Hot tear segregations as quality decisive factor for advanced steel ...
Hot tear segregations as quality decisive factor for advanced steel ...
Hot tear segregations as quality decisive factor for advanced steel ...
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Quality pyramid: Incre<strong>as</strong>ing <strong>quality</strong> demands <strong>for</strong>state-of-the-art <strong>advanced</strong> <strong>steel</strong> gradesAdvanced <strong>steel</strong>s: low production, lower economic pressure <strong>for</strong> <strong>steel</strong> producerbut high ancd mostly complex <strong>quality</strong> demandsAPI, GO-Si-<strong>steel</strong>s, SEDDQ, Roller bearing <strong>steel</strong>s, SHSS, ...Multiph<strong>as</strong>e (DP, CP, TRIP), valve <strong>steel</strong>s , spring <strong>steel</strong>s ...Deep drawing <strong>steel</strong>s (DDQ), ....High-strength low-alloy (HSLA), Press hardening, (PH), ...Rein<strong>for</strong>cing <strong>steel</strong>s, structural <strong>steel</strong>s, ....Commodity <strong>steel</strong>: high production, high economic pressure <strong>for</strong> <strong>steel</strong>producer and low <strong>quality</strong> demandsPRICM8 Bernhard 3 Quality pyramid: Incre<strong>as</strong>ing <strong>quality</strong> demands <strong>for</strong>state-of-the-art <strong>advanced</strong> <strong>steel</strong> gradesAdvanced <strong>steel</strong>sAPI, GO-Si-<strong>steel</strong>s, SEDDQ, Roller bearing <strong>steel</strong>s, SHSS, ...Quality demands:- Strength within small tolerances- Highest <strong>steel</strong> cleanness on macro- but also microscopic level- Homogeneity and internal soundness- High surface <strong>quality</strong> (Decarburization, inclusions, …)- …Commodity <strong>steel</strong>Rein<strong>for</strong>cing <strong>steel</strong>s, structural <strong>steel</strong>s, ....Quality demand:- Minimum strengthPRICM8 Bernhard 4
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