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The function, capacity and type of gas cabinet | Alloy Wiki
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The function, capacity and type of gas cabinet

Posted by: steel world 2023-11-01 Comments Off on The function, capacity and type of gas cabinet
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An experimental study carried out at Udholm Tools GmbH in Hagforsch, Sweden, has identified the influence of ladle-adherent deposits on the formation of non-metallic inclusions during ladle processing. Steel samples were taken from ladles at different stages of processing and ladles with different ladle ages. Inclusions were counted using an optical microscope. The study found that the total amount of inclusions before deoxidation and after ladle treatment increased with the ladle age. In ladles that have been used more than 18 times, the increase in inclusions is substantial. And most of the additions are extremely small inclusions. This finding was further confirmed by the difference in total oxygen content and dissolved oxygen content in the steel samples, which also showed an increase in inclusions with increasing package age. SEM-EDX analysis revealed two inclusion types before die casting, namely one inclusion consisting only of an oxide solution with a composition very close to 3CaO·Al2O3 and another inclusion consisting of the same oxide solution and MgO phase. composition. This finding is consistent with the report that 3CaO·Al2O3 and MgO coexist in the slag permeable layer of the ladle adhesion precipitation layer. It is concluded that the ladle-adherent precipitation layer is the main source of non-metallic inclusions in tool steel during ladle processing.

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