Bright protection / passivation

Not every surface needs to shine, but every surface needs to be protected. Reliable bright-finish protection is crucial, especially for functional metal parts – for corrosion resistance, durability and process reliability. At Rieger, we offer a proven process for this: Passivation.

What is passivation?

Passivation is a chemical process in which a thin, protective passive layer is created on a metallic surface. This layer prevents oxygen or other corrosive media from reacting directly with the metal – without changing the actual surface.

Particularly important: the passivation is color-neutral and does not affect dimensions or subsequent machinability. It is therefore ideal for components that are further processed in downstream processes such as welding, bonding or painting.

When is bright protection used?

Bright protection by passivation is used wherever metallic components are used:

• are at risk of corrosion during storage or transportation

• remain unrefined over a longer period of time

• are to be temporarily protected (e.g. before subsequent finishing)

• are used in assemblies that require functional purity

Typical examples are connecting elements, milled or turned parts, blanks, contact surfaces or pre-assembly components.

Advantages of passivation at Rieger

• Reliable temporary corrosion protection

• Color-neutral and dimensionally stable

• Compatible with the following processes

• Environmentally friendly and chrome-free (optional)

• Fast, efficient processing, even for large quantities

• Reproducible quality through controlled process management

Depending on the material and requirements, we offer different passivations – tailored to stainless steel, aluminum or other non-ferrous metals. Combinations with degreasing or other pre-treatments are also possible.

Blank protection with a system – for more process reliability

Bare metal protection plays a particularly important role in automated or highly regulated sectors such as medical technology, automotive or the electrical industry. Corrosion in the bearing or unexpected reactions in the assembly process can lead to complaints and unnecessary costs.

This risk can be minimized with targeted passivation – as a reliable precaution for functional parts that need to be ready at the right moment.

Conclusion: Blank protection is more than an interim solution

At Rieger, we don’t see bright-finish protection as a minor matter, but as a strategic detail in the process chain. With the right process at the right time, we ensure the quality of your components – even if they are not intended to shine until later.

Do you have questions about passivation or do you need a short-term solution for parts that require bright protection?
Talk to us – we will be happy to advise you.