Flawless, residue-free surfaces in many cases decide the quality of modern products. Contaminations on component surfaces – such as residues of drawing or release agents – can severely disrupt partial steps in the manufacturing process and render the product unusable. This is because modern, highly efficient joining methods, such as laser welding, laser soldering or gluing sometimes react very sensitive to contamination such as residues lubricants, corrosion protection or release agents. Likewise, incorrectly or incompletely applied functional coatings also impair further processing or the function of components.
With its F-Scanner family of devices, Fraunhofer IPM offers sensitive measuring systems that detect contamination or defects on surfaces directly in the production line. By using a combination of imaging fluorescence measurement and laser scanners, the F-Scanners detect organic contamination of just a few milligrams per square meter. The scanning systems enable 100-percent inspection while generating a high-resolution map that reflects the distribution of organic substances on the surface. Beyond the inspection of component cleanliness or coating this often also indicates issues in the production process.
Imaging fluorescence measurements based on the principle of the F-Scanner make use of a simple principle: Residues of oils, greases or wet chemical detergents, which are used for material processing or cleaning, exhibit fluorescence. Fluorescence measuring systems analyze the surfaces of components or production plants for residues of these substances without contact – whether it is a contamination or a functional coating. Thanks to imaging, the quantity and distribution of impurities can be easily located.
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