Why component preparation is crucial

When talking about the quality of surface coatings, the focus is often on the actual process: the electroplating, the electrolytes used or the coating systems. In practice, however, it becomes clear time and again that the decisive factors often lie before this.

After all, the quality of a coating is not only created in the bath – but also during the preparation of the component.

What happens before the process determines the result

Metal components are subject to various influences from previous production steps: Residues from machining, cooling lubricants, oxide layers or the finest particles. What appears inconspicuous at first glance can have a considerable impact on the coating process.

Typical consequences of inadequate preparation are

• Adhesion problems between base material and coating
• Irregular layer images or optical defects
• Trapped impurities
• Reduced corrosion resistance or functionality

Crucially, these errors can hardly or not at all be corrected afterwards. Once it is under the layer, it stays there.

Cleanliness as a process factor

Reliable pre-treatment ensures that the surface is metallically pure, active and uniform. Depending on requirements, this includes

• Degreasing and cleaning
• Staining or activating the surface
• Removal of oxides and residues
• Coordination with material and subsequent process

These steps are not just “preparation” – they are an integral part of the entire process chain.

Why this is so important in practice

In industrial series production, one thing counts above all: reproducibility. Consistent results can only be achieved if the initial conditions are stable.

Clearly defined and consistently implemented component preparation ensures this:

• that processes run stably
• that waste is reduced
• that coatings fulfill their function permanently
• that quality is not left to chance

This step is essential, especially for demanding applications – such as in the automotive industry or for technical functional components.

Not visible – but crucial

Component preparation takes place in the background. It is rarely visible and often underestimated. And yet it plays a key role in determining whether a surface is ultimately convincing – both visually and functionally.

At Rieger, we therefore do not regard this step as a minor matter, but as an integral part of our quality philosophy. Because for us, a good coating starts long before the actual process.