Quality Improvement of Cast Strip by Temperature Treatment of Liquid Metal

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The temperature at which a liquid metal is heated may be a source of variation in the quality of as-cast strips. The present study focuses on stabilization of the casting process and improving the quality of as-cast strip by temperature treatment of liquid metal.<br>At the condition of constant cooling rate it was found that the degree of melt overheating changes the characteristics of solidification as well as the as-cast properties. The phenomenon is interpreted from point of view of different structure of liquid metal at different temperature. At low degrees of overheating, solidification depends on the inherited inter-atomic structure from the solid state. At high degrees of overheating this inherited structure is destroyed and the melt becomes more homogeneous. <br>Typical and modified melting cycles were compared, to determine the influence of overheating on the as-cast strip quality. The modified cycle resulted in a more stable process and produced higher quality cast strip with better surface finish, a lower degree of segregation and less internal stress.

収録刊行物

  • ISIJ international

    ISIJ international 44(9), 1541-1548, 2004-09-15

    一般社団法人 日本鉄鋼協会

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