| 摘要 |
PURPOSE:To prevent the cracking of a steel ingot by the constitution consisting in transmitting the overheating energy and solidification energy emitted from a casting by the spontaneous radiation of heat so that the casting shell in a secondary cooling region grows slowly. CONSTITUTION:The casting 1 is formed with the casting shell 1a by a cating mold 2 in a primary cooling region 2a and is guided by a supporting mechanism 3 consisting of supporting rollers 3a in a secondary cooling region 2b, by which the casting is fed to a rolling mechanism. The overheating energy and solidification energy emitted from the casting 1 are transmitted only by the radiation of the heat so that the casting shell 1a in the cooling region 2b grows slowly. The casting 1 solidifies thoroughly during this time and is maintained at the temp. corresponding to the heat capacity necessary for the rolling process at the terminal of a track 5. The cracking of the steel ingot is thus prevented.
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