PURPOSE: To improve the workability through adjustment of the cast piece thickness at the outlet of the mold by controlling the water cooling of the solidified shell so that the thickness detected may satisfy the preset value.
CONSTITUTION: A molten metal 4 poured into an adiabatic mold 2 and a water- cooled copper mold 3 from a tundish 1 is withdrawn while a solidified shell is being generated from the inner surface of the water-cooled copper mold 3. The thickness of the cast piece in one direction is measured with a thickness detector 7 at the outlet of the mold. When the detected value fails to meet the preset value, a cooling water command device 8 is actuated to provide a command to a water quantity regulator 9 according to the difference from the preset value. With such an arrangement, the amount of the cooling water and the cooling range can be adjusted thereby ensuring even development of the solidified shell. Accordingly, the thickness of the cast piece at the outlet of the mold can be controlled freely in the horizontal direction and the withdrawing direction.
UCHIDA TOSHIO
NIIYAMA EISUKE
KODAMA HIDEYO
