PURPOSE: To smoothly pour molten metal upward in a mold and to improve surface quality of an ingot by arranging a feeder head case for ingot making with specified tapered angle at the lower part thereof, which is settled at the upper part of the mold.
CONSTITUTION: The feeder head case 5 is formed as cylindrical shape having a flange 5a to hang on a top end of the mold 2 at the upper part thereof and a taper part 5b with ≥70° angle to the horizontal plane at the lower part thereof. In this way, when the molten metal supplied into the mold 2 reaches to the taper part 5b of the feeder head case 5 as rising in the mold, the molten metal rises smoothly along the taper part 5b and prevents the feeder head case 5 from errosion, because of no disturbance of the molten metal flow. Therefore, the surface quality of ingot at he position of corresponding to the taper part 5b is improved.
OTSUGA DENJIRO
SUZUKI KIYOSHI
