en.Wedoany.com Reported - The Fraunhofer Institute for Nondestructive Testing (Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren, IZFP) presented a method for detecting foreign objects in aluminum melt at the Sensor+Test trade fair in Nuremberg.

Researchers point out that aluminum, as a light metal, is about one-third lighter than steel and can be recycled with relatively low energy consumption, leading to continuously increasing demand in the trend toward lightweight construction. However, the safe use of aluminum depends on the purity of the melt, as non-metallic inclusions can degrade mechanical properties and become starting points for cracks in components, potentially causing serious consequences in the automotive and aerospace sectors. Existing detection methods are time-consuming, expensive, imprecise, non-reproducible, or can only be operated by experts.

To address this, IZFP has developed a measurement system called "AloX." Based on the principle of ultrasonic backscattering, the system couples ultrasonic waves into the aluminum melt and detects the reflected components, enabling qualitative analysis of the number, size, and distribution of inclusions. "AloX" can perform inspections during the melt production process, ensuring high metal quality before casting. The system is designed flexibly for use in both launder and crucible applications, even in hard-to-reach locations. Operation requires no specialized knowledge, allowing foundry staff to work independently. Currently, researchers in Saarbrücken are working to extend this method to other metals.

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