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Surface treatments

The quality of our work as far as part treatment is concerned is essential for a perfect finish to later join the rubber to the metal. At Cortugroup, we place our experience, professional team and infrastructure at your service. Guaranteed vulcanization requires prior quality work with surface treatments. At Cortugroup, we off you this, adapting to your needs.


Degreasing

The cleaning process for parts to be painted is basic with any project we work on. Having an entirely clean surface for good adhesion later. At Cortugroup, we conduct two kinds of degreasing for automobiles: alkaline, and solvent-based. This provides for suitable surface tension. We conduct alkaline degreasing on the parts both through immersion and through spraying in wash tunnels.

Shot blasting

Shot blasting is one of the adhesion possibilities we work with on parts. Shot blasting automobile parts provides for perfect surface preparation, ensuring adherence of the adhesive we later apply. Total or partial shot blasting parts provides roughness to the smooth surface, and thereby greater adherence.

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Phosphate coating

Phosphate coating is another adhesion possibility we work with at our facilities. The phosphate coating process for automobile parts consists of creating an interface on the metal surface, at a microscopic level.

Thus, chemically, and through immersion, we create a film of micro phosphate crystals on the part, increasing adherence capacity to the metal.

Zinc plating

The third option we work with is zinc plate. Just like with phosphate coating, we create an interface on the part's surface with an anti-corrosive agent. In this case, we electroplate with a zinc-nickel alloy.

We recommend zinc plating as the perfect anti-rust treatment for automobile parts that will be exposed to the elements.

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We conduct pre-treatments such as degreasing, shot blasting, phosphate coating, polishing and zinc plating, preparing the part's surface for perfect adherence when the coating is applied. At Cortugroup, we are specialists in coating automobile parts, and adhesive coating anti-vibration elements, in addition to other treatments.

Adhesive coating

Once the parts are pre-treated to have good adhesion on their surface, we begin work on the adhesive coating. As far as systems are concerned, we paint parts both in mono-layer and in bi-layer.

We are specialists in mono-layer treatments for automobile parts. Our team of professionals gets very good results in demanding treatments, with water-based adhesives and thickeners no greater than 5 microns.

Thanks to our commitment to innovating with our own machinery, our projects use our control machines. Detectors that validate application of the first bi-layer coat of paint to ensure top-quality results, always with maximum productivity.

What is more, at Cortugroup we have vast experience working with this kind of adhesive treatment for natural rubber, nitrile, polyurethane, and more.

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Cortogroup is specialised in degreasing, shot blasting, phosphate coating and adhesive coating operations for metal automobile parts.