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Heredity of Non-Metallic Inclusion of Non-Oriented Silicon Steel During Steel Making Process
Pages: 37-40
Year: Issue:  5
Journal: Electrical Engineering Materials

Keyword:  non-oriented silicon steelsteel making processnon-metallic inclusionhereditynon-aqueous solution extracting;
Abstract: As we all know, the non-metallic inclusion effects magnetic properties of silicon steel sheets obviously. The article aims to study the heredity of non-metallic inclusion in non-oriented silicon steels during the steel making process, and then provides a more effective controlling measure to remove the inclusions. Based on the typical non-oriented silicon steel charges, the non-aqueous solution extraction and SEM observation were adopted to analyze the non-metallic inclusions. Results show that, the total oxide reaches the maximum 0.23% at the beginning of RH refining, then decreases gradually, and reaches the minimum 0.02% during the RH refining process. The total oxide inclusion decreases continuously during the CC casting, but the average size of inclusion is nearly stable. In the present work, the total inclusion amount in tundish is about 1.59×104/mm3.
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