermore, other news will follow soon on this and all other new developments.

Exciting times lie ahead for TD Finishing, manufacturer of powder coating systems. To find out more visit tdfinishing.co.uk or our social media feeds, links to these can be found on our website.

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