Chromefree pretreatment of aluminium
Superb adhesion, corrosion protection and cost effective processing
Qualicoat approval, Tested by IFO for 3000 hours AASS
Gives yellow color to the substrate for easy visual quality check
AD Chemicals PreCoat Color is a completely chromium free conversion coating that is used in the pretreatment of aluminium alloys prior to the coating process. PreCoat Color makes it easy to swith to a chromefree process!
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+31 (0) 167 526 900
Use of PreCoat Color
PreCoat Color is used to obtain a coloured conversion coating on aluminium extrusions and panels. After immersion (or spraying) in PreCoat Color, the wet film is dried on the aluminium surface without additional rinsing (so called no rinse system), prior to the powder coating.
- PreCoat Color is suitable in spraying and immersion processes
- PreCoat provides good protection to under creep corrosion
- PreCoat provides excellent adhesion with organic coatings (e.g. powder paint systems)
- Qualicoat approval
Unique Yellow color for quality control
PreCoat color gives a yellow color on the aluminium substrate which enables easy visual quality control.
More than 15 years of experience
AD Chemicals is already more than 15 years a leader in the field of chromefree pretreatments for aluminium substrates. With PreCoat Color you can trust on a robust system with a similar performance as chromium.
Independently tested by IFO Germany
“Is the requirement of 1000 hours corrosion resistance which Qualicoat prescribes enough?”
AD Chemicals doubts this statement of Qualicoat. When you only focus on the 1000 hours corrosion resistance, that has been described in the past, Qualicoat is right. However, the corrosion resistance of chromium (VI) based pretreatments fulfills the 2500 hours. This was a fair value for Chromium (VI) based pretreatments on Aluminium. AD Chemicals has investigated their chromium-free systems on the corrosion resistance of 3000 hours and compared it with the traditional chromium(VI) systems.
Internal research shows that the chrome free pretreatment of AD Chemicals PreCoat Color achieved a corrosion resistance of 2500-3000 hours.
Results AASS 3000 hours
Results after 3000 hours AASS according DIN EN ISO 9227 performed by IFO (Germany).
AD Chemicals is specialized in chromium(VI)-free conversion coatings and passivations. These products are marketed under the brandname PreCoat.
Pre-treatment chemicals prior to coating
AD Chemicals develops, produces and supplies a wide range of products to pretreat aluminium surfaces prior to a coating process. This can be both a powder-coating and liquid paint process. AD products significantly enhance adhesion, corrosion protection and general surface quality of the finished product. All products are certified by or tested against international quality standards such as Qualicoat and GSB. The products can be applied in dip, spray and cascade processes.
The product portfolio for aluminium pre-treatment
- AD is specialized in developing chrome(VI)-free conversion coatings (brandname PreCoat), completely free of chromium (chromefree) or on chromium trivalent basis.
- Degreasers, Etch, Etch additives, desmut/neutralisation, chromate based products and chrome free products
- Paint strippers for aluminium
AD, the chromefree specialist
Also companies that are seeking improvement in an already chromefree process can count on AD. AD has an extensive track record in optimizing the performance and efficiency of chemical pretreatment lines.
Durability and extended end-use life are demands that consumers take for granted and of which they expect continuous improvement year on year. Paint adhesion and corrosion resistance are critical factors in keeping end-use applications in a condition that is expected to remain in place for their usable life time.
Bare corrosion protection (passivation)
Passivation treatments, that are applied in-line, form a barrier to corrosion and form a suitable layer for post painting operations. Passivation products are both economic and effective in use.
AD Chemicalso has expert knowledge and offers a wide variety of chemicals and additives for the anodizing process.