These observations and modelling results, together with the analysis, interpretation and advice of our experienced researchers, give our industrial customers more insight in the quality drivers in their process, and allow them to make targeted modifications. For instance, the influence of ladle slag composition on steel reoxidation can be shown. For daily quality assessment DIN50602 and ASTM E45 standards are used.įurther, thermodynamic modelling is used to study interactions with other phases. To assess the time-dependent inclusion population during processing, samples were analyzed using SEM with automated inclusion detection and analysis. On the characterization side, we used several techniques to understand the formation and removal of non-metallic inclusions in steel during liquid processing and casting. InsPyro cooperates with Nedstaal in focused projects to improve the liquid processing for higher steel cleanliness, taking into account all main issues such as addition optimization, reoxidation prevention, ladle slag composition etc. Therefore, a tight control of the inclusion formation is necessary. In industry standards, especially oxide inclusions are penalized. DIN 50 602 2 Concepts 2.1 Non-metallic inclusions Non-metallic inclusions to be assessed on the basis of this standard are constituents, typically found in steel, of sulfidic or oxidic nature originating from contact of ‘the melt with the non-metallic lining of. In specialty steelmaking, high requirements are imposed on steel cleanliness. Continued on pages 2 to 13, DIN 50602 Engl.
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