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Frumecar sets up a new coatings analysis laboratory to optimise the qualities of paints and other coatings for its equipment.

by | May 17, 2021 | Concrete Plants, Innovation, News | 0 comments

Corrosion generates enormous losses. Some estimates put such losses at almost 5 percent of world GDP. In fact, around a third of the world’s steel production, if not more, is aimed at replacing parts damaged by corrosion. This problem is accentuated in installations and equipment for the production and distribution of concrete.

A lot of money is at stake and whoever takes this challenge seriously can gain a significant competitive advantage. Prevention is the most economical way to deal with corrosion. Therefore, it is necessary to implement methods that are able to analyse it in a short space of time.

At Frumecar, we are aware of the magnitude of the problem and for this reason we have set up a coatings analysis laboratory to analyse the anti-corrosion properties of coatings and paints on metal parts and structures of all the components of our equipment. The aim is to carry out accelerated corrosion tests and thus determine in hours (days and sometimes months) phenomena that in reality take years. With this laboratory we can guarantee our customers the highest market standards in anti-corrosion quality of our coatings.

Generally speaking, an anti-corrosion coating should be as inert as possible to the surrounding environmental conditions and should have properties that optimise its purpose, such as adhesion to the substrate. Methods such as salt spray chambers are used to calibrate such features. In these chambers metal parts are introduced, painted and/or coated with an anti-rust emulsion. Under standardised conditions (UNE-EN ISO 9227), the parts under test are subjected to a sustained vaporisation of saline water to create a constantly humid environment.

These tests can be used to determine whether anti-corrosion paints have the following effects:

  • Barrier effect: The coating should be as waterproof as possible.
  • Ionic resistance: To prevent the movement of the electrolyte ions that cause the absorption of oxygen by the metal structure.
  • Inhibitory effect. Directly or indirectly,there are elements that inhibit and delay oxidation once it has begun. Some pigments in paints have this property.
  • Cathodic protection effect. Some paints have metallic components, usually zinc, that act as an anode which makes the metal underneath act like a cathode thus protecting itself from oxidation.

The protection of the UNE-EN ISO 9227 standard covers three types of salt spray tests: NSS, or neutral salt spray is exerted on metals and various types of alloys. The salt spray pH should be within the range of 6.5 and 7.2 (at 25º). Acetic acid salt spray (AASS) and copper acetic salt spray (CASS) are used for nickel and chrome or copper coatings. Also for anodic and organic type coatings on aluminium. The pH will be between 3.0 and 3.1 (23 to 27 degrees).

Innovation is one of our guiding principles, it is in our DNA. At Frumecar we look for effective and efficient solutions, researching the best products and services and the best methods to implement them. It is our commitment to manufacturing quality for each and every component of our equipment. If you would like to know more details about our coating analysis laboratory, please contact us. Phone number: +34 968 890 000 – Email: frumecar@frumecar.com

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