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paint stripping
Paint Stripping for Cars by Surface Processing
Surface Processing Ltd
Unit 20, Sovereign Works, Deepdale Lane
Dudley, West Midlands DY3 2AF
Intl. + 44 (0) 1384 242010 | Fax: +44 (0) 1384 242090
01384 242010
 
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TRUSTED BY PROFESSIONALS

Trusted by Professionals

Derek's Mini Centre

Bringing Minis back to life

Recommended by the National and British Mini clubs, Derek’s Mini Centre has been restoring classic Minis since 1990. By using original parts or highquality reproduction components and drawing upon 40 years’ of Mini experience, Derek’s aim is to provide a restoration service that creates exceptional Minis that last.

Delivering restoration results

Many restorers rely on media blasting to remove rust but such abrasive methods can damage panels and pockets of rust in hard to reach areas remain unaffected. “Getting rid of rust is one of the first things we consider in any restoration project,” says Andy Birks; “But it is important to understand how to reach hidden areas of rust to prevent corrosion roblems.” Professional restorers of classic cars make significant use of rust removal techniques and prevention technologies to provide the best possible start to any body restoration.

Classic Mini Paint Stripping

A deeper clean

SPL's process can effectively remove paint, grease, oil, underseal, filler, adhesives and the majority of all rust from panels, parts and complete body shells. By following SPL's guidelines, the immersive and gentle process can attack corrosion even in hidden areas, whilst also avoiding the issues associated with blasting . By carefully considering each shell in turn, SPL can help the restorer achieve the best possible results.To get the best from immersion cleaning, you really need to understand the process,” declares Birks; “Immersion can reach areas such as the ‘u-shaped’ rear trim holder and if properly prepared, box sections where rust can harbour.”

Trusted, long lasting protection

“Our restoration projects aim to achieve a bodywork finish has the durability found in modern cars yet captures the appeal of the original Minis,” explains Birks. Derek’s sends the cleaned and repaired Mini bodyshells to SPL for an e-coat, a modern anti-corrosion process used by 97 percent of modern car makers; “E-coating is an effective way to get corrosion protection deep into the hidden and difficult to reach areas of original Minis, making SPL’s immersion techniques a key part of our restoration process,” Birks adds; “It provides the protection that ensures our Minis stay looking great.”

Classic Mini Restoration

A system to clean and protect

The SPL Chemical Immersion Cleaning process effectively removes paint, grease, oil, underseal, filler, anti-flutter, adhesives and the majority of all rust from panels, parts and complete bodyshells. With close to 3000 shells treated, it is widely accepted as the safe and trusted alternative to all types of media blasting. Once clean, SPL offers advanced corrosion protection in the form of electrophoretic coating (or e-coating) to prevent its return.


Classic Mini Restoration

Mini Rot Spots

Original Minis were prone to rust. Corrosion on ‘A’ panels, front panels and boot floors is easy to spot, but rust on rear subframe mounts and inner sills is much harder to identify and more expensive to fix. Using SPL’s process ensures nearly all of rust is removed from the shell, providing the best basis for a restoration. Coupled with the firm's e-coating process, SPL ensures the best level of protection.

 

The SPL Process

The Cleaning and Protection Processes

Paint Stripping Mini 1

Stage 1. Decontamination

Heavy organic coatings including underseal, filler, mastic sealants, anti-vibration materials and adhesives are broken down using SPL’s advanced dehydration process.

   
Paint Stripping Mini 2

Stage 2. Organic Material Removal

The remaining organic compounds such as paint, grease, oil and carbon are now removed in an alkaline hydrocarbon solution for prior to a water rinse.

   
Paint Stripping Mini 3

Stage 3. Rust Removal

Corrosion is now removed via immersion in a dilute solution of inhibited hydrochloric acid. Inhibitors prevent the acid from attacking ‘good metal’, only breaking down the corrosion. Tilting the shell backand- forth within the solution improves penetration and helps displace air locks. SPL is happy to advise the best ways to attack inaccessible areas on even rare or unusual cars.

   
Paint Stripping Mini 4

Stage 4. Passivation Rinse

An advanced agitated alkaline neutralisation and passivation immersion process follows. To ensure maximum penetration, a neutralising preservative is applied by hand, into the seams and recesses leaving the shell bright and stable. SPL recommends the shell be weld repaired at this stage, before a repeat of stages 3 and 4 prior to electrophoretic coating.

The Electrophoretic or E-Coating System

E-Coat Mini 1

Stage1. Pre-Treatment

A thorough eight step process covering cleaning, conditioning and phosphating. The cleaning process utilises varying strength alkaline silicate solutions at 50ºC to remove oil and grease followed by water rinses. Following a conditioner rinse, the shell is immersed in a bath of zinc, manganese and nickel (tri-cation) phosphate solution. Water rinses remove the excess phosphate solution and finally the shell is rinsed with demineralised water.

   
E-Coat Mini 2

Stage 2. Electrophoretic Deposition

Next, the shell is fully immersed in a 33ºC, 55,000 litre PPG paint t a n k . Experience ensures a highly uniform paint film of between 22μm and 28 μm with excellent bond strength is achieved as an electrical current of around 400 volts and 600 amps is passed through the shell. An Ultra Filtrate molecular resin solution rinse is then applied prior to curing..

   
E-Coat Mini 3

Stage 3. Curing

The shell passes through a high temperature oven at 180ºC for 45 minutes. This will cross-link the polymer resin allowing the coating to become smooth and continuous. Crucially, the controlled heat drives out residual moisture from within the seams and box sections.

Surface Processing Ltd, Unit 20, Sovereign Works, Deepdale Lane, Dudley, West Midlands DY3 2AF
email: sales@surfaceprocessing.co.uk | Telephone: 01384 242010
Rust & Underseal Removal

Surface Processing Ltd, Unit 20, Sovereign Works, Deepdale Lane, Dudley, West Midlands DY3 2AF | tel: 01384 242010 | email: sales@surfaceprocessing.co.uk
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