Powder Coating
Our offline powdercoat/spray booths and separate box ovens can cater for larger and more complex items. The full range of RAL & BS colours are available in standard and non-standard finishes.
Maximum Furnace Dimensions:
Length - 8.000m
Height - 2.400m
Width - 3.000m
Max 6 Tonnes / item
Our online plant caters for high volume work such as fences and panels. The 150m track incorporates a 5 stage zirconium phosphate pre-treatment. The maximum dimensions per item are:
Maximum Material Dimensions (plant)
Length - 3.750m
Height - 2.700m
Width - 0.700m
What is powder coating?
Powder coating is a surface finishing technique first used in Australia about 1967.
In powder coating, the powdered paint is applied by electrostatically charging the powdered paint and spraying it onto the part. The part is then placed in an oven and the powder particles melt and coalesce to form a continuous film.
Stress relieving, normalising and annealing all prepare metals and alloys for further processing or for the intended service conditions. They control the ability of materials to, be machined with ease, perform without distortion in service, be formed without cracking or splitting, be subsequently hardened or carburised with minimal distortion, or to resist corrosive environments.
How is it done?
The powder is applied with an electrostatic spray gun to a part that is earthed potential. Before the powder is sent to the gun it is fluidised to separate the individual grains of powder and so improve the electrostatic charge that can be applied to the powder and so that the powder flows more easily to the gun.
Because the powder particles are electrostatically charged, the powder wraps around to the back of the part being sprayed. The powder will remain attached to the part as long as some of the electrostatic charge remains on the powder. To obtain the final solid, tough, abrasion resistant coating the powder coated items are placed in an oven and heated to temperatures that range from 160 to 210 degrees C (depending on the powder). The final coating is continuous and will vary from high gloss to flat matt depending on the design of the powder by the supplier.
Why powder coat?
Powder coating produces a high specification coating which is relatively hard, abrasion resistant (depending on the specification) and tough.
The choice of colours and finishes is almost limitless. Powder coatings can be applied over a wide range of thickness.
Maintenance of powder coated items
During installations, the powder coating should be protected from damage due to abrasion and materials of construction such as mortar and brick cleaning chemicals.
Once installed, maintaining the initial appearance of a powder coating is a simple matter. The soot and grime which builds up on surfaces from time to time contains moisture and salts which will adversely affect the powder coating and must be removed. Powder coatings should be washed down regularly (at least once each 6 months in less severe applications and more often in marine and industrial environments). The coating should be washed down with soapy water -- use a neutral detergent -- and rinsed off with clean water.
When powder coated items are installed without damage to the powder coating and they are maintained regularly, they should very long wearing. The coating, although not metallurgically bonded to the metal, if maintained correctly, will not crack, chip or peel as with conventional paint films.
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