Source of Inclusion in IF Steel End Slabs

Abstract:

The source of inclusion in IF steel end slabs after reducing the casting remnant were studied by means of total oxygen and nitrogen content analysis, original position analyzer for metal (OPA), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Slims. The results show that: reducing the casting remnant have little influence on reoxidation in continuous casting process, the size of micro-inclusions are mostly smaller than 5 μm. The size of large-sized inclusions in end slab are mainly trapped in mold, they are mostly from 140 μm to 300 μm and over 300 μm, which accounted individually for 19.94% and 73.21% of total large-sized inclusions. In the end of a cast, decreasing the casting speed with slower speed changing rate can decrease the slag entrainment index of hot rolled coils from end slabs.

• Periodical: Advanced Materials Research (Volumes 887-888)
• Pages: 266-269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.887-888.266
• Online since: February 2014
• Authors: En Hua Tian, Heng Cui*, Dong Xia Li, Yong Qi Yan
• Keywords: Cleanliness, End Slab, IF Steel, Inclusion

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