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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

Cropredy Bridge Garage

Jensen Specialist

Since its inception and for the last forty years, Cropredy Bridge Garage has exclusively serviced, maintained, restored and sold Jensen cars, from the Interceptor range, 541s and C-V8s to Jensen-Healeys.

All-round Expertise

SPL’s cleaning and protection processes safeguard both cars and reputations: because it is the only mono-brand Jensen specialist on the market, Cropredy Bridge Garage relies only on the very best experts, like SLP, to contribute to their good name. “SPL delivers the very basis upon which to build, refurbish and return any Jensen to its former glory,” says General Manager Gregg Alvarez, “We need to ensure results which will last over time. Our entire range of restoration and component manufacturing activities relies on SPL’s craftsmanship.”

Ninemeister Porsche

International Demand

Cropredy Bridge Garage has a precious connection with iconic brand Jensen both in the UK and elsewhere in the world: the specialist’s comprehensive restoration and preparation skills are in demand from the UK, across Europe, the USA and Australia. “The chemical cleaning process carried out by SPL is the safest and most appreciated method,” says Alvarez. “We are in the most sophisticated and demanding of markets, therefore cannot afford to disappoint.”

Teamwork

As work carried out to the highest standards requires both in-house specialised personnel with decades of experience and top-drawer suppliers, “SPL is Cropredy’s choice,” adds Alvarez, “All the ground-up restoration projects carried out by Cropredy Bridge start with an SPL visit. SPL’s contribution is fundamental to fight rust and rust damage.” The specialist acknowledges that the SPL procedure may be labour-intensive and time-consuming, yet is the only acceptable route to the desired results. “Given the premium carried by immaculate vehicles which have undergone thorough restoration, SPL’s processes add value to the owners’ investment, becoming an investment in its own right,” adds Alvarez.

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.

Porsche Restoration

Interceptor Rot Spots

All original Interceptor parts are made of thick steel, which is a minimum of 1.6mm (outer panels are 20swg steel/0.9mm.). Gregg Alvarez says: “The infamous Interceptor side-members are the first area to check; because of their location (behind the outer sills) they can be time consuming to repair - removing the outer sills often exposes complete and terminal corrosion. Similarly, moisture gets trapped under the outer edges of the vinyl roof, and the edges of all body panels and the interior and boot floors are the common Interceptor corrosion trouble spots. All the ground-up restoration projects carried out by us, at Cropredy Bridge, start with an SPL visit.”

 

The SPL Process

The Cleaning and Protection Processes

Paint Stripping Porsche 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 Porsche 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 Porsche 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 Porsche 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 Porsche 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 Porsche 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 Porsche 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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