Login

Forgot your password?

Technical contribution

Markets Our Approach Coating solutions Coaters The Corrosion College Glossary Company
English

The Corrosion College

Layer by layer protected

A new two-layer passivation process shows significantly improved corrosion resistance. The special feature of the process is the synergetic effect of the two layers, which results in increased corrosion protection.

Read more about the topic in this article (published in the JOT Special Galvanotechnik 2018, only available in german).


 

The Corrosion College

Steel annealing almost without scale

During annealing processes before and during the hot forming of steel, scale can be formed. Industrial companies cause the oxidation product high costs, because they have to rework the steel. But there is an environmentally friendly solution, a heat-resistant, ecologically harmless protective coating that reduces scale formation before forming and thus reduces CO2 emissions. His name: DELTA-HEAT®. A development that not only makes the production process more effective, but also makes an important contribution to climate protection. For this purpose, the project was included in the nationwide exhibition for climate protection, Klima.Expo.NRW.

Read more about DELTA-HEAT® and its applications in the new edition of the steel market (written by Dr. Heinrich Dornbusch, only available in german).


The Corrosion College

Coating decreases material losses caused by scale formation during reheating

A coating layer serving as oxygen barrier to reduce scale formation during re-heating of steel was developed. By a chemical bottom-up synthesis defined properties of the coating layer like e. g. thin layers and appropriate adhesion and application properties were adjusted in a very exact way. The scale formation could be reduced by up to 80 % leading to a significantly higher material efficiency. The formed scale is very uniform and easy to remove leading to less surfacedefects caused by scale residues and less wear at the tools.

For further information please click here the PDF.


The Corrosion College

The screw through the ages

Screws have been known since the 3rd century BC. One of the most popular applications is the Archimedean screw for pumping water. The use as a fastening screw came on only in the 15th century. Meanwhile, the screw from everyday life is indispensable. Here, the corrosion protection of mostly made of steel and then galvanized screws plays an important role. As part of the increasingly critical legislation and the desire for more environmentally friendly systems, more work is being done on Cr(VI)- and co-free passivation technologies for galvanized screws. Here, two-layer passivation shows excellent corrosion protection results, even in the mechanically heavily loaded bulk material production.

For further information please click here the PDF (only available in german).


(Source: Wikipedia - Archimedean screwm)


The Corrosion College

Rust-free driving: test procedures for corrosion protection in cars

From bolts to chassis components and on to engine mounts: cars incorporate parts made from a range of different materials which, depending on use, need to satisfy numerous requirements with regard to corrosion protection. Each individual component requires a special coating precisely tailored to specifications, in order to guarantee long-lasting function and satisfy the strict automobile specifications of the national and international OEMs. Different test procedures are applied to test or examine the surface coatings of components used in cars.

For further information please click here the PDF.

(Prüfkammer für den Salzsprühtest ISO 9227 NSS)
(Test chamber for the salt spray test ISO9227 NSS)


 

The Corrosion College

Long-Term Protection for Chassis Components

Long-Term Protection for Chassis Components Car chassis components, such as rear subframes, track rod ends and anti-roll bars, are exposed to extreme stresses. Zinc flake coatings can provide long-term corrosion protection for these parts and also meet the stringent standards set by global carmakers. Zinc flake systems have been used successfully in the automotive industry to protect vehicle surfaces for many years.

For further information regarding this topic please click here the PDF (published in the magazine JOT, Issue 3-2018; until now only available in german).


The Corrosion College

The challenge of hydrogen embrittlement

Hydrogen-induced stress corrosion is a frequent cause of sudden failure of machine and agricultural equipment systems. Especially on components subjected to high levels of stress, it leads to sudden failure. Construction parts, including high-strength fasteners, break without a moment‘s notice. For machines that need to be reliably in non-stop use during periods of soil cultivation, manure spreading or harvesting this is an absolute disaster.

How hydrogen embrittlement develops and how agricultural equipment systems can be protected, you can read in this PDF.


The Corrosion College

High-performance protection for chassis and major components with difficult geometry

Chassis components are exposed to extreme static and dynamic stress, as well as constant mechanical onslaught in the form of stone impacts. To ensure the required, very high level of rust protection and long lifetime of the vehicle, especially resistant coating systems are called for. Special requirements such as the secure coating of the interior of pipe constructions can also only be satisfied via individual corrosion protection solutions.

Which possible coating systems can be applied, can be found here.

​​​​​​​


The Corrosion College

Stainless steel in construction - is there no alternative?

Stainless steel is a favoured material in the construction sector. However, for those looking for assured corrosion protection and high functionality in the construction process whilst at the same time bearing in mind costs, alternatives are available.

You can find out which ones here.
 


The Corrosion College

High-performance protection for safety components and the environment

The joining of the national high-speed rail networks to form an integral European network is one of the key issues of common European transport policy and requires the consistent reworking of EU infrastructure policy. In relation to this, the EU aims to significantly increase its financial investment in trans-European rail connections. The European Commission intends to promote a total of nine main transport corridors, making some 26 billion euros available in the 2014 - 2020 planning period. The aid encompasses transport infrastructure projects on rail, road and on the water. Amongst other items, 15,000 kilometres of high-speed rail routes are to be linked up, with the goal the completion of a European main network by 2030.

Information about the resulting consequences for the environment and safety components can be found in this PDF.


The Corrosion College

Galvanising 2.0

Equipment, machinery and buildings used in the agricultural sector are subjected to a wide range of stresses - and this also applies for the parts and components they contain. As a result, in addition to the function of corrosion protection, surface protection for these components needs to satisfy a large number of different requirements. For example, coatings used here typically need to withstand high levels of chemical stress, such as from fertilisers or silage.

For further information please click here the PDF.


 

 

The Corrosion College

Corrosion protection for trucks and trailers

Functional components on trucks and trailers are subjected to high stress and therefore need to be offered enduring protection against environmental influences and corrosion. Depending on the prevailing framework conditions and other requirements to be fulfilled, various coatings can be used in this.

This PDF offers you the different possibilities.


The Corrosion College

Offshore corrosion protection: longevity is a must

Some of the fasteners built into a wind turbine are exposed to extreme climatic and corrosive conditions. They therefore need a highly effective and long-lasting form of corrosion protection in order to ensure that the turbine operates reliably and cost-efficiently throughout its prescribed period of use. This applies in particular to offshore locations. Here the standard requirement placed on the coatings used is corrosion resistance of up to 1,440 hours in salt spray testing as per DIN EN ISO 9227.

For further information please click here the PDF.