For aluminium wire inspection, CMS has developed an eddy current system, allowing detection of defects such as cracks and holes at a high speed (1500-2000 m/ min for example depending of the diameter range to inspect).
During the process, aluminium billets are transformed by lamination. Then, the wire is guided and passes through an eddy current system composed by a support coil mounted in a support table with guide rollers assuring a good entrance of the product. A special encircling coil, located in the support, allows the detection of cracks at the surface of the product.
Eddy current testing is performed by Zet@premium instrument dual channels. When a defect or an inclusion is detected, the system activates a line shutdown, marker, visual alarm, saw or some other outputs. An encoder installed on the line allows precise location of defects in a customized report.
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