As defined in DIN 50 900 corrosion is the reaction of a metal material with its environment which results in a measurable change in the material and can lead to an impairment of the functionality of a component or of an entire system. Corrosion arises mainly through chemical influence or electro-chemical reaction. In order to achieve temporary corrosion protection of up to two years (usually for storage and transportation) oils or waxes that are simple to apply and to remove again are mainly used. In order to achieve permanent corrosion protection for a period of up to 10 years (and more) various measures are taken such as the selection of corrosion-resistant materials, metal coatings (electroplating, metal spraying, hot dip galvanizing), mineral coatings (enamelling, cementing), organic coatings (coating or cladding with plastic) or electro-chemical protective mechanism. However, all these measures must already be taken into consideration during the design and manufacturing stages. In order to touch up interruptions or damage to galvanised surfaces caused by welding, drilling or cutting zinc spray is often used in the maintenance and workshop fields, such as in steel building construction and civil engineering, heating and piping systems and when repairing exhaust systems and car body damage. Zinc spray is suitable in particular for spot welding. It adheres firmly to ferrous metals and forms an excellent priming for the subsequent coatings.
The requirements placed on the touching up of hot-galvanised surfaces are described in DIN EN ISO 1461 of 1999, which has replaced DIN 50 976 of 1989. These are to be observed in the context of the concrete application.
Example of use:
In workshops slideways and piston rods are stockpiled as piece goods. When chromium-plated slideways and piston rods are tailored, the end pieces have to be protected permanently against corrosion afterwards. Since these pieces are manufactured order-specifically in small numbers, subsequent electroplating is often not possible and can also not be carried out in the time available. With OKS 2511 it is possible to carry out permanent corrosion protection of the cut surfaces rapidly and inexpensively in your own workshop.
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Further OKS corrosion protection products
- OKS 2101 Temporary wax-based corrosion protection film
- OKS 2301 For protecting the injection moulding die against corrosion
- OKS 2521 Decorative corrosion protection based on zinc and aluminium powder
- OKS 2531 Decorative corrosion protection based on aluminium powder
- OKS 2541 Protective and decorative coating with stainless-steel pigments for all materials
- OKS 361 High-performance corrosion protection oil for storing and lubricating machine elements
- OKS 601 Multiple-oil for cleaning and care of metal surfaces