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METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 18b
SUMMARY:HD scan: Detect and grade also the so far hidden cast defects
DESCRIPTION:Complaints from end-customers cost more than recycling of defect material produced. Therefore it is important to be sure about the quality of the cast steel material prior selling. Internal quality of cast material can be proved via etching / sulfur print or with the new ultrasound technique developed by SMS group GmbH under the name HD scan.
The first industrial HD scan system was installed by Tata Steel IJmuiden in December 2018. Since then Tata Steel and SMS work in close cooperation for further optimization of quality evaluation. Several hundreds of samples were measured in production process, more than a hundred were additionally etched and results compared. 
In consequence, similarities and differences between etching and ultrasound methods were discussed. Most of the results match, however for some samples (normally steel grade specific) discrepancies were observed. Whereas by etching only one surface layer is analyzed, HD scan provides higher reliability of defect distribution due to volume information. Moreover, sometimes defects like cracks are smashed and hidden by sample preparation prior etching. For some other samples differences in results is a case for further studies. The key question to be considered is – what is the best technique for cast steel quality evaluation in modern digital world?
Various measurement results from Tata Steel IJmuiden sample will be presented and discussed, as well as some information from other HD scan customers will be given.

CLASS:PUBLIC
DTSTART:20230615T102000
DTEND:20230615T104000
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