EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

For flat steel production, the surface quality and the knowledge of surface defects is crucial to deliver a high quality product to the customer. Therefore, since end of 1990th as the first commercial systems came up, automatic surface inspection systems (ASIS) have been established as tightly integrated tool for surface quality supervision and the data provided by the systems are now more...

In the past decades, all possible strengthening mechanisms have been fully exploited to tailor the mechanical properties of steels. Nowadays, it is becoming difficult to move further and meet the continuously increasing properties requirements, as the physical limits have been almost reached in bulk metals. Multilayer metallic materials produced by roll-bonding can be a viable solution to...

Surface quality monitoring is primarily implemented in the last steps of steel manufacturing before shipment to the end user. However, an increasing trend for also addressing this topic in the upstream stages, such as hot rolling plant, is tackled by Primetals Technologies to give steel producers the key to a global optimized yield management, and efficient “lessons learned” processes. ...

Here we present the HiNSPECT, a brand new machine based on shape-from-shadow technique, which aims at marking defective areas product surfaces with high accuracy within the zero-defects tolerance policy. Special lightning and innovative algorithms concur to highlight the defects with their pseudo-3D depth. Irregularities, such as scratch marks or inclusions, can be neatly seen in real-time...