| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for producing a magnesium alloy ingot excellent in the quality containing the surface which can be obtained without developing the difficulty on the mechanism. SOLUTION: The apparatus produces the magnesium alloy ingot, so that the ingot can be obtained by pouring molten magnesium alloy into a mold from a molten metal pouring hole in a molten metal pouring nozzle and solidifying. This apparatus is provided with; a double structural cover case, in which a space exits between both of an outer cylinder and an inner cylinder, and both cylinders are connected through a ring piece at the upper part; a heat-insulating cylinder arranged in the inner peripheral part of the inner cylinder; the molten metal pouring nozzle penetratingly inserted in the axial direction of the inner cylinder at the inside of the heat-insulating cylinder; a heater wound on the outer peripheral part of the molten metal pouring nozzle; the mold arranged at the lower part of this cover case and this molten metal pouring nozzle; a sealing material arranged on the ring-shaped cover body of the mold faced to the outer cylinder of the cover case; and an ascending/descending device for cover case. The outer cylinder of the cover case is integrally ascended/descended with the molten metal pouring nozzle under state of slidingly moving to the seal material arranged on the cover body of the mold by operating the ascending/descending device. COPYRIGHT: (C)2008,JPO&INPIT
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