| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a continuous casting method of copper, which suppresses a temperature difference of a cast piece in the width direction and the overcooling of a surface, makes compatible the internal crack prevention and surface crack prevention of the cast piece, and can manufacture the high-quality cast piece. <P>SOLUTION: In the continuous casting method of the copper, there are used a mold 10 and a continuous casting machine 12 having a secondary cooling band 11 arranged downstream of the mold, the cast piece 13 containing 1.0 mass% or higher of Si, or 10 mass% or higher of Cr, or 0.5 mass% or higher of C is drawn out of the mold 10, and the cast piece 13 is cooled by a large number of cooling nozzles arranged at the secondary cooling band 11. A consumption amount Pw of powder supplied into the mold 10 is set as 0.2 to 0.6 kg/m<SP POS="POST">2</SP>, a mass% ratio CaO/SiO<SB POS="POST">2</SB>of CaO in the powder with respect to SiO<SB POS="POST">2</SB>is set as 0.90 to 1.45, and the water quantity density W of cooling water blown to the cast piece 13 from the cooling nozzles is set as 300 to 700 liter/m<SP POS="POST">2</SP>/min in a cooling range from immediately before the mold 10 up to 1.2m in the casting direction within the secondary cooling band 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
