INFLUENCE OF SLENDERNESS RATIOS OF A MULTI-HOLE CERAMIC FILTERS AT THE EFFECTIVENESS OF PROCESS OF FILTRATION OF NON-METALLIC INCLUSIONS FROM LIQUID STEEL

摘要

The paper presents the results of investigations of the process of filtration of solid non-metallic inclusions from liquid steel with use of multi-hole ceramic filters (filtrating surfaces) characterised by a varying slenderness ratios. In order to eliminate the negative influence of the ambient air atmosphere the investigations have been carried out under a protective argon atmosphere. The experimental results obtained have proved earlier suggestions of papers [9-12] about the negative influence of ambient air atmosphere, as well as the essential influence of slenderness ratio of the used multi-hole ceramic filter at the increase of effectiveness of the liquid steel refining processes carried out through steel filtration.