CALL US: (09) 573 0146  |   7 Gabador Place, Mount Wellington, Auckland, NZ
Paint & Powdercoat Stripping


 > Aluminium

 > Steel

 > Other 

 

Aluminium

Aluminium (including alloys) includes painted and powder-coated aluminium extrusions, panels, wheels, furniture, gates, bicycles balustrades and so on.

To restore to the base metal surface, the paint stripper must break the coating’s molecular bond to let the paint residues drop harmlessly away and leave the alloy untouched. This is particularly important for light alloys such as magnesium, which is very sensitive to acid and alkaline solutions.

 

The typical stripping process for aluminium will involve immersion in a proprietary stripping solution (not available for separate sale) to first remove the paint/powder.

Stripping is always followed by hot water- blasting to remove all traces of the metal’s coating and of the stripping solution.

 

All alloys require pre-treatment to enable a coating system to adhere to the base metal. The pre-treatment may be chemical (e.g. chromate) or the application of an etch primer.

 

Our system effectively removes all pre-treatments back to mill finish with absolutely no profile damage.

 

Powdercoated aluminium posts received for stripping 


Aluminium posts after powder coating has been removed.


The finished product - recycled and as good as new!


Unloading aluminium on arrival in our factory


Steel

Steel (including cast iron and wrought iron) :

The typical stripping process we employ for steel involves the following three stages of treatment.

Firstly, paint will be stripped off the article utilising our proprietary stripping solution (not available for separate sale), which will reveal its condition and the extent of corrosion to be removed.

 

Corrosion or rust removal is then undertaken with acid treatment. The processing time is dependant on the extent of corrosion present.

 

We prefer a 100% inhibited phosphoric acid base to pickle away all corrosion but leave the clean steel untouched. This method is slower but has payback from a safety point of view, as all uncorroded metal remains unaffected by the pickling process.

Acid dipping treatment is followed by a hot water-blast to remove all traces of the acid.

 

The final step is to phosphate the material.

Our phosphate bath is heated to reduce the drying time of items when they are removed from the bath.

Phosphating is never a substitute for a proper protective coating system but is rather a chemically bonded surface to prevent flash rusting and to provide an appropriate pre-treatment for primer application, without any further preparation being necessary (such as sanding or blasting).

 

Components not made from steel are treated as per the section dealing with aluminium and alloys.

Fire-damaged cabinet and fittings received for refurbishment 


The cabinet following stripping and prior to acid treatment


The cabinet following acid treatment and zinc phosphating


The cabinet and fittings following processing, ready for collection


Other

Plastic

Many plastic items can be cleaned of paint or powder using our proprietary stripping process. Perhaps the most notable item in this category is plastic buckets, of varying sizes, which several of our customers use for mixing paint samples. After treatment in our baths, these are clean again and ready for re-use.

Plastic buckets received for cleaning 


Loaded into our jig for treatment in the caustic bath


Water-blasting to remove paint residue 


The finished product - with paint removed the buckets are ready for re-use by the customer


Fibreglass

Our stripping process can also remove paint from some fibreglass constructs. Please enquire.

 

Fibreglass midget car tail cone before paint stripping 


Fibreglass midget car tail cone after paint stripping


Removal of Galvanizing

We regularly encounter galvanized or bright zinc treated surfaces that customers want left intact. Our purpose-designed stripping solution will not harm good galvanizing and we can leave this intact for further service.

In some cases clients have left refurbishment work too long and previously damaged surfaces have been left to the point where self-sacrificing of the zinc is through to the underlying steel.

 

In these cases re-galvanizing is always an option but new galvanizing is only possible on clean steel and all traces of the previous zinc, together with any ferric corrosion present, must be removed.

As with rust removal, our system for removal of galvanizing is inhibited to allow for removal of the zinc without harm to the steel substrate, leaving the surface clean and ready for new galvanizing.

 

Removal of Lacquer 

Brass tray sent in for removal of lacquer 


Brass tray sent in for removal of lacquer 


De-Carbonising

We see many examples of carbon build-up on equipment such as BBQs, engine heads, baking trays, coffee urns etc. These items can be difficult to clean conventionally because of health and accessibility issues. 

 

Engine heads sometimes also have a varnish build-up, which is a by-product of the combustion process. We can successfully remove such carbon deposits, safely and effectively, to restore the original substrate.

 

 

With BBQ plates and food preparation equipment, such as bread racks or pie tins, our process is a requisite precursor to Teflon coating.

Other Metals

The stripping process we use is safe for most types of metal.

We have successfully dealt with brass, copper and bronze. Paintwork stripped from items made from these materials will generally leave the metal clean and ready for re-painting or further polishing to restore the metal for ornamental purposes. 

 

Examples where this process has been used includes old brass window catches or downpipes which have been painted being returned to the original brass finish.

Stripped brass and cast bathroom fittings 


Sculptured bronze casting with paint removed

 

 



Contact Us

For a no obligation discussion on how we can assist you, please call one of our team!

7 Gabador Place, Mount Wellington, Auckland
          New Zealand

Phone: (09) 573-0146

Contact