Temporary Corrosion Protection

Corrosion on your newly manufactured products or even during production can have a serious impact on the efficiency of your business.

To prevent this it is necessary to use corrosion protection that forms a barrier between the metal substrate and the corrosive elements in the environment (e.g. oxygen, humidity, salts and temperature). Temporary corrosion protection may also perform other functions, such as lubrication or cleaning.

Temporary Corrosion Protection Explained

Corrosion is the gradual destruction of materials (mostly metals) as they are converted, through chemical or electrochemical reaction with their environment, into a more chemically stable form.

Corrosion can occur in many forms: Brown rust on steel is the most well-known one. This process is heavily influenced by environmental circumstances such as oxygen, humidity and temperature. As corrosion is a gradual process, it occurs in different phases.

When the 'right' circumstances for corrosion are present, an unprotected steel surface will start to show flash rust within seconds. This can happen in a pretreatment line between the subsequent cleaning and surface treatment steps. If the circumstances do not change, corrosion will continue until the object is fully deteriorated. To prevent corrosion it is necessary to apply corrosion protection; this prevents the chemical and electrochemical processes from taking place by forming a barrier between the metal substrate and the environmental elements that are causing the corrosion.

There are two main categories of corrosion protection: permanent corrosion protection and temporary corrosion protection. The first group consists of all methods for protecting the substrate for at least its intended service life. This can include paint, powder coating, anodising (in the case of aluminium) and galvanising. The second group includes all technologies that provide a temporary protective layer during the production process or transport and warehousing.

Application Fields of Temporary Corrosion Protection

Interoperational Corrosion Protection (In-process Protection)
Flash rust must be avoided after cleaning metal parts in a production process. To achieve this it is necessary to consider a range of variables such as the time between the different stages, the pH of the previous stage, application methods (immersion, spray, manual), removability of the protector in the next stage, water quality and so on. The Henkel technical service team can work with customers to help find the right solution that fits perfectly with the application.

Storage / warehousing           
Here the required protection time and the environmental conditions (often temperature and humidity) are the main concerns. There are several corrosion protectors in the BONDERITE portfolio with protection times that vary from a few hours up to six months.

Here too the environmental circumstances in which the products are being kept are crucial for temporary corrosion protection. The challenge, however, is that these conditions change frequently while goods are being transported. Humidity, the amount of salt (especialy for goods transported by sea), temperature and so on can vary widely over a single journey.

BONDERITE offers a complete portfolio of temporary corrosion protectors that can provide reliable protection under these changing conditions and compatibility with corrosion protection products, such as VCI technologies (volatile corrosion inhibitor).

BONDERITE - Temporary Corrosion Protection Technologies

Henkel supplies a wide range of BONDERITE temporary corrosion protection products. Each is designed for a specific function; together they offer customers the corrosion protection they need throughout their processing and continuing through transport and storage to ensure that products can be delivered to end users in perfect condition.

Product types include:

  • Water-based – either water-based or as an oil/water emulsion
  • Oil-based supplied as:
  •     -  Protection oil
  •     -  Protection oil with dewatering agent
  •     -  Dewatering agent with protection oil
  •     -  Dewatering agent - solvent cleaner

The Benefits of BONDERITE Temporary Corrosion Protection

BONDERITE coating processes provide outstanding performance because they are innovative, reliable and sustainable. They provide manufacturing benefits to customers through simplified coating processes and improved corrosion resistance. This provides customers with higher value products while meeting the stringent environmental requirements of today and tomorrow.

The benefits of BONDERITE temporary corrosion protection:

  • Effective protection against corrosion
  • Low or no VOC products (volatile organic compounds)
  • Non-flammable products or a high flashpoint
  • A range of water-based protectors
  • Expertise in corrosion protection and subsequent processes such as bonding, sealing and painting, all from a single source
  • Henkel's global presence
  • Highest quality and outstanding service
  • Field technical service available around the globe

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Sustainable Temporary Corrosion Protection

BONDERITE temporary corrosion protectors not only deliver outstanding performance and ease of use, but also offer exceptional sustainability, e.g. based on their composition or the reduced cleaning required when the protector is removed. At Henkel, the global market leader in adhesives, sealants and functional coatings, protecting the environment and human health is an integral component in the development of every new product.