Innovative, cutting edge and designed to last.
Our premises are fully equipped to perform the entire powder coating procedure from prep through to curing.
Chromate Conversion pre-treatment
Preparation is a vital ingredient in producing professional, lasting results in powder coating. We use a Chromate Conversion pre-treatment system as we find it to be the most effective preparation treatment process available. When chromate conversion coating is applied, its purpose is to passivate metal substrate, preventing oxygen in air to corrode the metal surface.
Our pre treatment process is based on the following steps:
- Acid bath to clean the product and provide an etch for Chromate.
- Clean water rinse.
- Chromate conversion to passivate the metal
(the process of making the material passive in relation to powder before combining both materials together).
The chromate protects the surface from corrosion and is done prior to powder coating.
- Final clean water rinse. The product is then dried ready for powder coating.
The powder coating is applied to objects by spraying the powder using an electrostatic gun. The gun imparts a positive electric charge to the powder, which is then sprayed on the item compressed air spraying and then accelerated toward the workpiece by the powerful electrostatic charge.
Our application process is as follows:
- Powder coating is applied using specialised Electrostatic Equipment.
- Powder coating is used to provide a durable and hard finish that is tougher than wet paint.
- It is applied as a free flowing and dry powder and is then ready for curing in our oven.
- Powder coating comes in a large range of colours and is used for a diverse range of products including pool fencing, balustrade furniture, pergolas, windows, doors and extrusions.
THE CURING PROCESS
The curing process is essential in setting the powder coat. It requires a high temperature for a certain length of time, depending on the material’s characteristics in order to fully cure.
Our oven curing process is as follows:
- After powder is applied the product is ready to be oven cured.
- Our gas oven is fired up to the required temperature (heat varies on different powders).
- When a thermoset powder is exposed to elevated temperature, it begins to melt, flows out, and then chemically reacts to form a higher molecular weight polymer in a network-like structure. This cure process, called cross linking, requires a certain degree of temperature for a certain length of time in order to reach full cure and establish the full film properties for which the material was designed. Depending on the product coated, the powders cure between 160-210°C for 4-10 minutes.