| 摘要 |
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 deg. 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.
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