Mechanism of Surface Quality Improvement in Continuous Cast Slab with Rectangular Cold Crucible Mold.

DOI Web Site 被引用文献1件 参考文献9件
  • Cho Young-Whan
    Metals Processing Research Center, Korea Institute of Science and Technology
  • Oh Young-Joo
    Metals Processing Research Center, Korea Institute of Science and Technology
  • Chung Soon-Hyo
    Metals Processing Research Center, Korea Institute of Science and Technology
  • Shim Jae-Dong
    Metals Processing Research Center, Korea Institute of Science and Technology

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The control of the initial stage of solidification for continuous casting of steel is extremely important in producing high surface quality products. The surface quality is strongly influenced by the oscillation mark on the solidifying shell, which could be improved by applying alternating electromagnetic field in the mold. A 50×200 mm rectangular cold crucible mold has been designed by numerical simulation and used for measuring the meniscus contour and local heating of molten metals using tin and lead. It has also been used in continuous casting experiment with Sn and Sn–10%Pb alloy to study the effects of frequency, input power, melt level in the mold, casting speed, mold cooling water flow rate, and mold oscillation frequency on the oscillation mark. The maximum melt temperature was observed near the triple point where the mold wall, melt free surface and the atmosphere meet all together. It has also been found that the local Joule heating density has strong influence on the oscillation mark formation.

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