Ensuring the very best finish for your panels is our passion. The process of powder coating is precise, so our expert team prepare every panel with a pre-treatment that is chrome free, ensuring your panels are both environmentally friendly and outlast traditional methods.
Chrome free aluminium pre-treatment
For environmental and quality performance
We are proud to be leading the market, with pre-treatment for powder coating applications. Met-Fab Solutions continually invest in innovation of processes for premium panel production. By offering a completely chrome free metal surface treatment for aluminium panels, we are able to deliver an environmentally clean process, using a purified water solution.
The chrome free aluminium pre-treatment 5 step process
stage 1
Acid etch, clean, polish & degrease
stage 2
Water rinse
stage 3
Deionised water rinse
stage 4
Conversion coating – treament to make the powder
stick
stage 5
Tunnel oven cure drying with conveyor system for the aluminium extrusions & sheeting
The pre-treatment process
Pre-treatment is a crucial part of the fabrication process, as the performance of powder coating relies directly upon the integrity of the metal preparation. Our expertise in this process delivers reassurance to customers about quality. The process replaces traditional chromate-based pre-treatment methods, which use toxic and environmentally harmful chemicals, such as hexavalent chromium. Chrome free pre-treatment uses non-toxic, eco-friendly chemicals that provide equally high results and superior performance to that of traditional chromate-based methods.
Why choose Chrome free pre-treatment?
The process has become increasingly popular in industries such as aerospace, automotive and electronics, where strict environmental regulations and sustainability concerns have led to the phasing out of toxic chemicals. In addition to being more environmentally friendly, chrome free pre-treatment also offers other benefits, such as improved corrosion resistance, reduced process time and costs, as well as improved paint adhesion and appearance.
For environmental and quality performance
Common questions about aluminium pre-treatments
Why is pre-treatment needed?
Pre-treatment of aluminium prior to application of a powder coating is required to ensure satisfactory adhesion between the metal and the powder coating and that this adhesion is not impaired by subsequent corrosion of the aluminium surface.
Without proper pre-treatment, the powder coating may not adhere properly, leading to issues such as chipping, peeling, or flaking.
What are the advantages of chrome free pre-treatments?
Longer lifespan: Using chrome-free pre-treatment can increase the lifespan of the powder-coated product. The pre-treatment process creates a more durable surface that is resistant to corrosion, chemicals, and weathering.
Why is etch level important to monitor?
It is an important parameter to monitor in the pre-treatment process of powder coating because it determines the surface roughness and the ability of the substrate to adhere to the coating.
By monitoring and controlling the etch level, you can achieve optimal adhesion and performance of the powder coating, while minimizing issues such as peeling, chipping, or premature failure.
Chrome Free Aluminium Pre-treatment
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