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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 708 pages |
| ISBN: | 978-0-9879917-1-3 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
Effect Of Deoxidizer On Inclusion Distributions Of Continuously Cast Slabs Of 304 Stainless Steels Analyzed By Statistics Of Extreme Values
Yuichi Kanbe1; Andrey Karasev1; Hidekazu Todoroki2; Pär Jönsson1;1KTH, MSE, Stockholm, Sweden; 2NIPPON YAKIN KOGYO CO., LTD., Kawasakishi, Japan;
Type of Paper: Regular
Id Paper: 154
Topic: 5
Abstract:
Inclusions in specimens taken from continuously cast slabs of 304 stainless steels were observed to evaluate their maximum size in a unit area. Two different types of slab specimens were sampled to understand the effect of deoxidizer; one was Si/Mn killed and another was Al killed. Statistics of extreme values in a square root of area were applied to comprehensively express the distribution of inclusions. As a result, the distribution of the extreme value of the Si/Mn killed has been found to be larger. The largest size of inclusion detected in 1 mm2 as a unit area ranged between 3 and 17 µm for the Si/Mn killed steel while it ranged between 2 and 5 µm for the Al killed. Thereby, inclusion with maximum size existing in arbitrary area is able to be predicted. Regarding the compositions, inclusions were identified as silicate type for the Si/Mn killed, while those composed of CaO, MgO and Al2O3 were identified for the Al killed. The difference in inclusion compositions is therefore considered to bring the difference in size distributions.