Cleanliness inspection

Immaculate clean, residue-free surfaces are crucial for the quality of modern products.

Component surfaces play an important role in the quality and functionality of industrially produced products. In many industries, such as as automotive or electronics industry, filmic – especially organic – impurities are undesirable. This is because many welding, bonding and sealing methods sometimes react very sensitive to contamination such as residues of drawing or release agents, cooling lubricants or corrosion protection. They can severely disrupt these important steps in the manufacturing process and, in the worst case, render the product unusable or lead to a safety risk.

Another critical factor is particle contamination. One single particle can lead to the failure of an entire component assembly. And for the service life of highly stressed components, technical cleanliness is a decisive criterion.

Immaculate clean, residue-free surfaces are therefore crucial for the quality of modern products in many cases.

100-percent purity control: Fluorescence measuring systems seamlessly inspect the cleanliness of surfaces.

Fluorescence measuring systems by Fraunhofer IPM monitor and document surface cleanliness of components during production – entirely and for every single component. Violet or ultraviolet laser radiation excites the fluorescence of organic residues such as lubricants, anti-corrosion oils, release agents, fluxes and fingerprints. The detection limit for most organic species is in the range of 1 to 10 milligrams per square meter, which corresponds to a layer thickness of only a few nanometers.

Fluorescence measuring systems for cleanliness control by Fraunhofer IPM minimize resources and production waste, reduce system downtimes and maximize the quality and service life of components and systems. They thus pave the way for sustainable, data-based cleaning and coating processes.